[DO NOT MERGE] cmd/app: Scaffold GitHub application

cmd/app/main.go

@@ -0,0 +1,79 @@
+// Copyright 2023 uwu-tools Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// SPDX-License-Identifier: Apache-2.0
+
+// Derived from https://github.com/airconduct/go-probot/blob/main/example/main.go.
+package main
+
+import (
+	"context"
+
+	"github.com/airconduct/go-probot"
+	probotgh "github.com/airconduct/go-probot/github"
+	"github.com/google/go-github/v48/github"
+	"github.com/spf13/pflag"
+)
+
+func main() {
+	app := probot.NewGithubAPP()
+	app.AddFlags(pflag.CommandLine)
+	pflag.Parse()
+
+	// Add a handler for events "issue_comment.created"
+	app.On(probotgh.Event.IssueComment_created).WithHandler(
+		probotgh.IssueCommentHandler(
+			func(ctx probotgh.IssueCommentContext) {
+				payload := ctx.Payload()
+				ctx.Logger().Info("Get IssueComment event", "payload", payload)
+				owner := payload.Repo.Owner.GetLogin()
+				repo := payload.Repo.GetName()
+				issueNumber := *payload.Issue.Number
+
+				// If any error happen, the error message will be logged and sent as response
+				ctx.Must(
+					ctx.Client().Issues.CreateComment(
+						ctx, owner, repo, issueNumber, &github.IssueComment{
+							Body: github.String("Reply to this comment."),
+						},
+					),
+				)
+			},
+		),
+	)
+
+	// Add a handler for multiple events
+	app.On(
+		probotgh.Event.PullRequest_opened,      // pull_request.opened
+		probotgh.Event.PullRequest_edited,      // pull_request.edited
+		probotgh.Event.PullRequest_synchronize, // pull_request.synchronize
+		probotgh.Event.PullRequest_labeled,     // pull_request.labeled
+		probotgh.Event.PullRequest_assigned,    // pull_request.assigned
+	).WithHandler(probotgh.PullRequestHandler(
+		func(ctx probotgh.PullRequestContext) {
+			payload := ctx.Payload()
+			ctx.Logger().Info(
+				"Do something",
+				"action",
+				payload.GetAction(),
+				"PullRequest labels",
+				payload.PullRequest.Labels,
+			)
+		},
+	))
+
+	if err := app.Run(context.Background()); err != nil {
+		panic(err)
+	}
+}

go.mod

@@ -13,9 +13,11 @@ require (
 	github.com/caarlos0/env/v6 v6.10.1
 	github.com/ghodss/yaml v1.0.0
 	github.com/google/go-cmp v0.5.9
+	github.com/google/go-github/v48 v48.2.0
 	github.com/sethvargo/go-githubactions v1.1.0
 	github.com/sirupsen/logrus v1.9.0
 	github.com/spf13/cobra v1.6.1
+	github.com/spf13/pflag v1.0.5
 	k8s.io/apimachinery v0.24.2
 	k8s.io/test-infra v0.0.0-20230130201249-27b8435f1305
 	sigs.k8s.io/release-utils v0.7.3
@@ -71,7 +73,6 @@ require (
 	github.com/google/gnostic v0.5.7-v3refs // indirect
 	github.com/google/go-containerregistry v0.8.1-0.20220216220642-00c59d91847c // indirect
 	github.com/google/go-github/v45 v45.2.0 // indirect
-	github.com/google/go-github/v48 v48.2.0 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/google/gofuzz v1.2.1-0.20210504230335-f78f29fc09ea // indirect
 	github.com/google/uuid v1.3.0 // indirect
@@ -106,7 +107,6 @@ require (
 	github.com/sethvargo/go-envconfig v0.8.0 // indirect
 	github.com/shurcooL/githubv4 v0.0.0-20221229060216-a8d4a561cc93 // indirect
 	github.com/shurcooL/graphql v0.0.0-20220606043923-3cf50f8a0a29 // indirect
-	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/tektoncd/pipeline v0.36.0 // indirect
 	github.com/trivago/tgo v1.0.7 // indirect
 	go.opencensus.io v0.23.0 // indirect