demo.yml

# GitGlimpse E2E Demo Workflow
# Runs the action against a local example app on every PR.
# Safe: no untrusted user input (PR titles/bodies) is used in run: commands.
#
# ⚠️  IMPORTANT — changes to this file only take effect after merging to main.
#
# GitHub always reads issue_comment workflows from the default branch (main),
# so edits to this file on a feature branch are silently ignored when /glimpse
# is triggered. To test a workflow change: merge to main first, then re-run.
# (Action/core code changes are fine on branches — they are rebuilt from source.)
name: GitGlimpse Demo

on:
  pull_request:
    types: [opened, synchronize]
  issue_comment:
    types: [created]

jobs:
  demo:
    runs-on: ubuntu-latest
    # Run on PR events, or on issue_comment only if it's a PR comment containing /glimpse
    if: >-
      github.event_name == 'pull_request' ||
      (github.event_name == 'issue_comment' &&
       github.event.issue.pull_request != null &&
       contains(github.event.comment.body, '/glimpse'))
    permissions:
      pull-requests: write
      contents: write
      issues: write

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          ref: ${{ github.event_name == 'issue_comment' && format('refs/pull/{0}/head', github.event.issue.number) || '' }}

      - uses: pnpm/action-setup@v4

      - uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'pnpm'

      - name: Install dependencies
        run: pnpm install

      # Always build from source so the action dist matches the checked-out code.
      # This ensures /glimpse on a PR branch uses that branch's action/core code,
      # not whatever was last committed to dist or published to main.
      - name: Build action from source
        run: pnpm build

      # Check whether the pipeline should run before installing heavy dependencies.
      # Subsequent steps are gated on this output to skip ffmpeg/Playwright when
      # the trigger config (on-demand, smart, etc.) decides to skip the run.
      - uses: ./check-trigger
        id: check
        with:
          config-path: examples/simple-app/git-glimpse.config.ts
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Install FFmpeg
        if: steps.check.outputs.should-run == 'true'
        run: sudo apt-get install -y ffmpeg

      - name: Cache Playwright browsers
        if: steps.check.outputs.should-run == 'true'
        uses: actions/cache@v4
        with:
          path: ~/.cache/ms-playwright
          key: playwright-chromium-${{ hashFiles('pnpm-lock.yaml') }}
          restore-keys: playwright-chromium-

      - name: Install Playwright Chromium
        if: steps.check.outputs.should-run == 'true'
        run: pnpm --filter @git-glimpse/core exec playwright install chromium --with-deps

      - name: Start example app
        if: steps.check.outputs.should-run == 'true'
        run: node examples/simple-app/server.js &

      - name: Wait for app to be ready
        if: steps.check.outputs.should-run == 'true'
        run: |
          for i in $(seq 1 15); do
            curl -sf http://localhost:3000 && echo "App ready" && exit 0
            echo "Waiting... ($i)"
            sleep 1
          done
          echo "App did not become ready" && exit 1

      - uses: ./packages/action
        if: steps.check.outputs.should-run == 'true'
        with:
          preview-url: 'http://localhost:3000'
          config-path: examples/simple-app/git-glimpse.config.ts
        env:
          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: React with hooray on success
        if: >-
          github.event_name == 'issue_comment' &&
          steps.check.outputs.should-run == 'true' &&
          success()
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh api repos/$GITHUB_REPOSITORY/issues/comments/${{ github.event.comment.id }}/reactions \
            --method POST --field content=hooray || true

      - name: React with confused on failure
        if: >-
          github.event_name == 'issue_comment' &&
          failure()
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh api repos/$GITHUB_REPOSITORY/issues/comments/${{ github.event.comment.id }}/reactions \
            --method POST --field content=confused || true