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)
# 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-${VERSION}-windows-x86_64.zip"
		SHA512 4cfbca81df3342bc1e329929102f020cd3771e3877e4cde89e499da41b0903602f92de7d69c3adee4e56240d9fe887e0748b2a57d94dd468fcee5bf059090ff0
	)
endif()
if(key STREQUAL "windows-arm64" OR VCPKG_SHADER_SLANG_UPDATE)
	vcpkg_download_distfile(
		ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-windows-aarch64.zip"
		FILENAME "slang-${VERSION}-windows-aarch64.zip"
		SHA512 f56246c054ae3a87726b71a19307f09efa1cd6355a0d44802eead247bb9b837e4073476b3cebb31ff2dda244623344c0741e262cf258f6ca89179e340859196c
	)
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-${VERSION}-macos-x86_64.zip"
		SHA512 2e491a075cf6a20cd5589470955448cd9efa17566a493ceb96e6fd4192d1261f312535f07e0cb1bf195b4b9f12e46ac635839f509c140d780d6a49138d255075
	)
endif()
if(key STREQUAL "macosx-arm64" OR VCPKG_SHADER_SLANG_UPDATE)
	vcpkg_download_distfile(
		ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-macos-aarch64.zip"
		FILENAME "slang-${VERSION}-macos-aarch64.zip"
		SHA512 1fdd1a580b6b96af381445a5aab2666f05cd57e9435c7df7e6ba520e9d5ef3a9ca77c2df0acebd0035532e9a2a729c3364fb886fcb8dc4f0577bf71de4616f12
	)
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-${VERSION}-linux-x86_64.zip"
		SHA512 5d1c658a4bd3315def327561802e65ad89e52bb5c95cd21c0e7941737e59f0f11ad86b30b81bdafd756e8a04d4af2f830a0f7559277bc779f2ddaada1d7d1c16
	)
endif()
if(key STREQUAL "linux-arm64" OR VCPKG_SHADER_SLANG_UPDATE)
	vcpkg_download_distfile(
		ARCHIVE
		URLS "https://github.com/shader-slang/slang/releases/download/v${VERSION}/slang-${VERSION}-linux-aarch64.zip"
		FILENAME "slang-${VERSION}-linux-aarch64.zip"
		SHA512 997a51dfe3f45e2f6e0630f64dcdedb26e2a3d92756ddb2156612ae59ec3ad3998edc9638062a097a1eed044bd1f2a3d48767558f5dcf331fb4034f7b1837160
	)
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(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"
)
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")
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 SEARCH_DIR "${BINDIST_PATH}/bin")

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

vcpkg_install_copyright(
	FILE_LIST "${BINDIST_PATH}/LICENSE"
	COMMENT #[[ from README ]] [[
The Slang code itself is under the MIT 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)
]])