# -*- Mode: Python -*- vi:si:et:sw=4:sts=4:ts=4:syntax=python
import shutil
from cerbero.utils import shell

from cerbero.tools.libtool import LibtoolLibrary

class Recipe(recipe.Recipe):
    name = 'moltenvk'
    version = '1.2.182.0'
    licenses = [License.Apachev2]
    stype = SourceType.CUSTOM
    btype = BuildType.CUSTOM

    files_bins = [
        'glslangValidator',
        'glslc',
        'spirv-as',
        'spirv-cfg',
        'spirv-cross',
        'spirv-dis',
        'spirv-link',
        'spirv-opt',
        'spirv-reduce',
        'spirv-remap',
        'spirv-val',
        'vulkaninfo',
    ]

    files_libs = [
        'libMoltenVK'
    ]

    files_devel = [
        'include/vulkan',
        'include/MoltenVK',
    ]

    def prepare(self):
        if self.config.target_platform not in (Platform.IOS, Platform.DARWIN):
            raise InvalidRecipeError(self, "Invalid platform")

        # no binaries available on iOS
        if self.config.target_platform == Platform.IOS:
            self.files_bins = []

        if self.config.target_platform == Platform.DARWIN:
            # FIXME: libvulkan.dylib doesn't currently work with the
            # id/signature modifications we do later and may need to be rebuilt
            #self.files_libs += ['libvulkan']
            # no libvulkan.a
            self.library_type = LibraryType.SHARED

    async def install(self):
        # only copy once for the architectures supported by the libraries
        if self.config.target_platform not in (Platform.IOS, Platform.DARWIN):
            return;

        if self.config.target_platform == Platform.IOS and self.config.target_arch != Architecture.ARM64:
            return;

        if self.config.target_platform == Platform.DARWIN \
               and self.config.target_arch not in [Architecture.ARM64, Architecture.X86_64]:
            return

        srcdir = self.config.moltenvk_prefix

        prefix = self.config.prefix
        bindir = os.path.join(prefix, 'bin')
        libdir = os.path.join(prefix, 'lib')

        to_copy = []

        for bin in self.files_bins:
            to_copy += [
                (os.path.join(srcdir, 'macOS', 'bin', bin),
                 os.path.join(bindir, bin), False)
            ]

        for d in ('vulkan', 'MoltenVK', 'vulkan-portability'):
            to_copy += [
                (os.path.join(srcdir, 'MoltenVK', 'include', d),
                 os.path.join(prefix, 'include', d), True)
            ]

        libmoltenvk_shared = os.path.join(libdir, 'libMoltenVK.dylib')
        libmoltenvk_static = os.path.join(libdir, 'libMoltenVK.a')
        libvulkan = os.path.join(libdir, 'libvulkan.dylib')
        libvulkan1 = os.path.join(libdir, 'libvulkan.1.dylib')

        if self.config.target_platform == Platform.DARWIN:
            to_copy += [
                #(os.path.join(srcdir, 'macOS', 'lib', 'libvulkan.dylib'),
                # libvulkan, False),
                #(os.path.join(srcdir, 'macOS', 'lib', 'libvulkan.1.dylib'),
                # libvulkan1, False),
                (os.path.join(srcdir, 'MoltenVK', 'dylib', 'macOS', 'libMoltenVK.dylib'),
                 libmoltenvk_shared, False),
                (os.path.join(srcdir, 'MoltenVK', 'MoltenVK.xcframework', 'macos-arm64_x86_64', 'libMoltenVK.a'),
                 libmoltenvk_static, False)
            ]
        elif self.config.target_platform == Platform.IOS:
            to_copy += [
                (os.path.join(srcdir, 'MoltenVK', 'dylib', 'iOS', 'libMoltenVK.dylib'),
                         libmoltenvk_shared, False),
                (os.path.join(srcdir, 'MoltenVK', 'MoltenVK.xcframework', 'ios-arm64', 'libMoltenVK.a'),
                         libmoltenvk_static, False)
            ]

        for src, dest, is_dir in to_copy:
            if is_dir:
                shell.copy_dir(src, dest)
            else:
                if not os.path.exists(os.path.dirname(dest)):
                    os.makedirs(os.path.dirname(dest))
                shutil.copy(src, dest)

        if self.config.target_platform == Platform.DARWIN:
            binaries = [os.path.join(bindir, x) for x in self.files_bins]
            for f in [libmoltenvk_shared]: # libvulkan, libvulkan1
                # Because we are editing the binary, we need to the remove the signature.
                # The process would crash otherwise as not loadable
                await shell.async_call(['codesign', '--remove-signature', f], logfile=self.logfile)
                # we need to remove the @rpath from the libname
                await shell.async_call(['install_name_tool', '-id', f, f], logfile=self.logfile)
                # The SDK provides universal binaries, we need to convert them into thin binaries so
                # that the merge step can merge them back
                await shell.async_call(['lipo', '-thin', self.config.target_arch, f, '-output', f], logfile=self.logfile)
            # no need to change id for static libraries
            for f in binaries + [libmoltenvk_static]:
                # Because we are editing the binary, we need to the remove the signature.
                # The process would crash otherwise as not loadable
                await shell.async_call(['codesign', '--remove-signature', f], logfile=self.logfile)
                # The SDK provides universal binaries, we need to convert them into thin binaries so
                # that the merge step can merge them back
                await shell.async_call(['lipo', '-thin', self.config.target_arch, f, '-output', f], logfile=self.logfile)

        LibtoolLibrary('vulkan', None, None, None, libdir,
                self.config.target_platform).save()
        LibtoolLibrary('MoltenVK', None, None, None, libdir,
                self.config.target_platform).save()