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// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package repo
import (
"bytes"
"html"
"net/http"
"strings"
"code.gitea.io/gitea/models/avatars"
issues_model "code.gitea.io/gitea/models/issues"
"code.gitea.io/gitea/models/unit"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/templates"
"code.gitea.io/gitea/modules/timeutil"
"github.com/sergi/go-diff/diffmatchpatch"
)
// GetContentHistoryOverview get overview
func GetContentHistoryOverview(ctx *context.Context) {
issue := GetActionIssue(ctx)
if ctx.Written() {
return
}
editedHistoryCountMap, _ := issues_model.QueryIssueContentHistoryEditedCountMap(ctx, issue.ID)
ctx.JSON(http.StatusOK, map[string]any{
"i18n": map[string]any{
"textEdited": ctx.Tr("repo.issues.content_history.edited"),
"textDeleteFromHistory": ctx.Tr("repo.issues.content_history.delete_from_history"),
"textDeleteFromHistoryConfirm": ctx.Tr("repo.issues.content_history.delete_from_history_confirm"),
"textOptions": ctx.Tr("repo.issues.content_history.options"),
},
"editedHistoryCountMap": editedHistoryCountMap,
})
}
// GetContentHistoryList get list
func GetContentHistoryList(ctx *context.Context) {
issue := GetActionIssue(ctx)
if ctx.Written() {
return
}
commentID := ctx.FormInt64("comment_id")
items, _ := issues_model.FetchIssueContentHistoryList(ctx, issue.ID, commentID)
// render history list to HTML for frontend dropdown items: (name, value)
// name is HTML of "avatar + userName + userAction + timeSince"
// value is historyId
var results []map[string]any
for _, item := range items {
var actionText string
if item.IsDeleted {
actionTextDeleted := ctx.Locale.Tr("repo.issues.content_history.deleted")
actionText = "<i data-history-is-deleted='1'>" + actionTextDeleted + "</i>"
} else if item.IsFirstCreated {
actionText = ctx.Locale.Tr("repo.issues.content_history.created")
} else {
actionText = ctx.Locale.Tr("repo.issues.content_history.edited")
}
username := item.UserName
if setting.UI.DefaultShowFullName && strings.TrimSpace(item.UserFullName) != "" {
username = strings.TrimSpace(item.UserFullName)
}
src := html.EscapeString(item.UserAvatarLink)
class := avatars.DefaultAvatarClass + " gt-mr-3"
name := html.EscapeString(username)
avatarHTML := string(templates.AvatarHTML(src, 28, class, username))
timeSinceText := string(timeutil.TimeSinceUnix(item.EditedUnix, ctx.Locale))
results = append(results, map[string]any{
"name": avatarHTML + "<strong>" + name + "</strong> " + actionText + " " + timeSinceText,
"value": item.HistoryID,
})
}
ctx.JSON(http.StatusOK, map[string]any{
"results": results,
})
}
// canSoftDeleteContentHistory checks whether current user can soft-delete a history revision
// Admins or owners can always delete history revisions. Normal users can only delete own history revisions.
func canSoftDeleteContentHistory(ctx *context.Context, issue *issues_model.Issue, comment *issues_model.Comment,
history *issues_model.ContentHistory,
) bool {
canSoftDelete := false
if ctx.Repo.IsOwner() {
canSoftDelete = true
} else if ctx.Repo.CanWrite(unit.TypeIssues) {
if comment == nil {
// the issue poster or the history poster can soft-delete
canSoftDelete = ctx.Doer.ID == issue.PosterID || ctx.Doer.ID == history.PosterID
canSoftDelete = canSoftDelete && (history.IssueID == issue.ID)
} else {
// the comment poster or the history poster can soft-delete
canSoftDelete = ctx.Doer.ID == comment.PosterID || ctx.Doer.ID == history.PosterID
canSoftDelete = canSoftDelete && (history.IssueID == issue.ID)
canSoftDelete = canSoftDelete && (history.CommentID == comment.ID)
}
}
return canSoftDelete
}
// GetContentHistoryDetail get detail
func GetContentHistoryDetail(ctx *context.Context) {
issue := GetActionIssue(ctx)
if ctx.Written() {
return
}
historyID := ctx.FormInt64("history_id")
history, prevHistory, err := issues_model.GetIssueContentHistoryAndPrev(ctx, issue.ID, historyID)
if err != nil {
ctx.JSON(http.StatusNotFound, map[string]any{
"message": "Can not find the content history",
})
return
}
// get the related comment if this history revision is for a comment, otherwise the history revision is for an issue.
var comment *issues_model.Comment
if history.CommentID != 0 {
var err error
if comment, err = issues_model.GetCommentByID(ctx, history.CommentID); err != nil {
log.Error("can not get comment for issue content history %v. err=%v", historyID, err)
return
}
}
// get the previous history revision (if exists)
var prevHistoryID int64
var prevHistoryContentText string
if prevHistory != nil {
prevHistoryID = prevHistory.ID
prevHistoryContentText = prevHistory.ContentText
}
// compare the current history revision with the previous one
dmp := diffmatchpatch.New()
// `checklines=false` makes better diff result
diff := dmp.DiffMain(prevHistoryContentText, history.ContentText, false)
diff = dmp.DiffCleanupEfficiency(diff)
// use chroma to render the diff html
diffHTMLBuf := bytes.Buffer{}
diffHTMLBuf.WriteString("<pre class='chroma' style='tab-size: 4'>")
for _, it := range diff {
if it.Type == diffmatchpatch.DiffInsert {
diffHTMLBuf.WriteString("<span class='gi'>")
diffHTMLBuf.WriteString(html.EscapeString(it.Text))
diffHTMLBuf.WriteString("</span>")
} else if it.Type == diffmatchpatch.DiffDelete {
diffHTMLBuf.WriteString("<span class='gd'>")
diffHTMLBuf.WriteString(html.EscapeString(it.Text))
diffHTMLBuf.WriteString("</span>")
} else {
diffHTMLBuf.WriteString(html.EscapeString(it.Text))
}
}
diffHTMLBuf.WriteString("</pre>")
ctx.JSON(http.StatusOK, map[string]any{
"canSoftDelete": canSoftDeleteContentHistory(ctx, issue, comment, history),
"historyId": historyID,
"prevHistoryId": prevHistoryID,
"diffHtml": diffHTMLBuf.String(),
})
}
// SoftDeleteContentHistory soft delete
func SoftDeleteContentHistory(ctx *context.Context) {
issue := GetActionIssue(ctx)
if ctx.Written() {
return
}
commentID := ctx.FormInt64("comment_id")
historyID := ctx.FormInt64("history_id")
var comment *issues_model.Comment
var history *issues_model.ContentHistory
var err error
if history, err = issues_model.GetIssueContentHistoryByID(ctx, historyID); err != nil {
log.Error("can not get issue content history %v. err=%v", historyID, err)
return
}
if history.IssueID != issue.ID {
ctx.NotFound("CompareRepoID", issues_model.ErrCommentNotExist{})
return
}
if commentID != 0 {
if history.CommentID != commentID {
ctx.NotFound("CompareCommentID", issues_model.ErrCommentNotExist{})
return
}
if comment, err = issues_model.GetCommentByID(ctx, commentID); err != nil {
log.Error("can not get comment for issue content history %v. err=%v", historyID, err)
return
}
if comment.IssueID != issue.ID {
ctx.NotFound("CompareIssueID", issues_model.ErrCommentNotExist{})
return
}
}
canSoftDelete := canSoftDeleteContentHistory(ctx, issue, comment, history)
if !canSoftDelete {
ctx.JSON(http.StatusForbidden, map[string]any{
"message": "Can not delete the content history",
})
return
}
err = issues_model.SoftDeleteIssueContentHistory(ctx, historyID)
log.Debug("soft delete issue content history. issue=%d, comment=%d, history=%d", issue.ID, commentID, historyID)
ctx.JSON(http.StatusOK, map[string]any{
"ok": err == nil,
})
}
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