name: Build and Release

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  build:
    name: Build multi-arch Raspberry Pi binaries
    runs-on: ubuntu-latest

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

      # --------------------------------------------------
      # Go setup
      # --------------------------------------------------
      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version: "1.22"

      # --------------------------------------------------
      # Build binaries
      # --------------------------------------------------
      - name: Build for ARMv6 (Pi Zero / Pi 1)
        run: |
          GOOS=linux GOARCH=arm GOARM=6 \
          go build -ldflags="-s -w" -o wol-server-armv6

      - name: Build for ARM64 (Pi Zero 2 / Pi 3 / Pi 4 / Pi 5)
        run: |
          GOOS=linux GOARCH=arm64 \
          go build -ldflags="-s -w" -o wol-server-arm64

      # --------------------------------------------------
      # systemd service (portable, no hardcoded user)
      # --------------------------------------------------
      - name: Create systemd service file
        run: |
          cat > wol-server.service << 'EOF'
          [Unit]
          Description=WOL Server Go Application
          After=network.target

          [Service]
          Type=simple
          User=loke
          WorkingDirectory=/home/loke/wol-server
          ExecStart=/home/loke/wol-server/wol-server
          Restart=always
          RestartSec=3

          [Install]
          WantedBy=multi-user.target
          EOF

      # --------------------------------------------------
      # Install script (auto-detect architecture)
      # --------------------------------------------------
      - name: Create install script
        run: |
          cat > install.sh << 'EOF'
          #!/bin/bash
          set -e

          INSTALL_DIR="$HOME/wol-server"

          echo "Creating installation directory..."
          mkdir -p "$INSTALL_DIR/templates"

          ARCH=$(uname -m)
          case "$ARCH" in
            armv6l|armv7l)
              BIN="wol-server-armv6"
              ;;
            aarch64)
              BIN="wol-server-arm64"
              ;;
            *)
              echo "Unsupported architecture: $ARCH"
              exit 1
              ;;
          esac

          echo "Detected architecture: $ARCH"
          echo "Using binary: $BIN"

          cp "$BIN" "$INSTALL_DIR/wol-server"
          chmod +x "$INSTALL_DIR/wol-server"

          echo "Installing templates..."
          cp -r templates/* "$INSTALL_DIR/templates/"

          echo "Installing systemd service..."
          sudo cp wol-server.service /etc/systemd/system/
          sudo systemctl daemon-reload
          sudo systemctl enable wol-server

          echo "Installing dependencies..."
          sudo apt-get update -qq
          sudo apt-get install -y wakeonlan sshpass

          echo "Starting service..."
          sudo systemctl restart wol-server

          echo "==========================================="
          echo "WOL Server installed successfully!"
          echo "URL: http://$(hostname -I | awk '{print $1}'):8080"
          echo "==========================================="
          EOF

          chmod +x install.sh

      # --------------------------------------------------
      # Package
      # --------------------------------------------------
      - name: Create release package
        run: |
          mkdir -p package
          cp wol-server-armv6 package/
          cp wol-server-arm64 package/
          cp wol-server.service package/
          cp install.sh package/
          cp -r templates package/

          tar -czf wol-server.tar.gz -C package .

      # --------------------------------------------------
      # GitHub Release
      # --------------------------------------------------
      - name: Create GitHub Release
        uses: softprops/action-gh-release@v1
        if: github.ref == 'refs/heads/main'
        with:
          tag_name: v${{ github.run_number }}
          name: Release v${{ github.run_number }}
          files: |
            wol-server.tar.gz
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}