#!/bin/bash

# Bootc Debian Package Builder
# Clones bootc source, applies compatibility patch, and builds .deb package

set -e

# Configuration
BOOTC_VERSION="1.5.1"
PACKAGE_VERSION="${BOOTC_VERSION}-1~trixie1"
BOOTC_REPO="https://github.com/containers/bootc.git"
BUILD_DIR="/tmp/bootc-deb-build"
PATCH_FILE="bootc-libostree-compatibility.patch"

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Logging functions
log_info() {
    echo -e "${BLUE}[INFO]${NC} $1"
}

log_success() {
    echo -e "${GREEN}[SUCCESS]${NC} $1"
}

log_warning() {
    echo -e "${YELLOW}[WARNING]${NC} $1"
}

log_error() {
    echo -e "${RED}[ERROR]${NC} $1" >&2
    exit 1
}

# Check prerequisites
check_prerequisites() {
    log_info "Checking prerequisites..."
    
    # Check if we're in the right directory
    if [ ! -f "debian/control" ]; then
        log_error "debian/control not found. Please run this script from the bootc-deb repository root."
    fi
    
    # Check if patch file exists
    if [ ! -f "$PATCH_FILE" ]; then
        log_error "Patch file not found: $PATCH_FILE"
    fi
    
    # Check for required tools
    for tool in dpkg-buildpackage cargo rustc pkg-config git; do
        if ! command -v $tool &> /dev/null; then
            log_error "Required tool not found: $tool"
        fi
    done
    
    log_success "Prerequisites check passed."
}

# Clean previous builds
clean_build() {
    log_info "Cleaning previous builds..."
    rm -rf "$BUILD_DIR"
    mkdir -p "$BUILD_DIR"
    log_success "Build directory cleaned."
}

# Clone bootc source
clone_source() {
    log_info "Cloning bootc source from GitHub..."
    
    cd "$BUILD_DIR"
    git clone --depth 1 --branch "v${BOOTC_VERSION}" "$BOOTC_REPO" "bootc-${BOOTC_VERSION}"
    
    if [ ! -d "bootc-${BOOTC_VERSION}" ]; then
        log_error "Failed to clone bootc source"
    fi
    
    log_success "Bootc source cloned successfully."
}

# Apply patch and prepare packaging
prepare_package() {
    log_info "Preparing package..."
    
    cd "$BUILD_DIR/bootc-${BOOTC_VERSION}"
    
    # Apply our compatibility patch
    log_info "Applying compatibility patch..."
    patch -p1 < "../../$PATCH_FILE"
    
    # Copy packaging files
    log_info "Copying packaging files..."
    cp -r ../../debian .
    
    log_success "Package preparation completed."
}

# Install build dependencies
install_build_deps() {
    log_info "Installing build dependencies..."
    
    sudo apt-get update
    sudo apt-get install -y \
        debhelper \
        dh-cargo \
        cargo \
        rustc \
        pkg-config \
        libostree-dev \
        libglib2.0-dev \
        libgpgme-dev \
        libssl-dev \
        libcurl4-gnutls-dev \
        libarchive-dev \
        libfuse3-dev \
        libsystemd-dev \
        libmount-dev \
        libselinux1-dev \
        libavahi-client-dev \
        libavahi-glib-dev \
        libsoup-3.0-dev \
        gobject-introspection \
        gtk-doc-tools \
        docbook-xml \
        docbook-xsl \
        xsltproc \
        gjs \
        libglib2.0-doc
    
    log_success "Build dependencies installed."
}

# Build the package
build_package() {
    log_info "Building bootc package..."
    
    cd "$BUILD_DIR/bootc-${BOOTC_VERSION}"
    
    # Build the package
    log_info "Running dpkg-buildpackage..."
    dpkg-buildpackage -us -uc -b
    
    log_success "Package build completed."
}

# Copy results
copy_results() {
    log_info "Copying build results..."
    
    cd "$BUILD_DIR"
    
    # Copy .deb files to current directory
    cp *.deb ../
    cp *.buildinfo ../ 2>/dev/null || true
    cp *.changes ../ 2>/dev/null || true
    
    log_success "Build results copied to: $(pwd)/.."
}

# Show results
show_results() {
    echo
    log_success "Bootc Debian package build completed successfully!"
    echo
    log_info "Created files:"
    ls -la *.deb 2>/dev/null || log_warning "No .deb files found"
    echo
    log_info "To install the package:"
    echo "sudo dpkg -i bootc_${PACKAGE_VERSION}_*.deb"
    echo "sudo apt-get install -f"
    echo
    log_info "Or use the install script:"
    echo "./install.sh"
}

# Main execution
main() {
    log_info "Starting bootc Debian package build..."
    log_info "Version: $PACKAGE_VERSION"
    log_info "Source: $BOOTC_REPO"
    log_info "Build directory: $BUILD_DIR"
    
    check_prerequisites
    clean_build
    clone_source
    prepare_package
    install_build_deps
    build_package
    copy_results
    show_results
}

# Run main function
main "$@"