# Docker Validation: Validates Dockerfiles and builds representative images on PRs
#
# Flow:
#   PR → main       : Validates Dockerfiles + builds representative Docker images
#   Push → main     : Same validation (catches force-merges)
#
# The build job tests a representative subset of images that covers
# all shared packages without building all 40+ services.

name: Docker Validate

on:
  push:
    branches:
      - main
    paths:
      - '**/Dockerfile'
      - '**/package.json'
      - 'packages/**'
      - 'apps/**'
      - 'services/**'
      - 'pnpm-lock.yaml'
      - 'pnpm-workspace.yaml'
      - '.github/workflows/docker-validate.yml'
  pull_request:
    branches:
      - main
    paths:
      - '**/Dockerfile'
      - '**/package.json'
      - 'packages/**'
      - 'apps/**'
      - 'services/**'
      - 'pnpm-lock.yaml'
      - 'pnpm-workspace.yaml'
      - '.github/workflows/docker-validate.yml'

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  NODE_VERSION: '20'
  PNPM_VERSION: '9.15.0'

jobs:
  # ===========================================
  # Job 1: Validate Dockerfiles (fast, no Docker needed)
  # ===========================================
  validate-dockerfiles:
    name: Validate Dockerfiles
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup pnpm
        uses: pnpm/action-setup@v2
        with:
          version: ${{ env.PNPM_VERSION }}

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'pnpm'

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

      - name: Audit workspace dependencies
        run: pnpm audit:deps

      - name: Check Dockerfiles are up to date
        run: pnpm generate:dockerfiles -- --check

      - name: Validate Dockerfiles
        run: pnpm validate:dockerfiles

  # ===========================================
  # Job 2: Build representative Docker images
  # ===========================================
  # Builds a subset that covers all shared packages:
  #   - mana-auth: covers auth service (Hono + Bun)
  #   - todo-web: covers most shared-* web packages
  #   - zitare-web: covers content packages, shared-pwa
  #   - calendar-web: covers calendar shared packages
  #   - todo-backend: covers NestJS backend pattern + shared packages
  # ===========================================
  build-docker-images:
    name: Build ${{ matrix.service }}
    runs-on: ubuntu-latest
    needs: validate-dockerfiles
    timeout-minutes: 20
    strategy:
      fail-fast: false
      matrix:
        include:
          - service: mana-auth
            dockerfile: services/mana-auth/Dockerfile
            context: .
          - service: todo-backend
            dockerfile: apps/todo/apps/backend/Dockerfile
            context: .
          - service: todo-web
            dockerfile: apps/todo/apps/web/Dockerfile
            context: .
          - service: zitare-web
            dockerfile: apps/zitare/apps/web/Dockerfile
            context: .
          - service: calendar-web
            dockerfile: apps/calendar/apps/web/Dockerfile
            context: .
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build ${{ matrix.service }}
        uses: docker/build-push-action@v5
        with:
          context: ${{ matrix.context }}
          file: ${{ matrix.dockerfile }}
          push: false
          cache-from: type=gha,scope=${{ matrix.service }}
          cache-to: type=gha,scope=${{ matrix.service }},mode=max