import os

from conan import ConanFile
from conan.tools.cmake import CMake, CMakeDeps, CMakeToolchain, cmake_layout
from conan.tools.files import copy, get, replace_in_file, rmdir

required_conan_version = ">=1.52.0"


class EAThreadConan(ConanFile):
    name = "eathread"
    description = "EAThread is a C++ library that provides a platform-independent interface for threading."
    topics = ("eastl", "threading")
    license = "BSD-3-Clause"
    url = "https://github.com/conan-io/conan-center-index"
    homepage = "https://github.com/electronicarts/EAThread"

    package_type = "library"
    settings = "os", "arch", "compiler", "build_type"
    options = {
        "shared": [True, False],
        "fPIC": [True, False],
    }
    default_options = {
        "shared": False,
        "fPIC": True,
    }

    def config_options(self):
        if self.settings.os == "Windows":
            del self.options.fPIC

    def configure(self):
        if self.options.shared:
            self.options.rm_safe("fPIC")

    def layout(self):
        cmake_layout(self, src_folder="src")

    def requirements(self):
        self.requires(f"eabase/01082025@{self.user}/{self.channel}", transitive_headers=True)

    def source(self):
        get(self, **self.conan_data["sources"][self.version], strip_root=True)

    def generate(self):
        tc = CMakeToolchain(self)
        tc.generate()
        CMakeDeps(self).generate()

    def _patch_sources(self):
        cmakelists = os.path.join(self.source_folder, "CMakeLists.txt")

        replace_in_file(self, cmakelists, "include(CommonCppFlags)", "")

        # The upstream CMakeLists.txt pulls EABase in via FetchContent from a pinned commit -
        # replace it with Conan's EABase, and add install rules (upstream has none).
        replace_in_file(
            self,
            cmakelists,
            "FetchContent_Declare(\n"
            "  EABase\n"
            "  GIT_REPOSITORY https://github.com/electronicarts/EABase.git\n"
            "  GIT_TAG        123363eb82e132c0181ac53e43226d8ee76dea12\n"
            "  GIT_SUBMODULES \"\" # This should be temporary until we update the cyclic submodule dependencies in EABase.\n"
            ")\n"
            "\n"
            "FetchContent_MakeAvailable(EABase)\n"
            "\n"
            "target_link_libraries(EAThread EABase)\n",
            "find_package(EABase REQUIRED CONFIG)\n"
            "target_link_libraries(EAThread EABase::EABase)\n"
            "\n"
            "include(GNUInstallDirs)\n"
            "install(TARGETS EAThread\n"
            "        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}\n"
            "        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}\n"
            "        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})\n"
            "install(DIRECTORY include/eathread DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})\n",
        )

    def build(self):
        self._patch_sources()
        cmake = CMake(self)
        cmake.configure()
        cmake.build()

    def package(self):
        copy(
            self,
            "LICENSE",
            src=self.source_folder,
            dst=os.path.join(self.package_folder, "licenses"),
        )
        cmake = CMake(self)
        cmake.install()
        rmdir(self, os.path.join(self.package_folder, "doc"))

    def package_info(self):
        self.cpp_info.libs = ["EAThread"]
        if self.settings.os in ["Linux", "FreeBSD"]:
            self.cpp_info.system_libs.append("pthread")

        self.cpp_info.set_property("cmake_file_name", "EAThread")
        self.cpp_info.set_property("cmake_target_name", "EAThread::EAThread")

        # TODO: to remove in conan v2 once cmake_find_package_* generators removed
        self.cpp_info.filenames["cmake_find_package"] = "EAThread"
        self.cpp_info.filenames["cmake_find_package_multi"] = "EAThread"
        self.cpp_info.names["cmake_find_package"] = "EAThread"
        self.cpp_info.names["cmake_find_package_multi"] = "EAThread"