Add an updated_at field to the API call for issue's comment edition

The update date is used as the comment update date, and is applied to
the issue as an update date.

models/issues/comment.go

@@ -1106,9 +1106,12 @@ func UpdateComment(c *Comment, doer *user_model.User) error {
 		return err
 	}
 	defer committer.Close()
-	sess := db.GetEngine(ctx)
+	sess := db.GetEngine(ctx).ID(c.ID).AllCols()
-
+	if c.Issue.NoAutoTime {
-	if _, err := sess.ID(c.ID).AllCols().Update(c); err != nil {
+		c.UpdatedUnix = c.Issue.UpdatedUnix
+		sess = sess.NoAutoTime()
+	}
+	if _, err := sess.Update(c); err != nil {
 		return err
 	}
 	if err := c.LoadIssue(ctx); err != nil {

modules/structs/issue_comment.go

@@ -36,6 +36,8 @@ type CreateIssueCommentOption struct {
 type EditIssueCommentOption struct {
 	// required: true
 	Body string `json:"body" binding:"Required"`
+	// swagger:strfmt date-time
+	Updated *time.Time `json:"updated_at"`
 }
 
 // TimelineComment represents a timeline comment (comment of any type) on a commit or issue

routers/api/v1/repo/issue_comment.go

@@ -560,6 +560,17 @@ func editIssueComment(ctx *context.APIContext, form api.EditIssueCommentOption)
 		return
 	}
 
+	err = comment.LoadIssue(ctx)
+	if err != nil {
+		ctx.Error(http.StatusInternalServerError, "LoadIssue", err)
+		return
+	}
+	err = issue_service.SetIssueUpdateDate(ctx, comment.Issue, form.Updated, ctx.Doer)
+	if err != nil {
+		ctx.Error(http.StatusForbidden, "SetIssueUpdateDate", err)
+		return
+	}
+
 	oldContent := comment.Content
 	comment.Content = form.Body
 	if err := issue_service.UpdateComment(ctx, comment, ctx.Doer, oldContent); err != nil {

services/issue/comments.go

@@ -89,7 +89,11 @@ func UpdateComment(ctx context.Context, c *issues_model.Comment, doer *user_mode
 	}
 
 	if needsContentHistory {
-		err := issues_model.SaveIssueContentHistory(ctx, doer.ID, c.IssueID, c.ID, timeutil.TimeStampNow(), c.Content, false)
+		historyDate := timeutil.TimeStampNow()
+		if c.Issue.NoAutoTime {
+			historyDate = c.Issue.UpdatedUnix
+		}
+		err := issues_model.SaveIssueContentHistory(ctx, doer.ID, c.IssueID, c.ID, historyDate, c.Content, false)
 		if err != nil {
 			return err
 		}

templates/swagger/v1_json.tmpl

@@ -18075,6 +18075,11 @@
         "body": {
           "type": "string",
           "x-go-name": "Body"
+        },
+        "updated_at": {
+          "type": "string",
+          "format": "date-time",
+          "x-go-name": "Updated"
         }
       },
       "x-go-package": "code.gitea.io/gitea/modules/structs"