name: CI

on:
  pull_request:
  push:
    branches:
      - main

jobs:
  infra:
    name: Infra (Compose + Scripts)
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Validate Docker Compose config
        run: docker compose -f infra/docker-compose.yml config -q

      - name: Validate Docker Compose with .env.example
        run: docker compose -f infra/docker-compose.yml --env-file .env.example config -q

      - name: Validate startup scripts
        run: |
          bash -n start-unified.sh
          bash -n start.sh

      - name: Run startup preflight tests
        run: bash scripts/test-start-unified-preflight.sh

  backend:
    name: Backend (Go)
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: app/backend
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version-file: app/backend/go.mod
          cache: true

      - name: Run backend tests
        run: go test ./...

  frontend:
    name: Frontend (React)
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: app/frontend
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: "22"
          cache: npm
          cache-dependency-path: app/frontend/package-lock.json

      - name: Install dependencies
        run: npm ci

      - name: Lint
        run: npm run lint

      - name: Build (typecheck + bundle)
        run: npm run build:check

      - name: Test
        run: npm test

  smoke:
    name: Compose boot smoke
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Boot stack
        run: |
          docker compose -f infra/docker-compose.yml up -d --build postgres redis backend frontend traefik

      - name: Wait for backend health
        run: |
          for i in $(seq 1 60); do
            if curl -sf http://localhost:8082/health; then exit 0; fi
            sleep 5
          done
          docker compose -f infra/docker-compose.yml logs --tail 50 backend
          exit 1

      - name: Check frontend responds
        run: curl -sf http://localhost:3000/ -o /dev/null

      - name: Teardown
        if: always()
        run: docker compose -f infra/docker-compose.yml down -v

  images:
    name: Publish images to GHCR
    runs-on: ubuntu-latest
    needs: [backend, frontend, smoke]
    if: startsWith(github.ref, 'refs/tags/v')
    permissions:
      packages: write
      contents: read
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Login to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push backend
        uses: docker/build-push-action@v6
        with:
          context: app/backend
          push: true
          tags: ghcr.io/${{ github.repository }}-backend:${{ github.ref_name }},ghcr.io/${{ github.repository }}-backend:latest

      - name: Build and push frontend
        uses: docker/build-push-action@v6
        with:
          context: app/frontend
          push: true
          tags: ghcr.io/${{ github.repository }}-frontend:${{ github.ref_name }},ghcr.io/${{ github.repository }}-frontend:latest