vcpkg_check_linkage(ONLY_DYNAMIC_LIBRARY)

set(key NOTFOUND)
if(VCPKG_TARGET_IS_WINDOWS)
	set(key "windows-${VCPKG_TARGET_ARCHITECTURE}")
elseif(VCPKG_TARGET_IS_OSX)
	set(key "macosx-${VCPKG_TARGET_ARCHITECTURE}")
elseif(VCPKG_TARGET_IS_LINUX)
	set(key "linux-${VCPKG_TARGET_ARCHITECTURE}")
endif()

set(ARCHIVE NOTFOUND)
set(DEBUG_INFO_ARCHIVE NOTFOUND)
# For convenient updates, use 
# vcpkg install shader-slang --cmake-args=-DVCPKG_SHADER_SLANG_UPDATE=1
if(key STREQUAL "windows-x64" OR VCPKG_SHADER_SLANG_UPDATE)
	vcpkg_download_distfile(
		ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-windows-x86_64.zip"
		FILENAME "slang-${VERSION}-windows-x86_64.zip"
		SHA512 c1c0c016e955f0c67b6bad1b3e3074bebbd9d3395a2a53075cfb6695cce49e468afffeff8c3133dc84083f4504fc284a690fe630256c8d50a9319ae518e1304a
	)
	vcpkg_download_distfile(
		DEBUG_INFO_ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-windows-x86_64-debug-info.zip"
		FILENAME "slang-${VERSION}-windows-x86_64-debug-info.zip"
		SHA512 13b4579eb49ac3356b52d384fa2aac26c08877b36fb50c586be2352256f7fa543fbf5ae956e52959dfeff112f172132718212e5e983dc904b82054b0d434d83e
	)
endif()
if(key STREQUAL "windows-arm64" OR VCPKG_SHADER_SLANG_UPDATE)
	vcpkg_download_distfile(
		ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-windows-aarch64.zip"
		FILENAME "slang-${VERSION}-windows-aarch64.zip"
		SHA512 d094583d64dd33ea4cc089b530c2f559054ad2ba3727e0b5e7a693bafc918fc249beb3526f3d25ac0241b50e807a167d77d83bf5e2ff979094e08ae0a8463c7a
	)
	vcpkg_download_distfile(
		DEBUG_INFO_ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-windows-aarch64-debug-info.zip"
		FILENAME "slang-${VERSION}-windows-aarch64-debug-info.zip"
		SHA512 ebaa9831e7a3296c565a77c0d1666c69cd6eadb45069203a99006aea5fc163651e4ebddcb8153af33fb799ba1346530e998553ae221910c37b31b52826fb6783
	)
endif()
if(key STREQUAL "macosx-x64" OR VCPKG_SHADER_SLANG_UPDATE)
	vcpkg_download_distfile(
		ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-macos-x86_64.zip"
		FILENAME "slang-${VERSION}-macos-x86_64.zip"
		SHA512 c5b502a8fa2cdb8118906827c3c67fd2f866644478d635a7ae682dda08099f6d9e6834109ef0d954b87a5769245dd4ea26bb692c053bcd860938a8d75223d0cc
	)
	vcpkg_download_distfile(
		DEBUG_INFO_ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-macos-x86_64-debug-info.zip"
		FILENAME "slang-${VERSION}-macos-x86_64-debug-info.zip"
		SHA512 d46725b3827cccb3e168056b937dff67fc331368e90855e6bac1f0f8cc7c7259800b008fe00508fe6368ccee612aed26d7d94fefafdbabe60a3aab1bb59263d1
	)
endif()
if(key STREQUAL "macosx-arm64" OR VCPKG_SHADER_SLANG_UPDATE)
	vcpkg_download_distfile(
		ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-macos-aarch64.zip"
		FILENAME "slang-${VERSION}-macos-aarch64.zip"
		SHA512 de583e04e15b15b98afd817914514c93f96915ea30ebc03a7ece5e23b7f4bb266d43e4e878c7e4b33dc1bf0def0186d607334d6246e26f9ca6b0077909aacf88
	)
	vcpkg_download_distfile(
		DEBUG_INFO_ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-macos-aarch64-debug-info.zip"
		FILENAME "slang-${VERSION}-macos-aarch64-debug-info.zip"
		SHA512 a1d54849e01b51ba6435d16877219d9a562cb5245e0a21f653abd6c4a5d4aa9c97fceec4a66e8659b7ace37defde59ea8e60a1adb0fa7e4a674151d5186c88d2
	)
endif()
if(key STREQUAL "linux-x64" OR VCPKG_SHADER_SLANG_UPDATE)
	vcpkg_download_distfile(
		ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-linux-x86_64.zip"
		FILENAME "slang-${VERSION}-linux-x86_64.zip"
		SHA512 580eb88d0e840d9428c8b84d2f67e9c11e0fe41d76c1b502d80d1c3a607e4b9b0b0c193f52ccb549d13f14aac70d7c4bb91af08de4352ec1a3674cfedf3e1542
	)
	vcpkg_download_distfile(
		DEBUG_INFO_ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-linux-x86_64-debug-info.zip"
		FILENAME "slang-${VERSION}-linux-x86_64-debug-info.zip"
		SHA512 644b1653132376fb669898dbf749cb906c0d6290fe183ba4898fda34f5ac2199023a8bdc829e05ca1e451e92e08efd78869f784fe839a82f961edbf8a393616b
	)
endif()
if(key STREQUAL "linux-arm64" OR VCPKG_SHADER_SLANG_UPDATE)
	vcpkg_download_distfile(
		ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-linux-aarch64.zip"
		FILENAME "slang-${VERSION}-linux-aarch64.zip"
		SHA512 dcad6cbbfff302d80c244f34d6e84dad60c084749637a21ae01ea4ca57181a524bf9229e4ba8e8d7038655e5fa7bc8aa548e7a0c2b65c4212c2f2e0dd257f641
	)
	vcpkg_download_distfile(
		DEBUG_INFO_ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-linux-aarch64-debug-info.zip"
		FILENAME "slang-${VERSION}-linux-aarch64-debug-info.zip"
		SHA512 457a11b91d8fdcd04d504dda79700c2c0fc70ed14b67195bc24831b54f0470a43e5d5b1ab1a5c53077bcce51ee8b070f5d65cf8c3623d8d3c81460f92df09c51
	)
endif()
if(NOT ARCHIVE)
	message(FATAL_ERROR "Unsupported platform. Please implement me!")
endif()

vcpkg_extract_source_archive(
	BINDIST_PATH
	ARCHIVE "${ARCHIVE}"
	NO_REMOVE_ONE_LEVEL
)

if(DEBUG_INFO_ARCHIVE)
	vcpkg_extract_source_archive(
		DEBUG_INFO_PATH
		ARCHIVE "${DEBUG_INFO_ARCHIVE}"
		NO_REMOVE_ONE_LEVEL
	)
endif()

if(VCPKG_SHADER_SLANG_UPDATE)
	message(STATUS "All downloads are up-to-date.")
	message(FATAL_ERROR "Stopping due to VCPKG_SHADER_SLANG_UPDATE being enabled.")
endif()

file(GLOB libs
	"${BINDIST_PATH}/lib/*.lib"
	"${BINDIST_PATH}/lib/*.dylib"
	"${BINDIST_PATH}/lib/*.so"
	"${BINDIST_PATH}/lib/*.so.0.${VERSION}" # On linux, some of the .so files are postfixed by the version.
)
file(INSTALL ${libs} DESTINATION "${CURRENT_PACKAGES_DIR}/lib")

file(GLOB dyn_libs
	"${BINDIST_PATH}/lib/*.dylib"
	"${BINDIST_PATH}/lib/*.so"
)

if(VCPKG_TARGET_IS_WINDOWS)
  file(GLOB dlls "${BINDIST_PATH}/bin/*.dll")
  list(APPEND dyn_libs ${dlls})
  file(INSTALL ${dlls} DESTINATION "${CURRENT_PACKAGES_DIR}/bin")

  # In windows, the debug symbols are on the root directory of the debug archive
  if(DEBUG_INFO_PATH)
    file(GLOB pdb_files "${DEBUG_INFO_PATH}/*.pdb")
    if(pdb_files)
      file(INSTALL ${pdb_files} DESTINATION "${CURRENT_PACKAGES_DIR}/bin")
    endif()
  endif()
endif()

# In other platfroms, the debug symbols are structured under lib.
# There are also debug symbols for the tools under bin but we ignore these
if(NOT VCPKG_TARGET_IS_WINDOWS AND DEBUG_INFO_PATH)
  file(GLOB debug_sym_libs "${DEBUG_INFO_PATH}/lib/*")
  if(debug_sym_libs)
    file(INSTALL ${debug_sym_libs} DESTINATION "${CURRENT_PACKAGES_DIR}/lib")
  endif()
endif()

if(NOT VCPKG_BUILD_TYPE)
  file(INSTALL "${CURRENT_PACKAGES_DIR}/lib" DESTINATION "${CURRENT_PACKAGES_DIR}/debug")
  if(VCPKG_TARGET_IS_WINDOWS)
    file(INSTALL "${CURRENT_PACKAGES_DIR}/bin" DESTINATION "${CURRENT_PACKAGES_DIR}/debug")
  endif()
endif()

# On macos, slang has signed their binaries
# vcpkg wants to be helpful and update the rpath as it moves binaries around but this 
# breaks the code signature and makes the binaries useless
# Removing the signature is rude so instead we will disable rpath fixup
if(VCPKG_TARGET_IS_OSX OR VCPKG_TARGET_IS_IOS)
  set(VCPKG_FIXUP_MACHO_RPATH OFF)
endif()

# Must manually copy some tool dependencies since vcpkg can't copy them automagically for us
file(INSTALL ${dyn_libs} DESTINATION "${CURRENT_PACKAGES_DIR}/tools/shader-slang")
vcpkg_copy_tools(TOOL_NAMES slangc slangd slangi slang SEARCH_DIR "${BINDIST_PATH}/bin")

file(GLOB headers "${BINDIST_PATH}/include/*.h")
file(INSTALL ${headers} DESTINATION "${CURRENT_PACKAGES_DIR}/include")

block(SCOPE_FOR VARIABLES)
	set(VCPKG_BUILD_TYPE Release) # no debug binaries anyways

	if (VCPKG_TARGET_IS_WINDOWS)
		file(COPY "${BINDIST_PATH}/cmake" DESTINATION "${CURRENT_PACKAGES_DIR}")
		vcpkg_cmake_config_fixup(CONFIG_PATH cmake PACKAGE_NAME slang)
	else()
		file(COPY "${BINDIST_PATH}/lib/cmake/slang" DESTINATION "${CURRENT_PACKAGES_DIR}")
		vcpkg_cmake_config_fixup(CONFIG_PATH slang PACKAGE_NAME slang)
	endif()

	vcpkg_replace_string("${CURRENT_PACKAGES_DIR}/share/slang/slangConfig.cmake"
		[[HINTS "${PACKAGE_PREFIX_DIR}/bin" ENV PATH]]
		[[PATHS "${PACKAGE_PREFIX_DIR}/tools/shader-slang" NO_DEFAULT_PATH REQUIRED]]
	)
	vcpkg_replace_string("${CURRENT_PACKAGES_DIR}/share/slang/slangConfigVersion.cmake"
		[[if("${CMAKE_SIZEOF_VOID_P}" STREQUAL ""]]
		[[if(#[=[ host tool ]=] "TRUE"]] 
	)
endblock()

vcpkg_install_copyright(
	FILE_LIST "${BINDIST_PATH}/LICENSE"
	COMMENT #[[ from README ]] [[
The Slang code itself is under the Apache 2.0 with LLVM Exception license.

Builds of the core Slang tools depend on the following projects, either automatically or optionally, which may have their own licenses:

* [`glslang`](https://github.com/KhronosGroup/glslang) (BSD)
* [`lz4`](https://github.com/lz4/lz4) (BSD)
* [`miniz`](https://github.com/richgel999/miniz) (MIT)
* [`spirv-headers`](https://github.com/KhronosGroup/SPIRV-Headers) (Modified MIT)
* [`spirv-tools`](https://github.com/KhronosGroup/SPIRV-Tools) (Apache 2.0)
* [`ankerl::unordered_dense::{map, set}`](https://github.com/martinus/unordered_dense) (MIT)

Slang releases may include [slang-llvm](https://github.com/shader-slang/slang-llvm) which includes [LLVM](https://github.com/llvm/llvm-project) under the license:

* [`llvm`](https://llvm.org/docs/DeveloperPolicy.html#new-llvm-project-license-framework) (Apache 2.0 License with LLVM exceptions)
]])