Issue due date (#3794)

* Started adding deadline to ui

* Implemented basic issue due date managing

* Improved UI for due date managing

* Added at least write access to the repo in order to modify issue due dates

* Ui improvements

* Added issue comments creation when adding/modifying/removing a due date

* Show due date in issue list

* Added api support for issue due dates

* Fixed lint suggestions

* Added deadline to sdk

* Updated css

* Added support for adding/modifiying deadlines for pull requests via api

* Fixed comments not created when updating or removing a deadline

* update sdk (will do properly once go-gitea/go-sdk#103 is merged)

* enhanced updateIssueDeadline

* Removed unnessecary Issue.DeadlineString

* UI improvements

* Small improvments to comment creation
+ ui & validation improvements

* Check if an issue is overdue is now a seperate function

* Updated go-sdk with govendor as it was merged

* Simplified isOverdue method

* removed unessecary deadline to 0 set

* Update swagger definitions

* Added missing return

* Added an explanary comment

* Improved updateIssueDeadline method so it'll only update `deadline_unix`

* Small changes and improvements
* no need to explicitly load the issue when updating a deadline, just use whats already there
* small optimisations

* Added check if a deadline was modified before updating it

* Moved comment creating logic into its own function

* Code cleanup for creating deadline comment

* locale improvement

* When modifying a deadline, the old deadline is saved with the comment

* small improvments to xorm session handling when updating an issue deadline
+ style nitpicks

* style nitpicks

* Moved checking for if the user has write acces to middleware

1 files changed, 48 insertions, 0 deletions

diff --git a/routers/repo/issue.go b/routers/repo/issue.go
index 51516b828c..c7aef25594 100644
--- a/routers/repo/issue.go
+++ b/routers/repo/issue.go
@@ -1467,3 +1467,51 @@ func ChangeCommentReaction(ctx *context.Context, form auth.ReactionForm) {
 		"html": html,
 	})
 }
+
+// UpdateDeadline adds or updates a deadline
+func UpdateDeadline(ctx *context.Context, form auth.DeadlineForm) {
+	issue := GetActionIssue(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	if ctx.HasError() {
+		ctx.ServerError("ChangeIssueDeadline", errors.New(ctx.GetErrMsg()))
+		return
+	}
+
+	// Make unix of deadline string
+	deadline, err := time.ParseInLocation("2006-01-02", form.DateString, time.Local)
+	if err != nil {
+		ctx.Flash.Error(ctx.Tr("repo.issues.invalid_due_date_format"))
+		ctx.Redirect(fmt.Sprintf("%s/issues/%d", ctx.Repo.RepoLink, issue.Index))
+		return
+	}
+
+	if err = models.UpdateIssueDeadline(issue, util.TimeStamp(deadline.Unix()), ctx.User); err != nil {
+		ctx.Flash.Error(ctx.Tr("repo.issues.error_modifying_due_date"))
+	}
+
+	ctx.Redirect(fmt.Sprintf("%s/issues/%d", ctx.Repo.RepoLink, issue.Index))
+	return
+}
+
+// RemoveDeadline removes a deadline
+func RemoveDeadline(ctx *context.Context) {
+	issue := GetActionIssue(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	if ctx.HasError() {
+		ctx.ServerError("RemoveIssueDeadline", errors.New(ctx.GetErrMsg()))
+		return
+	}
+
+	if err := models.UpdateIssueDeadline(issue, 0, ctx.User); err != nil {
+		ctx.Flash.Error(ctx.Tr("repo.issues.error_removing_due_date"))
+	}
+
+	ctx.Redirect(fmt.Sprintf("%s/issues/%d", ctx.Repo.RepoLink, issue.Index))
+	return
+}