name: CI/CD

on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main]
  release:
    types: [published]

env:
  GO_VERSION: '1.23'
  NODE_VERSION: '20'
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  # ===========================================
  # Lint & Format
  # ===========================================
  lint:
    name: Lint
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version: ${{ env.GO_VERSION }}
          cache: true

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
          cache-dependency-path: web/package-lock.json

      - name: Install golangci-lint
        uses: golangci/golangci-lint-action@v6
        with:
          version: latest

      - name: Run Go linters
        run: |
          cd ${{ github.workspace }}
          golangci-lint run ./...

      - name: Install frontend dependencies
        run: |
          cd web
          npm ci

      - name: Run frontend linters
        run: |
          cd web
          npm run lint

      - name: Check formatting
        run: |
          cd web
          npm run format -- --check

  # ===========================================
  # Test
  # ===========================================
  test:
    name: Test
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:16-alpine
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
          POSTGRES_DB: go_first_test
        ports: 5432:5432
        options: >-
          --health-cmd "pg_isready -U postgres"
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

      redis:
        image: redis:7-alpine
        ports: 6379:6379
        options: >-
          --health-cmd "redis-cli ping"
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

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

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version: ${{ env.GO_VERSION }}
          cache: true

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
          cache-dependency-path: web/package-lock.json

      - name: Install Go dependencies
        run: go mod download

      - name: Run Go tests
        run: |
          go test -v -race -coverprofile=coverage.out ./...
          go tool cover -func=coverage.out

      - name: Upload Go coverage
        uses: codecov/codecov-action@v4
        with:
          files: coverage.out
          flags: backend

      - name: Install frontend dependencies
        run: |
          cd web
          npm ci

      - name: Run frontend tests
        run: |
          cd web
          npm test -- --run --coverage

      - name: Upload frontend coverage
        uses: codecov/codecov-action@v4
        with:
          files: web/coverage/lcov.info
          flags: frontend

  # ===========================================
  # Build
  # ===========================================
  build:
    name: Build
    runs-on: ubuntu-latest
    needs: [lint, test]
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version: ${{ env.GO_VERSION }}
          cache: true

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
          cache-dependency-path: web/package-lock.json

      - name: Build backend
        run: |
          CGO_ENABLED=0 go build -ldflags="-s -w" -o build/go-first ./cmd/server

      - name: Build frontend
        run: |
          cd web
          npm ci
          npm run build

      - name: Upload backend artifact
        uses: actions/upload-artifact@v4
        with:
          name: go-first-backend
          path: build/go-first
          retention-days: 7

      - name: Upload frontend artifact
        uses: actions/upload-artifact@v4
        with:
          name: go-first-frontend
          path: web/dist
          retention-days: 7

  # ===========================================
  # Docker Build & Push
  # ===========================================
  docker:
    name: Docker
    runs-on: ubuntu-latest
    needs: build
    if: github.event_name == 'push' || github.event_name == 'release'
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4

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

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

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

  # ===========================================
  # Deploy Staging
  # ===========================================
  deploy-staging:
    name: Deploy Staging
    runs-on: ubuntu-latest
    needs: docker
    if: github.ref == 'refs/heads/develop'
    environment: staging
    steps:
      - name: Deploy to staging
        run: |
          echo "Deploying to staging..."
          # Add your staging deployment commands here
          # Example: kubectl apply -k deploy/kubernetes/overlays/staging
          # Or: ssh deploy@staging-server "cd /opt/go-first && ./deploy/deploy.sh staging"

  # ===========================================
  # Deploy Production
  # ===========================================
  deploy-production:
    name: Deploy Production
    runs-on: ubuntu-latest
    needs: docker
    if: github.event_name == 'release'
    environment: production
    steps:
      - name: Deploy to production
        run: |
          echo "Deploying to production..."
          # Add your production deployment commands here
          # Example: kubectl apply -k deploy/kubernetes/overlays/production
          # Or: ssh deploy@production-server "cd /opt/go-first && ./deploy/deploy.sh production"

  # ===========================================
  # Security Scan
  # ===========================================
  security:
    name: Security Scan
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Run Gosec
        uses: securego/gosec@master
        with:
          args: './...'

      - name: Run Trivy
        uses: aquasecurity/trivy-action@master
        with:
          scan-type: 'fs'
          scan-ref: '.'
          format: 'sarif'
          output: 'trivy-results.sarif'

      - name: Upload Trivy results
        uses: github/codeql-action/upload-sarif@v3
        with:
          sarif_file: 'trivy-results.sarif'