if(VCPKG_CMAKE_SYSTEM_NAME)
    message(FATAL_ERROR "This port is only for building openssl on Windows Desktop")
endif()

include(vcpkg_common_functions)
set(OPENSSL_VERSION 1.0.2q)

vcpkg_find_acquire_program(PERL)

get_filename_component(PERL_EXE_PATH ${PERL} DIRECTORY)
set(ENV{PATH} "$ENV{PATH};${PERL_EXE_PATH}")

vcpkg_download_distfile(ARCHIVE
    URLS "https://www.openssl.org/source/openssl-${OPENSSL_VERSION}.tar.gz" "https://www.openssl.org/source/old/1.0.2/openssl-${OPENSSL_VERSION}.tar.gz"
    FILENAME "openssl-${OPENSSL_VERSION}.tar.gz"
    SHA512 403e6cad42db3ba860c3fa4fa81c1b7b02f0b873259e5c19a7fc8e42de0854602555f1b1ca74f4e3a7737a4cbd3aac063061e628ec86534586500819fae7fec0
)

vcpkg_extract_source_archive_ex(
  OUT_SOURCE_PATH SOURCE_PATH
  ARCHIVE ${ARCHIVE}
  PATCHES
    ConfigureIncludeQuotesFix.patch
    STRINGIFYPatch.patch
    EnableWinARM32.patch
    EmbedSymbolsInStaticLibsZ7.patch
    EnableWinARM64.patch
)

vcpkg_find_acquire_program(NASM)
get_filename_component(NASM_EXE_PATH ${NASM} DIRECTORY)
set(ENV{PATH} "${NASM_EXE_PATH};$ENV{PATH}")

vcpkg_find_acquire_program(JOM)

set(CONFIGURE_COMMAND ${PERL} Configure
    enable-static-engine
    enable-capieng
    no-ssl2
    -utf-8
)

if(VCPKG_TARGET_ARCHITECTURE STREQUAL "x86")
    set(OPENSSL_ARCH VC-WIN32)
    set(OPENSSL_DO "ms\\do_nasm.bat")
elseif(VCPKG_TARGET_ARCHITECTURE STREQUAL "x64")
    set(OPENSSL_ARCH VC-WIN64A)
    set(OPENSSL_DO "ms\\do_win64a.bat")
elseif(VCPKG_TARGET_ARCHITECTURE STREQUAL "arm")
    set(OPENSSL_ARCH VC-WIN32)
    set(OPENSSL_DO "ms\\do_ms.bat")
    set(CONFIGURE_COMMAND ${CONFIGURE_COMMAND}
        no-asm
        -D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE
    )
elseif(VCPKG_TARGET_ARCHITECTURE STREQUAL "arm64")
    set(OPENSSL_ARCH VC-WIN32)
    set(OPENSSL_DO "ms\\do_ms.bat")
    set(CONFIGURE_COMMAND ${CONFIGURE_COMMAND}
        no-asm
        -D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE
    )
else()
    message(FATAL_ERROR "Unsupported target architecture: ${VCPKG_TARGET_ARCHITECTURE}")
endif()

if(VCPKG_LIBRARY_LINKAGE STREQUAL dynamic)
    set(OPENSSL_MAKEFILE "ms\\ntdll.mak")
else()
    set(OPENSSL_MAKEFILE "ms\\nt.mak")
endif()

file(REMOVE_RECURSE ${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-rel ${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg)


if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "release")

    # Copy openssl sources.
    message(STATUS "Copying openssl release source files...")
    file(GLOB OPENSSL_SOURCE_FILES ${SOURCE_PATH}/*)
    foreach(SOURCE_FILE ${OPENSSL_SOURCE_FILES})
        file(COPY ${SOURCE_FILE} DESTINATION "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-rel")
    endforeach()
    message(STATUS "Copying openssl release source files... done")
    set(SOURCE_PATH_RELEASE "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-rel")

    set(OPENSSLDIR_RELEASE ${CURRENT_PACKAGES_DIR})

    message(STATUS "Configure ${TARGET_TRIPLET}-rel")
    vcpkg_execute_required_process(
        COMMAND ${CONFIGURE_COMMAND} ${OPENSSL_ARCH} "--prefix=${OPENSSLDIR_RELEASE}" "--openssldir=${OPENSSLDIR_RELEASE}" -FS
        WORKING_DIRECTORY ${SOURCE_PATH_RELEASE}
        LOGNAME configure-perl-${TARGET_TRIPLET}-${CMAKE_BUILD_TYPE}-rel
    )
    vcpkg_execute_required_process(
        COMMAND ${OPENSSL_DO}
        WORKING_DIRECTORY ${SOURCE_PATH_RELEASE}
        LOGNAME configure-do-${TARGET_TRIPLET}-${CMAKE_BUILD_TYPE}-rel
    )
    message(STATUS "Configure ${TARGET_TRIPLET}-rel done")

    message(STATUS "Build ${TARGET_TRIPLET}-rel")
    # Openssl's buildsystem has a race condition which will cause JOM to fail at some point.
    # This is ok; we just do as much work as we can in parallel first, then follow up with a single-threaded build.
    make_directory(${SOURCE_PATH_RELEASE}/inc32/openssl)
    execute_process(
        COMMAND ${JOM} -k -j $ENV{NUMBER_OF_PROCESSORS} -f ${OPENSSL_MAKEFILE}
        WORKING_DIRECTORY ${SOURCE_PATH_RELEASE}
        OUTPUT_FILE ${CURRENT_BUILDTREES_DIR}/build-${TARGET_TRIPLET}-rel-0-out.log
        ERROR_FILE ${CURRENT_BUILDTREES_DIR}/build-${TARGET_TRIPLET}-rel-0-err.log
    )
    vcpkg_execute_required_process(
        COMMAND nmake -f ${OPENSSL_MAKEFILE} install
        WORKING_DIRECTORY ${SOURCE_PATH_RELEASE}
        LOGNAME build-${TARGET_TRIPLET}-rel-1)

    message(STATUS "Build ${TARGET_TRIPLET}-rel done")
endif()


if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "debug")
    # Copy openssl sources.
    message(STATUS "Copying openssl debug source files...")
    file(GLOB OPENSSL_SOURCE_FILES ${SOURCE_PATH}/*)
    foreach(SOURCE_FILE ${OPENSSL_SOURCE_FILES})
        file(COPY ${SOURCE_FILE} DESTINATION "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg")
    endforeach()
    message(STATUS "Copying openssl debug source files... done")
    set(SOURCE_PATH_DEBUG "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg")

    set(OPENSSLDIR_DEBUG ${CURRENT_PACKAGES_DIR}/debug)

    message(STATUS "Configure ${TARGET_TRIPLET}-dbg")
    vcpkg_execute_required_process(
        COMMAND ${CONFIGURE_COMMAND} debug-${OPENSSL_ARCH} "--prefix=${OPENSSLDIR_DEBUG}" "--openssldir=${OPENSSLDIR_DEBUG}" -FS
        WORKING_DIRECTORY ${SOURCE_PATH_DEBUG}
        LOGNAME configure-perl-${TARGET_TRIPLET}-${CMAKE_BUILD_TYPE}-dbg
    )
    vcpkg_execute_required_process(
        COMMAND ${OPENSSL_DO}
        WORKING_DIRECTORY ${SOURCE_PATH_DEBUG}
        LOGNAME configure-do-${TARGET_TRIPLET}-${CMAKE_BUILD_TYPE}-dbg
    )
    message(STATUS "Configure ${TARGET_TRIPLET}-dbg done")

    message(STATUS "Build ${TARGET_TRIPLET}-dbg")
    make_directory(${SOURCE_PATH_DEBUG}/inc32/openssl)
    execute_process(
        COMMAND ${JOM} -k -j $ENV{NUMBER_OF_PROCESSORS} -f ${OPENSSL_MAKEFILE}
        WORKING_DIRECTORY ${SOURCE_PATH_DEBUG}
        OUTPUT_FILE ${CURRENT_BUILDTREES_DIR}/build-${TARGET_TRIPLET}-dbg-0-out.log
        ERROR_FILE ${CURRENT_BUILDTREES_DIR}/build-${TARGET_TRIPLET}-dbg-0-err.log
    )
    vcpkg_execute_required_process(
        COMMAND nmake -f ${OPENSSL_MAKEFILE} install
        WORKING_DIRECTORY ${SOURCE_PATH_DEBUG}
        LOGNAME build-${TARGET_TRIPLET}-dbg-1)

    message(STATUS "Build ${TARGET_TRIPLET}-dbg done")
endif()


file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
file(REMOVE
    ${CURRENT_PACKAGES_DIR}/debug/bin/openssl.exe
    ${CURRENT_PACKAGES_DIR}/debug/openssl.cnf
    ${CURRENT_PACKAGES_DIR}/openssl.cnf
)

file(MAKE_DIRECTORY ${CURRENT_PACKAGES_DIR}/tools/openssl/)
file(RENAME ${CURRENT_PACKAGES_DIR}/bin/openssl.exe ${CURRENT_PACKAGES_DIR}/tools/openssl/openssl.exe)

vcpkg_copy_tool_dependencies(${CURRENT_PACKAGES_DIR}/tools/openssl)

if(VCPKG_LIBRARY_LINKAGE STREQUAL static)
    # They should be empty, only the exes deleted above were in these directories
    file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/bin/)
    file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/bin/)
endif()

file(READ "${CURRENT_PACKAGES_DIR}/include/openssl/dtls1.h" _contents)
string(REPLACE "<winsock.h>" "<winsock2.h>" _contents "${_contents}")
file(WRITE "${CURRENT_PACKAGES_DIR}/include/openssl/dtls1.h" "${_contents}")

file(READ "${CURRENT_PACKAGES_DIR}/include/openssl/rand.h" _contents)
string(REPLACE "#  include <windows.h>" "#ifndef _WINSOCKAPI_\n#define _WINSOCKAPI_\n#endif\n#  include <windows.h>" _contents "${_contents}")
file(WRITE "${CURRENT_PACKAGES_DIR}/include/openssl/rand.h" "${_contents}")

vcpkg_copy_pdbs()

file(COPY ${CMAKE_CURRENT_LIST_DIR}/usage DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT})
file(INSTALL ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT} RENAME copyright)

vcpkg_test_cmake(PACKAGE_NAME OpenSSL MODULE)