#!/bin/bash
set -e

source "$(dirname "$0")/versions.sh"

# Подготавливаем переменные

TOP="$(pwd)"
INSTALL_DIR="${TOP}/build/install"
INSTALL_BIN_DIR="${INSTALL_DIR}/bin"
SYSROOT_DIR="${INSTALL_DIR}/sysroot"
TARGET="arm-uclinuxfdpiceabi"
TOOLCHAIN="${TARGET}"
TOOLCHAIN_PATH="${INSTALL_DIR}/bin"
CFLAGS_TOOLSET='-O2'
CFLAGS_TARGET='-Os -mthumb'
_ORIG_PATH="$PATH"

export SYSROOT="${SYSROOT_DIR}"
export PREFIX="${SYSROOT_DIR}/usr"
export TARGET TOOLCHAIN TOOLCHAIN_PATH
export CC="${TOOLCHAIN_PATH}/${TOOLCHAIN}-gcc ${CFLAGS_TOOLSET} ${CFLAGS_TARGET}"
export CXX="${TOOLCHAIN_PATH}/${TOOLCHAIN}-g++ ${CFLAGS_TOOLSET} ${CFLAGS_TARGET}"
export CPP="${TOOLCHAIN_PATH}/${TOOLCHAIN}-cpp"
export LD="${TOOLCHAIN_PATH}/${TOOLCHAIN}-ld"
export AR="${TOOLCHAIN_PATH}/${TOOLCHAIN}-ar"
# Без флагов (rc) zlib/Makefile вызывает «ar libz.a …» — ar воспринимает имя архива как опции.
export ARFLAGS='rc'
export AS="${TOOLCHAIN_PATH}/${TOOLCHAIN}-as"
export NM="${TOOLCHAIN_PATH}/${TOOLCHAIN}-nm"
export RANLIB="${TOOLCHAIN_PATH}/${TOOLCHAIN}-ranlib"
export STRIP="${TOOLCHAIN_PATH}/${TOOLCHAIN}-strip"
export OBJCOPY="${TOOLCHAIN_PATH}/${TOOLCHAIN}-objcopy"
export OBJDUMP="${TOOLCHAIN_PATH}/${TOOLCHAIN}-objdump"
export CFLAGS=""
export CXXFLAGS=""
export LDFLAGS=""
export CFLAGS_FOR_TARGET="${CFLAGS_TARGET}"
export CXXFLAGS_FOR_TARGET="${CFLAGS_TARGET}"
export LDFLAGS_FOR_TARGET='-Wl,--fdpic'
export SUBARCH=armv7-m
export SUBMODE=thumb
export PATH="${TOOLCHAIN_PATH}:${_ORIG_PATH}"

# Подготавливаем пути к разделам

LIB_DIR="${TOP}/src/libs"
SYSROOT_ETC_DIR="${SYSROOT_DIR}/etc"
SYSROOT_USR_DIR="${SYSROOT_DIR}/usr"
BUILD_SRC_DIR="${TOP}/build"
LIB_BUILD_DIR="${BUILD_SRC_DIR}/src/libs"

# ==================================================================
# Распаковка библиотек
# ==================================================================

echo "== Распаковка библиотек =="

# Создаем каталог для сборки библиотек
mkdir -p "${LIB_BUILD_DIR}"

echo "== Поиск и распаковка архивов в ${LIB_DIR} =="

# Проходимся по *.tar.xz и *.tar.gz
shopt -s nullglob
for archive in "${LIB_DIR}"/*.tar.xz "${LIB_DIR}"/*.tar.gz; do
    # Если файлов нет – ничего не делаем
    [ -e "$archive" ] || continue

    fname="$(basename "$archive")"
    pkg="${fname%.tar.*}"      # имя папки после распаковки

    echo "--------------------------------------"
    echo "Найден архив: $fname"
    echo "Распаковка в: ${LIB_BUILD_DIR}/${pkg}"
    echo "--------------------------------------"

    mkdir -p "${LIB_BUILD_DIR}/${pkg}"
    tar -xf "$archive" -C "${LIB_BUILD_DIR}/${pkg}" --strip-components=1
done
shopt -u nullglob

echo "== Распаковка завершена =="

cd "${LIB_BUILD_DIR}/zlib-${ZLIB_VER}"
./configure --prefix=${SYSROOT_USR_DIR} --libdir=${SYSROOT_USR_DIR}/lib --static
make -j$(nproc)
make install

# ==================================================================

cd "${LIB_BUILD_DIR}/libnl-${LIBNL_VER}"
if ! command -v flex >/dev/null 2>&1; then
    echo "Ошибка: для сборки libnl нужен flex (пакет flex)."
    exit 1
fi
if ! command -v bison >/dev/null 2>&1; then
    echo "Ошибка: для сборки libnl нужен bison (byacc не подходит)."
    exit 1
fi
export YACC="bison -y"
export LEX="flex"
./configure \
    --host="${TARGET}" \
    --prefix="${SYSROOT_USR_DIR}" \
    --libdir="${SYSROOT_USR_DIR}/lib" \
    --disable-shared \
    --enable-static \
    --disable-cli
make -j$(nproc)
make install
unset YACC LEX

# ==================================================================

OPENSSL_S_SERVER_FILE="${LIB_BUILD_DIR}/openssl-${OPENSSL_VER}/apps/s_server.c"
if [ -f "${OPENSSL_S_SERVER_FILE}" ] && ! grep -q '^#include <sys/stat.h>$' "${OPENSSL_S_SERVER_FILE}"; then
    echo "== Патч OpenSSL: добавляю <sys/stat.h> в apps/s_server.c =="
    sed -i '/^#ifndef OPENSSL_NO_SOCK/i #include <sys/stat.h>' "${OPENSSL_S_SERVER_FILE}"
fi

cd "${LIB_BUILD_DIR}/openssl-${OPENSSL_VER}"
./Configure linux-armv4 \
    --prefix=${SYSROOT_USR_DIR} \
    --libdir=${SYSROOT_USR_DIR}/lib \
    --openssldir=${SYSROOT_ETC_DIR}/ssl \
	enable-legacy no-mdc2 no-rc5 no-ec2m no-sm2 no-sm4 no-ssl3 \
    no-shared no-dso no-async no-comp no-idea no-tests no-threads no-asm no-secure-memory no-seed no-weak-ssl-ciphers \
    no-afalgeng no-aria no-async no-bf no-blake2 no-camellia no-capieng no-cast no-chacha no-cms no-cmp no-ct \
    no-dgram no-dsa no-dtls no-ecdh no-ecdsa no-engine no-err no-filenames no-gost \
    no-ocsp no-pinshared no-poly1305 no-posix-io no-rc2 no-rc4 no-rdrand no-rfc3779 no-rmd160 no-scrypt no-sctp no-siphash \
    no-sm3 no-srp no-srtp no-ssl-trace no-ssl3 no-ssl3-method no-ts no-whirlpool enable-ktls \
    -DNO_FORK -DHAVE_FORK=0

make -j$(nproc) build_libs
make install_sw

# ==================================================================

cd "${LIB_BUILD_DIR}/LibVNCServer-${LIBVNCSERVER_VER}"
rm -rf build
mkdir -p build && cd build
cmake -S .. -B . \
  -DBUILD_SHARED_LIBS=OFF \
  -DWITH_THREADS=OFF \
  -DWITH_TESTS=OFF \
  -DWITH_EXAMPLES=OFF \
  -DWITH_ZLIB=OFF \
  -DWITH_LZO=OFF \
  -DWITH_JPEG=OFF \
  -DWITH_PNG=OFF \
  -DWITH_SDL=OFF \
  -DWITH_GTK=OFF \
  -DWITH_LIBSSH2=OFF \
  -DWITH_GNUTLS=OFF \
  -DWITH_GCRYPT=OFF \
  -DWITH_FFMPEG=OFF \
  -DWITH_TIGHTVNC_FILETRANSFER=OFF \
  -WITH_IPv6=ON \
  -DWITH_WEBSOCKETS=OFF \
  -DWITH_SASL=OFF \
  -DWITH_OPENSSL=OFF \
  -DOPENSSL_ROOT_DIR="${SYSROOT_USR_DIR}" \
  -DOPENSSL_LIBRARIES="${SYSROOT_USR_DIR}/lib/libssl.a;${SYSROOT_USR_DIR}/lib/libcrypto.a" \
  -DOPENSSL_INCLUDE_DIR="${SYSROOT_USR_DIR}/include" \
  -DCMAKE_BUILD_TYPE=Release \
  -DCMAKE_FIND_ROOT_PATH="${SYSROOT_DIR}" \
  -DCMAKE_SYSROOT="${SYSROOT_DIR}" \
  -DCMAKE_STAGING_PREFIX="${SYSROOT_USR_DIR}"

make -j$(nproc)
make install

# ==================================================================

cd "${LIB_BUILD_DIR}/freetype-${FREETYPE_VER}"
[ -d "build" ] && rm -rf build
mkdir -p build && cd build
cmake -S .. -B . \
    -DCMAKE_BUILD_TYPE=Release \
    -DFT_DISABLE_HARFBUZZ=ON \
    -DBUILD_SHARED_LIBS=OFF \
    -DFT_DISABLE_BROTLI=ON \
    -DFT_DISABLE_BZIP2=ON \
    -DFT_DISABLE_PNG=ON \
    -DFT_DISABLE_DOCS=ON \
    -DFT_DISABLE_TESTS=ON \
    -DCMAKE_INSTALL_PREFIX="${SYSROOT_USR_DIR}" \
    -DCMAKE_FIND_ROOT_PATH="${SYSROOT_DIR}" \
    -DCMAKE_SYSROOT="${SYSROOT_DIR}" \
    -DCMAKE_STAGING_PREFIX="${SYSROOT_USR_DIR}" \
    -DZLIB_LIBRARY="${SYSROOT_USR_DIR}/lib/libz.a" \
    -DZLIB_INCLUDE_DIR="${SYSROOT_USR_DIR}/include" \
    -DZLIB_USE_STATIC=ON

make -j$(nproc)
make install

# ==================================================================

cd "${TOP}"
export PATH="${_ORIG_PATH}"
unset SYSROOT PREFIX TARGET TOOLCHAIN TOOLCHAIN_PATH
unset CC CXX CPP LD AR ARFLAGS AS NM RANLIB STRIP OBJCOPY OBJDUMP
unset CFLAGS CXXFLAGS LDFLAGS
unset CFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LDFLAGS_FOR_TARGET
unset SUBARCH SUBMODE CFLAGS_TOOLSET CFLAGS_TARGET _ORIG_PATH