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

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

modules/structs/issue_comment.go

@@ -28,6 +28,8 @@ type Comment struct {
 type CreateIssueCommentOption struct {
 	// required:true
 	Body string `json:"body" binding:"Required"`
+	// swagger:strfmt date-time
+	Updated *time.Time `json:"updated_at"`
 }
 
 // EditIssueCommentOption options for editing a comment

routers/api/v1/repo/issue_comment.go

@@ -362,6 +362,12 @@ func CreateIssueComment(ctx *context.APIContext) {
 		return
 	}
 
+	err = issue_service.SetIssueUpdateDate(ctx, issue, form.Updated, ctx.Doer)
+	if err != nil {
+		ctx.Error(http.StatusForbidden, "SetIssueUpdateDate", err)
+		return
+	}
+
 	comment, err := issue_service.CreateIssueComment(ctx, ctx.Doer, ctx.Repo.Repository, issue, form.Body, nil)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "CreateIssueComment", err)

templates/swagger/v1_json.tmpl

@@ -17047,6 +17047,11 @@
         "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"