name: Build and Deploy API Server & Frontend

on:
  push:
    branches:
      - main
      - develop
  pull_request:
    branches:
      - main

env:
  ARTIFACT_DIR: /opt/api-artifacts
  GO_VERSION: '1.24'
  NODE_VERSION: '20'

jobs:
  build-backend:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

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

      - name: Get commit info
        id: commit
        run: |
          echo "sha=$(git rev-parse HEAD)" >> $GITHUB_OUTPUT
          echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
          echo "branch=$(git rev-parse --abbrev-ref HEAD)" >> $GITHUB_OUTPUT
          echo "date=$(date -u +%Y-%m-%dT%H:%M:%SZ)" >> $GITHUB_OUTPUT
          echo "github output is $GITHUB_OUTPUT"

      - name: Download dependencies
        working-directory: ./backend
        run: go mod download
 
      # takes too long, investigate why it takes so long
      # - name: Run tests
      #   working-directory: ./backend
      #   run: go test -v ./...

      - name: Build binary
        working-directory: ./backend
        run: |
          CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
            -ldflags="-s -w -X main.Version=${{ steps.commit.outputs.short_sha }} -X main.BuildTime=${{ steps.commit.outputs.date }}" \
            -o api-server \
            .

      - name: Create build metadata
        run: |
          cat > build-info.json << EOF
          {
            "commit": "${{ steps.commit.outputs.sha }}",
            "short_commit": "${{ steps.commit.outputs.short_sha }}",
            "branch": "${{ steps.commit.outputs.branch }}",
            "build_date": "${{ steps.commit.outputs.date }}",
            "go_version": "${{ env.GO_VERSION }}"
          }
          EOF

      - name: Package artifact
        run: |
          mkdir -p artifact-package
          cp backend/api-server artifact-package/
          cp -r backend/migrations artifact-package/
          cp build-info.json artifact-package/
          tar -czf api-server-${{ steps.commit.outputs.sha }}.tar.gz -C artifact-package .

      - name: Upload artifact
        uses: actions/upload-artifact@v3
        with:
          name: api-server-${{ steps.commit.outputs.sha }}
          path: api-server-${{ steps.commit.outputs.sha }}.tar.gz
          retention-days: 30

  build-frontend:
    runs-on: ubuntu-latest

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

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}

      - name: Get commit info
        id: commit
        run: |
          echo "sha=$(git rev-parse HEAD)" >> $GITHUB_OUTPUT
          echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT

      - name: Install dependencies
        working-directory: ./frontend
        run: npm ci

      - name: Build frontend
        working-directory: ./frontend
        env:
          VITE_API_URL: https://api.nitrokite.com
        run: npm run build

      - name: Create frontend artifact
        run: |
          tar -czf frontend-${{ steps.commit.outputs.sha }}.tar.gz -C frontend/dist .

      - name: Upload frontend artifact
        uses: actions/upload-artifact@v3
        with:
          name: frontend-${{ steps.commit.outputs.sha }}
          path: frontend-${{ steps.commit.outputs.sha }}.tar.gz
          retention-days: 30

  deploy:
    needs: [build-backend, build-frontend]
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main' && github.event_name == 'push'

    steps:
      - name: Checkout deployment scripts
        uses: actions/checkout@v4
        with:
          sparse-checkout: |
            deployment/scripts

      - name: Get commit SHA
        id: commit
        run: echo "sha=$(git rev-parse HEAD)" >> $GITHUB_OUTPUT

      - name: Download backend artifact
        uses: actions/download-artifact@v3
        with:
          name: api-server-${{ steps.commit.outputs.sha }}

      - name: Download frontend artifact
        uses: actions/download-artifact@v3
        with:
          name: frontend-${{ steps.commit.outputs.sha }}

      - name: Extract and deploy backend
        run: |
          BUILD_DIR="${{ env.ARTIFACT_DIR }}/builds/${{ steps.commit.outputs.sha }}"
          mkdir -p "$BUILD_DIR"

          tar -xzf api-server-${{ steps.commit.outputs.sha }}.tar.gz -C "$BUILD_DIR"

          chmod +x "$BUILD_DIR/api-server"

          if [ -f "${{ env.ARTIFACT_DIR }}/config/.env.production" ]; then
            cp "${{ env.ARTIFACT_DIR }}/config/.env.production" "$BUILD_DIR/.env.production"
          fi

      - name: Extract and deploy frontend
        run: |
          FRONTEND_STAGING_DIR="/opt/frontend-artifacts/staging/${{ steps.commit.outputs.sha }}"
          mkdir -p "$FRONTEND_STAGING_DIR"
          tar -xzf frontend-${{ steps.commit.outputs.sha }}.tar.gz -C "$FRONTEND_STAGING_DIR"
          chown -R www-data:www-data "$FRONTEND_STAGING_DIR"

      - name: Run deployment script
        run: |
          cd ${{ env.ARTIFACT_DIR }}/scripts
          ./deploy.sh ${{ steps.commit.outputs.sha }}
        env:
          DATABASE_URL: ${{ secrets.DATABASE_URL }}
          AUTO_MIGRATE: "false"
          PORT: "8080"

      - name: Notify deployment status
        if: always()
        run: |
          echo "Deployment staged successfully: ${{ steps.commit.outputs.sha }}"
          echo "Backend staged at: /opt/api-artifacts/builds/${{ steps.commit.outputs.sha }}"
          echo "Frontend staged at: /opt/frontend-artifacts/staging/${{ steps.commit.outputs.sha }}"
          echo ""
          echo "To promote to production, SSH to server and run:"
          echo "  sudo /opt/api-artifacts/scripts/promote.sh ${{ steps.commit.outputs.sha }}"