name: Build, Test and Deploy

on:
  push:
    branches: [main, int, dev]

concurrency:
  group: print-calculator-${{ gitea.ref }}
  cancel-in-progress: true

jobs:
  test-backend:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      # Evito actions/setup-python (spesso fragile su act_runner)
      - name: Install Python deps + run tests
        shell: bash
        run: |
          apt-get update
          apt-get install -y --no-install-recommends python3 python3-pip
          python3 -m pip install --upgrade pip
          python3 -m pip install -r backend/requirements.txt
          python3 -m pip install pytest httpx
          export PYTHONPATH="${PYTHONPATH}:$(pwd)/backend"
          pytest backend/tests

  build-and-push:
    needs: test-backend
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set TAG
        shell: bash
        run: |
          if [[ "${{ gitea.ref }}" == "refs/heads/main" ]]; then
            echo "TAG=prod" >> "$GITHUB_ENV"
          elif [[ "${{ gitea.ref }}" == "refs/heads/int" ]]; then
            echo "TAG=int" >> "$GITHUB_ENV"
          else
            echo "TAG=dev" >> "$GITHUB_ENV"
          fi

      - name: Ensure docker CLI exists
        shell: bash
        run: |
          if ! command -v docker >/dev/null 2>&1; then
            apt-get update
            apt-get install -y --no-install-recommends docker.io
          fi
          docker version

      - name: Login to Gitea Registry
        shell: bash
        run: |
          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login "${{ secrets.REGISTRY_URL }}" \
            -u "${{ secrets.REGISTRY_USER }}" --password-stdin

      - name: Build & Push Backend
        shell: bash
        run: |
          BACKEND_IMAGE="${{ secrets.REGISTRY_URL }}/${{ gitea.repository_owner }}/print-calculator-backend:${{ env.TAG }}"
          docker build -t "$BACKEND_IMAGE" ./backend
          docker push "$BACKEND_IMAGE"

      - name: Build & Push Frontend
        shell: bash
        run: |
          FRONTEND_IMAGE="${{ secrets.REGISTRY_URL }}/${{ gitea.repository_owner }}/print-calculator-frontend:${{ env.TAG }}"
          docker build -t "$FRONTEND_IMAGE" ./frontend
          docker push "$FRONTEND_IMAGE"

  deploy:
    needs: build-and-push
    runs-on: ubuntu-latest
    steps:
      - name: Checkout (serve per avere compose + env nel workspace)
        uses: actions/checkout@v4

      - name: Set ENV
        shell: bash
        run: |
          if [[ "${{ gitea.ref }}" == "refs/heads/main" ]]; then
            echo "ENV=prod" >> "$GITHUB_ENV"
          elif [[ "${{ gitea.ref }}" == "refs/heads/int" ]]; then
            echo "ENV=int" >> "$GITHUB_ENV"
          else
            echo "ENV=dev" >> "$GITHUB_ENV"
          fi

      - name: Create Remote Directory
        uses: appleboy/ssh-action@v0.1.10
        with:
          host: ${{ secrets.SERVER_HOST }}
          username: ${{ secrets.SERVER_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          script: mkdir -p /mnt/user/appdata/print-calculator/${{ env.ENV }}/

      - name: Copy Compose File to Server
        uses: appleboy/scp-action@v0.1.4
        with:
          host: ${{ secrets.SERVER_HOST }}
          username: ${{ secrets.SERVER_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          source: "docker-compose.deploy.yml"
          target: "/mnt/user/appdata/print-calculator/${{ env.ENV }}/"

      - name: Copy Env File to Server
        uses: appleboy/scp-action@v0.1.4
        with:
          host: ${{ secrets.SERVER_HOST }}
          username: ${{ secrets.SERVER_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          source: "deploy/envs/${{ env.ENV }}.env"
          target: "/mnt/user/appdata/print-calculator/${{ env.ENV }}/"

      - name: Execute Remote Deployment
        uses: appleboy/ssh-action@v0.1.10
        with:
          host: ${{ secrets.SERVER_HOST }}
          username: ${{ secrets.SERVER_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          script: |
            set -e
            cd /mnt/user/appdata/print-calculator/${{ env.ENV }}/

            # il file copiato si chiama "dev.env"/"int.env"/"prod.env"
            mv "${{ env.ENV }}.env" .env

            echo "${{ secrets.REGISTRY_TOKEN }}" | docker login "${{ secrets.REGISTRY_URL }}" \
              -u "${{ secrets.REGISTRY_USER }}" --password-stdin

            docker compose --env-file .env -f docker-compose.deploy.yml pull
            docker compose --env-file .env -f docker-compose.deploy.yml up -d --remove-orphans