Telegram webhook (#4227)

3 files changed, 343 insertions, 0 deletions

diff --git a/models/webhook.go b/models/webhook.go
index eb22e95975..8db281a15c 100644
--- a/models/webhook.go
+++ b/models/webhook.go
@@ -145,6 +145,15 @@ func (w *Webhook) GetDiscordHook() *DiscordMeta {
 	return s
 }
 
+// GetTelegramHook returns telegram metadata
+func (w *Webhook) GetTelegramHook() *TelegramMeta {
+	s := &TelegramMeta{}
+	if err := json.Unmarshal([]byte(w.Meta), s); err != nil {
+		log.Error("webhook.GetTelegramHook(%d): %v", w.ID, err)
+	}
+	return s
+}
+
 // History returns history of webhook by given conditions.
 func (w *Webhook) History(page int) ([]*HookTask, error) {
 	return HookTasks(w.ID, page)
@@ -456,6 +465,7 @@ const (
 	GITEA
 	DISCORD
 	DINGTALK
+	TELEGRAM
 )
 
 var hookTaskTypes = map[string]HookTaskType{
@@ -464,6 +474,7 @@ var hookTaskTypes = map[string]HookTaskType{
 	"slack":    SLACK,
 	"discord":  DISCORD,
 	"dingtalk": DINGTALK,
+	"telegram": TELEGRAM,
 }
 
 // ToHookTaskType returns HookTaskType by given name.
@@ -484,6 +495,8 @@ func (t HookTaskType) Name() string {
 		return "discord"
 	case DINGTALK:
 		return "dingtalk"
+	case TELEGRAM:
+		return "telegram"
 	}
 	return ""
 }
@@ -657,6 +670,11 @@ func prepareWebhook(e Engine, w *Webhook, repo *Repository, event HookEventType,
 		if err != nil {
 			return fmt.Errorf("GetDingtalkPayload: %v", err)
 		}
+	case TELEGRAM:
+		payloader, err = GetTelegramPayload(p, event, w.Meta)
+		if err != nil {
+			return fmt.Errorf("GetTelegramPayload: %v", err)
+		}
 	default:
 		p.SetSecret(w.Secret)
 		payloader = p
diff --git a/models/webhook_telegram.go b/models/webhook_telegram.go
new file mode 100644
index 0000000000..5680c48b85
--- /dev/null
+++ b/models/webhook_telegram.go
@@ -0,0 +1,322 @@
+// Copyright 2019 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 models
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/markup"
+	api "code.gitea.io/sdk/gitea"
+)
+
+type (
+	// TelegramPayload represents
+	TelegramPayload struct {
+		Message   string `json:"text"`
+		ParseMode string `json:"parse_mode"`
+	}
+
+	// TelegramMeta contains the telegram metadata
+	TelegramMeta struct {
+		BotToken string `json:"bot_token"`
+		ChatID   string `json:"chat_id"`
+	}
+)
+
+// SetSecret sets the telegram secret
+func (p *TelegramPayload) SetSecret(_ string) {}
+
+// JSONPayload Marshals the TelegramPayload to json
+func (p *TelegramPayload) JSONPayload() ([]byte, error) {
+	p.ParseMode = "HTML"
+	p.Message = markup.Sanitize(p.Message)
+	data, err := json.MarshalIndent(p, "", "  ")
+	if err != nil {
+		return []byte{}, err
+	}
+	return data, nil
+}
+
+func getTelegramCreatePayload(p *api.CreatePayload) (*TelegramPayload, error) {
+	// created tag/branch
+	refName := git.RefEndName(p.Ref)
+	title := fmt.Sprintf(`[<a href="%s">%s</a>] %s <a href="%s">%s</a> created`, p.Repo.HTMLURL, p.Repo.FullName, p.RefType,
+		p.Repo.HTMLURL+"/src/"+refName, refName)
+
+	return &TelegramPayload{
+		Message: title,
+	}, nil
+}
+
+func getTelegramDeletePayload(p *api.DeletePayload) (*TelegramPayload, error) {
+	// created tag/branch
+	refName := git.RefEndName(p.Ref)
+	title := fmt.Sprintf(`[<a href="%s">%s</a>] %s <a href="%s">%s</a> deleted`, p.Repo.HTMLURL, p.Repo.FullName, p.RefType,
+		p.Repo.HTMLURL+"/src/"+refName, refName)
+
+	return &TelegramPayload{
+		Message: title,
+	}, nil
+}
+
+func getTelegramForkPayload(p *api.ForkPayload) (*TelegramPayload, error) {
+	title := fmt.Sprintf(`%s is forked to <a href="%s">%s</a>`, p.Forkee.FullName, p.Repo.HTMLURL, p.Repo.FullName)
+
+	return &TelegramPayload{
+		Message: title,
+	}, nil
+}
+
+func getTelegramPushPayload(p *api.PushPayload) (*TelegramPayload, error) {
+	var (
+		branchName = git.RefEndName(p.Ref)
+		commitDesc string
+	)
+
+	var titleLink string
+	if len(p.Commits) == 1 {
+		commitDesc = "1 new commit"
+		titleLink = p.Commits[0].URL
+	} else {
+		commitDesc = fmt.Sprintf("%d new commits", len(p.Commits))
+		titleLink = p.CompareURL
+	}
+	if titleLink == "" {
+		titleLink = p.Repo.HTMLURL + "/src/" + branchName
+	}
+	title := fmt.Sprintf(`[<a href="%s">%s</a>:<a href="%s">%s</a>] %s`, p.Repo.HTMLURL, p.Repo.FullName, titleLink, branchName, commitDesc)
+
+	var text string
+	// for each commit, generate attachment text
+	for i, commit := range p.Commits {
+		var authorName string
+		if commit.Author != nil {
+			authorName = " - " + commit.Author.Name
+		}
+		text += fmt.Sprintf(`[<a href="%s">%s</a>] %s`, commit.URL, commit.ID[:7],
+			strings.TrimRight(commit.Message, "\r\n")) + authorName
+		// add linebreak to each commit but the last
+		if i < len(p.Commits)-1 {
+			text += "\n"
+		}
+	}
+
+	return &TelegramPayload{
+		Message: title + "\n" + text,
+	}, nil
+}
+
+func getTelegramIssuesPayload(p *api.IssuePayload) (*TelegramPayload, error) {
+	var text, title string
+	switch p.Action {
+	case api.HookIssueOpened:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue opened: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	case api.HookIssueClosed:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue closed: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	case api.HookIssueReOpened:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue re-opened: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	case api.HookIssueEdited:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue edited: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	case api.HookIssueAssigned:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue assigned to %s: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.Assignee.UserName, p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	case api.HookIssueUnassigned:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue unassigned: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	case api.HookIssueLabelUpdated:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue labels updated: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	case api.HookIssueLabelCleared:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue labels cleared: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	case api.HookIssueSynchronized:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue synchronized: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	case api.HookIssueMilestoned:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue milestone: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	case api.HookIssueDemilestoned:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Issue clear milestone: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.Issue.URL, p.Index, p.Issue.Title)
+		text = p.Issue.Body
+	}
+
+	return &TelegramPayload{
+		Message: title + "\n\n" + text,
+	}, nil
+}
+
+func getTelegramIssueCommentPayload(p *api.IssueCommentPayload) (*TelegramPayload, error) {
+	url := fmt.Sprintf("%s/issues/%d#%s", p.Repository.HTMLURL, p.Issue.Index, CommentHashTag(p.Comment.ID))
+	title := fmt.Sprintf(`<a href="%s">#%d %s</a>`, url, p.Issue.Index, p.Issue.Title)
+	var text string
+	switch p.Action {
+	case api.HookIssueCommentCreated:
+		text = "New comment: " + title
+		text += p.Comment.Body
+	case api.HookIssueCommentEdited:
+		text = "Comment edited: " + title
+		text += p.Comment.Body
+	case api.HookIssueCommentDeleted:
+		text = "Comment deleted: " + title
+		text += p.Comment.Body
+	}
+
+	return &TelegramPayload{
+		Message: title + "\n" + text,
+	}, nil
+}
+
+func getTelegramPullRequestPayload(p *api.PullRequestPayload) (*TelegramPayload, error) {
+	var text, title string
+	switch p.Action {
+	case api.HookIssueOpened:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request opened: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		text = p.PullRequest.Body
+	case api.HookIssueClosed:
+		if p.PullRequest.HasMerged {
+			title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request merged: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+				p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		} else {
+			title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request closed: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+				p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		}
+		text = p.PullRequest.Body
+	case api.HookIssueReOpened:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request re-opened: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		text = p.PullRequest.Body
+	case api.HookIssueEdited:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request edited: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		text = p.PullRequest.Body
+	case api.HookIssueAssigned:
+		list, err := MakeAssigneeList(&Issue{ID: p.PullRequest.ID})
+		if err != nil {
+			return &TelegramPayload{}, err
+		}
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request assigned to %s: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			list, p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		text = p.PullRequest.Body
+	case api.HookIssueUnassigned:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request unassigned: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		text = p.PullRequest.Body
+	case api.HookIssueLabelUpdated:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request labels updated: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		text = p.PullRequest.Body
+	case api.HookIssueLabelCleared:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request labels cleared: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		text = p.PullRequest.Body
+	case api.HookIssueSynchronized:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request synchronized: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		text = p.PullRequest.Body
+	case api.HookIssueMilestoned:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request milestone: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		text = p.PullRequest.Body
+	case api.HookIssueDemilestoned:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Pull request clear milestone: <a href="%s">#%d %s</a>`, p.Repository.HTMLURL, p.Repository.FullName,
+			p.PullRequest.HTMLURL, p.Index, p.PullRequest.Title)
+		text = p.PullRequest.Body
+	}
+
+	return &TelegramPayload{
+		Message: title + "\n" + text,
+	}, nil
+}
+
+func getTelegramRepositoryPayload(p *api.RepositoryPayload) (*TelegramPayload, error) {
+	var title string
+	switch p.Action {
+	case api.HookRepoCreated:
+		title = fmt.Sprintf(`[<a href="%s">%s</a>] Repository created`, p.Repository.HTMLURL, p.Repository.FullName)
+		return &TelegramPayload{
+			Message: title,
+		}, nil
+	case api.HookRepoDeleted:
+		title = fmt.Sprintf("[%s] Repository deleted", p.Repository.FullName)
+		return &TelegramPayload{
+			Message: title,
+		}, nil
+	}
+	return nil, nil
+}
+
+func getTelegramReleasePayload(p *api.ReleasePayload) (*TelegramPayload, error) {
+	var title, url string
+	switch p.Action {
+	case api.HookReleasePublished:
+		title = fmt.Sprintf("[%s] Release created", p.Release.TagName)
+		url = p.Release.URL
+		return &TelegramPayload{
+			Message: title + "\n" + url,
+		}, nil
+	case api.HookReleaseUpdated:
+		title = fmt.Sprintf("[%s] Release updated", p.Release.TagName)
+		url = p.Release.URL
+		return &TelegramPayload{
+			Message: title + "\n" + url,
+		}, nil
+
+	case api.HookReleaseDeleted:
+		title = fmt.Sprintf("[%s] Release deleted", p.Release.TagName)
+		url = p.Release.URL
+		return &TelegramPayload{
+			Message: title + "\n" + url,
+		}, nil
+	}
+
+	return nil, nil
+}
+
+// GetTelegramPayload converts a telegram webhook into a TelegramPayload
+func GetTelegramPayload(p api.Payloader, event HookEventType, meta string) (*TelegramPayload, error) {
+	s := new(TelegramPayload)
+
+	switch event {
+	case HookEventCreate:
+		return getTelegramCreatePayload(p.(*api.CreatePayload))
+	case HookEventDelete:
+		return getTelegramDeletePayload(p.(*api.DeletePayload))
+	case HookEventFork:
+		return getTelegramForkPayload(p.(*api.ForkPayload))
+	case HookEventIssues:
+		return getTelegramIssuesPayload(p.(*api.IssuePayload))
+	case HookEventIssueComment:
+		return getTelegramIssueCommentPayload(p.(*api.IssueCommentPayload))
+	case HookEventPush:
+		return getTelegramPushPayload(p.(*api.PushPayload))
+	case HookEventPullRequest:
+		return getTelegramPullRequestPayload(p.(*api.PullRequestPayload))
+	case HookEventRepository:
+		return getTelegramRepositoryPayload(p.(*api.RepositoryPayload))
+	case HookEventRelease:
+		return getTelegramReleasePayload(p.(*api.ReleasePayload))
+	}
+
+	return s, nil
+}
diff --git a/models/webhook_test.go b/models/webhook_test.go
index 50106a3792..518be8be8a 100644
--- a/models/webhook_test.go
+++ b/models/webhook_test.go
@@ -197,18 +197,21 @@ func TestToHookTaskType(t *testing.T) {
 	assert.Equal(t, GOGS, ToHookTaskType("gogs"))
 	assert.Equal(t, SLACK, ToHookTaskType("slack"))
 	assert.Equal(t, GITEA, ToHookTaskType("gitea"))
+	assert.Equal(t, TELEGRAM, ToHookTaskType("telegram"))
 }
 
 func TestHookTaskType_Name(t *testing.T) {
 	assert.Equal(t, "gogs", GOGS.Name())
 	assert.Equal(t, "slack", SLACK.Name())
 	assert.Equal(t, "gitea", GITEA.Name())
+	assert.Equal(t, "telegram", TELEGRAM.Name())
 }
 
 func TestIsValidHookTaskType(t *testing.T) {
 	assert.True(t, IsValidHookTaskType("gogs"))
 	assert.True(t, IsValidHookTaskType("slack"))
 	assert.True(t, IsValidHookTaskType("gitea"))
+	assert.True(t, IsValidHookTaskType("telegram"))
 	assert.False(t, IsValidHookTaskType("invalid"))
 }