feature-parity.yml

name: Feature Parity

on:
  pull_request:
    types:
      - opened
      - synchronize
      - labeled
      - unlabeled

jobs:
  check-parity-label:
    runs-on: ubuntu-latest
    if: github.event.action == 'labeled' && github.event.label.name == 'parity'
    permissions:
      contents: read
      pull-requests: write
      issues: write
    steps:
      - name: Check out repository code
        uses: actions/checkout@v4

      - name: Check user permissions
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const { data: permission } = await github.rest.repos.getCollaboratorPermissionLevel({
              owner: context.repo.owner,
              repo: context.repo.repo,
              username: context.actor
            });

            const hasWriteAccess = ['admin', 'write'].includes(permission.permission);

            if (!hasWriteAccess) {
              // Remove the parity label if user doesn't have write access
              await github.rest.issues.removeLabel({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                name: 'parity'
              });
              
              // Add a comment explaining why the label was removed
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: `❌ **Parity Label Removed**\n\n@${context.actor}, you do not have sufficient permissions to add the 'parity' label. Only users with write access can trigger feature parity issues.\n\nIf you believe this feature should be implemented in the Typescript SDK, please ask a maintainer to add the label.`
              });
              
              throw new Error(`User ${context.actor} does not have write access to add parity label`);
            }

            console.log(`User ${context.actor} has ${permission.permission} access - proceeding with parity workflow`);

      - name: Generate GitHub App token
        id: generate-token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ secrets.PARITY_APP_ID }}
          private-key: ${{ secrets.PARITY_APP_PRIVATE_KEY }}
          owner: browserbase
          repositories: stagehand-python

      - name: Create issue in Python SDK repository
        uses: actions/github-script@v7
        with:
          github-token: ${{ steps.generate-token.outputs.token }}
          script: |
            const { data: pullRequest } = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number,
            });

            // Get PR comments for additional context
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });

            // Format comments for the issue description
            let commentsSection = '';
            if (comments.length > 0) {
              commentsSection = '\n\n## Recent Comments\n\n';
              comments.slice(-3).forEach(comment => {
                commentsSection += `**@${comment.user.login}** commented:\n`;
                commentsSection += `${comment.body.substring(0, 500)}${comment.body.length > 500 ? '...' : ''}\n\n`;
              });
            }

            // Get list of changed files for context
            const { data: files } = await github.rest.pulls.listFiles({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number,
            });

            const changedFiles = files.map(file => `- \`${file.filename}\``).join('\n');

            const issueTitle = `[Feature Parity] ${pullRequest.title}`;
            const issueBody = `## Feature Parity Request

            This issue was automatically created from a pull request in the Python Stagehand repository that was labeled with 'parity'.

            ### Original PR Details
            - **PR**: #${context.issue.number} - ${pullRequest.title}
            - **Author**: @${pullRequest.user.login}
            - **Link**: ${pullRequest.html_url}

            ### Description
            ${pullRequest.body || 'No description provided.'}

            ### Changed Files
            ${changedFiles}

            ${commentsSection}

            ### Action Required
            Please review the changes in the original PR and implement equivalent functionality in the Typescript SDK if applicable.

            ---
            *This issue was automatically generated by the Feature Parity workflow.*`;

            // Create the issue in the Typescript repository
            const { data: issue } = await github.rest.issues.create({
              owner: 'browserbase',
              repo: 'stagehand',
              title: issueTitle,
              body: issueBody,
              labels: ['parity']
            });

            console.log(`Created issue: ${issue.html_url}`);

            // Add a comment to the original PR confirming the issue was created
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              body: `🔄 **Feature Parity Issue Created**\n\nAn issue has been automatically created in the Typescript SDK repository to track parity implementation:\n${issue.html_url}`
            });