name: Build ZeroTier One for Alpine Linux

on:
  # Run on workflow dispatch (manual trigger)
  workflow_dispatch:
    inputs:
      zerotier_version:
        description: 'ZeroTier version to build (leave empty for latest)'
        required: false
        default: ''
        type: string

  # Run every Friday at 8 AM UTC
  schedule:
  - cron: '0 8 * * 5'
  # Run when this workflow file is modified
  push:
    paths:
    - '.forgejo/workflows/build-zerotier-alpine.yml'

jobs:
  build-zerotier:
    runs-on: [ "docker", "amd64" ]
    container:
      image: alpine:latest

    steps:
    - name: Setup Alpine environment and install dependencies
      run: |
        # Update package manager
        apk update

        # Install build dependencies
        apk add \
          git \
          make \
          gcc \
          g++ \
          linux-headers \
          openssl-dev \
          curl \
          tar \
          gzip \
          file \
          pkgconfig \
          musl-dev \
          nodejs \
          npm

        # Install Rust and Cargo
        curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
        source "$HOME/.cargo/env"

        # Add Rust to PATH for subsequent steps
        echo "$HOME/.cargo/bin" >> $GITHUB_PATH

        # Enable TUN module (if available in container)
        modprobe tun || echo "TUN module not available in container (expected)"

    - name: Checkout workflow repository
      uses: actions/checkout@v4
      with:
        fetch-depth: 1

    - name: Clone ZeroTier One repository
      run: |
        # Determine version to build
        if [ -n "${{ github.event.inputs.zerotier_version }}" ]; then
          VERSION="${{ github.event.inputs.zerotier_version }}"
          echo "Building specified version: $VERSION"
          git clone --depth 1 --branch "$VERSION" https://github.com/zerotier/ZeroTierOne.git zerotier-src
        else
          echo "Building latest version"
          git clone --depth 1 https://github.com/zerotier/ZeroTierOne.git zerotier-src
        fi

        cd zerotier-src

        # Get the actual version/commit info
        ZEROTIER_VERSION=$(git describe --tags --always)
        echo "ZEROTIER_VERSION=$ZEROTIER_VERSION" >> $GITHUB_ENV
        echo "Building ZeroTier version: $ZEROTIER_VERSION"

    - name: Build ZeroTier One
      run: |
        cd zerotier-src

        # Source Rust environment
        source "$HOME/.cargo/env"

        # Build ZeroTier
        echo "Starting build process..."
        make clean || true
        make -j$(nproc)

        # Verify build succeeded
        if [ -f "zerotier-one" ]; then
          echo "Build successful!"
          ./zerotier-one -v
        else
          echo "Build failed - zerotier-one binary not found"
          exit 1
        fi

    - name: Create package structure
      run: |
        cd zerotier-src

        # Create package directory structure
        PKG_DIR="../zerotier-one-alpine"
        mkdir -p "$PKG_DIR/usr/sbin"
        mkdir -p "$PKG_DIR/usr/bin"
        mkdir -p "$PKG_DIR/etc/init.d"
        mkdir -p "$PKG_DIR/var/lib/zerotier-one"
        mkdir -p "$PKG_DIR/usr/share/doc/zerotier-one"

        # Copy binaries
        cp zerotier-one "$PKG_DIR/usr/sbin/"
        ln -sf ../sbin/zerotier-one "$PKG_DIR/usr/bin/zerotier-cli"

        # Create OpenRC init script
        cat > "$PKG_DIR/etc/init.d/zerotier-one" << 'EOF'
        #!/sbin/openrc-run

        depend() {
            after network-online
            want cgroups
        }

        supervisor=supervise-daemon
        name=zerotier-one
        command="/usr/sbin/zerotier-one"
        command_args=" >>/var/log/zerotier-one.log 2>&1"

        output_log=/var/log/zerotier-one.log
        error_log=/var/log/zerotier-one.log

        pidfile="/var/run/zerotier-one.pid"
        respawn_delay=5
        respawn_max=0
        EOF

        # Make init script executable
        chmod +x "$PKG_DIR/etc/init.d/zerotier-one"

        # Copy documentation
        cp README.md "$PKG_DIR/usr/share/doc/zerotier-one/" || true
        cp LICENSE.txt "$PKG_DIR/usr/share/doc/zerotier-one/" || true

        # Create package info
        cat > "$PKG_DIR/PACKAGE_INFO" << EOF
        Package: zerotier-one-alpine
        Version: $ZEROTIER_VERSION
        Architecture: $(uname -m)
        Built-Date: $(date -u +"%Y-%m-%dT%H:%M:%SZ")
        Built-On: Alpine Linux $(cat /etc/alpine-release)
        Description: ZeroTier One - Software Defined Networking
        Homepage: https://zerotier.com
        Source: https://github.com/zerotier/ZeroTierOne
        EOF

        echo "Package structure created in $PKG_DIR"

    - name: Create package archive
      run: |
        ARCH=$(uname -m)
        PACKAGE_NAME="zerotier-one-${ZEROTIER_VERSION}-alpine-${ARCH}"

        # Create tarball
        tar -czf "${PACKAGE_NAME}.tar.gz" -C . zerotier-one-alpine

        # Create checksum
        sha256sum "${PACKAGE_NAME}.tar.gz" > "${PACKAGE_NAME}.tar.gz.sha256"

        # Store package info for upload
        echo "PACKAGE_NAME=$PACKAGE_NAME" >> $GITHUB_ENV
        echo "PACKAGE_FILE=${PACKAGE_NAME}.tar.gz" >> $GITHUB_ENV

        # Show package contents
        echo "Package contents:"
        tar -tzf "${PACKAGE_NAME}.tar.gz" | head -20

        # Show file sizes
        ls -lh "${PACKAGE_NAME}.tar.gz"*

    - name: Upload package to Forgejo
      env:
        FORGEJO_TOKEN: ${{ secrets.FORGEJO_TOKEN }}
        FORGEJO_URL: ${{ vars.FORGEJO_URL || 'https://forgejo.example.com' }}
      run: |
        if [ -z "$FORGEJO_TOKEN" ]; then
          echo "ERROR: FORGEJO_TOKEN secret not set!"
          echo "Please set the FORGEJO_TOKEN secret with your Forgejo API token."
          exit 1
        fi

        REPO_OWNER="${{ github.repository_owner }}"
        REPO_NAME="${{ github.event.repository.name }}"

        echo "Uploading package to Forgejo packages..."
        echo "Repository: $REPO_OWNER/$REPO_NAME"
        echo "Package: $PACKAGE_FILE"

        # Upload the package file
        curl -X PUT \
          -H "Authorization: token $FORGEJO_TOKEN" \
          -H "Content-Type: application/gzip" \
          --data-binary "@$PACKAGE_FILE" \
          "$FORGEJO_URL/api/packages/$REPO_OWNER/generic/zerotier-one-alpine/$ZEROTIER_VERSION/$PACKAGE_FILE"

        # Upload the checksum file
        curl -X PUT \
          -H "Authorization: token $FORGEJO_TOKEN" \
          -H "Content-Type: text/plain" \
          --data-binary "@$PACKAGE_FILE.sha256" \
          "$FORGEJO_URL/api/packages/$REPO_OWNER/generic/zerotier-one-alpine/$ZEROTIER_VERSION/$PACKAGE_FILE.sha256"

        echo "Package upload completed!"
        echo "Package URL: $FORGEJO_URL/api/packages/$REPO_OWNER/generic/zerotier-one-alpine/$ZEROTIER_VERSION/$PACKAGE_FILE"

    - name: Create release notes
      run: |
        cat > release-notes.md << EOF
        # ZeroTier One Alpine Linux Build

        **Version:** \`$ZEROTIER_VERSION\`  
        **Architecture:** \`$(uname -m)\`  
        **Built on:** \`$(date -u +"%Y-%m-%d %H:%M:%S UTC")\`  
        **Alpine Version:** \`$(cat /etc/alpine-release)\`

        ## Installation Instructions

        1. Download the package:
           \`\`\`bash
           wget "$FORGEJO_URL/api/packages/${{ github.repository_owner }}/generic/zerotier-one-alpine/$ZEROTIER_VERSION/$PACKAGE_FILE"
           \`\`\`

        2. Verify checksum (optional):
           \`\`\`bash
           wget "$FORGEJO_URL/api/packages/${{ github.repository_owner }}/generic/zerotier-one-alpine/$ZEROTIER_VERSION/$PACKAGE_FILE.sha256"
           sha256sum -c "$PACKAGE_FILE.sha256"
           \`\`\`

        3. Extract and install:
           \`\`\`bash
           tar -xzf "$PACKAGE_FILE"
           sudo cp -r zerotier-one-alpine/* /
           sudo chmod +x /etc/init.d/zerotier-one
           sudo rc-update add zerotier-one default
           sudo rc-service zerotier-one start
           \`\`\`

        4. Check status:
           \`\`\`bash
           sudo rc-service zerotier-one status
           zerotier-cli status
           \`\`\`

        ## Package Contents

        - \`/usr/sbin/zerotier-one\` - Main ZeroTier daemon
        - \`/usr/bin/zerotier-cli\` - Command line interface (symlink)
        - \`/etc/init.d/zerotier-one\` - OpenRC init script
        - \`/usr/share/doc/zerotier-one/\` - Documentation

        Built from source: https://github.com/zerotier/ZeroTierOne
        EOF

        echo "Release notes created:"
        cat release-notes.md

    - name: Summary
      run: |
        echo "## 📦 ZeroTier One Alpine Build Summary" >> $GITHUB_STEP_SUMMARY
        echo "" >> $GITHUB_STEP_SUMMARY
        echo "| Property | Value |" >> $GITHUB_STEP_SUMMARY
        echo "|----------|-------|" >> $GITHUB_STEP_SUMMARY
        echo "| **Version** | \`$ZEROTIER_VERSION\` |" >> $GITHUB_STEP_SUMMARY
        echo "| **Architecture** | \`$(uname -m)\` |" >> $GITHUB_STEP_SUMMARY
        echo "| **Package Name** | \`$PACKAGE_FILE\` |" >> $GITHUB_STEP_SUMMARY
        echo "| **Alpine Version** | \`$(cat /etc/alpine-release)\` |" >> $GITHUB_STEP_SUMMARY
        echo "| **Build Date** | \`$(date -u +"%Y-%m-%d %H:%M:%S UTC")\` |" >> $GITHUB_STEP_SUMMARY
        echo "" >> $GITHUB_STEP_SUMMARY
        echo "### 📥 Download Package" >> $GITHUB_STEP_SUMMARY
        echo "" >> $GITHUB_STEP_SUMMARY
        echo "\`\`\`bash" >> $GITHUB_STEP_SUMMARY
        echo "wget \"$FORGEJO_URL/api/packages/${{ github.repository_owner }}/generic/zerotier-one-alpine/$ZEROTIER_VERSION/$PACKAGE_FILE\"" >> $GITHUB_STEP_SUMMARY
        echo "\`\`\`" >> $GITHUB_STEP_SUMMARY