#!/bin/bash

# sovereign_browser - Build Script
# Builds the WebKitGTK + C99 browser for the current (or specified) architecture.
#
# This mirrors the workflow from nostr_core_lib/build.sh: colored output,
# architecture auto-detection, verbose mode, and a clean help screen. The
# actual compilation is delegated to the Makefile, which uses pkg-config
# for WebKitGTK 4.1.

set -e  # Exit on error

# Color constants
RED='\033[31m'
GREEN='\033[32m'
YELLOW='\033[33m'
BLUE='\033[34m'
BOLD='\033[1m'
RESET='\033[0m'

# Detect if we should use colors (terminal output and not piped)
USE_COLORS=true
if [ ! -t 1 ] || [ "$NO_COLOR" = "1" ]; then
    USE_COLORS=false
fi

# Function to print output with colors
print_info() {
    if [ "$USE_COLORS" = true ]; then
        echo -e "${BLUE}[INFO]${RESET} $1"
    else
        echo "[INFO] $1"
    fi
}

print_success() {
    if [ "$USE_COLORS" = true ]; then
        echo -e "${GREEN}${BOLD}[SUCCESS]${RESET} $1"
    else
        echo "[SUCCESS] $1"
    fi
}

print_warning() {
    if [ "$USE_COLORS" = true ]; then
        echo -e "${YELLOW}[WARNING]${RESET} $1"
    else
        echo "[WARNING] $1"
    fi
}

print_error() {
    if [ "$USE_COLORS" = true ]; then
        echo -e "${RED}${BOLD}[ERROR]${RESET} $1"
    else
        echo "[ERROR] $1"
    fi
}

# Default values
ARCHITECTURE=""
VERBOSE=false
HELP=false
RUN_AFTER=false
NO_COLOR_FLAG=false

# Parse command line arguments
while [[ $# -gt 0 ]]; do
    case $1 in
        x64|x86_64|amd64)
            ARCHITECTURE="x64"
            shift
            ;;
        arm64|aarch64)
            ARCHITECTURE="arm64"
            shift
            ;;
        --verbose|-v)
            VERBOSE=true
            shift
            ;;
        --run|-r)
            RUN_AFTER=true
            shift
            ;;
        --no-color)
            NO_COLOR_FLAG=true
            shift
            ;;
        --help|-h)
            HELP=true
            shift
            ;;
        *)
            print_error "Unknown argument: $1"
            HELP=true
            shift
            ;;
    esac
done

# Apply no-color flag
if [ "$NO_COLOR_FLAG" = true ]; then
    USE_COLORS=false
fi

# Show help
if [ "$HELP" = true ]; then
    echo "sovereign_browser - Build Script"
    echo ""
    echo "Usage: $0 [architecture] [options]"
    echo ""
    echo "Architectures:"
    echo "  x64, x86_64, amd64    Build for x86-64 architecture (native)"
    echo "  arm64, aarch64        Build for ARM64 architecture (cross-compile)"
    echo "  (default)             Build for current architecture"
    echo ""
    echo "Options:"
    echo "  --run, -r             Run the browser after a successful build"
    echo "  --verbose, -v         Verbose output (pass V=1 to make)"
    echo "  --no-color            Disable colored output"
    echo "  --help, -h            Show this help"
    echo ""
    echo "Requirements:"
    echo "  Debian 13 (trixie) or similar with WebKitGTK 4.1 dev headers:"
    echo "    sudo apt install libwebkit2gtk-4.1-dev"
    echo ""
    echo "Examples:"
    echo "  $0                    # Build for current architecture"
    echo "  $0 x64                # Build for x64"
    echo "  $0 -r                 # Build and run"
    echo "  $0 arm64 -v           # Cross-compile for ARM64, verbose"
    exit 0
fi

print_info "sovereign_browser - Build Script"

# Check if we're running from the correct directory
CURRENT_DIR=$(basename "$(pwd)")
if [ "$CURRENT_DIR" != "sovereign_browser" ]; then
    print_error "Build script must be run from the sovereign_browser directory"
    echo ""
    echo "Current directory: $CURRENT_DIR"
    echo "Expected directory: sovereign_browser"
    echo ""
    echo "Please change to the sovereign_browser directory first, then run the build script."
    echo ""
    echo "Correct usage:"
    echo "  cd sovereign_browser"
    echo "  ./build.sh"
    echo ""
    exit 1
fi

# Check that the source tree is present
if [ ! -f "src/main.c" ] || [ ! -f "Makefile" ]; then
    print_error "src/main.c or Makefile not found in the current directory"
    echo ""
    echo "This script must be run from the root of the sovereign_browser project."
    exit 1
fi

###########################################################################################
############  AUTODETECT SYSTEM ARCHITECTURE
###########################################################################################

# Determine architecture
if [ -z "$ARCHITECTURE" ]; then
    ARCH=$(uname -m)
    case $ARCH in
        x86_64|amd64)
            ARCHITECTURE="x64"
            ;;
        aarch64|arm64)
            ARCHITECTURE="arm64"
            ;;
        *)
            ARCHITECTURE="x64"  # Default fallback
            print_warning "Unknown architecture '$ARCH', defaulting to x64"
            ;;
    esac
fi

print_info "Target architecture: $ARCHITECTURE"

# Set compiler based on architecture
case $ARCHITECTURE in
    x64)
        export CC="gcc"
        ;;
    arm64)
        export CC="aarch64-linux-gnu-gcc"
        ;;
    *)
        print_error "Unsupported architecture: $ARCHITECTURE"
        exit 1
        ;;
esac

# Check if compiler exists
if ! command -v $CC &> /dev/null; then
    print_error "Compiler $CC not found"
    if [ "$ARCHITECTURE" = "arm64" ]; then
        print_info "Install ARM64 cross-compiler: sudo apt install gcc-aarch64-linux-gnu"
    fi
    exit 1
fi

###########################################################################################
############  CHECK DEPENDENCIES
###########################################################################################

print_info "Checking dependencies..."

# WebKitGTK 4.1 is the hard requirement.
if ! command -v pkg-config &> /dev/null; then
    print_error "pkg-config not found"
    print_info "Install with: sudo apt install pkg-config"
    exit 1
fi

if ! pkg-config --exists webkit2gtk-4.1; then
    print_error "webkit2gtk-4.1 not found via pkg-config"
    print_info "Install with: sudo apt install libwebkit2gtk-4.1-dev"
    exit 1
fi

if [ "$VERBOSE" = true ]; then
    print_info "WebKitGTK 4.1 CFLAGS: $(pkg-config --cflags webkit2gtk-4.1)"
    print_info "WebKitGTK 4.1 LIBS:   $(pkg-config --libs webkit2gtk-4.1)"
fi

print_success "All dependencies satisfied"

###########################################################################################
############  BUILD
###########################################################################################

# Read version from VERSION file (if present) for the build banner.
VERSION_STR="(unknown)"
if [ -f "VERSION" ]; then
    VERSION_STR="v$(tr -d '[:space:]' < VERSION)"
fi

print_info "Building sovereign_browser $VERSION_STR..."

MAKE_FLAGS=""
if [ "$VERBOSE" = true ]; then
    MAKE_FLAGS="V=1"
fi

# Delegate to the Makefile. CC is exported above so cross-compiles work.
if make $MAKE_FLAGS; then
    print_success "Build complete: ./sovereign_browser $VERSION_STR"
else
    print_error "Build failed"
    exit 1
fi

# Optional: run immediately.
if [ "$RUN_AFTER" = true ]; then
    print_info "Launching sovereign_browser..."
    ./sovereign_browser
fi