#!/bin/bash
#
# Build script for Cthulhu screen reader using Meson build system
# This script builds and installs Cthulhu locally to ~/.local
#

set -e  # Exit on error

echo "Cthulhu Meson Local Build Script"
echo "Building and installing Cthulhu to ~/.local"
echo "================================================"

# Check if we're in the right directory
if [[ ! -f "meson.build" ]] || [[ ! -f "src/cthulhu/cthulhu.py" ]]; then
    echo "Error: This script must be run from the Cthulhu source directory"
    exit 1
fi

# Check for required dependencies
echo "Checking dependencies..."
for cmd in meson ninja python3; do
    if ! command -v "$cmd" &> /dev/null; then
        echo "Error: $cmd is not installed"
        echo "Please install: meson ninja python"
        exit 1
    fi
done

# Check for optional dependencies
missingOptional=()
if ! python3 -c "import gi" 2>/dev/null; then
    missingOptional+=("python-gi")
fi

if [[ ${#missingOptional[@]} -gt 0 ]]; then
    echo "Warning: Optional dependencies missing: ${missingOptional[*]}"
    echo "Cthulhu may not function properly without these."
fi

# Clean any cached bytecode
echo "Removing __pycache__ directories..."
find . -type d -name "__pycache__" -prune -exec rm -rf {} +

# Clean any existing build directory
if [[ -d "_build" ]]; then
    echo "Removing existing build directory..."
    rm -rf _build
fi

# Setup Meson build
echo "Setting up Meson build..."
meson setup _build --prefix="$HOME/.local" --buildtype=debugoptimized

# Build
echo "Building Cthulhu..."
meson compile -C _build

# Install
echo "Installing Cthulhu to ~/.local..."
meson install -C _build

# Update desktop database and icon cache
if command -v update-desktop-database &> /dev/null; then
    echo "Updating desktop database..."
    update-desktop-database "$HOME/.local/share/applications" 2>/dev/null || true
fi

if command -v gtk-update-icon-cache &> /dev/null; then
    echo "Updating icon cache..."
    gtk-update-icon-cache -f -t "$HOME/.local/share/icons/hicolor" 2>/dev/null || true
fi

echo
echo "Build completed successfully!"
echo
echo "To run Cthulhu:"
echo "  ~/.local/bin/cthulhu"
echo
echo "To run Cthulhu setup:"
echo "  ~/.local/bin/cthulhu -s"
echo
echo "Build artifacts are in: _build/"
echo "To clean build artifacts, run: rm -rf _build"