sencho/.github/actions/start-app/action.yml

name: Start Sencho App
description: >
  Shared setup for integration jobs: installs deps, builds backend,
  starts backend + frontend dev servers, waits for readiness,
  and installs Playwright browsers.

inputs:
  jwt-secret:
    required: false
    default: 'ci-test-secret-key-not-for-production'
  compose-dir:
    required: false
    default: '/tmp/compose'
  port:
    required: false
    default: '1852'
  skip-backend-build:
    description: >
      When 'true', skip running `npm run build` in backend/ and assume the
      caller has already materialized backend/dist (e.g. via download-artifact
      from an upstream job that already built and verified it). Leave 'false'
      for standalone invocations that do not run in a job graph with a
      prior build step.
    required: false
    default: 'false'

runs:
  using: composite
  steps:
    - name: Setup Node.js
      uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
      with:
        node-version-file: '.node-version'
        cache: 'npm'
        cache-dependency-path: |
          package-lock.json
          backend/package-lock.json
          frontend/package-lock.json

    - name: Install root dependencies (Playwright)
      shell: bash
      run: npm ci

    - name: Install backend dependencies
      shell: bash
      run: npm ci
      working-directory: ./backend

    - name: Build backend
      if: inputs.skip-backend-build != 'true'
      shell: bash
      run: npm run build
      working-directory: ./backend

    - name: Install frontend dependencies
      shell: bash
      run: npm ci
      working-directory: ./frontend

    - name: Create compose directory and log dir
      shell: bash
      run: |
        mkdir -p ${{ inputs.compose-dir }}
        mkdir -p "${{ github.workspace }}/ci-logs"

    # Log files live under $GITHUB_WORKSPACE so actions/upload-artifact@v4+ can
    # include them alongside repo-relative paths like e2e/report/. Mixing those
    # with /tmp paths makes '/' the common root and v4+ strips the absolute
    # entries from the artifact. `stdbuf -oL -eL` forces line-buffered output
    # so a crash doesn't lose the final few hundred lines to block buffering.
    - name: Start backend
      shell: bash
      run: stdbuf -oL -eL node dist/index.js > "${{ github.workspace }}/ci-logs/backend.log" 2>&1 &
      working-directory: ./backend
      env:
        JWT_SECRET: ${{ inputs.jwt-secret }}
        COMPOSE_DIR: ${{ inputs.compose-dir }}
        PORT: ${{ inputs.port }}
        NODE_ENV: test

    - name: Start frontend dev server
      shell: bash
      run: stdbuf -oL -eL npm run dev > "${{ github.workspace }}/ci-logs/frontend.log" 2>&1 &
      working-directory: ./frontend

    - name: Wait for services to be ready
      shell: bash
      run: npx wait-on http://localhost:${{ inputs.port }}/api/health http://localhost:5173 --timeout 30000

    # Playwright bundles Chrome for Testing (~170MB) and FFmpeg. Downloading
    # them on every E2E run is the single largest cost in this composite:
    # observed ~4m15s cold vs ~10s warm when the path is cached. Cache the
    # download under a key pinned to the @playwright/test version so a
    # future bump invalidates automatically.
    - name: Read Playwright version
      id: playwright-version
      shell: bash
      run: |
        version=$(node -p "require('./package.json').devDependencies['@playwright/test'].replace(/^[\^~]/, '')")
        echo "version=$version" >> "$GITHUB_OUTPUT"

    - name: Cache Playwright browsers
      id: playwright-cache
      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
      with:
        path: ~/.cache/ms-playwright
        key: playwright-${{ runner.os }}-${{ steps.playwright-version.outputs.version }}

    # OS deps are apt packages under /var, which actions/cache does not
    # preserve, so they have to be reinstalled every run regardless of the
    # browser cache state. It is fast (~10s).
    - name: Install Playwright OS dependencies
      shell: bash
      run: npx playwright install-deps chromium

    - name: Install Playwright browsers
      if: steps.playwright-cache.outputs.cache-hit != 'true'
      shell: bash
      run: npx playwright install chromium