Add `tea pr merge` (#348)

fixes #343

Co-authored-by: Norwin Roosen <git@nroo.de>
Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://gitea.com/gitea/tea/pulls/348
Reviewed-by: 6543 <6543@obermui.de>
Reviewed-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Norwin <noerw@noreply.gitea.io>
Co-committed-by: Norwin <noerw@noreply.gitea.io>

cmd/pulls.go

@@ -43,6 +43,7 @@ var CmdPulls = cli.Command{
 		&pulls.CmdPullsReview,
 		&pulls.CmdPullsApprove,
 		&pulls.CmdPullsReject,
+		&pulls.CmdPullsMerge,
 	},
 }
 

cmd/pulls/merge.go

@@ -0,0 +1,70 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package pulls
+
+import (
+	"fmt"
+
+	"code.gitea.io/sdk/gitea"
+	"code.gitea.io/tea/cmd/flags"
+	"code.gitea.io/tea/modules/context"
+	"code.gitea.io/tea/modules/utils"
+
+	"github.com/urfave/cli/v2"
+)
+
+// CmdPullsMerge merges a PR
+var CmdPullsMerge = cli.Command{
+	Name:        "merge",
+	Aliases:     []string{"m"},
+	Usage:       "Merge a pull request",
+	Description: "Merge a pull request",
+	ArgsUsage:   "<pull index>",
+	Flags: append([]cli.Flag{
+		&cli.StringFlag{
+			Name:    "style",
+			Aliases: []string{"s"},
+			Usage:   "Kind of merge to perform: merge, rebase, squash, rebase-merge",
+			Value:   "merge",
+		},
+		&cli.StringFlag{
+			Name:    "title",
+			Aliases: []string{"t"},
+			Usage:   "Merge commit title",
+		},
+		&cli.StringFlag{
+			Name:    "message",
+			Aliases: []string{"m"},
+			Usage:   "Merge commit message",
+		},
+	}, flags.AllDefaultFlags...),
+	Action: func(cmd *cli.Context) error {
+		ctx := context.InitCommand(cmd)
+		ctx.Ensure(context.CtxRequirement{RemoteRepo: true})
+
+		if ctx.Args().Len() != 1 {
+			return fmt.Errorf("Must specify a PR index")
+		}
+
+		idx, err := utils.ArgToIndex(ctx.Args().First())
+		if err != nil {
+			return err
+		}
+
+		success, _, err := ctx.Login.Client().MergePullRequest(ctx.Owner, ctx.Repo, idx, gitea.MergePullRequestOption{
+			Style:   gitea.MergeStyle(ctx.String("style")),
+			Title:   ctx.String("title"),
+			Message: ctx.String("message"),
+		})
+
+		if err != nil {
+			return err
+		}
+		if !success {
+			return fmt.Errorf("Failed to merge PR. Is it still open?")
+		}
+		return nil
+	},
+}