deploy-backend.yml

name: CD — Build, Push, Deploy Backend

on:
  push:
    branches: ["main", "production"]
    paths:
      - "backend/**"
      - ".github/workflows/deploy-backend.yml"
      - "!**/**/*.md"
  workflow_dispatch:

# ✅ 1. WAJIB DEFINISIKAN ENV DI ROOT AGAR TIDAK NYASAR KE DOCKER HUB!
env:
  REGISTRY: ghcr.io
  # Menggunakan lowercase otomatis untuk menghindari error GHCR uppercase
  IMAGE_NAME: ${{ github.repository }}-backend

jobs:
  # ==========================================================
  # JOB 1: CONTINUOUS INTEGRATION (TYPECHECK & TEST)
  # ==========================================================
  build-and-test:
    name: 1. Build & Test (Bun)
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: ./backend

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

      - name: Setup Bun environment
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: latest

      - name: Install dependencies
        run: bun install --frozen-lockfile

      - name: Typecheck & Compile (Build)
        run: bun run build

      - name: Run Unit Tests
        run: bun test

  # ==========================================================
  # JOB 2: BUILD & PUSH IMAGE KE GHCR
  # ==========================================================
  build-and-push-ghcr:
    name: 2. Build & Push Docker Image to GHCR
    needs: build-and-test # ✅ KUNCI: Harus nunggu Job 1 sukses!
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write # ✅ KUNCI: Izin push ke GHCR

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

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

      - name: Log in to GitHub Container Registry (GHCR)
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract Docker metadata (tags, labels)
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=sha,format=short
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push Backend Docker image to GHCR
        uses: docker/build-push-action@v6
        with:
          context: ./backend
          file: ./backend/Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

  # ==========================================================
  # JOB 3: DEPLOY KE SERVER VPS VIA SSH
  # ==========================================================
  deploy-to-server:
    name: 3. Deploy to Server & Run Migrations
    needs: build-and-push-ghcr
    runs-on: ubuntu-latest
    environment: staging

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

      - name: Copy Backend Docker Compose file via SCP
        uses: appleboy/scp-action@v0.1.7
        with:
          host: ${{ secrets.SERVER_HOST }}
          username: ${{ secrets.SERVER_USER }}
          port: ${{ secrets.SERVER_PORT || '22' }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          source: "backend/docker-compose.yml"
          target: "${{ vars.DEPLOY_PATH_BACKEND || secrets.DEPLOY_PATH_BACKEND }}"
          strip_components: 1

      - name: Deploy & Execute DB Migrations via SSH
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ secrets.SERVER_HOST }}
          username: ${{ secrets.SERVER_USER }}
          port: ${{ secrets.SERVER_PORT || '22' }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          command_timeout: 30m
          script_stop: true
          script: |
            echo "=========================================================="
            echo " [1/5] Masuk ke direktori aplikasi"
            echo "=========================================================="
            DEPLOY_DIR="${{ vars.DEPLOY_PATH_BACKEND || secrets.DEPLOY_PATH_BACKEND }}"
            echo "Directori target deployment: $DEPLOY_DIR"
            mkdir -p "$DEPLOY_DIR"
            cd "$DEPLOY_DIR" || exit 1

            echo "=========================================================="
            echo " [2/5] Menulis file .env production"
            echo "=========================================================="
            # Menulis file .env di level direktori yang sama dengan docker-compose.yml
            echo "${{ secrets.ENV_PROD_BACKEND }}" | base64 -d > .env
            chmod 600 .env

            echo "=========================================================="
            echo " [3/5] Mengunduh Docker Image terbaru dari GHCR"
            echo "=========================================================="
            # Ubah nama repositori ke lowercase via bash syntax (GHCR menolak uppercase)
            REPO_LOWER=$(echo "${{ github.repository }}-backend" | tr '[:upper:]' '[:lower:]')
            IMAGE_TARGET="ghcr.io/${REPO_LOWER}:latest"

            echo "Pulling image: $IMAGE_TARGET"
            docker pull "$IMAGE_TARGET"

            echo "=========================================================="
            echo " [4/5] Menjalankan Database Migrations via Drizzle ORM"
            echo "=========================================================="
            docker compose run --rm backend bun run db:migrate:prod

            echo "=========================================================="
            echo " [5/5] Merestart Container Aplikasi Backend"
            echo "=========================================================="
            docker compose up -d --force-recreate --remove-orphans
            docker image prune -f
            echo "✅ Deployment dan Migrasi Database selesai!"