#!/bin/bash
# Direct build script for uTun on Windows with OpenSSL
# This script bypasses the complex autotools make dependencies

set -e

echo "uTun Direct Build Script for Windows with OpenSSL"
echo "=================================================="
echo ""

# Detect MSYS2 environment and set OpenSSL paths
if [ -d "/c/msys64/ucrt64/include/openssl" ]; then
    export CFLAGS="$CFLAGS -I/c/msys64/ucrt64/include"
    export LDFLAGS="$LDFLAGS -L/c/msys64/ucrt64/lib"
    echo "Using MSYS2 UCRT64 OpenSSL"
elif [ -d "/ucrt64/include/openssl" ]; then
    export CFLAGS="$CFLAGS -I/ucrt64/include"
    export LDFLAGS="$LDFLAGS -L/ucrt64/lib"
    echo "Using MSYS2 UCRT64 OpenSSL"
elif [ -d "/mingw64/include/openssl" ]; then
    export CFLAGS="$CFLAGS -I/mingw64/include"
    export LDFLAGS="$LDFLAGS -L/mingw64/lib"
    echo "Using MSYS2 MINGW64 OpenSSL"
fi

# Run configure if needed
if [ ! -f config.status ] || [ config.status -ot configure ]; then
    echo ""
    echo "Running configure..."
    ./configure --prefix=/usr/local --host=x86_64-w64-mingw32 --disable-dependency-tracking 2>&1 | tee configure.log
fi

# Create necessary directories
mkdir -p src/.deps lib/.deps tests/.deps

echo ""
echo "Building libuasync.a..."
cd lib

# Build library objects
for src in u_async.c ll_queue.c memory_pool.c debug_config.c timeout_heap.c sha256.c platform_compat.c socket_compat.c; do
    if [ -f "$src" ]; then
        obj="${src%.c}.o"
        echo "  CC $src"
        x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -g -O2 -c "$src" -o "$obj" 2>&1 | grep -v "warning:" || true
    fi
done

# Create static library
ar cru libuasync.a *.o
ranlib libuasync.a
cd ..

echo ""
echo "Building utun.exe..."
cd src

# Build source objects
CORE_SOURCES="utun.c utun_instance.c config_parser.c config_updater.c route_lib.c route_bgp.c routing.c tun_if.c tun_route.c etcp.c etcp_connections.c etcp_loadbalancer.c secure_channel.c crc32.c pkt_normalizer.c etcp_api.c tun_windows.c"

for src in $CORE_SOURCES; do
    obj="utun-${src%.c}.o"
    echo "  CC $src"
    x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I../lib -I../tinycrypt/lib/include -I../tinycrypt/lib/source $CFLAGS -g -O2 -c "$src" -o "$obj" 2>&1 | grep -E "error:|warning:.*deprecated" || true
done

# Link executable
echo "  LINK utun.exe"
x86_64-w64-mingw32-gcc -o utun.exe utun-*.o ../lib/libuasync.a -lpthread -lm -lws2_32 -liphlpapi -lbcrypt $LDFLAGS -lcrypto 2>&1 | grep -E "error:|undefined reference" || true

# Copy to root
cp utun.exe ../utun.exe
cd ..

echo ""
echo "Build completed successfully!"
echo "Binary: utun.exe"
echo ""
echo "Make sure wintun.dll is in the same directory as utun.exe"