Auto merge pull requests when all checks succeeded via WebUI

routers/web/repo/pull.go

@@ -19,6 +19,7 @@ import (
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/organization"
+	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"
@@ -35,6 +36,7 @@ import (
 	"code.gitea.io/gitea/modules/web/middleware"
 	"code.gitea.io/gitea/routers/utils"
 	asymkey_service "code.gitea.io/gitea/services/asymkey"
+	"code.gitea.io/gitea/services/automerge"
 	"code.gitea.io/gitea/services/forms"
 	"code.gitea.io/gitea/services/gitdiff"
 	pull_service "code.gitea.io/gitea/services/pull"
@@ -943,6 +945,24 @@ func MergePullRequest(ctx *context.Context) {
 		return
 	}
 
+	if form.MergeWhenChecksSucceed {
+		scheduled, err := automerge.ScheduleAutoMerge(ctx, ctx.Doer, pr, repo_model.MergeStyle(form.Do), form.MergeTitleField)
+		if err != nil {
+			if pull_model.IsErrAlreadyScheduledToAutoMerge(err) {
+				ctx.Flash.Success(ctx.Tr("repo.pulls.merge_on_status_success_already_scheduled"))
+				ctx.Redirect(fmt.Sprintf("%s/pulls/%d", ctx.Repo.RepoLink, pr.Index))
+				return
+			}
+			ctx.ServerError("ScheduleAutoMerge", err)
+			return
+		} else if scheduled {
+			// nothing more to do ...
+			ctx.Flash.Success(ctx.Tr("repo.pulls.merge_on_status_success"))
+			ctx.Redirect(fmt.Sprintf("%s/pulls/%d", ctx.Repo.RepoLink, pr.Index))
+			return
+		}
+	}
+
 	if err := pull_service.Merge(pr, ctx.Doer, ctx.Repo.GitRepo, repo_model.MergeStyle(form.Do), form.HeadCommitID, form.MergeTitleField); err != nil {
 		if models.IsErrInvalidMergeStyle(err) {
 			ctx.Flash.Error(ctx.Tr("repo.pulls.invalid_merge_option"))
@@ -1047,6 +1067,26 @@ func MergePullRequest(ctx *context.Context) {
 	ctx.Redirect(issue.Link())
 }
 
+// CancelAutoMergePullRequest cancels a scheduled pr
+func CancelAutoMergePullRequest(ctx *context.Context) {
+	issue := checkPullInfo(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	if err := pull_model.RemoveScheduledAutoMerge(ctx, ctx.Doer, issue.PullRequest.ID, true); err != nil {
+		if models.IsErrNotExist(err) {
+			ctx.Flash.Error(ctx.Tr("repo.pulls.pull_request_not_scheduled"))
+			ctx.Redirect(fmt.Sprintf("%s/pulls/%d", ctx.Repo.RepoLink, issue.Index))
+			return
+		}
+		ctx.ServerError("RemoveScheduledAutoMerge", err)
+		return
+	}
+	ctx.Flash.Success(ctx.Tr("repo.pulls.pull_request_schedule_canceled"))
+	ctx.Redirect(fmt.Sprintf("%s/pulls/%d", ctx.Repo.RepoLink, issue.Index))
+}
+
 func stopTimerIfAvailable(user *user_model.User, issue *models.Issue) error {
 	if models.StopwatchExists(user.ID, issue.ID) {
 		if err := models.CreateOrStopIssueStopwatch(user, issue); err != nil {

routers/web/web.go

@@ -1108,6 +1108,7 @@ func RegisterRoutes(m *web.Route) {
 			m.Get(".patch", repo.DownloadPullPatch)
 			m.Get("/commits", context.RepoRef(), repo.ViewPullCommits)
 			m.Post("/merge", context.RepoMustNotBeArchived(), bindIgnErr(forms.MergePullRequestForm{}), repo.MergePullRequest)
+			m.Post("/cancel_auto_merge", context.RepoMustNotBeArchived(), repo.CancelAutoMergePullRequest)
 			m.Post("/update", repo.UpdatePullRequest)
 			m.Post("/set_allow_maintainer_edit", bindIgnErr(forms.UpdateAllowEditsForm{}), repo.SetAllowEdits)
 			m.Post("/cleanup", context.RepoMustNotBeArchived(), context.RepoRef(), repo.CleanUpPullRequest)