#!/bin/bash

# Download Offline Packages Script for Kivy Signage Player
# This script downloads all necessary Python packages and documents system packages

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_DIR="$SCRIPT_DIR/repo"
WHEELS_DIR="$REPO_DIR/python-wheels"
SYSTEM_DIR="$REPO_DIR/system-packages"

echo "=========================================="
echo "Downloading Offline Packages"
echo "=========================================="
echo ""

# Check if repo directory exists
if [ ! -d "$REPO_DIR" ]; then
    echo "Error: repo directory not found!"
    echo "Creating directories..."
    mkdir -p "$WHEELS_DIR"
    mkdir -p "$SYSTEM_DIR"
fi

# Download Python packages
echo "Step 1: Downloading Python wheels..."
echo "--------------------"
cd "$SCRIPT_DIR"

# Check if pip is installed
if ! command -v pip3 &> /dev/null; then
    echo "Error: pip3 is not installed. Please install it first:"
    echo "  sudo apt install python3-pip"
    exit 1
fi

# Download all Python packages and their dependencies
echo "Downloading packages from requirements.txt..."
pip3 download -r requirements.txt -d "$WHEELS_DIR" --platform linux_armv7l --only-binary=:all: || \
pip3 download -r requirements.txt -d "$WHEELS_DIR" || true

# Also download for general Linux platforms as fallback
echo "Downloading cross-platform packages..."
pip3 download -r requirements.txt -d "$WHEELS_DIR" || true

echo ""
echo "Python wheels downloaded to: $WHEELS_DIR"
echo "Total wheel files: $(ls -1 "$WHEELS_DIR"/*.whl 2>/dev/null | wc -l)"

# List system packages
echo ""
echo "Step 2: System packages information"
echo "--------------------"
echo "System packages are listed in: $SYSTEM_DIR/apt-packages.txt"
echo ""
echo "To download .deb files for offline installation, run:"
echo "  bash download_deb_packages.sh"
echo ""

# Summary
echo "=========================================="
echo "Download Complete!"
echo "=========================================="
echo ""
echo "Offline packages ready in: $REPO_DIR"
echo ""
echo "Next steps:"
echo "1. Copy the entire 'repo' folder to your offline system"
echo "2. Run: bash install.sh"
echo "   (The installer will automatically detect and use offline packages)"
echo ""