name: Storybook Visual

on:
  workflow_dispatch:
    inputs:
      branch:
        description: "Repository branch to publish (deployment only; empty uses the selected workflow branch)"
        required: false
        type: string
        default: ""
      deploy_preview:
        description: "Publish this branch to S3/CloudFront instead of running visual tests (CODEOWNERS only)"
        required: false
        type: boolean
        default: false
      update_snapshots:
        description: "Generate updated snapshots and a baseline review bundle"
        required: false
        type: boolean
        default: false
  pull_request:
    branches:
      - master
    types:
      - opened
      - reopened
      - synchronize
      - labeled

concurrency:
  group: storybook-visual-${{ inputs.deploy_preview && github.run_id || 'visual' }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  visual:
    name: Storybook visual regression
    if: >-
      (github.event_name == 'workflow_dispatch' && !inputs.deploy_preview) ||
      (github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'storybook-visual'))
    runs-on: ubuntu-latest
    timeout-minutes: 35

    steps:
      - name: Checkout repository
        uses: actions/checkout@v7

      - name: Setup pnpm
        uses: pnpm/action-setup@v6
        with:
          version: 9.15.4

      - name: Setup Node.js
        uses: actions/setup-node@v7
        with:
          node-version: 24
          cache: pnpm

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Install Playwright Chromium
        run: npx playwright install --with-deps chromium

      - name: Cache Storybook visual baseline archive
        uses: actions/cache@v6
        with:
          path: tests/storybook-visual/.cache
          key: storybook-visual-baseline-${{ runner.os }}-${{ hashFiles('tests/storybook-visual/baseline-manifest.json') }}

      - name: Download Storybook visual baseline
        run: pnpm storybook-visual:baseline download

      - name: Verify Storybook visual baseline
        run: pnpm storybook-visual:baseline verify

      - name: Build Storybook
        run: pnpm build-storybook

      - name: Run Storybook visual tests
        if: ${{ github.event.inputs.update_snapshots != 'true' }}
        run: npx playwright test --config tests/storybook-visual/playwright.config.ts

      - name: Generate updated snapshots for review
        if: ${{ github.event.inputs.update_snapshots == 'true' }}
        run: npx playwright test --config tests/storybook-visual/playwright.config.ts --update-snapshots

      - name: Pack updated baseline review bundle
        if: ${{ github.event.inputs.update_snapshots == 'true' }}
        run: pnpm storybook-visual:baseline pack

      - name: Upload Storybook visual report
        uses: actions/upload-artifact@v7
        if: always()
        with:
          name: storybook-visual-report-${{ github.run_id }}
          path: |
            tests/storybook-visual/playwright-report/
            tests/storybook-visual/test-results/
          retention-days: 30
          if-no-files-found: warn

      - name: Upload updated baseline review bundle
        uses: actions/upload-artifact@v7
        if: ${{ github.event.inputs.update_snapshots == 'true' }}
        with:
          name: storybook-visual-baseline-review-${{ github.run_id }}
          path: tests/storybook-visual/baseline-review/snapshots.tgz
          retention-days: 30
          if-no-files-found: error

  preview:
    name: Deploy selected branch Storybook
    if: github.event_name == 'workflow_dispatch' && inputs.deploy_preview
    permissions:
      contents: read
      id-token: write
    uses: ./.github/workflows/storybook-deploy.yml
    with:
      branch: ${{ inputs.branch }}