Reduce links in chat notifications to avoid multiple previews (#6908)

Some messages had multiple links resulting in multiple previews per message. The superfluous links have been removed leaving only the most important link. All info the other links provided can be immediately accessed through the main link that is left over.

The fork and push messages still have multiple links because from the former you want to see where the fork originates from, the latter has a link per commit.

Resolves #162

## Checklist

The [contributor guide](https://forgejo.org/docs/next/contributor/) contains information that will be helpful to first time contributors. There also are a few [conditions for merging Pull Requests in Forgejo repositories](https://codeberg.org/forgejo/governance/src/branch/main/PullRequestsAgreement.md). You are also welcome to join the [Forgejo development chatroom](https://matrix.to/#/#forgejo-development:matrix.org).

### Tests

- I added test coverage for Go changes...
  - [x] in their respective `*_test.go` for unit tests.
  - [ ] in the `tests/integration` directory if it involves interactions with a live Forgejo server.
- I added test coverage for JavaScript changes...
  - [ ] in `web_src/js/*.test.js` if it can be unit tested.
  - [ ] in `tests/e2e/*.test.e2e.js` if it requires interactions with a live Forgejo server (see also the [developer guide for JavaScript testing](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/tests/e2e/README.md#end-to-end-tests)).

### Documentation

- [ ] I created a pull request [to the documentation](https://codeberg.org/forgejo/docs) to explain to Forgejo users how to use this change.
- [x] I did not document these changes and I do not expect someone else to do it.

### Release notes

- [ ] I do not want this change to show in the release notes.
- [x] I want the title to show in the release notes with a link to this pull request.
- [ ] I want the content of the `release-notes/<pull request number>.md` to be be used for the release notes instead of the title.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6908
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: patka <patka@patka.dev>
Co-committed-by: patka <patka@patka.dev>

services/webhook/telegram_test.go

@@ -33,7 +33,7 @@ func TestTelegramPayload(t *testing.T) {
 		pl, err := tc.Create(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] branch <a href="http://localhost:3000/test/repo/src/test" rel="nofollow">test</a> created`, pl.Message)
+		assert.Equal(t, `[test/repo] branch <a href="http://localhost:3000/test/repo/src/test" rel="nofollow">test</a> created`, pl.Message)
 	})
 
 	t.Run("Delete", func(t *testing.T) {
@@ -42,7 +42,7 @@ func TestTelegramPayload(t *testing.T) {
 		pl, err := tc.Delete(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] branch <a href="http://localhost:3000/test/repo/src/test" rel="nofollow">test</a> deleted`, pl.Message)
+		assert.Equal(t, `[test/repo] branch <a href="http://localhost:3000/test/repo/src/test" rel="nofollow">test</a> deleted`, pl.Message)
 	})
 
 	t.Run("Fork", func(t *testing.T) {
@@ -60,7 +60,7 @@ func TestTelegramPayload(t *testing.T) {
 		pl, err := tc.Push(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>:<a href="http://localhost:3000/test/repo/src/test" rel="nofollow">test</a>] 2 new commits
+		assert.Equal(t, `[test/repo:test] 2 new commits
 [<a href="http://localhost:3000/test/repo/commit/2020558fe2e34debb818a514715839cabd25e778" rel="nofollow">2020558</a>] commit message - user1
 [<a href="http://localhost:3000/test/repo/commit/2020558fe2e34debb818a514715839cabd25e778" rel="nofollow">2020558</a>] commit message - user1`, pl.Message)
 	})
@@ -72,7 +72,7 @@ func TestTelegramPayload(t *testing.T) {
 		pl, err := tc.Issue(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] Issue opened: <a href="http://localhost:3000/test/repo/issues/2" rel="nofollow">#2 crash</a> by <a href="https://try.gitea.io/user1" rel="nofollow">user1</a>
+		assert.Equal(t, `[test/repo] Issue opened: <a href="http://localhost:3000/test/repo/issues/2" rel="nofollow">#2 crash</a> by user1
 
 issue body`, pl.Message)
 
@@ -80,7 +80,7 @@ issue body`, pl.Message)
 		pl, err = tc.Issue(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] Issue closed: <a href="http://localhost:3000/test/repo/issues/2" rel="nofollow">#2 crash</a> by <a href="https://try.gitea.io/user1" rel="nofollow">user1</a>`, pl.Message)
+		assert.Equal(t, `[test/repo] Issue closed: <a href="http://localhost:3000/test/repo/issues/2" rel="nofollow">#2 crash</a> by user1`, pl.Message)
 	})
 
 	t.Run("IssueComment", func(t *testing.T) {
@@ -89,7 +89,7 @@ issue body`, pl.Message)
 		pl, err := tc.IssueComment(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] New comment on issue <a href="http://localhost:3000/test/repo/issues/2" rel="nofollow">#2 crash</a> by <a href="https://try.gitea.io/user1" rel="nofollow">user1</a>
+		assert.Equal(t, `[test/repo] New comment on issue <a href="http://localhost:3000/test/repo/issues/2" rel="nofollow">#2 crash</a> by user1
 more info needed`, pl.Message)
 	})
 
@@ -99,7 +99,7 @@ more info needed`, pl.Message)
 		pl, err := tc.PullRequest(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] Pull request opened: <a href="http://localhost:3000/test/repo/pulls/12" rel="nofollow">#12 Fix bug</a> by <a href="https://try.gitea.io/user1" rel="nofollow">user1</a>
+		assert.Equal(t, `[test/repo] Pull request opened: <a href="http://localhost:3000/test/repo/pulls/12" rel="nofollow">#12 Fix bug</a> by user1
 fixes bug #2`, pl.Message)
 	})
 
@@ -109,7 +109,7 @@ fixes bug #2`, pl.Message)
 		pl, err := tc.IssueComment(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] New comment on pull request <a href="http://localhost:3000/test/repo/pulls/12" rel="nofollow">#12 Fix bug</a> by <a href="https://try.gitea.io/user1" rel="nofollow">user1</a>
+		assert.Equal(t, `[test/repo] New comment on pull request <a href="http://localhost:3000/test/repo/pulls/12" rel="nofollow">#12 Fix bug</a> by user1
 changes requested`, pl.Message)
 	})
 
@@ -139,7 +139,7 @@ good job`, pl.Message)
 		pl, err := tc.Package(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `Package created: <a href="http://localhost:3000/user1/-/packages/container/GiteaContainer/latest" rel="nofollow">GiteaContainer:latest</a> by <a href="https://try.gitea.io/user1" rel="nofollow">user1</a>`, pl.Message)
+		assert.Equal(t, `Package created: <a href="http://localhost:3000/user1/-/packages/container/GiteaContainer/latest" rel="nofollow">GiteaContainer:latest</a> by user1`, pl.Message)
 	})
 
 	t.Run("Wiki", func(t *testing.T) {
@@ -149,19 +149,19 @@ good job`, pl.Message)
 		pl, err := tc.Wiki(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] New wiki page &#39;<a href="http://localhost:3000/test/repo/wiki/index" rel="nofollow">index</a>&#39; (Wiki change comment) by <a href="https://try.gitea.io/user1" rel="nofollow">user1</a>`, pl.Message)
+		assert.Equal(t, `[test/repo] New wiki page &#39;<a href="http://localhost:3000/test/repo/wiki/index" rel="nofollow">index</a>&#39; (Wiki change comment) by user1`, pl.Message)
 
 		p.Action = api.HookWikiEdited
 		pl, err = tc.Wiki(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] Wiki page &#39;<a href="http://localhost:3000/test/repo/wiki/index" rel="nofollow">index</a>&#39; edited (Wiki change comment) by <a href="https://try.gitea.io/user1" rel="nofollow">user1</a>`, pl.Message)
+		assert.Equal(t, `[test/repo] Wiki page &#39;<a href="http://localhost:3000/test/repo/wiki/index" rel="nofollow">index</a>&#39; edited (Wiki change comment) by user1`, pl.Message)
 
 		p.Action = api.HookWikiDeleted
 		pl, err = tc.Wiki(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] Wiki page &#39;<a href="http://localhost:3000/test/repo/wiki/index" rel="nofollow">index</a>&#39; deleted by <a href="https://try.gitea.io/user1" rel="nofollow">user1</a>`, pl.Message)
+		assert.Equal(t, `[test/repo] Wiki page &#39;<a href="http://localhost:3000/test/repo/wiki/index" rel="nofollow">index</a>&#39; deleted by user1`, pl.Message)
 	})
 
 	t.Run("Release", func(t *testing.T) {
@@ -170,7 +170,7 @@ good job`, pl.Message)
 		pl, err := tc.Release(p)
 		require.NoError(t, err)
 
-		assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>] Release created: <a href="http://localhost:3000/test/repo/releases/tag/v1.0" rel="nofollow">v1.0</a> by <a href="https://try.gitea.io/user1" rel="nofollow">user1</a>`, pl.Message)
+		assert.Equal(t, `[test/repo] Release created: <a href="http://localhost:3000/test/repo/releases/tag/v1.0" rel="nofollow">v1.0</a> by user1`, pl.Message)
 	})
 }
 
@@ -206,7 +206,7 @@ func TestTelegramJSONPayload(t *testing.T) {
 	var body TelegramPayload
 	err = json.NewDecoder(req.Body).Decode(&body)
 	require.NoError(t, err)
-	assert.Equal(t, `[<a href="http://localhost:3000/test/repo" rel="nofollow">test/repo</a>:<a href="http://localhost:3000/test/repo/src/test" rel="nofollow">test</a>] 2 new commits
+	assert.Equal(t, `[test/repo:test] 2 new commits
 [<a href="http://localhost:3000/test/repo/commit/2020558fe2e34debb818a514715839cabd25e778" rel="nofollow">2020558</a>] commit message - user1
 [<a href="http://localhost:3000/test/repo/commit/2020558fe2e34debb818a514715839cabd25e778" rel="nofollow">2020558</a>] commit message - user1`, body.Message)
 }