name: Test & Deploy

on:
  push:
    branches:
      - master
      - production
    paths:
      - 'api/**'
      - '.github/workflows/deploy.yml'
  pull_request:
    paths:
      - 'api/**'
      - '.github/workflows/deploy.yml'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  test:
    name: Run test suite
    runs-on: ubuntu-latest

    services:
      postgres:
        image: postgres:17-alpine
        env:
          POSTGRES_USER: user
          POSTGRES_PASSWORD: password
          POSTGRES_DB: postgres
        options: >-
          --health-cmd "pg_isready -U user"
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
        ports:
          - 5432:5432

    defaults:
      run:
        working-directory: api

    env:
      DATABASE_URL: postgres://user:password@localhost:5432/orbit_test
      NODE_ENV: test
      JWT_SECRET: test-secret-key
      FRONTEND_URL: http://localhost:8081

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: '24'
          cache: 'npm'
          cache-dependency-path: api/package-lock.json

      - name: Install dependencies
        run: npm ci

      - name: Set up test database
        run: |
          node scripts/create-test-db.mjs
          npx prisma generate
          npx prisma db push

      - name: Run tests
        run: npx vitest run

  build-and-push:
    name: Build & push image
    needs: test
    if: github.event_name == 'push'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    outputs:
      image_tag: ${{ steps.meta.outputs.version }}

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

      - name: Log in to GHCR
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GHCR_TOKEN }}

      - name: Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            # main branch => tag "latest"
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/master' }}
            # production branch => tag "production"
            # type=raw,value=production,enable=${{ github.ref == 'refs/heads/production' }}
            # always tag with short SHA for traceability
            type=sha,prefix=,format=short

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: ./api
          file: ./api/Dockerfile.production
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

  deploy-production:
    name: Deploy to production
    needs: build-and-push
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/master'
    environment: production

    steps:
      - name: Deploy via SSH
        uses: appleboy/ssh-action@v1
        with:
          host: ${{ secrets.VPS_HOST }}
          username: ${{ secrets.VPS_USER }}
          key: ${{ secrets.VPS_SSH_KEY }}
          script: |
            set -e
            cd /srv/app/production

            docker pull ghcr.io/${{ github.repository }}:latest

            sed -i "s/^IMAGE_TAG=.*/IMAGE_TAG=latest/" .env

            docker compose up -d --no-deps --force-recreate api

            # old image layers pile up across deploys; keep roughly the last week
            docker image prune -af --filter "until=168h" >/dev/null 2>&1 || true

            sleep 5
            docker compose logs --tail=50 api