#!/bin/bash
# Cross-compilation script for building Windows binaries on Linux

set -e

echo "RLogg - Cross-Platform Builder (Linux → All Platforms)"
echo "======================================================="
echo ""

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

# Extract version from Cargo.toml
VERSION=$(grep -m1 '^version = ' Cargo.toml | sed 's/version = "\(.*\)"/\1/')
echo "Version: $VERSION"
echo ""

# Create dist directory
DIST_DIR="dist"
mkdir -p "$DIST_DIR"

# Check if cross is installed
check_cross() {
    if ! command -v cross &> /dev/null; then
        echo -e "${YELLOW}Installing 'cross' for cross-compilation...${NC}"
        cargo install cross --git https://github.com/cross-rs/cross
    else
        echo -e "${GREEN}✓ 'cross' is already installed${NC}"
    fi
}

# Build using cross
build_with_cross() {
    local target=$1
    local name=$2

    echo ""
    echo -e "${BLUE}=== Building for $name ===${NC}"
    echo -e "${YELLOW}Target: $target${NC}"

    # Clean build artifacts to avoid GLIBC mismatch with build scripts
    echo -e "${YELLOW}Cleaning build artifacts...${NC}"
    cargo clean --release --target "$target"

    if cross build --release --target "$target"; then
        echo -e "${GREEN}✓ Build successful for $name${NC}"

        # Copy binary to dist directory with version
        if [[ "$target" == *"windows"* ]]; then
            cp "target/$target/release/rlogg.exe" "$DIST_DIR/rlogg-$VERSION-$name.exe"
            echo -e "${GREEN}✓ Binary: $DIST_DIR/rlogg-$VERSION-$name.exe${NC}"
        else
            cp "target/$target/release/rlogg" "$DIST_DIR/rlogg-$VERSION-$name"
            strip "$DIST_DIR/rlogg-$VERSION-$name" 2>/dev/null || true
            echo -e "${GREEN}✓ Binary: $DIST_DIR/rlogg-$VERSION-$name${NC}"
        fi
        return 0
    else
        echo -e "${RED}✗ Build failed for $name${NC}"
        return 1
    fi
}

# Build using regular cargo (for native Linux)
build_native() {
    echo ""
    echo -e "${BLUE}=== Building for Linux (native) ===${NC}"

    if cargo build --release; then
        echo -e "${GREEN}✓ Build successful for Linux${NC}"
        cp "target/release/rlogg" "$DIST_DIR/rlogg-$VERSION-linux-x86_64"
        strip "$DIST_DIR/rlogg-$VERSION-linux-x86_64" 2>/dev/null || true
        echo -e "${GREEN}✓ Binary: $DIST_DIR/rlogg-$VERSION-linux-x86_64${NC}"
        return 0
    else
        echo -e "${RED}✗ Build failed for Linux${NC}"
        return 1
    fi
}

# Main menu
show_menu() {
    echo ""
    echo "Select targets to build:"
    echo "  1) Linux x86_64 (native)"
    echo "  2) Windows x86_64 (cross-compile with MinGW)"
    echo "  3) Both Linux and Windows"
    echo "  4) Exit"
    echo ""
    read -p "Enter choice [1-4]: " choice
    echo ""
}

# Parse command line arguments
if [ $# -eq 0 ]; then
    # Interactive mode
    while true; do
        show_menu

        case $choice in
            1)
                build_native
                ;;
            2)
                check_cross
                build_with_cross "x86_64-pc-windows-gnu" "windows-x86_64"
                ;;
            3)
                build_native
                check_cross
                build_with_cross "x86_64-pc-windows-gnu" "windows-x86_64"
                ;;
            4)
                echo "Exiting..."
                break
                ;;
            *)
                echo -e "${RED}Invalid choice${NC}"
                ;;
        esac
    done
else
    # Command line mode
    case "$1" in
        linux)
            build_native
            ;;
        windows|win)
            check_cross
            build_with_cross "x86_64-pc-windows-gnu" "windows-x86_64"
            ;;
        all)
            build_native
            check_cross
            build_with_cross "x86_64-pc-windows-gnu" "windows-x86_64"
            ;;
        *)
            echo "Usage: $0 [linux|windows|all]"
            echo ""
            echo "  linux   - Build for Linux (native)"
            echo "  windows - Cross-compile for Windows (MinGW)"
            echo "  all     - Build for both platforms"
            echo ""
            echo "Or run without arguments for interactive mode"
            exit 1
            ;;
    esac
fi

echo ""
echo -e "${GREEN}=== Build Complete ===${NC}"
if [ -d "$DIST_DIR" ] && [ "$(ls -A $DIST_DIR)" ]; then
    echo "Binaries in '$DIST_DIR':"
    ls -lh "$DIST_DIR"
else
    echo "No binaries were built"
fi