Refactor webhooks to reduce code duplication (#9422)

* Start webhook refactoring to reduce code duplication

* More webhook refactoring

* Unify webhook release messages

* Fix webhook release link

* Remove sql import

* More webhook refactoring

* More webhook refactoring

* Webhook tests extended

* Fixed issue opened webhook

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <matti@mdranta.net>

modules/webhook/telegram_test.go

@@ -0,0 +1,24 @@
+// 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 webhook
+
+import (
+	"testing"
+
+	api "code.gitea.io/gitea/modules/structs"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetTelegramIssuesPayload(t *testing.T) {
+	p := issueTestPayload()
+	p.Action = api.HookIssueClosed
+
+	pl, err := getTelegramIssuesPayload(p)
+	require.Nil(t, err)
+	require.NotNil(t, pl)
+
+	assert.Equal(t, "[<a href=\"http://localhost:3000/test/repo\">test/repo</a>] Issue closed: <a href=\"http://localhost:3000/test/repo/issues/2\">#2 crash</a> by <a href=\"https://try.gitea.io/user1\">user1</a>\n\n", pl.Message)
+}