release-comment-handler.yml

name: Release Comment Handler

on:
  issues:
    types:
      - labeled

jobs:
  comment_on_label:
    if: github.event.label.name == 'prerelease' || github.event.label.name == 'fixed'
    runs-on: ubuntu-latest
    permissions:
      issues: write
      contents: read
    steps:
      - name: Gather participants
        id: participants
        uses: actions/github-script@v7
        with:
          script: |
            console.log("=== WORKFLOW START ===");
            const issue_number = context.payload.issue.number;
            const repo = context.repo;

            console.log(`Processing issue #${issue_number} in ${repo.owner}/${repo.repo}`);

            // Get issue details (for author)
            const issue = context.payload.issue;
            const author = issue.user.login;
            console.log(`Issue author: ${author}`);

            // Use a Set to track all unique participants (normalized to lowercase for deduplication)
            const all_participants = new Set();
            
            // Add the issue author
            all_participants.add(author.toLowerCase());
            console.log(`Added author to participants: ${author.toLowerCase()}`);

            // Get all comments and add commenters
            console.log("=== FETCHING COMMENTS ===");
            const comments = await github.paginate(
              github.rest.issues.listComments,
              { ...repo, issue_number }
            );
            console.log(`Found ${comments.length} comments`);
            
            if (comments.length === 0) {
              console.log("❌ NO COMMENTS FOUND - This might be why no users are tagged");
            }
            
            comments.forEach((c, index) => {
              const commenter = c.user.login.toLowerCase();
              all_participants.add(commenter);
              console.log(`Comment #${index + 1}: Added commenter: ${commenter} (original: ${c.user.login})`);
            });

            // Get all reactions from comments
            let totalCommentReactions = 0;
            for (const comment of comments) {
              const reactions = await github.paginate(
                github.rest.reactions.listForIssueComment,
                { ...repo, comment_id: comment.id }
              );
              totalCommentReactions += reactions.length;
              reactions.forEach(r => {
                const reactor = r.user.login.toLowerCase();
                all_participants.add(reactor);
                console.log(`Added comment reactor: ${reactor}`);
              });
            }
            console.log(`Processed ${totalCommentReactions} reactions from comments`);
            
            // Get reactions on main issue body
            const issue_reactions = await github.paginate(
              github.rest.reactions.listForIssue,
              { ...repo, issue_number }
            );
            console.log(`Found ${issue_reactions.length} reactions on issue body`);
            
            issue_reactions.forEach(r => {
              const reactor = r.user.login.toLowerCase();
              all_participants.add(reactor);
              console.log(`Added issue reactor: ${reactor}`);
            });

            console.log(`Total unique participants before bot filtering: ${all_participants.size}`);
            console.log(`Participants: ${Array.from(all_participants).join(', ')}`);

            // Filter out bot users
            const isBotUser = (username) => {
              const lowerUsername = username.toLowerCase();
              return lowerUsername.endsWith('[bot]') || 
                lowerUsername === 'dependabot' || 
                lowerUsername === 'renovate' || 
                lowerUsername === 'greenkeeper' || 
                lowerUsername === 'codecov' || 
                lowerUsername === 'coveralls' ||
                lowerUsername.startsWith('dependabot[') ||
                lowerUsername.includes('-bot') ||
                lowerUsername.includes('_bot');
            };

            // Convert Set to array and filter out bots
            const all_users = Array.from(all_participants).filter(user => !isBotUser(user));
            
            const filteredBots = Array.from(all_participants).filter(user => isBotUser(user));
            console.log(`Filtered out ${filteredBots.length} bot users: ${filteredBots.join(', ')}`);
            console.log(`Final participants count: ${all_users.length}`);
            console.log(`Final participants: ${all_users.join(', ')}`);

            if (all_users.length === 0) {
              console.log("No participants to mention after filtering");
              const fs = require('fs');
              fs.appendFileSync(process.env.GITHUB_ENV, 'MENTIONS=\n');
              return;
            }

            const mentions = all_users.map(u => `@${u}`).join(' ');
            console.log(`Generated mentions: ${mentions}`);
            console.log(`Setting environment variable 'MENTIONS' to: "${mentions}"`);

            const fs = require('fs');
            fs.appendFileSync(process.env.GITHUB_ENV, `MENTIONS=${mentions}\n`);
            return { mentions: mentions };
          result-encoding: string

      - name: Add label comment
        uses: actions/github-script@v7
        with:
          script: |
            console.log("=== STEP 2: ADD COMMENT ===");
            console.log("Environment variable access:");
            console.log("process.env.MENTIONS:", process.env.MENTIONS);
            
            const mentions = process.env.MENTIONS || '';
            const labelName = context.payload.label.name;
            
            console.log(`Processing label: ${labelName}`);
            console.log(`Mentions received: "${mentions}"`);
            console.log(`Mentions length: ${mentions.length}`);
            console.log(`Mentions trimmed length: ${mentions.trim().length}`);
            
            let message;
            
            if (labelName === 'prerelease') {
              console.log("Processing prerelease label");
              if (mentions.trim() === "") {
                console.log("No participants to mention for prerelease. Skipping comment creation.");
                return;
              }
              message = `${mentions}\n\nA fix for this issue is now available in the next pre-releases of C#DK/C#. If you'd like to try out the fix, please see [these instructions](https://github.com/microsoft/vscode-dotnettools/wiki/Installing-and-updating-pre%E2%80%90release-versions-of-C%23-Dev-Kit-and-C%23-Extension) to update or try pre-release versions.`;
              console.log("Generated prerelease message");
            } else if (labelName === 'fixed') {
              console.log("Processing fixed label");
              message = mentions.trim() !== ""
                ? `${mentions}\n\nThis issue has been fixed! Please update to the latest versions of VS Code, C# Dev Kit, and the C# extension.`
                : `This issue has been fixed! Please update to the latest versions of VS Code, C# Dev Kit, and the C# extension.`;
              console.log(`Generated fixed message ${mentions.trim() !== "" ? "with" : "without"} mentions`);
            }

            console.log(`Final message length: ${message.length}`);
            console.log(`Creating comment on issue #${context.payload.issue.number}`);

            await github.rest.issues.createComment({
              ...context.repo,
              issue_number: context.payload.issue.number,
              body: message
            });
            
            console.log("Comment created successfully");