name: CI / CD
run-name: "${{ github.event_name == 'pull_request' && format('PR #{0} — {1}', github.event.pull_request.number, github.event.pull_request.title) || format('merge to {0} by @{1}', github.ref_name, github.actor) }}"

on:
  push:
    branches: [main]
  pull_request:

jobs:
  # ── Unit Tests ─────────────────────────────────────────────────────────────
  unit-tests:
    name: Unit Tests
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up .NET
        uses: actions/setup-dotnet@v4
        with:
          dotnet-version: '10.0.x'

      - name: Run unit tests
        run: dotnet test src/backend/tests/unit/Randall.Domain.UnitTests.csproj --logger "console;verbosity=normal"

  # ── E2E Tests ──────────────────────────────────────────────────────────────
  e2e:
    name: E2E Tests
    runs-on: ubuntu-latest
    needs: unit-tests

    steps:
      - name: Checkout
        uses: actions/checkout@v4

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

      - name: Build images
        run: docker compose -f cicd/docker/docker-compose.yml build

      - name: Start services
        run: docker compose -f cicd/docker/docker-compose.yml up -d
        env:
          JWT_KEY: ${{ secrets.JWT_KEY }}

      - name: Wait for frontend to be ready
        run: |
          echo "Waiting for services to become healthy..."
          timeout 120 bash -c \
            'until curl -sf http://localhost > /dev/null; do echo "  still waiting..."; sleep 3; done'
          echo "Services are ready."

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '22'
          cache: 'npm'
          cache-dependency-path: tests/e2e/package-lock.json

      - name: Install dependencies
        working-directory: tests/e2e
        run: npm ci

      - name: Install Playwright browsers
        working-directory: tests/e2e
        run: npx playwright install --with-deps chromium

      - name: Run E2E tests
        working-directory: tests/e2e
        env:
          BASE_URL: http://localhost
          CI: 'true'
        run: npx playwright test

      - name: Upload Playwright report
        uses: actions/upload-artifact@v4
        if: always()
        with:
          name: playwright-report
          path: tests/e2e/playwright-report/
          retention-days: 30

      - name: Dump Docker logs on failure
        if: failure()
        run: docker compose -f cicd/docker/docker-compose.yml logs

      - name: Stop services
        if: always()
        run: docker compose -f cicd/docker/docker-compose.yml down -v

  # ── Deploy ─────────────────────────────────────────────────────────────────
  deploy:
    name: Deploy
    runs-on: ubuntu-latest
    needs: e2e
    # Only deploy on merges to main, not on pull requests
    if: github.ref == 'refs/heads/main' && github.event_name == 'push'

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Configure SSH
        run: |
          mkdir -p ~/.ssh
          echo "${{ secrets.DEPLOY_SSH_KEY }}" > ~/.ssh/deploy_key
          chmod 600 ~/.ssh/deploy_key
          ssh-keyscan -H "${{ secrets.DEPLOY_HOST }}" >> ~/.ssh/known_hosts

      - name: Sync source to VM
        run: |
          rsync -az --delete \
            -e "ssh -i ~/.ssh/deploy_key" \
            --exclude='.git/' \
            --exclude='.github/' \
            --exclude='tests/' \
            --exclude='src/frontend/node_modules/' \
            --exclude='src/frontend/dist/' \
            --exclude='src/backend/**/bin/' \
            --exclude='src/backend/**/obj/' \
            --exclude='src/backend/**/*.db' \
            --exclude='src/backend/**/*.db-shm' \
            --exclude='src/backend/**/*.db-wal' \
            ./ ${{ secrets.DEPLOY_USER }}@${{ secrets.DEPLOY_HOST }}:${{ secrets.DEPLOY_PATH }}/

      - name: Deploy with Docker Compose
        uses: appleboy/ssh-action@v1.0.3
        env:
          JWT_KEY: ${{ secrets.JWT_KEY }}
          PORT: ${{ secrets.DEPLOY_PORT || '80' }}
        with:
          host: ${{ secrets.DEPLOY_HOST }}
          username: ${{ secrets.DEPLOY_USER }}
          key: ${{ secrets.DEPLOY_SSH_KEY }}
          envs: JWT_KEY,PORT
          script: |
            set -e
            cd "${{ secrets.DEPLOY_PATH }}"

            echo "Building backend..."
            DOCKER_BUILDKIT=0 docker compose -f cicd/docker/docker-compose.yml build backend

            echo "Building frontend..."
            DOCKER_BUILDKIT=0 docker compose -f cicd/docker/docker-compose.yml build frontend

            echo "Starting services..."
            docker compose -f cicd/docker/docker-compose.yml up -d

            echo "Removing unused images..."
            docker image prune -f

            echo "Running containers:"
            docker compose -f cicd/docker/docker-compose.yml ps