#!/bin/bash

# Setup script for apt-cacher-ng to support Debian Forge development
# This script installs and configures apt-cacher-ng for local development

set -e

echo "Setting up apt-cacher-ng for Debian Forge development..."

# Check if running as root
if [[ $EUID -ne 0 ]]; then
   echo "This script must be run as root (use sudo)"
   exit 1
fi

# Install apt-cacher-ng
echo "Installing apt-cacher-ng..."
if command -v dnf &> /dev/null; then
    dnf install -y apt-cacher-ng
elif command -v apt &> /dev/null; then
    apt update
    apt install -y apt-cacher-ng
else
    echo "No supported package manager found (dnf or apt)"
    exit 1
fi

# Create configuration directory
mkdir -p /etc/apt-cacher-ng

# Configure apt-cacher-ng for Debian repositories
cat > /etc/apt-cacher-ng/acng.conf << 'EOF'
# apt-cacher-ng configuration for Debian Forge development

# Cache directory
CacheDir: /var/cache/apt-cacher-ng

# Log directory
LogDir: /var/log/apt-cacher-ng

# Port to listen on
Port: 3142

# Bind address (listen on all interfaces)
BindAddress: 192.168.1.101

# Verbose logging for development
VerboseLog: 1

# Allow access from localhost
AllowUser: *

# Cache Debian repositories
Backend: http://deb.debian.org/debian
Backend: http://deb.debian.org/debian-security
Backend: http://deb.debian.org/debian-backports

# Cache size limit (5GB)
MaxStandbyConcurrency: 10
MaxStandbyConcurrencyPerMirror: 2
MaxStandbyConcurrencyPerBackend: 2

# Keep packages for 30 days
ExTreshold: 30
EOF

# Start and enable apt-cacher-ng service
echo "Starting apt-cacher-ng service..."
systemctl daemon-reload
systemctl enable apt-cacher-ng
systemctl start apt-cacher-ng

# Check service status
if systemctl is-active --quiet apt-cacher-ng; then
    echo "✅ apt-cacher-ng is running on http://192.168.1.101:3142"
    echo "You can now use 'apt_proxy: \"http://192.168.1.101:3142\"' in your manifests"
else
    echo "❌ Failed to start apt-cacher-ng service"
    systemctl status apt-cacher-ng
    exit 1
fi

# Test the proxy
echo "Testing apt-cacher-ng..."
if curl -s http://localhost:3142/acng-report.html > /dev/null; then
    echo "✅ apt-cacher-ng is responding correctly"
else
    echo "❌ apt-cacher-ng is not responding"
    exit 1
fi

echo ""
echo "apt-cacher-ng setup complete!"
echo ""
echo "Usage in your manifests:"
echo "  \"apt_proxy\": \"http://192.168.1.101:3142\""
echo ""
echo "To view cache statistics: http://localhost:3142/acng-report.html"
echo "To view cache contents: http://localhost:3142/deb.debian.org/debian/"
echo ""
echo "To stop the service: sudo systemctl stop apt-cacher-ng"
echo "To start the service: sudo systemctl start apt-cacher-ng"