#!/bin/bash

# source the common build functions
SCRIPT_DIR=$(dirname "$0")
source "${SCRIPT_DIR}/ios_build_functions.sh"

function setup ()
{
    if [ -f "${ROOT_PATH}/External/ios-openssl/lib/libssl.a" ] && [ -f "${ROOT_PATH}/External/ios-openssl/lib/libcrypto.a" ] && [ -d "${ROOT_PATH}/External/ios-openssl/include" ]
    then
        echo "No update needed."
        exit 0
    fi

    LIBRARY_NAME="OpenSSL"

    rm -rf "${ROOT_PATH}/External/ios-openssl/include" "External/ios-openssl/lib"
}

function cleanup () 
{
    rm -rf "/tmp/openssl"
    rm -rf "/tmp/openssl-*.log"
}

function build_ssl () 
{
    rm -rf "/tmp/openssl"
    cp -r "${ROOT_PATH}/External/openssl" "/tmp/"
    pushd "/tmp/openssl" > /dev/null

    LOG="/tmp/openssl-${ARCH}.log"

    if [ "${ARCH}" == "arm64" ] || [ "${ARCH}" == "x86_64" ]
    then
        HOST="BSD-generic64"
        CONFIG="no-gost no-asm enable-ec_nistp_64_gcc_128"
    else
        HOST="BSD-generic32"
        CONFIG="no-gost no-asm"
        perl -i -pe 's|static volatile sig_atomic_t intr_signal|static volatile int intr_signal|' crypto/ui/ui_openssl.c
    fi
    echo "$LOG"

    ./Configure ${HOST} ${CONFIG} --openssldir="/tmp/openssl-${ARCH}" >> "${LOG}" 2>&1
    perl -i -pe "s|^CC= gcc|CC= ${CLANG} -miphoneos-version-min=${IPHONEOS_DEPLOYMENT_TARGET} -arch ${ARCH} -fembed-bitcode |g" Makefile >> "${LOG}" 2>&1
    perl -i -pe "s|^CFLAG= (.*)|CFLAG= -isysroot ${SDKROOT} \$1|g" Makefile >> "${LOG}" 2>&1
    make >> "${LOG}" 2>&1

    make install_sw >> "${LOG}" 2>&1
    popd > /dev/null
    rm -rf "/tmp/openssl"

    BUILT_CRYPTO_PATHS+=("/tmp/openssl-${ARCH}/lib/libcrypto.a")
    BUILT_SSL_PATHS+=("/tmp/openssl-${ARCH}/lib/libssl.a")
}

function fat_binary ()
{
    echo "Building fat binary..."

    mkdir -p "${ROOT_PATH}/External/ios-openssl/include"
    cp -r /tmp/openssl-i386/include/openssl "${ROOT_PATH}/External/ios-openssl/include/"

    mkdir -p "${ROOT_PATH}/External/ios-openssl/lib"

    lipo -create "${BUILT_CRYPTO_PATHS[@]}" -output "${ROOT_PATH}/External/ios-openssl/lib/libcrypto.a"
    lipo -create "${BUILT_SSL_PATHS[@]}" -output "${ROOT_PATH}/External/ios-openssl/lib/libssl.a"

    echo "Building done."
}

cleanup
build_all_archs setup build_ssl fat_binary
cleanup