name: Build Debian Package

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main ]
  release:
    types: [ published ]

jobs:
  build-deb:
    runs-on: ubuntu-24.04
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      
    - name: Install dependencies
      run: |
        sudo apt-get update
        sudo apt-get install -y \
          build-essential \
          devscripts \
          debhelper \
          dh-make \
          fakeroot \
          lintian \
          ostree \
          libostree-dev \
          git \
          curl \
          wget
        
    - name: Build apt-layer binary
      run: |
        make clean
        make
        ls -la bin/
        
    - name: Create Debian package structure
      run: |
        # Create package directory
        mkdir -p apt-layer-1.0.0
        cd apt-layer-1.0.0
        
        # Copy binary and create directory structure
        mkdir -p usr/local/bin
        mkdir -p usr/local/share/apt-layer
        mkdir -p usr/local/share/doc/apt-layer
        mkdir -p usr/local/share/man/man1
        mkdir -p etc/apt-layer
        
        # Copy binary
        cp ../../bin/apt-layer usr/local/bin/
        chmod +x usr/local/bin/apt-layer
        
        # Copy documentation
        cp ../../README.md usr/local/share/doc/apt-layer/
        cp ../../README-C.md usr/local/share/doc/apt-layer/
        cp ../../LICENSE usr/local/share/doc/apt-layer/
        
        # Create man page
        cat > usr/local/share/man/man1/apt-layer.1 << 'EOF'
.TH APT-LAYER 1 "2024" "apt-layer" "User Commands"
.SH NAME
apt-layer \- Create OSTree layers using apt packages
.SH SYNOPSIS
.B apt-layer
[\fIOPTIONS\fR] \fIBASE-BRANCH\fR \fINEW-BRANCH\fR [\fIPACKAGES\fR...]
.SH DESCRIPTION
apt-layer is a tool for creating OSTree layers using apt packages, inspired by rpm-ostree.
.SH OPTIONS
.TP
.B \-\-help
Show help message
.TP
.B \-\-version
Show version information
.TP
.B \-\-list
List available branches
.TP
.B \-\-info \fIBRANCH\fR
Show information about a branch
.TP
.B \-\-container
Use container-based layer creation
.TP
.B \-\-oci-export \fIBRANCH\fR \fIIMAGE-NAME\fR
Export branch as OCI image
.SH EXAMPLES
.TP
Create a gaming layer:
.B apt-layer particleos/base/trixie particleos/gaming/trixie steam wine
.TP
Create container-based layer:
.B apt-layer \-\-container particleos/base/trixie particleos/gaming/trixie steam wine
.SH AUTHOR
Written for ParticleOS project
.SH BUGS
Report bugs to the ParticleOS project
EOF
        
        # Create configuration file
        cat > etc/apt-layer/config << 'EOF'
# apt-layer configuration
OSTREE_REPO=/var/lib/apt-layer/ostree-repo
BUILD_DIR=/var/lib/apt-layer/build
CONTAINER_RUNTIME=podman
LOG_LEVEL=info
EOF
        
        # Create postinst script
        cat > DEBIAN/postinst << 'EOF'
#!/bin/bash
set -e

# Create directories
mkdir -p /var/lib/apt-layer/ostree-repo
mkdir -p /var/lib/apt-layer/build
mkdir -p /var/lib/apt-layer/cache

# Set permissions
chown -R root:root /var/lib/apt-layer
chmod 755 /var/lib/apt-layer
chmod 755 /var/lib/apt-layer/ostree-repo
chmod 755 /var/lib/apt-layer/build
chmod 755 /var/lib/apt-layer/cache

# Update man database
if command -v mandb >/dev/null 2>&1; then
    mandb -q
fi

echo "apt-layer installed successfully"
echo "Configuration: /etc/apt-layer/config"
echo "Data directory: /var/lib/apt-layer"
EOF
        
        # Create prerm script
        cat > DEBIAN/prerm << 'EOF'
#!/bin/bash
set -e

echo "Removing apt-layer..."
EOF
        
        # Create postrm script
        cat > DEBIAN/postrm << 'EOF'
#!/bin/bash
set -e

if [ "$1" = "purge" ]; then
    echo "Purging apt-layer data..."
    rm -rf /var/lib/apt-layer
    rm -rf /etc/apt-layer
fi
EOF
        
        # Set permissions
        chmod 755 DEBIAN/postinst
        chmod 755 DEBIAN/prerm
        chmod 755 DEBIAN/postrm
        
        # Create control file
        cat > DEBIAN/control << 'EOF'
Package: apt-layer
Version: 1.0.0
Section: admin
Priority: optional
Architecture: amd64
Depends: ostree, podman | docker.io, build-essential
Recommends: git, curl, wget
Maintainer: ParticleOS Team <team@particleos.org>
Description: Create OSTree layers using apt packages
 apt-layer is a tool for creating OSTree layers using apt packages,
 inspired by rpm-ostree and designed for Ubuntu/Debian-based immutable
 systems like ParticleOS.
 .
 Features:
  * Layer creation with apt packages
  * Container-based isolation
  * OCI export functionality
  * Layer management and rollback
  * Recipe support for declarative layers
EOF
        
        # Create changelog
        cat > DEBIAN/changelog << 'EOF'
apt-layer (1.0.0) unstable; urgency=medium

  * Initial release
  * C implementation of apt-layer
  * OSTree layer creation
  * Container-based builds
  * OCI export functionality

 -- ParticleOS Team <team@particleos.org>  $(date -R)
EOF
        
        # Create copyright
        cat > DEBIAN/copyright << 'EOF'
Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: apt-layer
Source: https://github.com/particleos/apt-layer

Files: *
Copyright: 2024 ParticleOS Team
License: MIT
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 .
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
 .
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
EOF
        
        # Create conffiles
        echo "/etc/apt-layer/config" > DEBIAN/conffiles
        
        # Create md5sums
        find usr etc -type f -exec md5sum {} \; > DEBIAN/md5sums
        
    - name: Build Debian package
      run: |
        cd apt-layer-1.0.0
        
        # Build the package
        dpkg-buildpackage -b -us -uc -rfakeroot
        
        # Check the package
        lintian ../apt-layer_1.0.0_amd64.deb || true
        
    - name: Upload package artifact
      uses: actions/upload-artifact@v4
      with:
        name: apt-layer-deb
        path: apt-layer_1.0.0_amd64.deb
        retention-days: 30
        
    - name: Create release asset (on release)
      if: github.event_name == 'release'
      run: |
        cp apt-layer_1.0.0_amd64.deb apt-layer_${{ github.event.release.tag_name }}_amd64.deb
        
    - name: Upload to release (on release)
      if: github.event_name == 'release'
      uses: actions/upload-release-asset@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        upload_url: ${{ github.event.release.upload_url }}
        asset_path: ./apt-layer_${{ github.event.release.tag_name }}_amd64.deb
        asset_name: apt-layer_${{ github.event.release.tag_name }}_amd64.deb
        asset_content_type: application/vnd.debian.binary-package