Move some functions from issue.go to standalone files (#32468)

Just functions move, no code change. --------- Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
2 weeks ago · a1892cf7e3
parent 43c252dfea
commit a1892cf7e3
8 changed files with 3497 additions and 3345 deletions
--- a/routers/web/repo/issue.go
+++ b/routers/web/repo/issue.go
--- a/routers/web/repo/issue_comment.go
+++ b/routers/web/repo/issue_comment.go
@ -0,0 +1,472 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repo
+
+import (
+	"errors"
+	"fmt"
+	"html/template"
+	"net/http"
+
+	issues_model "code.gitea.io/gitea/models/issues"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/markup/markdown"
+	repo_module "code.gitea.io/gitea/modules/repository"
+	"code.gitea.io/gitea/modules/setting"
+	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/web"
+	"code.gitea.io/gitea/services/context"
+	"code.gitea.io/gitea/services/convert"
+	"code.gitea.io/gitea/services/forms"
+	issue_service "code.gitea.io/gitea/services/issue"
+	pull_service "code.gitea.io/gitea/services/pull"
+)
+
+// NewComment create a comment for issue
+func NewComment(ctx *context.Context) {
+	form := web.GetForm(ctx).(*forms.CreateCommentForm)
+	issue := GetActionIssue(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	if !ctx.IsSigned || (ctx.Doer.ID != issue.PosterID && !ctx.Repo.CanReadIssuesOrPulls(issue.IsPull)) {
+		if log.IsTrace() {
+			if ctx.IsSigned {
+				issueType := "issues"
+				if issue.IsPull {
+					issueType = "pulls"
+				}
+				log.Trace("Permission Denied: User %-v not the Poster (ID: %d) and cannot read %s in Repo %-v.\n"+
+					"User in Repo has Permissions: %-+v",
+					ctx.Doer,
+					issue.PosterID,
+					issueType,
+					ctx.Repo.Repository,
+					ctx.Repo.Permission)
+			} else {
+				log.Trace("Permission Denied: Not logged in")
+			}
+		}
+
+		ctx.Error(http.StatusForbidden)
+		return
+	}
+
+	if issue.IsLocked && !ctx.Repo.CanWriteIssuesOrPulls(issue.IsPull) && !ctx.Doer.IsAdmin {
+		ctx.JSONError(ctx.Tr("repo.issues.comment_on_locked"))
+		return
+	}
+
+	var attachments []string
+	if setting.Attachment.Enabled {
+		attachments = form.Files
+	}
+
+	if ctx.HasError() {
+		ctx.JSONError(ctx.GetErrMsg())
+		return
+	}
+
+	var comment *issues_model.Comment
+	defer func() {
+		// Check if issue admin/poster changes the status of issue.
+		if (ctx.Repo.CanWriteIssuesOrPulls(issue.IsPull) || (ctx.IsSigned && issue.IsPoster(ctx.Doer.ID))) &&
+			(form.Status == "reopen" || form.Status == "close") &&
+			!(issue.IsPull && issue.PullRequest.HasMerged) {
+			// Duplication and conflict check should apply to reopen pull request.
+			var pr *issues_model.PullRequest
+
+			if form.Status == "reopen" && issue.IsPull {
+				pull := issue.PullRequest
+				var err error
+				pr, err = issues_model.GetUnmergedPullRequest(ctx, pull.HeadRepoID, pull.BaseRepoID, pull.HeadBranch, pull.BaseBranch, pull.Flow)
+				if err != nil {
+					if !issues_model.IsErrPullRequestNotExist(err) {
+						ctx.JSONError(ctx.Tr("repo.issues.dependency.pr_close_blocked"))
+						return
+					}
+				}
+
+				// Regenerate patch and test conflict.
+				if pr == nil {
+					issue.PullRequest.HeadCommitID = ""
+					pull_service.AddToTaskQueue(ctx, issue.PullRequest)
+				}
+
+				// check whether the ref of PR <refs/pulls/pr_index/head> in base repo is consistent with the head commit of head branch in the head repo
+				// get head commit of PR
+				if pull.Flow == issues_model.PullRequestFlowGithub {
+					prHeadRef := pull.GetGitRefName()
+					if err := pull.LoadBaseRepo(ctx); err != nil {
+						ctx.ServerError("Unable to load base repo", err)
+						return
+					}
+					prHeadCommitID, err := git.GetFullCommitID(ctx, pull.BaseRepo.RepoPath(), prHeadRef)
+					if err != nil {
+						ctx.ServerError("Get head commit Id of pr fail", err)
+						return
+					}
+
+					// get head commit of branch in the head repo
+					if err := pull.LoadHeadRepo(ctx); err != nil {
+						ctx.ServerError("Unable to load head repo", err)
+						return
+					}
+					if ok := git.IsBranchExist(ctx, pull.HeadRepo.RepoPath(), pull.BaseBranch); !ok {
+						// todo localize
+						ctx.JSONError("The origin branch is delete, cannot reopen.")
+						return
+					}
+					headBranchRef := pull.GetGitHeadBranchRefName()
+					headBranchCommitID, err := git.GetFullCommitID(ctx, pull.HeadRepo.RepoPath(), headBranchRef)
+					if err != nil {
+						ctx.ServerError("Get head commit Id of head branch fail", err)
+						return
+					}
+
+					err = pull.LoadIssue(ctx)
+					if err != nil {
+						ctx.ServerError("load the issue of pull request error", err)
+						return
+					}
+
+					if prHeadCommitID != headBranchCommitID {
+						// force push to base repo
+						err := git.Push(ctx, pull.HeadRepo.RepoPath(), git.PushOptions{
+							Remote: pull.BaseRepo.RepoPath(),
+							Branch: pull.HeadBranch + ":" + prHeadRef,
+							Force:  true,
+							Env:    repo_module.InternalPushingEnvironment(pull.Issue.Poster, pull.BaseRepo),
+						})
+						if err != nil {
+							ctx.ServerError("force push error", err)
+							return
+						}
+					}
+				}
+			}
+
+			if pr != nil {
+				ctx.Flash.Info(ctx.Tr("repo.pulls.open_unmerged_pull_exists", pr.Index))
+			} else {
+				isClosed := form.Status == "close"
+				if err := issue_service.ChangeStatus(ctx, issue, ctx.Doer, "", isClosed); err != nil {
+					log.Error("ChangeStatus: %v", err)
+
+					if issues_model.IsErrDependenciesLeft(err) {
+						if issue.IsPull {
+							ctx.JSONError(ctx.Tr("repo.issues.dependency.pr_close_blocked"))
+						} else {
+							ctx.JSONError(ctx.Tr("repo.issues.dependency.issue_close_blocked"))
+						}
+						return
+					}
+				} else {
+					if err := stopTimerIfAvailable(ctx, ctx.Doer, issue); err != nil {
+						ctx.ServerError("CreateOrStopIssueStopwatch", err)
+						return
+					}
+
+					log.Trace("Issue [%d] status changed to closed: %v", issue.ID, issue.IsClosed)
+				}
+			}
+		}
+
+		// Redirect to comment hashtag if there is any actual content.
+		typeName := "issues"
+		if issue.IsPull {
+			typeName = "pulls"
+		}
+		if comment != nil {
+			ctx.JSONRedirect(fmt.Sprintf("%s/%s/%d#%s", ctx.Repo.RepoLink, typeName, issue.Index, comment.HashTag()))
+		} else {
+			ctx.JSONRedirect(fmt.Sprintf("%s/%s/%d", ctx.Repo.RepoLink, typeName, issue.Index))
+		}
+	}()
+
+	// Fix #321: Allow empty comments, as long as we have attachments.
+	if len(form.Content) == 0 && len(attachments) == 0 {
+		return
+	}
+
+	comment, err := issue_service.CreateIssueComment(ctx, ctx.Doer, ctx.Repo.Repository, issue, form.Content, attachments)
+	if err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.JSONError(ctx.Tr("repo.issues.comment.blocked_user"))
+		} else {
+			ctx.ServerError("CreateIssueComment", err)
+		}
+		return
+	}
+
+	log.Trace("Comment created: %d/%d/%d", ctx.Repo.Repository.ID, issue.ID, comment.ID)
+}
+
+// UpdateCommentContent change comment of issue's content
+func UpdateCommentContent(ctx *context.Context) {
+	comment, err := issues_model.GetCommentByID(ctx, ctx.PathParamInt64(":id"))
+	if err != nil {
+		ctx.NotFoundOrServerError("GetCommentByID", issues_model.IsErrCommentNotExist, err)
+		return
+	}
+
+	if err := comment.LoadIssue(ctx); err != nil {
+		ctx.NotFoundOrServerError("LoadIssue", issues_model.IsErrIssueNotExist, err)
+		return
+	}
+
+	if comment.Issue.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound("CompareRepoID", issues_model.ErrCommentNotExist{})
+		return
+	}
+
+	if !ctx.IsSigned || (ctx.Doer.ID != comment.PosterID && !ctx.Repo.CanWriteIssuesOrPulls(comment.Issue.IsPull)) {
+		ctx.Error(http.StatusForbidden)
+		return
+	}
+
+	if !comment.Type.HasContentSupport() {
+		ctx.Error(http.StatusNoContent)
+		return
+	}
+
+	oldContent := comment.Content
+	newContent := ctx.FormString("content")
+	contentVersion := ctx.FormInt("content_version")
+
+	// allow to save empty content
+	comment.Content = newContent
+	if err = issue_service.UpdateComment(ctx, comment, contentVersion, ctx.Doer, oldContent); err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.JSONError(ctx.Tr("repo.issues.comment.blocked_user"))
+		} else if errors.Is(err, issues_model.ErrCommentAlreadyChanged) {
+			ctx.JSONError(ctx.Tr("repo.comments.edit.already_changed"))
+		} else {
+			ctx.ServerError("UpdateComment", err)
+		}
+		return
+	}
+
+	if err := comment.LoadAttachments(ctx); err != nil {
+		ctx.ServerError("LoadAttachments", err)
+		return
+	}
+
+	// when the update request doesn't intend to update attachments (eg: change checkbox state), ignore attachment updates
+	if !ctx.FormBool("ignore_attachments") {
+		if err := updateAttachments(ctx, comment, ctx.FormStrings("files[]")); err != nil {
+			ctx.ServerError("UpdateAttachments", err)
+			return
+		}
+	}
+
+	var renderedContent template.HTML
+	if comment.Content != "" {
+		renderedContent, err = markdown.RenderString(&markup.RenderContext{
+			Links: markup.Links{
+				Base: ctx.FormString("context"), // FIXME: <- IS THIS SAFE ?
+			},
+			Metas:   ctx.Repo.Repository.ComposeMetas(ctx),
+			GitRepo: ctx.Repo.GitRepo,
+			Repo:    ctx.Repo.Repository,
+			Ctx:     ctx,
+		}, comment.Content)
+		if err != nil {
+			ctx.ServerError("RenderString", err)
+			return
+		}
+	} else {
+		contentEmpty := fmt.Sprintf(`<span class="no-content">%s</span>`, ctx.Tr("repo.issues.no_content"))
+		renderedContent = template.HTML(contentEmpty)
+	}
+
+	ctx.JSON(http.StatusOK, map[string]any{
+		"content":        renderedContent,
+		"contentVersion": comment.ContentVersion,
+		"attachments":    attachmentsHTML(ctx, comment.Attachments, comment.Content),
+	})
+}
+
+// DeleteComment delete comment of issue
+func DeleteComment(ctx *context.Context) {
+	comment, err := issues_model.GetCommentByID(ctx, ctx.PathParamInt64(":id"))
+	if err != nil {
+		ctx.NotFoundOrServerError("GetCommentByID", issues_model.IsErrCommentNotExist, err)
+		return
+	}
+
+	if err := comment.LoadIssue(ctx); err != nil {
+		ctx.NotFoundOrServerError("LoadIssue", issues_model.IsErrIssueNotExist, err)
+		return
+	}
+
+	if comment.Issue.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound("CompareRepoID", issues_model.ErrCommentNotExist{})
+		return
+	}
+
+	if !ctx.IsSigned || (ctx.Doer.ID != comment.PosterID && !ctx.Repo.CanWriteIssuesOrPulls(comment.Issue.IsPull)) {
+		ctx.Error(http.StatusForbidden)
+		return
+	} else if !comment.Type.HasContentSupport() {
+		ctx.Error(http.StatusNoContent)
+		return
+	}
+
+	if err = issue_service.DeleteComment(ctx, ctx.Doer, comment); err != nil {
+		ctx.ServerError("DeleteComment", err)
+		return
+	}
+
+	ctx.Status(http.StatusOK)
+}
+
+// ChangeCommentReaction create a reaction for comment
+func ChangeCommentReaction(ctx *context.Context) {
+	form := web.GetForm(ctx).(*forms.ReactionForm)
+	comment, err := issues_model.GetCommentByID(ctx, ctx.PathParamInt64(":id"))
+	if err != nil {
+		ctx.NotFoundOrServerError("GetCommentByID", issues_model.IsErrCommentNotExist, err)
+		return
+	}
+
+	if err := comment.LoadIssue(ctx); err != nil {
+		ctx.NotFoundOrServerError("LoadIssue", issues_model.IsErrIssueNotExist, err)
+		return
+	}
+
+	if comment.Issue.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound("CompareRepoID", issues_model.ErrCommentNotExist{})
+		return
+	}
+
+	if !ctx.IsSigned || (ctx.Doer.ID != comment.PosterID && !ctx.Repo.CanReadIssuesOrPulls(comment.Issue.IsPull)) {
+		if log.IsTrace() {
+			if ctx.IsSigned {
+				issueType := "issues"
+				if comment.Issue.IsPull {
+					issueType = "pulls"
+				}
+				log.Trace("Permission Denied: User %-v not the Poster (ID: %d) and cannot read %s in Repo %-v.\n"+
+					"User in Repo has Permissions: %-+v",
+					ctx.Doer,
+					comment.Issue.PosterID,
+					issueType,
+					ctx.Repo.Repository,
+					ctx.Repo.Permission)
+			} else {
+				log.Trace("Permission Denied: Not logged in")
+			}
+		}
+
+		ctx.Error(http.StatusForbidden)
+		return
+	}
+
+	if !comment.Type.HasContentSupport() {
+		ctx.Error(http.StatusNoContent)
+		return
+	}
+
+	switch ctx.PathParam(":action") {
+	case "react":
+		reaction, err := issue_service.CreateCommentReaction(ctx, ctx.Doer, comment, form.Content)
+		if err != nil {
+			if issues_model.IsErrForbiddenIssueReaction(err) || errors.Is(err, user_model.ErrBlockedUser) {
+				ctx.ServerError("ChangeIssueReaction", err)
+				return
+			}
+			log.Info("CreateCommentReaction: %s", err)
+			break
+		}
+		// Reload new reactions
+		comment.Reactions = nil
+		if err = comment.LoadReactions(ctx, ctx.Repo.Repository); err != nil {
+			log.Info("comment.LoadReactions: %s", err)
+			break
+		}
+
+		log.Trace("Reaction for comment created: %d/%d/%d/%d", ctx.Repo.Repository.ID, comment.Issue.ID, comment.ID, reaction.ID)
+	case "unreact":
+		if err := issues_model.DeleteCommentReaction(ctx, ctx.Doer.ID, comment.Issue.ID, comment.ID, form.Content); err != nil {
+			ctx.ServerError("DeleteCommentReaction", err)
+			return
+		}
+
+		// Reload new reactions
+		comment.Reactions = nil
+		if err = comment.LoadReactions(ctx, ctx.Repo.Repository); err != nil {
+			log.Info("comment.LoadReactions: %s", err)
+			break
+		}
+
+		log.Trace("Reaction for comment removed: %d/%d/%d", ctx.Repo.Repository.ID, comment.Issue.ID, comment.ID)
+	default:
+		ctx.NotFound(fmt.Sprintf("Unknown action %s", ctx.PathParam(":action")), nil)
+		return
+	}
+
+	if len(comment.Reactions) == 0 {
+		ctx.JSON(http.StatusOK, map[string]any{
+			"empty": true,
+			"html":  "",
+		})
+		return
+	}
+
+	html, err := ctx.RenderToHTML(tplReactions, map[string]any{
+		"ActionURL": fmt.Sprintf("%s/comments/%d/reactions", ctx.Repo.RepoLink, comment.ID),
+		"Reactions": comment.Reactions.GroupByType(),
+	})
+	if err != nil {
+		ctx.ServerError("ChangeCommentReaction.HTMLString", err)
+		return
+	}
+	ctx.JSON(http.StatusOK, map[string]any{
+		"html": html,
+	})
+}
+
+// GetCommentAttachments returns attachments for the comment
+func GetCommentAttachments(ctx *context.Context) {
+	comment, err := issues_model.GetCommentByID(ctx, ctx.PathParamInt64(":id"))
+	if err != nil {
+		ctx.NotFoundOrServerError("GetCommentByID", issues_model.IsErrCommentNotExist, err)
+		return
+	}
+
+	if err := comment.LoadIssue(ctx); err != nil {
+		ctx.NotFoundOrServerError("LoadIssue", issues_model.IsErrIssueNotExist, err)
+		return
+	}
+
+	if comment.Issue.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound("CompareRepoID", issues_model.ErrCommentNotExist{})
+		return
+	}
+
+	if !ctx.Repo.Permission.CanReadIssuesOrPulls(comment.Issue.IsPull) {
+		ctx.NotFound("CanReadIssuesOrPulls", issues_model.ErrCommentNotExist{})
+		return
+	}
+
+	if !comment.Type.HasAttachmentSupport() {
+		ctx.ServerError("GetCommentAttachments", fmt.Errorf("comment type %v does not support attachments", comment.Type))
+		return
+	}
+
+	attachments := make([]*api.Attachment, 0)
+	if err := comment.LoadAttachments(ctx); err != nil {
+		ctx.ServerError("LoadAttachments", err)
+		return
+	}
+	for i := 0; i < len(comment.Attachments); i++ {
+		attachments = append(attachments, convert.ToAttachment(ctx.Repo.Repository, comment.Attachments[i]))
+	}
+	ctx.JSON(http.StatusOK, attachments)
+}
--- a/routers/web/repo/issue_list.go
+++ b/routers/web/repo/issue_list.go
@ -0,0 +1,882 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repo
+
+import (
+	"bytes"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"code.gitea.io/gitea/models/db"
+	git_model "code.gitea.io/gitea/models/git"
+	issues_model "code.gitea.io/gitea/models/issues"
+	"code.gitea.io/gitea/models/organization"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unit"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/base"
+	issue_indexer "code.gitea.io/gitea/modules/indexer/issues"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/optional"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/util"
+	shared_user "code.gitea.io/gitea/routers/web/shared/user"
+	"code.gitea.io/gitea/services/context"
+	"code.gitea.io/gitea/services/convert"
+	issue_service "code.gitea.io/gitea/services/issue"
+	pull_service "code.gitea.io/gitea/services/pull"
+)
+
+func issueIDsFromSearch(ctx *context.Context, keyword string, opts *issues_model.IssuesOptions) ([]int64, error) {
+	ids, _, err := issue_indexer.SearchIssues(ctx, issue_indexer.ToSearchOptions(keyword, opts))
+	if err != nil {
+		return nil, fmt.Errorf("SearchIssues: %w", err)
+	}
+	return ids, nil
+}
+
+func retrieveProjectsForIssueList(ctx *context.Context, repo *repo_model.Repository) {
+	ctx.Data["OpenProjects"], ctx.Data["ClosedProjects"] = retrieveProjectsInternal(ctx, repo)
+}
+
+// SearchIssues searches for issues across the repositories that the user has access to
+func SearchIssues(ctx *context.Context) {
+	before, since, err := context.GetQueryBeforeSince(ctx.Base)
+	if err != nil {
+		ctx.Error(http.StatusUnprocessableEntity, err.Error())
+		return
+	}
+
+	var isClosed optional.Option[bool]
+	switch ctx.FormString("state") {
+	case "closed":
+		isClosed = optional.Some(true)
+	case "all":
+		isClosed = optional.None[bool]()
+	default:
+		isClosed = optional.Some(false)
+	}
+
+	var (
+		repoIDs   []int64
+		allPublic bool
+	)
+	{
+		// find repos user can access (for issue search)
+		opts := &repo_model.SearchRepoOptions{
+			Private:     false,
+			AllPublic:   true,
+			TopicOnly:   false,
+			Collaborate: optional.None[bool](),
+			// This needs to be a column that is not nil in fixtures or
+			// MySQL will return different results when sorting by null in some cases
+			OrderBy: db.SearchOrderByAlphabetically,
+			Actor:   ctx.Doer,
+		}
+		if ctx.IsSigned {
+			opts.Private = true
+			opts.AllLimited = true
+		}
+		if ctx.FormString("owner") != "" {
+			owner, err := user_model.GetUserByName(ctx, ctx.FormString("owner"))
+			if err != nil {
+				if user_model.IsErrUserNotExist(err) {
+					ctx.Error(http.StatusBadRequest, "Owner not found", err.Error())
+				} else {
+					ctx.Error(http.StatusInternalServerError, "GetUserByName", err.Error())
+				}
+				return
+			}
+			opts.OwnerID = owner.ID
+			opts.AllLimited = false
+			opts.AllPublic = false
+			opts.Collaborate = optional.Some(false)
+		}
+		if ctx.FormString("team") != "" {
+			if ctx.FormString("owner") == "" {
+				ctx.Error(http.StatusBadRequest, "", "Owner organisation is required for filtering on team")
+				return
+			}
+			team, err := organization.GetTeam(ctx, opts.OwnerID, ctx.FormString("team"))
+			if err != nil {
+				if organization.IsErrTeamNotExist(err) {
+					ctx.Error(http.StatusBadRequest, "Team not found", err.Error())
+				} else {
+					ctx.Error(http.StatusInternalServerError, "GetUserByName", err.Error())
+				}
+				return
+			}
+			opts.TeamID = team.ID
+		}
+
+		if opts.AllPublic {
+			allPublic = true
+			opts.AllPublic = false // set it false to avoid returning too many repos, we could filter by indexer
+		}
+		repoIDs, _, err = repo_model.SearchRepositoryIDs(ctx, opts)
+		if err != nil {
+			ctx.Error(http.StatusInternalServerError, "SearchRepositoryIDs", err.Error())
+			return
+		}
+		if len(repoIDs) == 0 {
+			// no repos found, don't let the indexer return all repos
+			repoIDs = []int64{0}
+		}
+	}
+
+	keyword := ctx.FormTrim("q")
+	if strings.IndexByte(keyword, 0) >= 0 {
+		keyword = ""
+	}
+
+	isPull := optional.None[bool]()
+	switch ctx.FormString("type") {
+	case "pulls":
+		isPull = optional.Some(true)
+	case "issues":
+		isPull = optional.Some(false)
+	}
+
+	var includedAnyLabels []int64
+	{
+		labels := ctx.FormTrim("labels")
+		var includedLabelNames []string
+		if len(labels) > 0 {
+			includedLabelNames = strings.Split(labels, ",")
+		}
+		includedAnyLabels, err = issues_model.GetLabelIDsByNames(ctx, includedLabelNames)
+		if err != nil {
+			ctx.Error(http.StatusInternalServerError, "GetLabelIDsByNames", err.Error())
+			return
+		}
+	}
+
+	var includedMilestones []int64
+	{
+		milestones := ctx.FormTrim("milestones")
+		var includedMilestoneNames []string
+		if len(milestones) > 0 {
+			includedMilestoneNames = strings.Split(milestones, ",")
+		}
+		includedMilestones, err = issues_model.GetMilestoneIDsByNames(ctx, includedMilestoneNames)
+		if err != nil {
+			ctx.Error(http.StatusInternalServerError, "GetMilestoneIDsByNames", err.Error())
+			return
+		}
+	}
+
+	projectID := optional.None[int64]()
+	if v := ctx.FormInt64("project"); v > 0 {
+		projectID = optional.Some(v)
+	}
+
+	// this api is also used in UI,
+	// so the default limit is set to fit UI needs
+	limit := ctx.FormInt("limit")
+	if limit == 0 {
+		limit = setting.UI.IssuePagingNum
+	} else if limit > setting.API.MaxResponseItems {
+		limit = setting.API.MaxResponseItems
+	}
+
+	searchOpt := &issue_indexer.SearchOptions{
+		Paginator: &db.ListOptions{
+			Page:     ctx.FormInt("page"),
+			PageSize: limit,
+		},
+		Keyword:             keyword,
+		RepoIDs:             repoIDs,
+		AllPublic:           allPublic,
+		IsPull:              isPull,
+		IsClosed:            isClosed,
+		IncludedAnyLabelIDs: includedAnyLabels,
+		MilestoneIDs:        includedMilestones,
+		ProjectID:           projectID,
+		SortBy:              issue_indexer.SortByCreatedDesc,
+	}
+
+	if since != 0 {
+		searchOpt.UpdatedAfterUnix = optional.Some(since)
+	}
+	if before != 0 {
+		searchOpt.UpdatedBeforeUnix = optional.Some(before)
+	}
+
+	if ctx.IsSigned {
+		ctxUserID := ctx.Doer.ID
+		if ctx.FormBool("created") {
+			searchOpt.PosterID = optional.Some(ctxUserID)
+		}
+		if ctx.FormBool("assigned") {
+			searchOpt.AssigneeID = optional.Some(ctxUserID)
+		}
+		if ctx.FormBool("mentioned") {
+			searchOpt.MentionID = optional.Some(ctxUserID)
+		}
+		if ctx.FormBool("review_requested") {
+			searchOpt.ReviewRequestedID = optional.Some(ctxUserID)
+		}
+		if ctx.FormBool("reviewed") {
+			searchOpt.ReviewedID = optional.Some(ctxUserID)
+		}
+	}
+
+	// FIXME: It's unsupported to sort by priority repo when searching by indexer,
+	//        it's indeed an regression, but I think it is worth to support filtering by indexer first.
+	_ = ctx.FormInt64("priority_repo_id")
+
+	ids, total, err := issue_indexer.SearchIssues(ctx, searchOpt)
+	if err != nil {
+		ctx.Error(http.StatusInternalServerError, "SearchIssues", err.Error())
+		return
+	}
+	issues, err := issues_model.GetIssuesByIDs(ctx, ids, true)
+	if err != nil {
+		ctx.Error(http.StatusInternalServerError, "FindIssuesByIDs", err.Error())
+		return
+	}
+
+	ctx.SetTotalCountHeader(total)
+	ctx.JSON(http.StatusOK, convert.ToIssueList(ctx, ctx.Doer, issues))
+}
+
+func getUserIDForFilter(ctx *context.Context, queryName string) int64 {
+	userName := ctx.FormString(queryName)
+	if len(userName) == 0 {
+		return 0
+	}
+
+	user, err := user_model.GetUserByName(ctx, userName)
+	if user_model.IsErrUserNotExist(err) {
+		ctx.NotFound("", err)
+		return 0
+	}
+
+	if err != nil {
+		ctx.Error(http.StatusInternalServerError, err.Error())
+		return 0
+	}
+
+	return user.ID
+}
+
+// ListIssues list the issues of a repository
+func ListIssues(ctx *context.Context) {
+	before, since, err := context.GetQueryBeforeSince(ctx.Base)
+	if err != nil {
+		ctx.Error(http.StatusUnprocessableEntity, err.Error())
+		return
+	}
+
+	var isClosed optional.Option[bool]
+	switch ctx.FormString("state") {
+	case "closed":
+		isClosed = optional.Some(true)
+	case "all":
+		isClosed = optional.None[bool]()
+	default:
+		isClosed = optional.Some(false)
+	}
+
+	keyword := ctx.FormTrim("q")
+	if strings.IndexByte(keyword, 0) >= 0 {
+		keyword = ""
+	}
+
+	var labelIDs []int64
+	if splitted := strings.Split(ctx.FormString("labels"), ","); len(splitted) > 0 {
+		labelIDs, err = issues_model.GetLabelIDsInRepoByNames(ctx, ctx.Repo.Repository.ID, splitted)
+		if err != nil {
+			ctx.Error(http.StatusInternalServerError, err.Error())
+			return
+		}
+	}
+
+	var mileIDs []int64
+	if part := strings.Split(ctx.FormString("milestones"), ","); len(part) > 0 {
+		for i := range part {
+			// uses names and fall back to ids
+			// non existent milestones are discarded
+			mile, err := issues_model.GetMilestoneByRepoIDANDName(ctx, ctx.Repo.Repository.ID, part[i])
+			if err == nil {
+				mileIDs = append(mileIDs, mile.ID)
+				continue
+			}
+			if !issues_model.IsErrMilestoneNotExist(err) {
+				ctx.Error(http.StatusInternalServerError, err.Error())
+				return
+			}
+			id, err := strconv.ParseInt(part[i], 10, 64)
+			if err != nil {
+				continue
+			}
+			mile, err = issues_model.GetMilestoneByRepoID(ctx, ctx.Repo.Repository.ID, id)
+			if err == nil {
+				mileIDs = append(mileIDs, mile.ID)
+				continue
+			}
+			if issues_model.IsErrMilestoneNotExist(err) {
+				continue
+			}
+			ctx.Error(http.StatusInternalServerError, err.Error())
+		}
+	}
+
+	projectID := optional.None[int64]()
+	if v := ctx.FormInt64("project"); v > 0 {
+		projectID = optional.Some(v)
+	}
+
+	isPull := optional.None[bool]()
+	switch ctx.FormString("type") {
+	case "pulls":
+		isPull = optional.Some(true)
+	case "issues":
+		isPull = optional.Some(false)
+	}
+
+	// FIXME: we should be more efficient here
+	createdByID := getUserIDForFilter(ctx, "created_by")
+	if ctx.Written() {
+		return
+	}
+	assignedByID := getUserIDForFilter(ctx, "assigned_by")
+	if ctx.Written() {
+		return
+	}
+	mentionedByID := getUserIDForFilter(ctx, "mentioned_by")
+	if ctx.Written() {
+		return
+	}
+
+	searchOpt := &issue_indexer.SearchOptions{
+		Paginator: &db.ListOptions{
+			Page:     ctx.FormInt("page"),
+			PageSize: convert.ToCorrectPageSize(ctx.FormInt("limit")),
+		},
+		Keyword:   keyword,
+		RepoIDs:   []int64{ctx.Repo.Repository.ID},
+		IsPull:    isPull,
+		IsClosed:  isClosed,
+		ProjectID: projectID,
+		SortBy:    issue_indexer.SortByCreatedDesc,
+	}
+	if since != 0 {
+		searchOpt.UpdatedAfterUnix = optional.Some(since)
+	}
+	if before != 0 {
+		searchOpt.UpdatedBeforeUnix = optional.Some(before)
+	}
+	if len(labelIDs) == 1 && labelIDs[0] == 0 {
+		searchOpt.NoLabelOnly = true
+	} else {
+		for _, labelID := range labelIDs {
+			if labelID > 0 {
+				searchOpt.IncludedLabelIDs = append(searchOpt.IncludedLabelIDs, labelID)
+			} else {
+				searchOpt.ExcludedLabelIDs = append(searchOpt.ExcludedLabelIDs, -labelID)
+			}
+		}
+	}
+
+	if len(mileIDs) == 1 && mileIDs[0] == db.NoConditionID {
+		searchOpt.MilestoneIDs = []int64{0}
+	} else {
+		searchOpt.MilestoneIDs = mileIDs
+	}
+
+	if createdByID > 0 {
+		searchOpt.PosterID = optional.Some(createdByID)
+	}
+	if assignedByID > 0 {
+		searchOpt.AssigneeID = optional.Some(assignedByID)
+	}
+	if mentionedByID > 0 {
+		searchOpt.MentionID = optional.Some(mentionedByID)
+	}
+
+	ids, total, err := issue_indexer.SearchIssues(ctx, searchOpt)
+	if err != nil {
+		ctx.Error(http.StatusInternalServerError, "SearchIssues", err.Error())
+		return
+	}
+	issues, err := issues_model.GetIssuesByIDs(ctx, ids, true)
+	if err != nil {
+		ctx.Error(http.StatusInternalServerError, "FindIssuesByIDs", err.Error())
+		return
+	}
+
+	ctx.SetTotalCountHeader(total)
+	ctx.JSON(http.StatusOK, convert.ToIssueList(ctx, ctx.Doer, issues))
+}
+
+func BatchDeleteIssues(ctx *context.Context) {
+	issues := getActionIssues(ctx)
+	if ctx.Written() {
+		return
+	}
+	for _, issue := range issues {
+		if err := issue_service.DeleteIssue(ctx, ctx.Doer, ctx.Repo.GitRepo, issue); err != nil {
+			ctx.ServerError("DeleteIssue", err)
+			return
+		}
+	}
+	ctx.JSONOK()
+}
+
+// UpdateIssueStatus change issue's status
+func UpdateIssueStatus(ctx *context.Context) {
+	issues := getActionIssues(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	var isClosed bool
+	switch action := ctx.FormString("action"); action {
+	case "open":
+		isClosed = false
+	case "close":
+		isClosed = true
+	default:
+		log.Warn("Unrecognized action: %s", action)
+	}
+
+	if _, err := issues.LoadRepositories(ctx); err != nil {
+		ctx.ServerError("LoadRepositories", err)
+		return
+	}
+	if err := issues.LoadPullRequests(ctx); err != nil {
+		ctx.ServerError("LoadPullRequests", err)
+		return
+	}
+
+	for _, issue := range issues {
+		if issue.IsPull && issue.PullRequest.HasMerged {
+			continue
+		}
+		if issue.IsClosed != isClosed {
+			if err := issue_service.ChangeStatus(ctx, issue, ctx.Doer, "", isClosed); err != nil {
+				if issues_model.IsErrDependenciesLeft(err) {
+					ctx.JSON(http.StatusPreconditionFailed, map[string]any{
+						"error": ctx.Tr("repo.issues.dependency.issue_batch_close_blocked", issue.Index),
+					})
+					return
+				}
+				ctx.ServerError("ChangeStatus", err)
+				return
+			}
+		}
+	}
+	ctx.JSONOK()
+}
+
+func renderMilestones(ctx *context.Context) {
+	// Get milestones
+	milestones, err := db.Find[issues_model.Milestone](ctx, issues_model.FindMilestoneOptions{
+		RepoID: ctx.Repo.Repository.ID,
+	})
+	if err != nil {
+		ctx.ServerError("GetAllRepoMilestones", err)
+		return
+	}
+
+	openMilestones, closedMilestones := issues_model.MilestoneList{}, issues_model.MilestoneList{}
+	for _, milestone := range milestones {
+		if milestone.IsClosed {
+			closedMilestones = append(closedMilestones, milestone)
+		} else {
+			openMilestones = append(openMilestones, milestone)
+		}
+	}
+	ctx.Data["OpenMilestones"] = openMilestones
+	ctx.Data["ClosedMilestones"] = closedMilestones
+}
+
+func issues(ctx *context.Context, milestoneID, projectID int64, isPullOption optional.Option[bool]) {
+	var err error
+	viewType := ctx.FormString("type")
+	sortType := ctx.FormString("sort")
+	types := []string{"all", "your_repositories", "assigned", "created_by", "mentioned", "review_requested", "reviewed_by"}
+	if !util.SliceContainsString(types, viewType, true) {
+		viewType = "all"
+	}
+
+	var (
+		assigneeID        = ctx.FormInt64("assignee")
+		posterID          = ctx.FormInt64("poster")
+		mentionedID       int64
+		reviewRequestedID int64
+		reviewedID        int64
+	)
+
+	if ctx.IsSigned {
+		switch viewType {
+		case "created_by":
+			posterID = ctx.Doer.ID
+		case "mentioned":
+			mentionedID = ctx.Doer.ID
+		case "assigned":
+			assigneeID = ctx.Doer.ID
+		case "review_requested":
+			reviewRequestedID = ctx.Doer.ID
+		case "reviewed_by":
+			reviewedID = ctx.Doer.ID
+		}
+	}
+
+	repo := ctx.Repo.Repository
+	var labelIDs []int64
+	// 1,-2 means including label 1 and excluding label 2
+	// 0 means issues with no label
+	// blank means labels will not be filtered for issues
+	selectLabels := ctx.FormString("labels")
+	if selectLabels == "" {
+		ctx.Data["AllLabels"] = true
+	} else if selectLabels == "0" {
+		ctx.Data["NoLabel"] = true
+	}
+	if len(selectLabels) > 0 {
+		labelIDs, err = base.StringsToInt64s(strings.Split(selectLabels, ","))
+		if err != nil {
+			ctx.Flash.Error(ctx.Tr("invalid_data", selectLabels), true)
+		}
+	}
+
+	keyword := strings.Trim(ctx.FormString("q"), " ")
+	if bytes.Contains([]byte(keyword), []byte{0x00}) {
+		keyword = ""
+	}
+
+	var mileIDs []int64
+	if milestoneID > 0 || milestoneID == db.NoConditionID { // -1 to get those issues which have no any milestone assigned
+		mileIDs = []int64{milestoneID}
+	}
+
+	var issueStats *issues_model.IssueStats
+	statsOpts := &issues_model.IssuesOptions{
+		RepoIDs:           []int64{repo.ID},
+		LabelIDs:          labelIDs,
+		MilestoneIDs:      mileIDs,
+		ProjectID:         projectID,
+		AssigneeID:        assigneeID,
+		MentionedID:       mentionedID,
+		PosterID:          posterID,
+		ReviewRequestedID: reviewRequestedID,
+		ReviewedID:        reviewedID,
+		IsPull:            isPullOption,
+		IssueIDs:          nil,
+	}
+	if keyword != "" {
+		allIssueIDs, err := issueIDsFromSearch(ctx, keyword, statsOpts)
+		if err != nil {
+			if issue_indexer.IsAvailable(ctx) {
+				ctx.ServerError("issueIDsFromSearch", err)
+				return
+			}
+			ctx.Data["IssueIndexerUnavailable"] = true
+			return
+		}
+		statsOpts.IssueIDs = allIssueIDs
+	}
+	if keyword != "" && len(statsOpts.IssueIDs) == 0 {
+		// So it did search with the keyword, but no issue found.
+		// Just set issueStats to empty.
+		issueStats = &issues_model.IssueStats{}
+	} else {
+		// So it did search with the keyword, and found some issues. It needs to get issueStats of these issues.
+		// Or the keyword is empty, so it doesn't need issueIDs as filter, just get issueStats with statsOpts.
+		issueStats, err = issues_model.GetIssueStats(ctx, statsOpts)
+		if err != nil {
+			ctx.ServerError("GetIssueStats", err)
+			return
+		}
+	}
+
+	var isShowClosed optional.Option[bool]
+	switch ctx.FormString("state") {
+	case "closed":
+		isShowClosed = optional.Some(true)
+	case "all":
+		isShowClosed = optional.None[bool]()
+	default:
+		isShowClosed = optional.Some(false)
+	}
+	// if there are closed issues and no open issues, default to showing all issues
+	if len(ctx.FormString("state")) == 0 && issueStats.OpenCount == 0 && issueStats.ClosedCount != 0 {
+		isShowClosed = optional.None[bool]()
+	}
+
+	if repo.IsTimetrackerEnabled(ctx) {
+		totalTrackedTime, err := issues_model.GetIssueTotalTrackedTime(ctx, statsOpts, isShowClosed)
+		if err != nil {
+			ctx.ServerError("GetIssueTotalTrackedTime", err)
+			return
+		}
+		ctx.Data["TotalTrackedTime"] = totalTrackedTime
+	}
+
+	archived := ctx.FormBool("archived")
+
+	page := ctx.FormInt("page")
+	if page <= 1 {
+		page = 1
+	}
+
+	var total int
+	switch {
+	case isShowClosed.Value():
+		total = int(issueStats.ClosedCount)
+	case !isShowClosed.Has():
+		total = int(issueStats.OpenCount + issueStats.ClosedCount)
+	default:
+		total = int(issueStats.OpenCount)
+	}
+	pager := context.NewPagination(total, setting.UI.IssuePagingNum, page, 5)
+
+	var issues issues_model.IssueList
+	{
+		ids, err := issueIDsFromSearch(ctx, keyword, &issues_model.IssuesOptions{
+			Paginator: &db.ListOptions{
+				Page:     pager.Paginater.Current(),
+				PageSize: setting.UI.IssuePagingNum,
+			},
+			RepoIDs:           []int64{repo.ID},
+			AssigneeID:        assigneeID,
+			PosterID:          posterID,
+			MentionedID:       mentionedID,
+			ReviewRequestedID: reviewRequestedID,
+			ReviewedID:        reviewedID,
+			MilestoneIDs:      mileIDs,
+			ProjectID:         projectID,
+			IsClosed:          isShowClosed,
+			IsPull:            isPullOption,
+			LabelIDs:          labelIDs,
+			SortType:          sortType,
+		})
+		if err != nil {
+			if issue_indexer.IsAvailable(ctx) {
+				ctx.ServerError("issueIDsFromSearch", err)
+				return
+			}
+			ctx.Data["IssueIndexerUnavailable"] = true
+			return
+		}
+		issues, err = issues_model.GetIssuesByIDs(ctx, ids, true)
+		if err != nil {
+			ctx.ServerError("GetIssuesByIDs", err)
+			return
+		}
+	}
+
+	approvalCounts, err := issues.GetApprovalCounts(ctx)
+	if err != nil {
+		ctx.ServerError("ApprovalCounts", err)
+		return
+	}
+
+	if ctx.IsSigned {
+		if err := issues.LoadIsRead(ctx, ctx.Doer.ID); err != nil {
+			ctx.ServerError("LoadIsRead", err)
+			return
+		}
+	} else {
+		for i := range issues {
+			issues[i].IsRead = true
+		}
+	}
+
+	commitStatuses, lastStatus, err := pull_service.GetIssuesAllCommitStatus(ctx, issues)
+	if err != nil {
+		ctx.ServerError("GetIssuesAllCommitStatus", err)
+		return
+	}
+	if !ctx.Repo.CanRead(unit.TypeActions) {
+		for key := range commitStatuses {
+			git_model.CommitStatusesHideActionsURL(ctx, commitStatuses[key])
+		}
+	}
+
+	if err := issues.LoadAttributes(ctx); err != nil {
+		ctx.ServerError("issues.LoadAttributes", err)
+		return
+	}
+
+	ctx.Data["Issues"] = issues
+	ctx.Data["CommitLastStatus"] = lastStatus
+	ctx.Data["CommitStatuses"] = commitStatuses
+
+	// Get assignees.
+	assigneeUsers, err := repo_model.GetRepoAssignees(ctx, repo)
+	if err != nil {
+		ctx.ServerError("GetRepoAssignees", err)
+		return
+	}
+	ctx.Data["Assignees"] = shared_user.MakeSelfOnTop(ctx.Doer, assigneeUsers)
+
+	handleTeamMentions(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	labels, err := issues_model.GetLabelsByRepoID(ctx, repo.ID, "", db.ListOptions{})
+	if err != nil {
+		ctx.ServerError("GetLabelsByRepoID", err)
+		return
+	}
+
+	if repo.Owner.IsOrganization() {
+		orgLabels, err := issues_model.GetLabelsByOrgID(ctx, repo.Owner.ID, ctx.FormString("sort"), db.ListOptions{})
+		if err != nil {
+			ctx.ServerError("GetLabelsByOrgID", err)
+			return
+		}
+
+		ctx.Data["OrgLabels"] = orgLabels
+		labels = append(labels, orgLabels...)
+	}
+
+	// Get the exclusive scope for every label ID
+	labelExclusiveScopes := make([]string, 0, len(labelIDs))
+	for _, labelID := range labelIDs {
+		foundExclusiveScope := false
+		for _, label := range labels {
+			if label.ID == labelID || label.ID == -labelID {
+				labelExclusiveScopes = append(labelExclusiveScopes, label.ExclusiveScope())
+				foundExclusiveScope = true
+				break
+			}
+		}
+		if !foundExclusiveScope {
+			labelExclusiveScopes = append(labelExclusiveScopes, "")
+		}
+	}
+
+	for _, l := range labels {
+		l.LoadSelectedLabelsAfterClick(labelIDs, labelExclusiveScopes)
+	}
+	ctx.Data["Labels"] = labels
+	ctx.Data["NumLabels"] = len(labels)
+
+	if ctx.FormInt64("assignee") == 0 {
+		assigneeID = 0 // Reset ID to prevent unexpected selection of assignee.
+	}
+
+	ctx.Data["IssueRefEndNames"], ctx.Data["IssueRefURLs"] = issue_service.GetRefEndNamesAndURLs(issues, ctx.Repo.RepoLink)
+
+	ctx.Data["ApprovalCounts"] = func(issueID int64, typ string) int64 {
+		counts, ok := approvalCounts[issueID]
+		if !ok || len(counts) == 0 {
+			return 0
+		}
+		reviewTyp := issues_model.ReviewTypeApprove
+		if typ == "reject" {
+			reviewTyp = issues_model.ReviewTypeReject
+		} else if typ == "waiting" {
+			reviewTyp = issues_model.ReviewTypeRequest
+		}
+		for _, count := range counts {
+			if count.Type == reviewTyp {
+				return count.Count
+			}
+		}
+		return 0
+	}
+
+	retrieveProjectsForIssueList(ctx, repo)
+	if ctx.Written() {
+		return
+	}
+
+	pinned, err := issues_model.GetPinnedIssues(ctx, repo.ID, isPullOption.Value())
+	if err != nil {
+		ctx.ServerError("GetPinnedIssues", err)
+		return
+	}
+
+	ctx.Data["PinnedIssues"] = pinned
+	ctx.Data["IsRepoAdmin"] = ctx.IsSigned && (ctx.Repo.IsAdmin() || ctx.Doer.IsAdmin)
+	ctx.Data["IssueStats"] = issueStats
+	ctx.Data["OpenCount"] = issueStats.OpenCount
+	ctx.Data["ClosedCount"] = issueStats.ClosedCount
+	linkStr := "%s?q=%s&type=%s&sort=%s&state=%s&labels=%s&milestone=%d&project=%d&assignee=%d&poster=%d&archived=%t"
+	ctx.Data["AllStatesLink"] = fmt.Sprintf(linkStr, ctx.Link,
+		url.QueryEscape(keyword), url.QueryEscape(viewType), url.QueryEscape(sortType), "all", url.QueryEscape(selectLabels),
+		milestoneID, projectID, assigneeID, posterID, archived)
+	ctx.Data["OpenLink"] = fmt.Sprintf(linkStr, ctx.Link,
+		url.QueryEscape(keyword), url.QueryEscape(viewType), url.QueryEscape(sortType), "open", url.QueryEscape(selectLabels),
+		milestoneID, projectID, assigneeID, posterID, archived)
+	ctx.Data["ClosedLink"] = fmt.Sprintf(linkStr, ctx.Link,
+		url.QueryEscape(keyword), url.QueryEscape(viewType), url.QueryEscape(sortType), "closed", url.QueryEscape(selectLabels),
+		milestoneID, projectID, assigneeID, posterID, archived)
+	ctx.Data["SelLabelIDs"] = labelIDs
+	ctx.Data["SelectLabels"] = selectLabels
+	ctx.Data["ViewType"] = viewType
+	ctx.Data["SortType"] = sortType
+	ctx.Data["MilestoneID"] = milestoneID
+	ctx.Data["ProjectID"] = projectID
+	ctx.Data["AssigneeID"] = assigneeID
+	ctx.Data["PosterID"] = posterID
+	ctx.Data["Keyword"] = keyword
+	ctx.Data["IsShowClosed"] = isShowClosed
+	switch {
+	case isShowClosed.Value():
+		ctx.Data["State"] = "closed"
+	case !isShowClosed.Has():
+		ctx.Data["State"] = "all"
+	default:
+		ctx.Data["State"] = "open"
+	}
+	ctx.Data["ShowArchivedLabels"] = archived
+
+	pager.AddParamString("q", keyword)
+	pager.AddParamString("type", viewType)
+	pager.AddParamString("sort", sortType)
+	pager.AddParamString("state", fmt.Sprint(ctx.Data["State"]))
+	pager.AddParamString("labels", fmt.Sprint(selectLabels))
+	pager.AddParamString("milestone", fmt.Sprint(milestoneID))
+	pager.AddParamString("project", fmt.Sprint(projectID))
+	pager.AddParamString("assignee", fmt.Sprint(assigneeID))
+	pager.AddParamString("poster", fmt.Sprint(posterID))
+	pager.AddParamString("archived", fmt.Sprint(archived))
+
+	ctx.Data["Page"] = pager
+}
+
+// Issues render issues page
+func Issues(ctx *context.Context) {
+	isPullList := ctx.PathParam(":type") == "pulls"
+	if isPullList {
+		MustAllowPulls(ctx)
+		if ctx.Written() {
+			return
+		}
+		ctx.Data["Title"] = ctx.Tr("repo.pulls")
+		ctx.Data["PageIsPullList"] = true
+	} else {
+		MustEnableIssues(ctx)
+		if ctx.Written() {
+			return
+		}
+		ctx.Data["Title"] = ctx.Tr("repo.issues")
+		ctx.Data["PageIsIssueList"] = true
+		ctx.Data["NewIssueChooseTemplate"] = issue_service.HasTemplatesOrContactLinks(ctx.Repo.Repository, ctx.Repo.GitRepo)
+	}
+
+	issues(ctx, ctx.FormInt64("milestone"), ctx.FormInt64("project"), optional.Some(isPullList))
+	if ctx.Written() {
+		return
+	}
+
+	renderMilestones(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	ctx.Data["CanWriteIssuesOrPulls"] = ctx.Repo.CanWriteIssuesOrPulls(isPullList)
+
+	ctx.HTML(http.StatusOK, tplIssues)
+}
--- a/routers/web/repo/issue_new.go
+++ b/routers/web/repo/issue_new.go
@ -0,0 +1,403 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repo
+
+import (
+	"errors"
+	"fmt"
+	"html/template"
+	"net/http"
+	"slices"
+	"sort"
+	"strconv"
+	"strings"
+
+	issues_model "code.gitea.io/gitea/models/issues"
+	"code.gitea.io/gitea/models/organization"
+	project_model "code.gitea.io/gitea/models/project"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unit"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/container"
+	"code.gitea.io/gitea/modules/git"
+	issue_template "code.gitea.io/gitea/modules/issue/template"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
+	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/modules/web"
+	"code.gitea.io/gitea/routers/utils"
+	"code.gitea.io/gitea/services/context"
+	"code.gitea.io/gitea/services/context/upload"
+	"code.gitea.io/gitea/services/forms"
+	issue_service "code.gitea.io/gitea/services/issue"
+)
+
+// Tries to load and set an issue template. The first return value indicates if a template was loaded.
+func setTemplateIfExists(ctx *context.Context, ctxDataKey string, possibleFiles []string, metaData *IssuePageMetaData) (bool, map[string]error) {
+	commit, err := ctx.Repo.GitRepo.GetBranchCommit(ctx.Repo.Repository.DefaultBranch)
+	if err != nil {
+		return false, nil
+	}
+
+	templateCandidates := make([]string, 0, 1+len(possibleFiles))
+	if t := ctx.FormString("template"); t != "" {
+		templateCandidates = append(templateCandidates, t)
+	}
+	templateCandidates = append(templateCandidates, possibleFiles...) // Append files to the end because they should be fallback
+
+	templateErrs := map[string]error{}
+	for _, filename := range templateCandidates {
+		if ok, _ := commit.HasFile(filename); !ok {
+			continue
+		}
+		template, err := issue_template.UnmarshalFromCommit(commit, filename)
+		if err != nil {
+			templateErrs[filename] = err
+			continue
+		}
+		ctx.Data[issueTemplateTitleKey] = template.Title
+		ctx.Data[ctxDataKey] = template.Content
+
+		if template.Type() == api.IssueTemplateTypeYaml {
+			// Replace field default values by values from query
+			for _, field := range template.Fields {
+				fieldValue := ctx.FormString("field:" + field.ID)
+				if fieldValue != "" {
+					field.Attributes["value"] = fieldValue
+				}
+			}
+
+			ctx.Data["Fields"] = template.Fields
+			ctx.Data["TemplateFile"] = template.FileName
+		}
+
+		metaData.LabelsData.SetSelectedLabelNames(template.Labels)
+
+		selectedAssigneeIDStrings := make([]string, 0, len(template.Assignees))
+		if userIDs, err := user_model.GetUserIDsByNames(ctx, template.Assignees, true); err == nil {
+			for _, userID := range userIDs {
+				selectedAssigneeIDStrings = append(selectedAssigneeIDStrings, strconv.FormatInt(userID, 10))
+			}
+		}
+		metaData.AssigneesData.SelectedAssigneeIDs = strings.Join(selectedAssigneeIDStrings, ",")
+
+		if template.Ref != "" && !strings.HasPrefix(template.Ref, "refs/") { // Assume that the ref intended is always a branch - for tags users should use refs/tags/<ref>
+			template.Ref = git.BranchPrefix + template.Ref
+		}
+
+		ctx.Data["Reference"] = template.Ref
+		ctx.Data["RefEndName"] = git.RefName(template.Ref).ShortName()
+		return true, templateErrs
+	}
+	return false, templateErrs
+}
+
+// NewIssue render creating issue page
+func NewIssue(ctx *context.Context) {
+	issueConfig, _ := issue_service.GetTemplateConfigFromDefaultBranch(ctx.Repo.Repository, ctx.Repo.GitRepo)
+	hasTemplates := issue_service.HasTemplatesOrContactLinks(ctx.Repo.Repository, ctx.Repo.GitRepo)
+
+	ctx.Data["Title"] = ctx.Tr("repo.issues.new")
+	ctx.Data["PageIsIssueList"] = true
+	ctx.Data["NewIssueChooseTemplate"] = hasTemplates
+	ctx.Data["PullRequestWorkInProgressPrefixes"] = setting.Repository.PullRequest.WorkInProgressPrefixes
+	title := ctx.FormString("title")
+	ctx.Data["TitleQuery"] = title
+	body := ctx.FormString("body")
+	ctx.Data["BodyQuery"] = body
+
+	isProjectsEnabled := ctx.Repo.CanRead(unit.TypeProjects)
+	ctx.Data["IsProjectsEnabled"] = isProjectsEnabled
+	ctx.Data["IsAttachmentEnabled"] = setting.Attachment.Enabled
+	upload.AddUploadContext(ctx, "comment")
+
+	pageMetaData := retrieveRepoIssueMetaData(ctx, ctx.Repo.Repository, nil, false)
+	if ctx.Written() {
+		return
+	}
+
+	pageMetaData.MilestonesData.SelectedMilestoneID = ctx.FormInt64("milestone")
+	pageMetaData.ProjectsData.SelectedProjectID = ctx.FormInt64("project")
+	if pageMetaData.ProjectsData.SelectedProjectID > 0 {
+		if len(ctx.Req.URL.Query().Get("project")) > 0 {
+			ctx.Data["redirect_after_creation"] = "project"
+		}
+	}
+
+	tags, err := repo_model.GetTagNamesByRepoID(ctx, ctx.Repo.Repository.ID)
+	if err != nil {
+		ctx.ServerError("GetTagNamesByRepoID", err)
+		return
+	}
+	ctx.Data["Tags"] = tags
+
+	ret := issue_service.ParseTemplatesFromDefaultBranch(ctx.Repo.Repository, ctx.Repo.GitRepo)
+	templateLoaded, errs := setTemplateIfExists(ctx, issueTemplateKey, IssueTemplateCandidates, pageMetaData)
+	for k, v := range errs {
+		ret.TemplateErrors[k] = v
+	}
+	if ctx.Written() {
+		return
+	}
+
+	if len(ret.TemplateErrors) > 0 {
+		ctx.Flash.Warning(renderErrorOfTemplates(ctx, ret.TemplateErrors), true)
+	}
+
+	ctx.Data["HasIssuesOrPullsWritePermission"] = ctx.Repo.CanWrite(unit.TypeIssues)
+
+	if !issueConfig.BlankIssuesEnabled && hasTemplates && !templateLoaded {
+		// The "issues/new" and "issues/new/choose" share the same query parameters "project" and "milestone", if blank issues are disabled, just redirect to the "issues/choose" page with these parameters.
+		ctx.Redirect(fmt.Sprintf("%s/issues/new/choose?%s", ctx.Repo.Repository.Link(), ctx.Req.URL.RawQuery), http.StatusSeeOther)
+		return
+	}
+
+	ctx.HTML(http.StatusOK, tplIssueNew)
+}
+
+func renderErrorOfTemplates(ctx *context.Context, errs map[string]error) template.HTML {
+	var files []string
+	for k := range errs {
+		files = append(files, k)
+	}
+	sort.Strings(files) // keep the output stable
+
+	var lines []string
+	for _, file := range files {
+		lines = append(lines, fmt.Sprintf("%s: %v", file, errs[file]))
+	}
+
+	flashError, err := ctx.RenderToHTML(tplAlertDetails, map[string]any{
+		"Message": ctx.Tr("repo.issues.choose.ignore_invalid_templates"),
+		"Summary": ctx.Tr("repo.issues.choose.invalid_templates", len(errs)),
+		"Details": utils.SanitizeFlashErrorString(strings.Join(lines, "\n")),
+	})
+	if err != nil {
+		log.Debug("render flash error: %v", err)
+		flashError = ctx.Locale.Tr("repo.issues.choose.ignore_invalid_templates")
+	}
+	return flashError
+}
+
+// NewIssueChooseTemplate render creating issue from template page
+func NewIssueChooseTemplate(ctx *context.Context) {
+	ctx.Data["Title"] = ctx.Tr("repo.issues.new")
+	ctx.Data["PageIsIssueList"] = true
+
+	ret := issue_service.ParseTemplatesFromDefaultBranch(ctx.Repo.Repository, ctx.Repo.GitRepo)
+	ctx.Data["IssueTemplates"] = ret.IssueTemplates
+
+	if len(ret.TemplateErrors) > 0 {
+		ctx.Flash.Warning(renderErrorOfTemplates(ctx, ret.TemplateErrors), true)
+	}
+
+	if !issue_service.HasTemplatesOrContactLinks(ctx.Repo.Repository, ctx.Repo.GitRepo) {
+		// The "issues/new" and "issues/new/choose" share the same query parameters "project" and "milestone", if no template here, just redirect to the "issues/new" page with these parameters.
+		ctx.Redirect(fmt.Sprintf("%s/issues/new?%s", ctx.Repo.Repository.Link(), ctx.Req.URL.RawQuery), http.StatusSeeOther)
+		return
+	}
+
+	issueConfig, err := issue_service.GetTemplateConfigFromDefaultBranch(ctx.Repo.Repository, ctx.Repo.GitRepo)
+	ctx.Data["IssueConfig"] = issueConfig
+	ctx.Data["IssueConfigError"] = err // ctx.Flash.Err makes problems here
+
+	ctx.Data["milestone"] = ctx.FormInt64("milestone")
+	ctx.Data["project"] = ctx.FormInt64("project")
+
+	ctx.HTML(http.StatusOK, tplIssueChoose)
+}
+
+// DeleteIssue deletes an issue
+func DeleteIssue(ctx *context.Context) {
+	issue := GetActionIssue(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	if err := issue_service.DeleteIssue(ctx, ctx.Doer, ctx.Repo.GitRepo, issue); err != nil {
+		ctx.ServerError("DeleteIssueByID", err)
+		return
+	}
+
+	if issue.IsPull {
+		ctx.Redirect(fmt.Sprintf("%s/pulls", ctx.Repo.Repository.Link()), http.StatusSeeOther)
+		return
+	}
+
+	ctx.Redirect(fmt.Sprintf("%s/issues", ctx.Repo.Repository.Link()), http.StatusSeeOther)
+}
+
+func toSet[ItemType any, KeyType comparable](slice []ItemType, keyFunc func(ItemType) KeyType) container.Set[KeyType] {
+	s := make(container.Set[KeyType])
+	for _, item := range slice {
+		s.Add(keyFunc(item))
+	}
+	return s
+}
+
+// ValidateRepoMetasForNewIssue check and returns repository's meta information
+func ValidateRepoMetasForNewIssue(ctx *context.Context, form forms.CreateIssueForm, isPull bool) (ret struct {
+	LabelIDs, AssigneeIDs  []int64
+	MilestoneID, ProjectID int64
+
+	Reviewers     []*user_model.User
+	TeamReviewers []*organization.Team
+},
+) {
+	pageMetaData := retrieveRepoIssueMetaData(ctx, ctx.Repo.Repository, nil, isPull)
+	if ctx.Written() {
+		return ret
+	}
+
+	inputLabelIDs, _ := base.StringsToInt64s(strings.Split(form.LabelIDs, ","))
+	candidateLabels := toSet(pageMetaData.LabelsData.AllLabels, func(label *issues_model.Label) int64 { return label.ID })
+	if len(inputLabelIDs) > 0 && !candidateLabels.Contains(inputLabelIDs...) {
+		ctx.NotFound("", nil)
+		return ret
+	}
+	pageMetaData.LabelsData.SetSelectedLabelIDs(inputLabelIDs)
+
+	allMilestones := append(slices.Clone(pageMetaData.MilestonesData.OpenMilestones), pageMetaData.MilestonesData.ClosedMilestones...)
+	candidateMilestones := toSet(allMilestones, func(milestone *issues_model.Milestone) int64 { return milestone.ID })
+	if form.MilestoneID > 0 && !candidateMilestones.Contains(form.MilestoneID) {
+		ctx.NotFound("", nil)
+		return ret
+	}
+	pageMetaData.MilestonesData.SelectedMilestoneID = form.MilestoneID
+
+	allProjects := append(slices.Clone(pageMetaData.ProjectsData.OpenProjects), pageMetaData.ProjectsData.ClosedProjects...)
+	candidateProjects := toSet(allProjects, func(project *project_model.Project) int64 { return project.ID })
+	if form.ProjectID > 0 && !candidateProjects.Contains(form.ProjectID) {
+		ctx.NotFound("", nil)
+		return ret
+	}
+	pageMetaData.ProjectsData.SelectedProjectID = form.ProjectID
+
+	candidateAssignees := toSet(pageMetaData.AssigneesData.CandidateAssignees, func(user *user_model.User) int64 { return user.ID })
+	inputAssigneeIDs, _ := base.StringsToInt64s(strings.Split(form.AssigneeIDs, ","))
+	if len(inputAssigneeIDs) > 0 && !candidateAssignees.Contains(inputAssigneeIDs...) {
+		ctx.NotFound("", nil)
+		return ret
+	}
+	pageMetaData.AssigneesData.SelectedAssigneeIDs = form.AssigneeIDs
+
+	// Check if the passed reviewers (user/team) actually exist
+	var reviewers []*user_model.User
+	var teamReviewers []*organization.Team
+	reviewerIDs, _ := base.StringsToInt64s(strings.Split(form.ReviewerIDs, ","))
+	if isPull && len(reviewerIDs) > 0 {
+		userReviewersMap := map[int64]*user_model.User{}
+		teamReviewersMap := map[int64]*organization.Team{}
+		for _, r := range pageMetaData.ReviewersData.Reviewers {
+			userReviewersMap[r.User.ID] = r.User
+		}
+		for _, r := range pageMetaData.ReviewersData.TeamReviewers {
+			teamReviewersMap[r.Team.ID] = r.Team
+		}
+		for _, rID := range reviewerIDs {
+			if rID < 0 { // negative reviewIDs represent team requests
+				team, ok := teamReviewersMap[-rID]
+				if !ok {
+					ctx.NotFound("", nil)
+					return ret
+				}
+				teamReviewers = append(teamReviewers, team)
+			} else {
+				user, ok := userReviewersMap[rID]
+				if !ok {
+					ctx.NotFound("", nil)
+					return ret
+				}
+				reviewers = append(reviewers, user)
+			}
+		}
+	}
+
+	ret.LabelIDs, ret.AssigneeIDs, ret.MilestoneID, ret.ProjectID = inputLabelIDs, inputAssigneeIDs, form.MilestoneID, form.ProjectID
+	ret.Reviewers, ret.TeamReviewers = reviewers, teamReviewers
+	return ret
+}
+
+// NewIssuePost response for creating new issue
+func NewIssuePost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*forms.CreateIssueForm)
+	ctx.Data["Title"] = ctx.Tr("repo.issues.new")
+	ctx.Data["PageIsIssueList"] = true
+	ctx.Data["NewIssueChooseTemplate"] = issue_service.HasTemplatesOrContactLinks(ctx.Repo.Repository, ctx.Repo.GitRepo)
+	ctx.Data["PullRequestWorkInProgressPrefixes"] = setting.Repository.PullRequest.WorkInProgressPrefixes
+	ctx.Data["IsAttachmentEnabled"] = setting.Attachment.Enabled
+	upload.AddUploadContext(ctx, "comment")
+
+	var (
+		repo        = ctx.Repo.Repository
+		attachments []string
+	)
+
+	validateRet := ValidateRepoMetasForNewIssue(ctx, *form, false)
+	if ctx.Written() {
+		return
+	}
+
+	labelIDs, assigneeIDs, milestoneID, projectID := validateRet.LabelIDs, validateRet.AssigneeIDs, validateRet.MilestoneID, validateRet.ProjectID
+
+	if projectID > 0 {
+		if !ctx.Repo.CanRead(unit.TypeProjects) {
+			// User must also be able to see the project.
+			ctx.Error(http.StatusBadRequest, "user hasn't permissions to read projects")
+			return
+		}
+	}
+
+	if setting.Attachment.Enabled {
+		attachments = form.Files
+	}
+
+	if ctx.HasError() {
+		ctx.JSONError(ctx.GetErrMsg())
+		return
+	}
+
+	if util.IsEmptyString(form.Title) {
+		ctx.JSONError(ctx.Tr("repo.issues.new.title_empty"))
+		return
+	}
+
+	content := form.Content
+	if filename := ctx.Req.Form.Get("template-file"); filename != "" {
+		if template, err := issue_template.UnmarshalFromRepo(ctx.Repo.GitRepo, ctx.Repo.Repository.DefaultBranch, filename); err == nil {
+			content = issue_template.RenderToMarkdown(template, ctx.Req.Form)
+		}
+	}
+
+	issue := &issues_model.Issue{
+		RepoID:      repo.ID,
+		Repo:        repo,
+		Title:       form.Title,
+		PosterID:    ctx.Doer.ID,
+		Poster:      ctx.Doer,
+		MilestoneID: milestoneID,
+		Content:     content,
+		Ref:         form.Ref,
+	}
+
+	if err := issue_service.NewIssue(ctx, repo, issue, labelIDs, attachments, assigneeIDs, projectID); err != nil {
+		if repo_model.IsErrUserDoesNotHaveAccessToRepo(err) {
+			ctx.Error(http.StatusBadRequest, "UserDoesNotHaveAccessToRepo", err.Error())
+		} else if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.JSONError(ctx.Tr("repo.issues.new.blocked_user"))
+		} else {
+			ctx.ServerError("NewIssue", err)
+		}
+		return
+	}
+
+	log.Trace("Issue created: %d/%d", repo.ID, issue.ID)
+	if ctx.FormString("redirect_after_creation") == "project" && projectID > 0 {
+		ctx.JSONRedirect(ctx.Repo.RepoLink + "/projects/" + strconv.FormatInt(projectID, 10))
+	} else {
+		ctx.JSONRedirect(issue.Link())
+	}
+}
--- a/routers/web/repo/issue_page_meta.go
+++ b/routers/web/repo/issue_page_meta.go
@ -0,0 +1,444 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repo
+
+import (
+	"sort"
+	"strconv"
+	"strings"
+
+	"code.gitea.io/gitea/models/db"
+	issues_model "code.gitea.io/gitea/models/issues"
+	"code.gitea.io/gitea/models/organization"
+	project_model "code.gitea.io/gitea/models/project"
+	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/container"
+	"code.gitea.io/gitea/modules/optional"
+	shared_user "code.gitea.io/gitea/routers/web/shared/user"
+	"code.gitea.io/gitea/services/context"
+	issue_service "code.gitea.io/gitea/services/issue"
+	repo_service "code.gitea.io/gitea/services/repository"
+)
+
+type issueSidebarMilestoneData struct {
+	SelectedMilestoneID int64
+	OpenMilestones      []*issues_model.Milestone
+	ClosedMilestones    []*issues_model.Milestone
+}
+
+type issueSidebarAssigneesData struct {
+	SelectedAssigneeIDs string
+	CandidateAssignees  []*user_model.User
+}
+
+type issueSidebarProjectsData struct {
+	SelectedProjectID int64
+	OpenProjects      []*project_model.Project
+	ClosedProjects    []*project_model.Project
+}
+
+type IssuePageMetaData struct {
+	RepoLink             string
+	Repository           *repo_model.Repository
+	Issue                *issues_model.Issue
+	IsPullRequest        bool
+	CanModifyIssueOrPull bool
+
+	ReviewersData  *issueSidebarReviewersData
+	LabelsData     *issueSidebarLabelsData
+	MilestonesData *issueSidebarMilestoneData
+	ProjectsData   *issueSidebarProjectsData
+	AssigneesData  *issueSidebarAssigneesData
+}
+
+func retrieveRepoIssueMetaData(ctx *context.Context, repo *repo_model.Repository, issue *issues_model.Issue, isPull bool) *IssuePageMetaData {
+	data := &IssuePageMetaData{
+		RepoLink:      ctx.Repo.RepoLink,
+		Repository:    repo,
+		Issue:         issue,
+		IsPullRequest: isPull,
+
+		ReviewersData:  &issueSidebarReviewersData{},
+		LabelsData:     &issueSidebarLabelsData{},
+		MilestonesData: &issueSidebarMilestoneData{},
+		ProjectsData:   &issueSidebarProjectsData{},
+		AssigneesData:  &issueSidebarAssigneesData{},
+	}
+	ctx.Data["IssuePageMetaData"] = data
+
+	if isPull {
+		data.retrieveReviewersData(ctx)
+		if ctx.Written() {
+			return data
+		}
+	}
+	data.retrieveLabelsData(ctx)
+	if ctx.Written() {
+		return data
+	}
+
+	data.CanModifyIssueOrPull = ctx.Repo.CanWriteIssuesOrPulls(isPull) && !ctx.Repo.Repository.IsArchived
+	if !data.CanModifyIssueOrPull {
+		return data
+	}
+
+	data.retrieveAssigneesDataForIssueWriter(ctx)
+	if ctx.Written() {
+		return data
+	}
+
+	data.retrieveMilestonesDataForIssueWriter(ctx)
+	if ctx.Written() {
+		return data
+	}
+
+	data.retrieveProjectsDataForIssueWriter(ctx)
+	if ctx.Written() {
+		return data
+	}
+
+	PrepareBranchList(ctx)
+	if ctx.Written() {
+		return data
+	}
+
+	ctx.Data["CanCreateIssueDependencies"] = ctx.Repo.CanCreateIssueDependencies(ctx, ctx.Doer, isPull)
+	return data
+}
+
+func (d *IssuePageMetaData) retrieveMilestonesDataForIssueWriter(ctx *context.Context) {
+	var err error
+	if d.Issue != nil {
+		d.MilestonesData.SelectedMilestoneID = d.Issue.MilestoneID
+	}
+	d.MilestonesData.OpenMilestones, err = db.Find[issues_model.Milestone](ctx, issues_model.FindMilestoneOptions{
+		RepoID:   d.Repository.ID,
+		IsClosed: optional.Some(false),
+	})
+	if err != nil {
+		ctx.ServerError("GetMilestones", err)
+		return
+	}
+	d.MilestonesData.ClosedMilestones, err = db.Find[issues_model.Milestone](ctx, issues_model.FindMilestoneOptions{
+		RepoID:   d.Repository.ID,
+		IsClosed: optional.Some(true),
+	})
+	if err != nil {
+		ctx.ServerError("GetMilestones", err)
+		return
+	}
+}
+
+func (d *IssuePageMetaData) retrieveAssigneesDataForIssueWriter(ctx *context.Context) {
+	var err error
+	d.AssigneesData.CandidateAssignees, err = repo_model.GetRepoAssignees(ctx, d.Repository)
+	if err != nil {
+		ctx.ServerError("GetRepoAssignees", err)
+		return
+	}
+	d.AssigneesData.CandidateAssignees = shared_user.MakeSelfOnTop(ctx.Doer, d.AssigneesData.CandidateAssignees)
+	if d.Issue != nil {
+		_ = d.Issue.LoadAssignees(ctx)
+		ids := make([]string, 0, len(d.Issue.Assignees))
+		for _, a := range d.Issue.Assignees {
+			ids = append(ids, strconv.FormatInt(a.ID, 10))
+		}
+		d.AssigneesData.SelectedAssigneeIDs = strings.Join(ids, ",")
+	}
+	// FIXME: this is a tricky part which writes ctx.Data["Mentionable*"]
+	handleTeamMentions(ctx)
+}
+
+func (d *IssuePageMetaData) retrieveProjectsDataForIssueWriter(ctx *context.Context) {
+	if d.Issue != nil && d.Issue.Project != nil {
+		d.ProjectsData.SelectedProjectID = d.Issue.Project.ID
+	}
+	d.ProjectsData.OpenProjects, d.ProjectsData.ClosedProjects = retrieveProjectsInternal(ctx, ctx.Repo.Repository)
+}
+
+// repoReviewerSelection items to bee shown
+type repoReviewerSelection struct {
+	IsTeam         bool
+	Team           *organization.Team
+	User           *user_model.User
+	Review         *issues_model.Review
+	CanBeDismissed bool
+	CanChange      bool
+	Requested      bool
+	ItemID         int64
+}
+
+type issueSidebarReviewersData struct {
+	CanChooseReviewer    bool
+	OriginalReviews      issues_model.ReviewList
+	TeamReviewers        []*repoReviewerSelection
+	Reviewers            []*repoReviewerSelection
+	CurrentPullReviewers []*repoReviewerSelection
+}
+
+// RetrieveRepoReviewers find all reviewers of a repository. If issue is nil, it means the doer is creating a new PR.
+func (d *IssuePageMetaData) retrieveReviewersData(ctx *context.Context) {
+	data := d.ReviewersData
+	repo := d.Repository
+	if ctx.Doer != nil && ctx.IsSigned {
+		if d.Issue == nil {
+			data.CanChooseReviewer = true
+		} else {
+			data.CanChooseReviewer = issue_service.CanDoerChangeReviewRequests(ctx, ctx.Doer, repo, d.Issue)
+		}
+	}
+
+	var posterID int64
+	var isClosed bool
+	var reviews issues_model.ReviewList
+
+	if d.Issue == nil {
+		posterID = ctx.Doer.ID
+	} else {
+		posterID = d.Issue.PosterID
+		if d.Issue.OriginalAuthorID > 0 {
+			posterID = 0 // for migrated PRs, no poster ID
+		}
+
+		isClosed = d.Issue.IsClosed || d.Issue.PullRequest.HasMerged
+
+		originalAuthorReviews, err := issues_model.GetReviewersFromOriginalAuthorsByIssueID(ctx, d.Issue.ID)
+		if err != nil {
+			ctx.ServerError("GetReviewersFromOriginalAuthorsByIssueID", err)
+			return
+		}
+		data.OriginalReviews = originalAuthorReviews
+
+		reviews, err = issues_model.GetReviewsByIssueID(ctx, d.Issue.ID)
+		if err != nil {
+			ctx.ServerError("GetReviewersByIssueID", err)
+			return
+		}
+		if len(reviews) == 0 && !data.CanChooseReviewer {
+			return
+		}
+	}
+
+	var (
+		pullReviews         []*repoReviewerSelection
+		reviewersResult     []*repoReviewerSelection
+		teamReviewersResult []*repoReviewerSelection
+		teamReviewers       []*organization.Team
+		reviewers           []*user_model.User
+	)
+
+	if data.CanChooseReviewer {
+		var err error
+		reviewers, err = repo_model.GetReviewers(ctx, repo, ctx.Doer.ID, posterID)
+		if err != nil {
+			ctx.ServerError("GetReviewers", err)
+			return
+		}
+
+		teamReviewers, err = repo_service.GetReviewerTeams(ctx, repo)
+		if err != nil {
+			ctx.ServerError("GetReviewerTeams", err)
+			return
+		}
+
+		if len(reviewers) > 0 {
+			reviewersResult = make([]*repoReviewerSelection, 0, len(reviewers))
+		}
+
+		if len(teamReviewers) > 0 {
+			teamReviewersResult = make([]*repoReviewerSelection, 0, len(teamReviewers))
+		}
+	}
+
+	pullReviews = make([]*repoReviewerSelection, 0, len(reviews))
+
+	for _, review := range reviews {
+		tmp := &repoReviewerSelection{
+			Requested: review.Type == issues_model.ReviewTypeRequest,
+			Review:    review,
+			ItemID:    review.ReviewerID,
+		}
+		if review.ReviewerTeamID > 0 {
+			tmp.IsTeam = true
+			tmp.ItemID = -review.ReviewerTeamID
+		}
+
+		if data.CanChooseReviewer {
+			// Users who can choose reviewers can also remove review requests
+			tmp.CanChange = true
+		} else if ctx.Doer != nil && ctx.Doer.ID == review.ReviewerID && review.Type == issues_model.ReviewTypeRequest {
+			// A user can refuse review requests
+			tmp.CanChange = true
+		}
+
+		pullReviews = append(pullReviews, tmp)
+
+		if data.CanChooseReviewer {
+			if tmp.IsTeam {
+				teamReviewersResult = append(teamReviewersResult, tmp)
+			} else {
+				reviewersResult = append(reviewersResult, tmp)
+			}
+		}
+	}
+
+	if len(pullReviews) > 0 {
+		// Drop all non-existing users and teams from the reviews
+		currentPullReviewers := make([]*repoReviewerSelection, 0, len(pullReviews))
+		for _, item := range pullReviews {
+			if item.Review.ReviewerID > 0 {
+				if err := item.Review.LoadReviewer(ctx); err != nil {
+					if user_model.IsErrUserNotExist(err) {
+						continue
+					}
+					ctx.ServerError("LoadReviewer", err)
+					return
+				}
+				item.User = item.Review.Reviewer
+			} else if item.Review.ReviewerTeamID > 0 {
+				if err := item.Review.LoadReviewerTeam(ctx); err != nil {
+					if organization.IsErrTeamNotExist(err) {
+						continue
+					}
+					ctx.ServerError("LoadReviewerTeam", err)
+					return
+				}
+				item.Team = item.Review.ReviewerTeam
+			} else {
+				continue
+			}
+			item.CanBeDismissed = ctx.Repo.Permission.IsAdmin() && !isClosed &&
+				(item.Review.Type == issues_model.ReviewTypeApprove || item.Review.Type == issues_model.ReviewTypeReject)
+			currentPullReviewers = append(currentPullReviewers, item)
+		}
+		data.CurrentPullReviewers = currentPullReviewers
+	}
+
+	if data.CanChooseReviewer && reviewersResult != nil {
+		preadded := len(reviewersResult)
+		for _, reviewer := range reviewers {
+			found := false
+		reviewAddLoop:
+			for _, tmp := range reviewersResult[:preadded] {
+				if tmp.ItemID == reviewer.ID {
+					tmp.User = reviewer
+					found = true
+					break reviewAddLoop
+				}
+			}
+
+			if found {
+				continue
+			}
+
+			reviewersResult = append(reviewersResult, &repoReviewerSelection{
+				IsTeam:    false,
+				CanChange: true,
+				User:      reviewer,
+				ItemID:    reviewer.ID,
+			})
+		}
+
+		data.Reviewers = reviewersResult
+	}
+
+	if data.CanChooseReviewer && teamReviewersResult != nil {
+		preadded := len(teamReviewersResult)
+		for _, team := range teamReviewers {
+			found := false
+		teamReviewAddLoop:
+			for _, tmp := range teamReviewersResult[:preadded] {
+				if tmp.ItemID == -team.ID {
+					tmp.Team = team
+					found = true
+					break teamReviewAddLoop
+				}
+			}
+
+			if found {
+				continue
+			}
+
+			teamReviewersResult = append(teamReviewersResult, &repoReviewerSelection{
+				IsTeam:    true,
+				CanChange: true,
+				Team:      team,
+				ItemID:    -team.ID,
+			})
+		}
+
+		data.TeamReviewers = teamReviewersResult
+	}
+}
+
+type issueSidebarLabelsData struct {
+	AllLabels        []*issues_model.Label
+	RepoLabels       []*issues_model.Label
+	OrgLabels        []*issues_model.Label
+	SelectedLabelIDs string
+}
+
+func makeSelectedStringIDs[KeyType, ItemType comparable](
+	allLabels []*issues_model.Label, candidateKey func(candidate *issues_model.Label) KeyType,
+	selectedItems []ItemType, selectedKey func(selected ItemType) KeyType,
+) string {
+	selectedIDSet := make(container.Set[string])
+	allLabelMap := map[KeyType]*issues_model.Label{}
+	for _, label := range allLabels {
+		allLabelMap[candidateKey(label)] = label
+	}
+	for _, item := range selectedItems {
+		if label, ok := allLabelMap[selectedKey(item)]; ok {
+			label.IsChecked = true
+			selectedIDSet.Add(strconv.FormatInt(label.ID, 10))
+		}
+	}
+	ids := selectedIDSet.Values()
+	sort.Strings(ids)
+	return strings.Join(ids, ",")
+}
+
+func (d *issueSidebarLabelsData) SetSelectedLabels(labels []*issues_model.Label) {
+	d.SelectedLabelIDs = makeSelectedStringIDs(
+		d.AllLabels, func(label *issues_model.Label) int64 { return label.ID },
+		labels, func(label *issues_model.Label) int64 { return label.ID },
+	)
+}
+
+func (d *issueSidebarLabelsData) SetSelectedLabelNames(labelNames []string) {
+	d.SelectedLabelIDs = makeSelectedStringIDs(
+		d.AllLabels, func(label *issues_model.Label) string { return strings.ToLower(label.Name) },
+		labelNames, strings.ToLower,
+	)
+}
+
+func (d *issueSidebarLabelsData) SetSelectedLabelIDs(labelIDs []int64) {
+	d.SelectedLabelIDs = makeSelectedStringIDs(
+		d.AllLabels, func(label *issues_model.Label) int64 { return label.ID },
+		labelIDs, func(labelID int64) int64 { return labelID },
+	)
+}
+
+func (d *IssuePageMetaData) retrieveLabelsData(ctx *context.Context) {
+	repo := d.Repository
+	labelsData := d.LabelsData
+
+	labels, err := issues_model.GetLabelsByRepoID(ctx, repo.ID, "", db.ListOptions{})
+	if err != nil {
+		ctx.ServerError("GetLabelsByRepoID", err)
+		return
+	}
+	labelsData.RepoLabels = labels
+
+	if repo.Owner.IsOrganization() {
+		orgLabels, err := issues_model.GetLabelsByOrgID(ctx, repo.Owner.ID, ctx.FormString("sort"), db.ListOptions{})
+		if err != nil {
+			return
+		}
+		labelsData.OrgLabels = orgLabels
+	}
+	labelsData.AllLabels = append(labelsData.AllLabels, labelsData.RepoLabels...)
+	labelsData.AllLabels = append(labelsData.AllLabels, labelsData.OrgLabels...)
+}
--- a/routers/web/repo/issue_poster.go
+++ b/routers/web/repo/issue_poster.go
@ -0,0 +1,66 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repo
+
+import (
+	"net/http"
+	"slices"
+	"strings"
+
+	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/setting"
+	shared_user "code.gitea.io/gitea/routers/web/shared/user"
+	"code.gitea.io/gitea/services/context"
+)
+
+type userSearchInfo struct {
+	UserID     int64  `json:"user_id"`
+	UserName   string `json:"username"`
+	AvatarLink string `json:"avatar_link"`
+	FullName   string `json:"full_name"`
+}
+
+type userSearchResponse struct {
+	Results []*userSearchInfo `json:"results"`
+}
+
+// IssuePosters get posters for current repo's issues/pull requests
+func IssuePosters(ctx *context.Context) {
+	issuePosters(ctx, false)
+}
+
+func PullPosters(ctx *context.Context) {
+	issuePosters(ctx, true)
+}
+
+func issuePosters(ctx *context.Context, isPullList bool) {
+	repo := ctx.Repo.Repository
+	search := strings.TrimSpace(ctx.FormString("q"))
+	posters, err := repo_model.GetIssuePostersWithSearch(ctx, repo, isPullList, search, setting.UI.DefaultShowFullName)
+	if err != nil {
+		ctx.JSON(http.StatusInternalServerError, err)
+		return
+	}
+
+	if search == "" && ctx.Doer != nil {
+		// the returned posters slice only contains limited number of users,
+		// to make the current user (doer) can quickly filter their own issues, always add doer to the posters slice
+		if !slices.ContainsFunc(posters, func(user *user_model.User) bool { return user.ID == ctx.Doer.ID }) {
+			posters = append(posters, ctx.Doer)
+		}
+	}
+
+	posters = shared_user.MakeSelfOnTop(ctx.Doer, posters)
+
+	resp := &userSearchResponse{}
+	resp.Results = make([]*userSearchInfo, len(posters))
+	for i, user := range posters {
+		resp.Results[i] = &userSearchInfo{UserID: user.ID, UserName: user.Name, AvatarLink: user.AvatarLink(ctx)}
+		if setting.UI.DefaultShowFullName {
+			resp.Results[i].FullName = user.FullName
+		}
+	}
+	ctx.JSON(http.StatusOK, resp)
+}
--- a/routers/web/repo/issue_view.go
+++ b/routers/web/repo/issue_view.go
@ -0,0 +1,914 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repo
+
+import (
+	stdCtx "context"
+	"fmt"
+	"math/big"
+	"net/http"
+	"net/url"
+	"sort"
+
+	activities_model "code.gitea.io/gitea/models/activities"
+	"code.gitea.io/gitea/models/db"
+	git_model "code.gitea.io/gitea/models/git"
+	issues_model "code.gitea.io/gitea/models/issues"
+	"code.gitea.io/gitea/models/organization"
+	access_model "code.gitea.io/gitea/models/perm/access"
+	project_model "code.gitea.io/gitea/models/project"
+	pull_model "code.gitea.io/gitea/models/pull"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unit"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/emoji"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/markup/markdown"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/templates"
+	"code.gitea.io/gitea/modules/templates/vars"
+	asymkey_service "code.gitea.io/gitea/services/asymkey"
+	"code.gitea.io/gitea/services/context"
+	"code.gitea.io/gitea/services/context/upload"
+	issue_service "code.gitea.io/gitea/services/issue"
+	pull_service "code.gitea.io/gitea/services/pull"
+	user_service "code.gitea.io/gitea/services/user"
+)
+
+// roleDescriptor returns the role descriptor for a comment in/with the given repo, poster and issue
+func roleDescriptor(ctx stdCtx.Context, repo *repo_model.Repository, poster *user_model.User, issue *issues_model.Issue, hasOriginalAuthor bool) (issues_model.RoleDescriptor, error) {
+	roleDescriptor := issues_model.RoleDescriptor{}
+
+	if hasOriginalAuthor {
+		return roleDescriptor, nil
+	}
+
+	perm, err := access_model.GetUserRepoPermission(ctx, repo, poster)
+	if err != nil {
+		return roleDescriptor, err
+	}
+
+	// If the poster is the actual poster of the issue, enable Poster role.
+	roleDescriptor.IsPoster = issue.IsPoster(poster.ID)
+
+	// Check if the poster is owner of the repo.
+	if perm.IsOwner() {
+		// If the poster isn't an admin, enable the owner role.
+		if !poster.IsAdmin {
+			roleDescriptor.RoleInRepo = issues_model.RoleRepoOwner
+			return roleDescriptor, nil
+		}
+
+		// Otherwise check if poster is the real repo admin.
+		ok, err := access_model.IsUserRealRepoAdmin(ctx, repo, poster)
+		if err != nil {
+			return roleDescriptor, err
+		}
+		if ok {
+			roleDescriptor.RoleInRepo = issues_model.RoleRepoOwner
+			return roleDescriptor, nil
+		}
+	}
+
+	// If repo is organization, check Member role
+	if err := repo.LoadOwner(ctx); err != nil {
+		return roleDescriptor, err
+	}
+	if repo.Owner.IsOrganization() {
+		if isMember, err := organization.IsOrganizationMember(ctx, repo.Owner.ID, poster.ID); err != nil {
+			return roleDescriptor, err
+		} else if isMember {
+			roleDescriptor.RoleInRepo = issues_model.RoleRepoMember
+			return roleDescriptor, nil
+		}
+	}
+
+	// If the poster is the collaborator of the repo
+	if isCollaborator, err := repo_model.IsCollaborator(ctx, repo.ID, poster.ID); err != nil {
+		return roleDescriptor, err
+	} else if isCollaborator {
+		roleDescriptor.RoleInRepo = issues_model.RoleRepoCollaborator
+		return roleDescriptor, nil
+	}
+
+	hasMergedPR, err := issues_model.HasMergedPullRequestInRepo(ctx, repo.ID, poster.ID)
+	if err != nil {
+		return roleDescriptor, err
+	} else if hasMergedPR {
+		roleDescriptor.RoleInRepo = issues_model.RoleRepoContributor
+	} else if issue.IsPull {
+		// only display first time contributor in the first opening pull request
+		roleDescriptor.RoleInRepo = issues_model.RoleRepoFirstTimeContributor
+	}
+
+	return roleDescriptor, nil
+}
+
+func getBranchData(ctx *context.Context, issue *issues_model.Issue) {
+	ctx.Data["BaseBranch"] = nil
+	ctx.Data["HeadBranch"] = nil
+	ctx.Data["HeadUserName"] = nil
+	ctx.Data["BaseName"] = ctx.Repo.Repository.OwnerName
+	if issue.IsPull {
+		pull := issue.PullRequest
+		ctx.Data["BaseBranch"] = pull.BaseBranch
+		ctx.Data["HeadBranch"] = pull.HeadBranch
+		ctx.Data["HeadUserName"] = pull.MustHeadUserName(ctx)
+	}
+}
+
+// checkBlockedByIssues return canRead and notPermitted
+func checkBlockedByIssues(ctx *context.Context, blockers []*issues_model.DependencyInfo) (canRead, notPermitted []*issues_model.DependencyInfo) {
+	repoPerms := make(map[int64]access_model.Permission)
+	repoPerms[ctx.Repo.Repository.ID] = ctx.Repo.Permission
+	for _, blocker := range blockers {
+		// Get the permissions for this repository
+		// If the repo ID exists in the map, return the exist permissions
+		// else get the permission and add it to the map
+		var perm access_model.Permission
+		existPerm, ok := repoPerms[blocker.RepoID]
+		if ok {
+			perm = existPerm
+		} else {
+			var err error
+			perm, err = access_model.GetUserRepoPermission(ctx, &blocker.Repository, ctx.Doer)
+			if err != nil {
+				ctx.ServerError("GetUserRepoPermission", err)
+				return nil, nil
+			}
+			repoPerms[blocker.RepoID] = perm
+		}
+		if perm.CanReadIssuesOrPulls(blocker.Issue.IsPull) {
+			canRead = append(canRead, blocker)
+		} else {
+			notPermitted = append(notPermitted, blocker)
+		}
+	}
+	sortDependencyInfo(canRead)
+	sortDependencyInfo(notPermitted)
+	return canRead, notPermitted
+}
+
+func sortDependencyInfo(blockers []*issues_model.DependencyInfo) {
+	sort.Slice(blockers, func(i, j int) bool {
+		if blockers[i].RepoID == blockers[j].RepoID {
+			return blockers[i].Issue.CreatedUnix < blockers[j].Issue.CreatedUnix
+		}
+		return blockers[i].RepoID < blockers[j].RepoID
+	})
+}
+
+func addParticipant(poster *user_model.User, participants []*user_model.User) []*user_model.User {
+	for _, part := range participants {
+		if poster.ID == part.ID {
+			return participants
+		}
+	}
+	return append(participants, poster)
+}
+
+func filterXRefComments(ctx *context.Context, issue *issues_model.Issue) error {
+	// Remove comments that the user has no permissions to see
+	for i := 0; i < len(issue.Comments); {
+		c := issue.Comments[i]
+		if issues_model.CommentTypeIsRef(c.Type) && c.RefRepoID != issue.RepoID && c.RefRepoID != 0 {
+			var err error
+			// Set RefRepo for description in template
+			c.RefRepo, err = repo_model.GetRepositoryByID(ctx, c.RefRepoID)
+			if err != nil {
+				return err
+			}
+			perm, err := access_model.GetUserRepoPermission(ctx, c.RefRepo, ctx.Doer)
+			if err != nil {
+				return err
+			}
+			if !perm.CanReadIssuesOrPulls(c.RefIsPull) {
+				issue.Comments = append(issue.Comments[:i], issue.Comments[i+1:]...)
+				continue
+			}
+		}
+		i++
+	}
+	return nil
+}
+
+// combineLabelComments combine the nearby label comments as one.
+func combineLabelComments(issue *issues_model.Issue) {
+	var prev, cur *issues_model.Comment
+	for i := 0; i < len(issue.Comments); i++ {
+		cur = issue.Comments[i]
+		if i > 0 {
+			prev = issue.Comments[i-1]
+		}
+		if i == 0 || cur.Type != issues_model.CommentTypeLabel ||
+			(prev != nil && prev.PosterID != cur.PosterID) ||
+			(prev != nil && cur.CreatedUnix-prev.CreatedUnix >= 60) {
+			if cur.Type == issues_model.CommentTypeLabel && cur.Label != nil {
+				if cur.Content != "1" {
+					cur.RemovedLabels = append(cur.RemovedLabels, cur.Label)
+				} else {
+					cur.AddedLabels = append(cur.AddedLabels, cur.Label)
+				}
+			}
+			continue
+		}
+
+		if cur.Label != nil { // now cur MUST be label comment
+			if prev.Type == issues_model.CommentTypeLabel { // we can combine them only prev is a label comment
+				if cur.Content != "1" {
+					// remove labels from the AddedLabels list if the label that was removed is already
+					// in this list, and if it's not in this list, add the label to RemovedLabels
+					addedAndRemoved := false
+					for i, label := range prev.AddedLabels {
+						if cur.Label.ID == label.ID {
+							prev.AddedLabels = append(prev.AddedLabels[:i], prev.AddedLabels[i+1:]...)
+							addedAndRemoved = true
+							break
+						}
+					}
+					if !addedAndRemoved {
+						prev.RemovedLabels = append(prev.RemovedLabels, cur.Label)
+					}
+				} else {
+					// remove labels from the RemovedLabels list if the label that was added is already
+					// in this list, and if it's not in this list, add the label to AddedLabels
+					removedAndAdded := false
+					for i, label := range prev.RemovedLabels {
+						if cur.Label.ID == label.ID {
+							prev.RemovedLabels = append(prev.RemovedLabels[:i], prev.RemovedLabels[i+1:]...)
+							removedAndAdded = true
+							break
+						}
+					}
+					if !removedAndAdded {
+						prev.AddedLabels = append(prev.AddedLabels, cur.Label)
+					}
+				}
+				prev.CreatedUnix = cur.CreatedUnix
+				// remove the current comment since it has been combined to prev comment
+				issue.Comments = append(issue.Comments[:i], issue.Comments[i+1:]...)
+				i--
+			} else { // if prev is not a label comment, start a new group
+				if cur.Content != "1" {
+					cur.RemovedLabels = append(cur.RemovedLabels, cur.Label)
+				} else {
+					cur.AddedLabels = append(cur.AddedLabels, cur.Label)
+				}
+			}
+		}
+	}
+}
+
+// ViewIssue render issue view page
+func ViewIssue(ctx *context.Context) {
+	if ctx.PathParam(":type") == "issues" {
+		// If issue was requested we check if repo has external tracker and redirect
+		extIssueUnit, err := ctx.Repo.Repository.GetUnit(ctx, unit.TypeExternalTracker)
+		if err == nil && extIssueUnit != nil {
+			if extIssueUnit.ExternalTrackerConfig().ExternalTrackerStyle == markup.IssueNameStyleNumeric || extIssueUnit.ExternalTrackerConfig().ExternalTrackerStyle == "" {
+				metas := ctx.Repo.Repository.ComposeMetas(ctx)
+				metas["index"] = ctx.PathParam(":index")
+				res, err := vars.Expand(extIssueUnit.ExternalTrackerConfig().ExternalTrackerFormat, metas)
+				if err != nil {
+					log.Error("unable to expand template vars for issue url. issue: %s, err: %v", metas["index"], err)
+					ctx.ServerError("Expand", err)
+					return
+				}
+				ctx.Redirect(res)
+				return
+			}
+		} else if err != nil && !repo_model.IsErrUnitTypeNotExist(err) {
+			ctx.ServerError("GetUnit", err)
+			return
+		}
+	}
+
+	issue, err := issues_model.GetIssueByIndex(ctx, ctx.Repo.Repository.ID, ctx.PathParamInt64(":index"))
+	if err != nil {
+		if issues_model.IsErrIssueNotExist(err) {
+			ctx.NotFound("GetIssueByIndex", err)
+		} else {
+			ctx.ServerError("GetIssueByIndex", err)
+		}
+		return
+	}
+	if issue.Repo == nil {
+		issue.Repo = ctx.Repo.Repository
+	}
+
+	// Make sure type and URL matches.
+	if ctx.PathParam(":type") == "issues" && issue.IsPull {
+		ctx.Redirect(issue.Link())
+		return
+	} else if ctx.PathParam(":type") == "pulls" && !issue.IsPull {
+		ctx.Redirect(issue.Link())
+		return
+	}
+
+	if issue.IsPull {
+		MustAllowPulls(ctx)
+		if ctx.Written() {
+			return
+		}
+		ctx.Data["PageIsPullList"] = true
+		ctx.Data["PageIsPullConversation"] = true
+	} else {
+		MustEnableIssues(ctx)
+		if ctx.Written() {
+			return
+		}
+		ctx.Data["PageIsIssueList"] = true
+		ctx.Data["NewIssueChooseTemplate"] = issue_service.HasTemplatesOrContactLinks(ctx.Repo.Repository, ctx.Repo.GitRepo)
+	}
+
+	if issue.IsPull && !ctx.Repo.CanRead(unit.TypeIssues) {
+		ctx.Data["IssueDependencySearchType"] = "pulls"
+	} else if !issue.IsPull && !ctx.Repo.CanRead(unit.TypePullRequests) {
+		ctx.Data["IssueDependencySearchType"] = "issues"
+	} else {
+		ctx.Data["IssueDependencySearchType"] = "all"
+	}
+
+	ctx.Data["IsProjectsEnabled"] = ctx.Repo.CanRead(unit.TypeProjects)
+	ctx.Data["IsAttachmentEnabled"] = setting.Attachment.Enabled
+	upload.AddUploadContext(ctx, "comment")
+
+	if err = issue.LoadAttributes(ctx); err != nil {
+		ctx.ServerError("LoadAttributes", err)
+		return
+	}
+
+	if err = filterXRefComments(ctx, issue); err != nil {
+		ctx.ServerError("filterXRefComments", err)
+		return
+	}
+
+	ctx.Data["Title"] = fmt.Sprintf("#%d - %s", issue.Index, emoji.ReplaceAliases(issue.Title))
+
+	iw := new(issues_model.IssueWatch)
+	if ctx.Doer != nil {
+		iw.UserID = ctx.Doer.ID
+		iw.IssueID = issue.ID
+		iw.IsWatching, err = issues_model.CheckIssueWatch(ctx, ctx.Doer, issue)
+		if err != nil {
+			ctx.ServerError("CheckIssueWatch", err)
+			return
+		}
+	}
+	ctx.Data["IssueWatch"] = iw
+	issue.RenderedContent, err = markdown.RenderString(&markup.RenderContext{
+		Links: markup.Links{
+			Base: ctx.Repo.RepoLink,
+		},
+		Metas:   ctx.Repo.Repository.ComposeMetas(ctx),
+		GitRepo: ctx.Repo.GitRepo,
+		Repo:    ctx.Repo.Repository,
+		Ctx:     ctx,
+	}, issue.Content)
+	if err != nil {
+		ctx.ServerError("RenderString", err)
+		return
+	}
+
+	repo := ctx.Repo.Repository
+
+	// Get more information if it's a pull request.
+	if issue.IsPull {
+		if issue.PullRequest.HasMerged {
+			ctx.Data["DisableStatusChange"] = issue.PullRequest.HasMerged
+			PrepareMergedViewPullInfo(ctx, issue)
+		} else {
+			PrepareViewPullInfo(ctx, issue)
+			ctx.Data["DisableStatusChange"] = ctx.Data["IsPullRequestBroken"] == true && issue.IsClosed
+		}
+		if ctx.Written() {
+			return
+		}
+	}
+
+	pageMetaData := retrieveRepoIssueMetaData(ctx, repo, issue, issue.IsPull)
+	if ctx.Written() {
+		return
+	}
+	pageMetaData.LabelsData.SetSelectedLabels(issue.Labels)
+
+	if ctx.IsSigned {
+		// Update issue-user.
+		if err = activities_model.SetIssueReadBy(ctx, issue.ID, ctx.Doer.ID); err != nil {
+			ctx.ServerError("ReadBy", err)
+			return
+		}
+	}
+
+	var (
+		role                 issues_model.RoleDescriptor
+		ok                   bool
+		marked               = make(map[int64]issues_model.RoleDescriptor)
+		comment              *issues_model.Comment
+		participants         = make([]*user_model.User, 1, 10)
+		latestCloseCommentID int64
+	)
+	if ctx.Repo.Repository.IsTimetrackerEnabled(ctx) {
+		if ctx.IsSigned {
+			// Deal with the stopwatch
+			ctx.Data["IsStopwatchRunning"] = issues_model.StopwatchExists(ctx, ctx.Doer.ID, issue.ID)
+			if !ctx.Data["IsStopwatchRunning"].(bool) {
+				var exists bool
+				var swIssue *issues_model.Issue
+				if exists, _, swIssue, err = issues_model.HasUserStopwatch(ctx, ctx.Doer.ID); err != nil {
+					ctx.ServerError("HasUserStopwatch", err)
+					return
+				}
+				ctx.Data["HasUserStopwatch"] = exists
+				if exists {
+					// Add warning if the user has already a stopwatch
+					// Add link to the issue of the already running stopwatch
+					ctx.Data["OtherStopwatchURL"] = swIssue.Link()
+				}
+			}
+			ctx.Data["CanUseTimetracker"] = ctx.Repo.CanUseTimetracker(ctx, issue, ctx.Doer)
+		} else {
+			ctx.Data["CanUseTimetracker"] = false
+		}
+		if ctx.Data["WorkingUsers"], err = issues_model.TotalTimesForEachUser(ctx, &issues_model.FindTrackedTimesOptions{IssueID: issue.ID}); err != nil {
+			ctx.ServerError("TotalTimesForEachUser", err)
+			return
+		}
+	}
+
+	// Check if the user can use the dependencies
+	ctx.Data["CanCreateIssueDependencies"] = ctx.Repo.CanCreateIssueDependencies(ctx, ctx.Doer, issue.IsPull)
+
+	// check if dependencies can be created across repositories
+	ctx.Data["AllowCrossRepositoryDependencies"] = setting.Service.AllowCrossRepositoryDependencies
+
+	if issue.ShowRole, err = roleDescriptor(ctx, repo, issue.Poster, issue, issue.HasOriginalAuthor()); err != nil {
+		ctx.ServerError("roleDescriptor", err)
+		return
+	}
+	marked[issue.PosterID] = issue.ShowRole
+
+	// Render comments and fetch participants.
+	participants[0] = issue.Poster
+
+	if err := issue.Comments.LoadAttachmentsByIssue(ctx); err != nil {
+		ctx.ServerError("LoadAttachmentsByIssue", err)
+		return
+	}
+	if err := issue.Comments.LoadPosters(ctx); err != nil {
+		ctx.ServerError("LoadPosters", err)
+		return
+	}
+
+	for _, comment = range issue.Comments {
+		comment.Issue = issue
+
+		if comment.Type == issues_model.CommentTypeComment || comment.Type == issues_model.CommentTypeReview {
+			comment.RenderedContent, err = markdown.RenderString(&markup.RenderContext{
+				Links: markup.Links{
+					Base: ctx.Repo.RepoLink,
+				},
+				Metas:   ctx.Repo.Repository.ComposeMetas(ctx),
+				GitRepo: ctx.Repo.GitRepo,
+				Repo:    ctx.Repo.Repository,
+				Ctx:     ctx,
+			}, comment.Content)
+			if err != nil {
+				ctx.ServerError("RenderString", err)
+				return
+			}
+			// Check tag.
+			role, ok = marked[comment.PosterID]
+			if ok {
+				comment.ShowRole = role
+				continue
+			}
+
+			comment.ShowRole, err = roleDescriptor(ctx, repo, comment.Poster, issue, comment.HasOriginalAuthor())
+			if err != nil {
+				ctx.ServerError("roleDescriptor", err)
+				return
+			}
+			marked[comment.PosterID] = comment.ShowRole
+			participants = addParticipant(comment.Poster, participants)
+		} else if comment.Type == issues_model.CommentTypeLabel {
+			if err = comment.LoadLabel(ctx); err != nil {
+				ctx.ServerError("LoadLabel", err)
+				return
+			}
+		} else if comment.Type == issues_model.CommentTypeMilestone {
+			if err = comment.LoadMilestone(ctx); err != nil {
+				ctx.ServerError("LoadMilestone", err)
+				return
+			}
+			ghostMilestone := &issues_model.Milestone{
+				ID:   -1,
+				Name: ctx.Locale.TrString("repo.issues.deleted_milestone"),
+			}
+			if comment.OldMilestoneID > 0 && comment.OldMilestone == nil {
+				comment.OldMilestone = ghostMilestone
+			}
+			if comment.MilestoneID > 0 && comment.Milestone == nil {
+				comment.Milestone = ghostMilestone
+			}
+		} else if comment.Type == issues_model.CommentTypeProject {
+			if err = comment.LoadProject(ctx); err != nil {
+				ctx.ServerError("LoadProject", err)
+				return
+			}
+
+			ghostProject := &project_model.Project{
+				ID:    project_model.GhostProjectID,
+				Title: ctx.Locale.TrString("repo.issues.deleted_project"),
+			}
+
+			if comment.OldProjectID > 0 && comment.OldProject == nil {
+				comment.OldProject = ghostProject
+			}
+
+			if comment.ProjectID > 0 && comment.Project == nil {
+				comment.Project = ghostProject
+			}
+		} else if comment.Type == issues_model.CommentTypeProjectColumn {
+			if err = comment.LoadProject(ctx); err != nil {
+				ctx.ServerError("LoadProject", err)
+				return
+			}
+		} else if comment.Type == issues_model.CommentTypeAssignees || comment.Type == issues_model.CommentTypeReviewRequest {
+			if err = comment.LoadAssigneeUserAndTeam(ctx); err != nil {
+				ctx.ServerError("LoadAssigneeUserAndTeam", err)
+				return
+			}
+		} else if comment.Type == issues_model.CommentTypeRemoveDependency || comment.Type == issues_model.CommentTypeAddDependency {
+			if err = comment.LoadDepIssueDetails(ctx); err != nil {
+				if !issues_model.IsErrIssueNotExist(err) {
+					ctx.ServerError("LoadDepIssueDetails", err)
+					return
+				}
+			}
+		} else if comment.Type.HasContentSupport() {
+			comment.RenderedContent, err = markdown.RenderString(&markup.RenderContext{
+				Links: markup.Links{
+					Base: ctx.Repo.RepoLink,
+				},
+				Metas:   ctx.Repo.Repository.ComposeMetas(ctx),
+				GitRepo: ctx.Repo.GitRepo,
+				Repo:    ctx.Repo.Repository,
+				Ctx:     ctx,
+			}, comment.Content)
+			if err != nil {
+				ctx.ServerError("RenderString", err)
+				return
+			}
+			if err = comment.LoadReview(ctx); err != nil && !issues_model.IsErrReviewNotExist(err) {
+				ctx.ServerError("LoadReview", err)
+				return
+			}
+			participants = addParticipant(comment.Poster, participants)
+			if comment.Review == nil {
+				continue
+			}
+			if err = comment.Review.LoadAttributes(ctx); err != nil {
+				if !user_model.IsErrUserNotExist(err) {
+					ctx.ServerError("Review.LoadAttributes", err)
+					return
+				}
+				comment.Review.Reviewer = user_model.NewGhostUser()
+			}
+			if err = comment.Review.LoadCodeComments(ctx); err != nil {
+				ctx.ServerError("Review.LoadCodeComments", err)
+				return
+			}
+			for _, codeComments := range comment.Review.CodeComments {
+				for _, lineComments := range codeComments {
+					for _, c := range lineComments {
+						// Check tag.
+						role, ok = marked[c.PosterID]
+						if ok {
+							c.ShowRole = role
+							continue
+						}
+
+						c.ShowRole, err = roleDescriptor(ctx, repo, c.Poster, issue, c.HasOriginalAuthor())
+						if err != nil {
+							ctx.ServerError("roleDescriptor", err)
+							return
+						}
+						marked[c.PosterID] = c.ShowRole
+						participants = addParticipant(c.Poster, participants)
+					}
+				}
+			}
+			if err = comment.LoadResolveDoer(ctx); err != nil {
+				ctx.ServerError("LoadResolveDoer", err)
+				return
+			}
+		} else if comment.Type == issues_model.CommentTypePullRequestPush {
+			participants = addParticipant(comment.Poster, participants)
+			if err = comment.LoadPushCommits(ctx); err != nil {
+				ctx.ServerError("LoadPushCommits", err)
+				return
+			}
+			if !ctx.Repo.CanRead(unit.TypeActions) {
+				for _, commit := range comment.Commits {
+					commit.Status.HideActionsURL(ctx)
+					git_model.CommitStatusesHideActionsURL(ctx, commit.Statuses)
+				}
+			}
+		} else if comment.Type == issues_model.CommentTypeAddTimeManual ||
+			comment.Type == issues_model.CommentTypeStopTracking ||
+			comment.Type == issues_model.CommentTypeDeleteTimeManual {
+			// drop error since times could be pruned from DB..
+			_ = comment.LoadTime(ctx)
+			if comment.Content != "" {
+				// Content before v1.21 did store the formatted string instead of seconds,
+				// so "|" is used as delimiter to mark the new format
+				if comment.Content[0] != '|' {
+					// handle old time comments that have formatted text stored
+					comment.RenderedContent = templates.SanitizeHTML(comment.Content)
+					comment.Content = ""
+				} else {
+					// else it's just a duration in seconds to pass on to the frontend
+					comment.Content = comment.Content[1:]
+				}
+			}
+		}
+
+		if comment.Type == issues_model.CommentTypeClose || comment.Type == issues_model.CommentTypeMergePull {
+			// record ID of the latest closed/merged comment.
+			// if PR is closed, the comments whose type is CommentTypePullRequestPush(29) after latestCloseCommentID won't be rendered.
+			latestCloseCommentID = comment.ID
+		}
+	}
+
+	ctx.Data["LatestCloseCommentID"] = latestCloseCommentID
+
+	// Combine multiple label assignments into a single comment
+	combineLabelComments(issue)
+
+	getBranchData(ctx, issue)
+	if issue.IsPull {
+		pull := issue.PullRequest
+		pull.Issue = issue
+		canDelete := false
+		allowMerge := false
+		canWriteToHeadRepo := false
+
+		if ctx.IsSigned {
+			if err := pull.LoadHeadRepo(ctx); err != nil {
+				log.Error("LoadHeadRepo: %v", err)
+			} else if pull.HeadRepo != nil {
+				perm, err := access_model.GetUserRepoPermission(ctx, pull.HeadRepo, ctx.Doer)
+				if err != nil {
+					ctx.ServerError("GetUserRepoPermission", err)
+					return
+				}
+				if perm.CanWrite(unit.TypeCode) {
+					// Check if branch is not protected
+					if pull.HeadBranch != pull.HeadRepo.DefaultBranch {
+						if protected, err := git_model.IsBranchProtected(ctx, pull.HeadRepo.ID, pull.HeadBranch); err != nil {
+							log.Error("IsProtectedBranch: %v", err)
+						} else if !protected {
+							canDelete = true
+							ctx.Data["DeleteBranchLink"] = issue.Link() + "/cleanup"
+						}
+					}
+					canWriteToHeadRepo = true
+				}
+			}
+
+			if err := pull.LoadBaseRepo(ctx); err != nil {
+				log.Error("LoadBaseRepo: %v", err)
+			}
+			perm, err := access_model.GetUserRepoPermission(ctx, pull.BaseRepo, ctx.Doer)
+			if err != nil {
+				ctx.ServerError("GetUserRepoPermission", err)
+				return
+			}
+			if !canWriteToHeadRepo { // maintainers maybe allowed to push to head repo even if they can't write to it
+				canWriteToHeadRepo = pull.AllowMaintainerEdit && perm.CanWrite(unit.TypeCode)
+			}
+			allowMerge, err = pull_service.IsUserAllowedToMerge(ctx, pull, perm, ctx.Doer)
+			if err != nil {
+				ctx.ServerError("IsUserAllowedToMerge", err)
+				return
+			}
+
+			if ctx.Data["CanMarkConversation"], err = issues_model.CanMarkConversation(ctx, issue, ctx.Doer); err != nil {
+				ctx.ServerError("CanMarkConversation", err)
+				return
+			}
+		}
+
+		ctx.Data["CanWriteToHeadRepo"] = canWriteToHeadRepo
+		ctx.Data["ShowMergeInstructions"] = canWriteToHeadRepo
+		ctx.Data["AllowMerge"] = allowMerge
+
+		prUnit, err := repo.GetUnit(ctx, unit.TypePullRequests)
+		if err != nil {
+			ctx.ServerError("GetUnit", err)
+			return
+		}
+		prConfig := prUnit.PullRequestsConfig()
+
+		ctx.Data["AutodetectManualMerge"] = prConfig.AutodetectManualMerge
+
+		var mergeStyle repo_model.MergeStyle
+		// Check correct values and select default
+		if ms, ok := ctx.Data["MergeStyle"].(repo_model.MergeStyle); !ok ||
+			!prConfig.IsMergeStyleAllowed(ms) {
+			defaultMergeStyle := prConfig.GetDefaultMergeStyle()
+			if prConfig.IsMergeStyleAllowed(defaultMergeStyle) && !ok {
+				mergeStyle = defaultMergeStyle
+			} else if prConfig.AllowMerge {
+				mergeStyle = repo_model.MergeStyleMerge
+			} else if prConfig.AllowRebase {
+				mergeStyle = repo_model.MergeStyleRebase
+			} else if prConfig.AllowRebaseMerge {
+				mergeStyle = repo_model.MergeStyleRebaseMerge
+			} else if prConfig.AllowSquash {
+				mergeStyle = repo_model.MergeStyleSquash
+			} else if prConfig.AllowFastForwardOnly {
+				mergeStyle = repo_model.MergeStyleFastForwardOnly
+			} else if prConfig.AllowManualMerge {
+				mergeStyle = repo_model.MergeStyleManuallyMerged
+			}
+		}
+
+		ctx.Data["MergeStyle"] = mergeStyle
+
+		defaultMergeMessage, defaultMergeBody, err := pull_service.GetDefaultMergeMessage(ctx, ctx.Repo.GitRepo, pull, mergeStyle)
+		if err != nil {
+			ctx.ServerError("GetDefaultMergeMessage", err)
+			return
+		}
+		ctx.Data["DefaultMergeMessage"] = defaultMergeMessage
+		ctx.Data["DefaultMergeBody"] = defaultMergeBody
+
+		defaultSquashMergeMessage, defaultSquashMergeBody, err := pull_service.GetDefaultMergeMessage(ctx, ctx.Repo.GitRepo, pull, repo_model.MergeStyleSquash)
+		if err != nil {
+			ctx.ServerError("GetDefaultSquashMergeMessage", err)
+			return
+		}
+		ctx.Data["DefaultSquashMergeMessage"] = defaultSquashMergeMessage
+		ctx.Data["DefaultSquashMergeBody"] = defaultSquashMergeBody
+
+		pb, err := git_model.GetFirstMatchProtectedBranchRule(ctx, pull.BaseRepoID, pull.BaseBranch)
+		if err != nil {
+			ctx.ServerError("LoadProtectedBranch", err)
+			return
+		}
+
+		if pb != nil {
+			pb.Repo = pull.BaseRepo
+			ctx.Data["ProtectedBranch"] = pb
+			ctx.Data["IsBlockedByApprovals"] = !issues_model.HasEnoughApprovals(ctx, pb, pull)
+			ctx.Data["IsBlockedByRejection"] = issues_model.MergeBlockedByRejectedReview(ctx, pb, pull)
+			ctx.Data["IsBlockedByOfficialReviewRequests"] = issues_model.MergeBlockedByOfficialReviewRequests(ctx, pb, pull)
+			ctx.Data["IsBlockedByOutdatedBranch"] = issues_model.MergeBlockedByOutdatedBranch(pb, pull)
+			ctx.Data["GrantedApprovals"] = issues_model.GetGrantedApprovalsCount(ctx, pb, pull)
+			ctx.Data["RequireSigned"] = pb.RequireSignedCommits
+			ctx.Data["ChangedProtectedFiles"] = pull.ChangedProtectedFiles
+			ctx.Data["IsBlockedByChangedProtectedFiles"] = len(pull.ChangedProtectedFiles) != 0
+			ctx.Data["ChangedProtectedFilesNum"] = len(pull.ChangedProtectedFiles)
+			ctx.Data["RequireApprovalsWhitelist"] = pb.EnableApprovalsWhitelist
+		}
+		ctx.Data["WillSign"] = false
+		if ctx.Doer != nil {
+			sign, key, _, err := asymkey_service.SignMerge(ctx, pull, ctx.Doer, pull.BaseRepo.RepoPath(), pull.BaseBranch, pull.GetGitRefName())
+			ctx.Data["WillSign"] = sign
+			ctx.Data["SigningKey"] = key
+			if err != nil {
+				if asymkey_service.IsErrWontSign(err) {
+					ctx.Data["WontSignReason"] = err.(*asymkey_service.ErrWontSign).Reason
+				} else {
+					ctx.Data["WontSignReason"] = "error"
+					log.Error("Error whilst checking if could sign pr %d in repo %s. Error: %v", pull.ID, pull.BaseRepo.FullName(), err)
+				}
+			}
+		} else {
+			ctx.Data["WontSignReason"] = "not_signed_in"
+		}
+
+		isPullBranchDeletable := canDelete &&
+			pull.HeadRepo != nil &&
+			git.IsBranchExist(ctx, pull.HeadRepo.RepoPath(), pull.HeadBranch) &&
+			(!pull.HasMerged || ctx.Data["HeadBranchCommitID"] == ctx.Data["PullHeadCommitID"])
+
+		if isPullBranchDeletable && pull.HasMerged {
+			exist, err := issues_model.HasUnmergedPullRequestsByHeadInfo(ctx, pull.HeadRepoID, pull.HeadBranch)
+			if err != nil {
+				ctx.ServerError("HasUnmergedPullRequestsByHeadInfo", err)
+				return
+			}
+
+			isPullBranchDeletable = !exist
+		}
+		ctx.Data["IsPullBranchDeletable"] = isPullBranchDeletable
+
+		stillCanManualMerge := func() bool {
+			if pull.HasMerged || issue.IsClosed || !ctx.IsSigned {
+				return false
+			}
+			if pull.CanAutoMerge() || pull.IsWorkInProgress(ctx) || pull.IsChecking() {
+				return false
+			}
+			if allowMerge && prConfig.AllowManualMerge {
+				return true
+			}
+
+			return false
+		}
+
+		ctx.Data["StillCanManualMerge"] = stillCanManualMerge()
+
+		// Check if there is a pending pr merge
+		ctx.Data["HasPendingPullRequestMerge"], ctx.Data["PendingPullRequestMerge"], err = pull_model.GetScheduledMergeByPullID(ctx, pull.ID)
+		if err != nil {
+			ctx.ServerError("GetScheduledMergeByPullID", err)
+			return
+		}
+	}
+
+	// Get Dependencies
+	blockedBy, err := issue.BlockedByDependencies(ctx, db.ListOptions{})
+	if err != nil {
+		ctx.ServerError("BlockedByDependencies", err)
+		return
+	}
+	ctx.Data["BlockedByDependencies"], ctx.Data["BlockedByDependenciesNotPermitted"] = checkBlockedByIssues(ctx, blockedBy)
+	if ctx.Written() {
+		return
+	}
+
+	blocking, err := issue.BlockingDependencies(ctx)
+	if err != nil {
+		ctx.ServerError("BlockingDependencies", err)
+		return
+	}
+
+	ctx.Data["BlockingDependencies"], ctx.Data["BlockingDependenciesNotPermitted"] = checkBlockedByIssues(ctx, blocking)
+	if ctx.Written() {
+		return
+	}
+
+	var pinAllowed bool
+	if !issue.IsPinned() {
+		pinAllowed, err = issues_model.IsNewPinAllowed(ctx, issue.RepoID, issue.IsPull)
+		if err != nil {
+			ctx.ServerError("IsNewPinAllowed", err)
+			return
+		}
+	} else {
+		pinAllowed = true
+	}
+
+	ctx.Data["Participants"] = participants
+	ctx.Data["NumParticipants"] = len(participants)
+	ctx.Data["Issue"] = issue
+	ctx.Data["Reference"] = issue.Ref
+	ctx.Data["SignInLink"] = setting.AppSubURL + "/user/login?redirect_to=" + url.QueryEscape(ctx.Data["Link"].(string))
+	ctx.Data["IsIssuePoster"] = ctx.IsSigned && issue.IsPoster(ctx.Doer.ID)
+	ctx.Data["HasIssuesOrPullsWritePermission"] = ctx.Repo.CanWriteIssuesOrPulls(issue.IsPull)
+	ctx.Data["HasProjectsWritePermission"] = ctx.Repo.CanWrite(unit.TypeProjects)
+	ctx.Data["IsRepoAdmin"] = ctx.IsSigned && (ctx.Repo.IsAdmin() || ctx.Doer.IsAdmin)
+	ctx.Data["LockReasons"] = setting.Repository.Issue.LockReasons
+	ctx.Data["RefEndName"] = git.RefName(issue.Ref).ShortName()
+	ctx.Data["NewPinAllowed"] = pinAllowed
+	ctx.Data["PinEnabled"] = setting.Repository.Issue.MaxPinned != 0
+
+	var hiddenCommentTypes *big.Int
+	if ctx.IsSigned {
+		val, err := user_model.GetUserSetting(ctx, ctx.Doer.ID, user_model.SettingsKeyHiddenCommentTypes)
+		if err != nil {
+			ctx.ServerError("GetUserSetting", err)
+			return
+		}
+		hiddenCommentTypes, _ = new(big.Int).SetString(val, 10) // we can safely ignore the failed conversion here
+	}
+	ctx.Data["ShouldShowCommentType"] = func(commentType issues_model.CommentType) bool {
+		return hiddenCommentTypes == nil || hiddenCommentTypes.Bit(int(commentType)) == 0
+	}
+	// For sidebar
+	PrepareBranchList(ctx)
+
+	if ctx.Written() {
+		return
+	}
+
+	tags, err := repo_model.GetTagNamesByRepoID(ctx, ctx.Repo.Repository.ID)
+	if err != nil {
+		ctx.ServerError("GetTagNamesByRepoID", err)
+		return
+	}
+	ctx.Data["Tags"] = tags
+
+	ctx.Data["CanBlockUser"] = func(blocker, blockee *user_model.User) bool {
+		return user_service.CanBlockUser(ctx, ctx.Doer, blocker, blockee)
+	}
+
+	ctx.HTML(http.StatusOK, tplIssueView)
+}
--- a/routers/web/repo/pull_review.go
+++ b/routers/web/repo/pull_review.go
@ -9,6 +9,7 @@ import (
 	"net/http"

 	issues_model "code.gitea.io/gitea/models/issues"
+	"code.gitea.io/gitea/models/organization"
 	pull_model "code.gitea.io/gitea/models/pull"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/base"
@ -19,6 +20,7 @@ import (
 	"code.gitea.io/gitea/services/context"
 	"code.gitea.io/gitea/services/context/upload"
 	"code.gitea.io/gitea/services/forms"
+	issue_service "code.gitea.io/gitea/services/issue"
 	pull_service "code.gitea.io/gitea/services/pull"
 	user_service "code.gitea.io/gitea/services/user"
 )
@ -332,3 +334,118 @@ func UpdateViewedFiles(ctx *context.Context) {
 		ctx.ServerError("UpdateReview", err)
 	}
 }
+
+// UpdatePullReviewRequest add or remove review request
+func UpdatePullReviewRequest(ctx *context.Context) {
+	issues := getActionIssues(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	reviewID := ctx.FormInt64("id")
+	action := ctx.FormString("action")
+
+	// TODO: Not support 'clear' now
+	if action != "attach" && action != "detach" {
+		ctx.Status(http.StatusForbidden)
+		return
+	}
+
+	for _, issue := range issues {
+		if err := issue.LoadRepo(ctx); err != nil {
+			ctx.ServerError("issue.LoadRepo", err)
+			return
+		}
+
+		if !issue.IsPull {
+			log.Warn(
+				"UpdatePullReviewRequest: refusing to add review request for non-PR issue %-v#%d",
+				issue.Repo, issue.Index,
+			)
+			ctx.Status(http.StatusForbidden)
+			return
+		}
+		if reviewID < 0 {
+			// negative reviewIDs represent team requests
+			if err := issue.Repo.LoadOwner(ctx); err != nil {
+				ctx.ServerError("issue.Repo.LoadOwner", err)
+				return
+			}
+
+			if !issue.Repo.Owner.IsOrganization() {
+				log.Warn(
+					"UpdatePullReviewRequest: refusing to add team review request for %s#%d owned by non organization UID[%d]",
+					issue.Repo.FullName(), issue.Index, issue.Repo.ID,
+				)
+				ctx.Status(http.StatusForbidden)
+				return
+			}
+
+			team, err := organization.GetTeamByID(ctx, -reviewID)
+			if err != nil {
+				ctx.ServerError("GetTeamByID", err)
+				return
+			}
+
+			if team.OrgID != issue.Repo.OwnerID {
+				log.Warn(
+					"UpdatePullReviewRequest: refusing to add team review request for UID[%d] team %s to %s#%d owned by UID[%d]",
+					team.OrgID, team.Name, issue.Repo.FullName(), issue.Index, issue.Repo.ID)
+				ctx.Status(http.StatusForbidden)
+				return
+			}
+
+			_, err = issue_service.TeamReviewRequest(ctx, issue, ctx.Doer, team, action == "attach")
+			if err != nil {
+				if issues_model.IsErrNotValidReviewRequest(err) {
+					log.Warn(
+						"UpdatePullReviewRequest: refusing to add invalid team review request for UID[%d] team %s to %s#%d owned by UID[%d]: Error: %v",
+						team.OrgID, team.Name, issue.Repo.FullName(), issue.Index, issue.Repo.ID,
+						err,
+					)
+					ctx.Status(http.StatusForbidden)
+					return
+				}
+				ctx.ServerError("TeamReviewRequest", err)
+				return
+			}
+			continue
+		}
+
+		reviewer, err := user_model.GetUserByID(ctx, reviewID)
+		if err != nil {
+			if user_model.IsErrUserNotExist(err) {
+				log.Warn(
+					"UpdatePullReviewRequest: requested reviewer [%d] for %-v to %-v#%d is not exist: Error: %v",
+					reviewID, issue.Repo, issue.Index,
+					err,
+				)
+				ctx.Status(http.StatusForbidden)
+				return
+			}
+			ctx.ServerError("GetUserByID", err)
+			return
+		}
+
+		_, err = issue_service.ReviewRequest(ctx, issue, ctx.Doer, &ctx.Repo.Permission, reviewer, action == "attach")
+		if err != nil {
+			if issues_model.IsErrNotValidReviewRequest(err) {
+				log.Warn(
+					"UpdatePullReviewRequest: refusing to add invalid review request for %-v to %-v#%d: Error: %v",
+					reviewer, issue.Repo, issue.Index,
+					err,
+				)
+				ctx.Status(http.StatusForbidden)
+				return
+			}
+			if issues_model.IsErrReviewRequestOnClosedPR(err) {
+				ctx.Status(http.StatusForbidden)
+				return
+			}
+			ctx.ServerError("ReviewRequest", err)
+			return
+		}
+	}
+
+	ctx.JSONOK()
+}