ci: update MAINTAINERS.yaml based on CODEOWNERS changes

.github/workflows/update-maintainers.yml

@@ -0,0 +1,134 @@
+name: Update MAINTAINERS.yaml
+
+on:
+  pull_request:
+    types: [closed]
+    paths:
+      - 'CODEOWNERS'
+
+jobs:
+  update-maintainers:
+    if: github.event.pull_request.merged
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout main branch
+        uses: actions/checkout@v2
+        with:
+          ref: master
+          path: current_state
+
+      - name: Checkout one commit before last one
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 2
+          ref: master
+          path: previous_state
+
+      - run: cd previous_state && git checkout HEAD^
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '14'
+
+      - name: Install js-yaml
+        run: npm install [email protected]
+
+      - name: Get repository name
+        run: |
+          REPO_NAME=$(basename ${{ github.repository }})
+          echo "REPO_NAME=$REPO_NAME" >> $GITHUB_ENV
+          echo "Repository Name: $REPO_NAME"
+
+      - name: Compare CODEOWNERS
+        id: compare-codeowners
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const fs = require('fs');
+            const yaml = require('js-yaml');
+
+            // Get repository name
+            const repoName = process.env.REPO_NAME;
+
+            function extractGitHubUsernames(content) {
+              const regex = /@([a-zA-Z0-9_-]+)/g;
+              const matches = content.match(regex);
+              if (!matches) {
+                return [];
+              }
+              return matches.map(match => match.substr(1));
+            }
+
+            const mainCodeowners = fs.readFileSync('./current_state/CODEOWNERS', 'utf8');
+            const prCodeowners = fs.readFileSync('./previous_state/CODEOWNERS', 'utf8');
+
+            const mainUsernames = extractGitHubUsernames(mainCodeowners);
+            const prUsernames = extractGitHubUsernames(prCodeowners);
+
+            const addedUsernames = mainUsernames.filter(username => !prUsernames.includes(username));
+            const removedUsernames = prUsernames.filter(username => !mainUsernames.includes(username));
+            console.log('Added Usernames:', addedUsernames);
+            console.log('Removed Usernames:', removedUsernames);
+            console.log(`ADDED_USERNAMES=${addedUsernames.join(', ')}`);
+            console.log(`REMOVED_USERNAMES=${removedUsernames.join(', ')}`);
+
+            // Update MAINTAINERS.yaml
+            const maintainersFile = './current_state/MAINTAINERS.yaml';
+            const maintainers = yaml.safeLoad(fs.readFileSync(maintainersFile, 'utf8'));
+
+            // Update for added usernames
+            addedUsernames.forEach(username => {
+              // Exclude bot accounts
+              if (username === 'asyncapi-bot' || username === 'asyncapi-bot-eve') {
+                console.log('Skipping bot account:', username);
+                return; // Skip the iteration for bot accounts
+              }
+              const existingMaintainer = maintainers.find(maintainer => maintainer.github === username);
+              if (!existingMaintainer) {
+                maintainers.push({
+                  github: username,
+                  isTscMember: false,
+                  repos: [repoName]
+                });
+                console.log('Added maintainer:', username);
+              } else {
+                console.log('Maintainer', username, 'already exists. Skipping addition.');
+              }
+            });
+
+            // Update for removed usernames
+            removedUsernames.forEach(username => {
+              const index = maintainers.findIndex(maintainer => maintainer.github === username);
+              if (index !== -1) {
+                const maintainer = maintainers[index];
+                const repoIndex = maintainer.repos.indexOf(repoName);
+
+                if (repoIndex !== -1) {
+                  maintainer.repos.splice(repoIndex, 1);
+                  console.log(`Removed repository ${repoName} from maintainer ${username}`);
+
+                  if (maintainer.repos.length === 0) {
+                    maintainers.splice(index, 1);
+                    console.log(`Removed maintainer ${username} as they have no other repositories`);
+                  }
+                } else {
+                  console.log(`Repository ${repoName} not found for maintainer ${username}`);
+                }
+              } else {
+                console.log(`Maintainer ${username} does not exist. Skipping removal.`);
+              }
+            });
+
+            // Write updated MAINTAINERS.yaml file
+            const updatedMaintainers = yaml.safeDump(maintainers);
+            fs.writeFileSync(maintainersFile, updatedMaintainers);
+            console.log('Updated MAINTAINERS.yaml:', updatedMaintainers);
+
+      - name: Commit and push
+        working-directory: ./current_state
+        run: |
+          git add .
+          git commit -m "Update MAINTAINERS.yaml"
+          git push https://${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }} master