#!/bin/bash

set -e

function apply_patches()
{
    DEP_SRC_DIR=$1
    DEP_PATCH_DIR=$2
    
    CURRENT_DIR=$(pwd)

    pushd ${CURRENT_DIR}

    cd /tmp

    for FILE in ${CURRENT_DIR}/${DEP_PATCH_DIR}/*.patch; do
        echo Applying patch: $FILE
        git apply --directory ${CURRENT_DIR}/${DEP_SRC_DIR} --unsafe-path $FILE
    done

    popd
}

function reverse_patches()
{
    DEP_SRC_DIR=$1
    DEP_PATCH_DIR=$2
    
    CURRENT_DIR=$(pwd)

    pushd ${CURRENT_DIR}

    cd /tmp

    REVERSED_PATCHES=$(ls -1 ${CURRENT_DIR}/${DEP_PATCH_DIR}/*.patch | sort -r)

    for FILE in $REVERSED_PATCHES; do
        echo Reverse patch: $FILE
        git apply --reverse --directory ${CURRENT_DIR}/${DEP_SRC_DIR} --unsafe-path $FILE
    done

    popd
}

ASIO_SRC_DIR="Sources/ASIO"
ASIO_PATCH_DIR="Sources/OpenVPN3/deps/asio/patches"

MBEDTLS_SRC_DIR="Sources/mbedTLS"
MBEDTLS_PATCH_DIR="Sources/OpenVPN3/deps/mbedtls/patches"

if [ "$1" = "--reverse" ]; then
    reverse_patches ${ASIO_SRC_DIR} ${ASIO_PATCH_DIR}
    reverse_patches ${MBEDTLS_SRC_DIR} ${MBEDTLS_PATCH_DIR}
else
    apply_patches ${ASIO_SRC_DIR} ${ASIO_PATCH_DIR}
    apply_patches ${MBEDTLS_SRC_DIR} ${MBEDTLS_PATCH_DIR}
fi