feat(workflow): Added the workflow for notifying plugin authors in PR's (#180)

* fix(workflow): Fixed a small bug with the issues-check-for-correct-plugin workflow

* feat(workflow): Added a workflow to notify plugin authors for PR's

* add pull-request: write perm

---------

Co-authored-by: Lemmy <studio@quadbyte.net>

.github/workflows/scripts/issues-check-for-correct-plugin.py

@@ -37,4 +37,4 @@ plugin = lines[i].strip()
 
 if "--- SELECT ---" in plugin:
     issue.create_comment("Specify which plugin this issue is about!")
-    issue.edit(state='closed', state_reason='null')
+    issue.edit(state='closed')

.github/workflows/scripts/pr-notify-plugin-authors.py

@@ -0,0 +1,70 @@
+import os
+import sys
+
+from github import Auth, Github
+
+token = os.environ["GITHUB_TOKEN"]
+repo_name = os.environ["REPOSITORY"]
+pull_request_number = os.environ["PULL_REQUEST_NUMBER"]
+
+auth = Auth.Token(token)
+gh = Github(auth=auth)
+repo = gh.get_repo(repo_name)
+
+if pull_request_number.isdigit():
+    pull_request_number = int(pull_request_number)
+else:
+    print("Pull Request number is not numeric!")
+    sys.exit(1)
+
+pull_request = repo.get_pull(pull_request_number)
+
+plugin_dirs = set()
+hidden_dirs = set()
+root_files = set()
+
+for file in pull_request.get_files():
+    file_split = file.filename.split("/")
+    if len(file_split) > 1:
+        root_dir = file_split[0]
+        if root_dir.startswith('.'):
+            hidden_dirs.add(root_dir)
+        else:
+            plugin_dirs.add(root_dir)
+    else:
+        root_files.add(file)
+
+if len(plugin_dirs) > 1:
+    print("Multiple plugin changes in one PR!")
+    pull_request.create_issue_comment("This pull request was automatically closed because it contains changes for two or more plugins in one PR!")
+    pull_request.edit(state='closed')
+    sys.exit(0)
+elif len(plugin_dirs) == 1:
+    plugin_dir = plugin_dirs.pop()
+
+    manifest_file = f"{plugin_dir}/plugin.toml"
+
+    if os.path.exists(manifest_file):
+        file_commits = repo.get_commits(path=manifest_file).reversed
+        author = file_commits[0].author
+
+        if author is not None:
+            author = author.login
+        else:
+            print("Author name is null, returning!")
+            sys.exit(1)
+    else:
+        print(f"Plugin manifest doesn't exist, {manifest_file}")
+        sys.exit(0)
+else:
+    print("This is a non-plugin change, returning!")
+    sys.exit(0)
+
+
+pr_author = pull_request.user.login
+
+if pr_author == author:
+    print("The author and maintainer of the plugin are the same!")
+    sys.exit(0)
+else:
+    pull_request.create_issue_comment(f"CC @{author}")