wizard-ci-trigger.yml

name: Wizard CI Trigger

on:
  pull_request:
    types: [opened]
  issue_comment:
    types: [created]
  workflow_dispatch:
    inputs:
      pr_number:
        description: 'Pull request number to post the hint comment on'
        required: true
        type: number

permissions:
  contents: read
  issues: write
  pull-requests: write

jobs:
  # ============================================================================
  # POST WELCOME: First-time hint with all available apps
  # ============================================================================
  post-welcome:
    if: github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch'
    runs-on: ubuntu-latest
    steps:
      - name: Fetch available apps from wizard-workbench
        id: fetch-apps
        run: |
          # Fetch app categories from wizard-workbench repo
          CATEGORIES=$(curl -s "https://api.github.com/repos/PostHog/wizard-workbench/contents/apps" \
            -H "Accept: application/vnd.github.v3+json" \
            | jq -r '[.[] | select(.type == "dir") | .name] | sort | .[]')

          # Build lists by category
          CATEGORY_LIST=""
          APP_LIST_VISIBLE=""
          APP_LIST_COLLAPSED=""
          APP_COUNT=0
          VISIBLE_COUNT=3

          for category in $CATEGORIES; do
            # Fetch apps in this category
            APPS=$(curl -s "https://api.github.com/repos/PostHog/wizard-workbench/contents/apps/$category" \
              -H "Accept: application/vnd.github.v3+json" \
              | jq -r '[.[] | select(.type == "dir") | .name] | sort | .[]' 2>/dev/null || echo "")

            if [ -n "$APPS" ]; then
              # Add to category list
              CATEGORY_LIST="$CATEGORY_LIST- \`/wizard-ci $category\`\n"

              # Add apps to visible or collapsed list
              for app in $APPS; do
                if [ $APP_COUNT -lt $VISIBLE_COUNT ]; then
                  APP_LIST_VISIBLE="$APP_LIST_VISIBLE- \`/wizard-ci $category/$app\`\n"
                else
                  APP_LIST_COLLAPSED="$APP_LIST_COLLAPSED- \`/wizard-ci $category/$app\`\n"
                fi
                APP_COUNT=$((APP_COUNT + 1))
              done
            fi
          done

          # Use heredoc for multiline outputs
          {
            echo "categories<<EOF"
            echo -e "$CATEGORY_LIST"
            echo "EOF"
          } >> $GITHUB_OUTPUT

          {
            echo "apps_visible<<EOF"
            echo -e "$APP_LIST_VISIBLE"
            echo "EOF"
          } >> $GITHUB_OUTPUT

          {
            echo "apps_collapsed<<EOF"
            echo -e "$APP_LIST_COLLAPSED"
            echo "EOF"
          } >> $GITHUB_OUTPUT

      - name: Post wizard-ci hint
        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7
        env:
          CATEGORIES_OUTPUT: ${{ steps.fetch-apps.outputs.categories }}
          APPS_VISIBLE_OUTPUT: ${{ steps.fetch-apps.outputs.apps_visible }}
          APPS_COLLAPSED_OUTPUT: ${{ steps.fetch-apps.outputs.apps_collapsed }}
          PR_NUMBER: ${{ inputs.pr_number }}
        with:
          script: |
            const categories = process.env.CATEGORIES_OUTPUT || '';
            const appsVisible = process.env.APPS_VISIBLE_OUTPUT || '';
            const appsCollapsed = process.env.APPS_COLLAPSED_OUTPUT || '';
            const inputPrNumber = process.env.PR_NUMBER;

            const bodyParts = [
              '## 🧙 Wizard CI',
              '',
              'Run the Wizard CI and test your changes against [wizard-workbench](https://github.com/PostHog/wizard-workbench) example apps by replying with a GitHub comment using one of the following commands:',
              '',
              '**Test all apps:**',
              '- `/wizard-ci all`',
              '',
              '**Test all apps in a directory:**',
              categories.trim(),
              '',
              '**Test an individual app:**',
              appsVisible.trim()
            ];

            if (appsCollapsed.trim()) {
              bodyParts.push('');
              bodyParts.push('<details>');
              bodyParts.push('<summary>Show more apps</summary>');
              bodyParts.push('');
              bodyParts.push(appsCollapsed.trim());
              bodyParts.push('</details>');
            }

            bodyParts.push('');
            bodyParts.push('Results will be posted here when complete.');

            const body = bodyParts.join('\n');

            const prNumber = context.eventName === 'workflow_dispatch'
              ? parseInt(inputPrNumber, 10)
              : context.payload.pull_request.number;

            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: prNumber,
              body
            });

  # ============================================================================
  # HANDLE COMMAND: Parse /wizard-ci and trigger workflow
  # ============================================================================
  handle-command:
    if: |
      github.event_name == 'issue_comment' &&
      github.event.issue.pull_request &&
      startsWith(github.event.comment.body, '/wizard-ci')
    runs-on: ubuntu-latest
    steps:
      - name: Generate GitHub App token
        id: app-token
        uses: actions/create-github-app-token@d72941d797fd3113feb6b93fd0dec494b13a2547 # v1
        with:
          app-id: ${{ secrets.GH_APP_POSTHOG_WIZARD_CI_BOT_APP_ID }}
          private-key: ${{ secrets.GH_APP_POSTHOG_WIZARD_CI_BOT_PRIVATE_KEY }}
          owner: PostHog
          repositories: wizard-workbench,context-mill

      - name: Parse command and trigger
        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7
        with:
          github-token: ${{ steps.app-token.outputs.token }}
          script: |
            // Get PR details first to check state
            const pr = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.payload.issue.number
            });

            // Only allow triggers on open PRs (including drafts)
            if (pr.data.state !== 'open') {
              console.log(`PR is ${pr.data.state}, skipping trigger`);
              return;
            }

            const comment = context.payload.comment.body;
            const match = comment.match(/\/wizard-ci\s+(\S+)/);
            const app = match ? match[1] : 'all';

            // React with rocket to show we're processing
            await github.rest.reactions.createForIssueComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              comment_id: context.payload.comment.id,
              content: 'rocket'
            });

            // Trigger wizard-ci on wizard-workbench
            await github.rest.repos.createDispatchEvent({
              owner: 'PostHog',
              repo: 'wizard-workbench',
              event_type: 'wizard-ci-trigger',
              client_payload: {
                app: app,
                source: 'context-mill-pr',
                source_repo: 'context-mill',
                source_pr_number: context.payload.issue.number,
                source_pr_url: pr.data.html_url,
                context_mill_ref: pr.data.head.ref,
                notify_slack: 'false',
                notify_pr: 'true'
              }
            });

            console.log(`Triggered wizard-ci for app: ${app}`);