from conan import ConanFile
from conan.errors import ConanInvalidConfiguration
from conan.tools.build import check_min_cppstd
from conan.tools.cmake import CMake, CMakeToolchain, cmake_layout
from conan.tools.files import apply_conandata_patches, collect_libs, copy, export_conandata_patches, get, rmdir
from conan.tools.microsoft import is_msvc, is_msvc_static_runtime
from conan.tools.scm import Version
import os

required_conan_version = ">=2.1"


class YamlCppConan(ConanFile):
    name = "yaml-cpp"
    url = "https://github.com/conan-io/conan-center-index"
    homepage = "https://github.com/jbeder/yaml-cpp"
    topics = ("yaml", "yaml-parser", "serialization", "data-serialization")
    description = "A YAML parser and emitter in C++"
    license = "MIT"
    package_type = "library"
    settings = "os", "arch", "compiler", "build_type"
    options = {
        "shared": [True, False],
        "fPIC": [True, False],
    }
    default_options = {
        "shared": False,
        "fPIC": True,
    }

    def export_sources(self):
        export_conandata_patches(self)

    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 validate(self):
        if self.settings.compiler.get_safe("cppstd"):
            check_min_cppstd(self, "11")
        if self.options.shared and is_msvc(self) and is_msvc_static_runtime(self):
            raise ConanInvalidConfiguration(
                f"Visual Studio build for {self.name} shared library with MT runtime is not supported"
            )

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

    def generate(self):
        tc = CMakeToolchain(self)
        tc.variables["YAML_CPP_BUILD_TESTS"] = False
        tc.variables["YAML_CPP_BUILD_CONTRIB"] = True
        tc.variables["YAML_CPP_BUILD_TOOLS"] = False
        tc.variables["YAML_CPP_INSTALL"] = True
        tc.variables["YAML_BUILD_SHARED_LIBS"] = self.options.shared
        if Version(self.version) <= "0.8.0": # pylint: disable=conan-condition-evals-to-constant
            tc.cache_variables["CMAKE_POLICY_VERSION_MINIMUM"] = "3.5" # CMake 4 support
        if is_msvc(self):
            tc.variables["YAML_MSVC_SHARED_RT"] = not is_msvc_static_runtime(self)
            tc.preprocessor_definitions["_NOEXCEPT"] = "noexcept"
        if Version(self.version) >= "0.9.0":
            tc.cache_variables["YAML_ENABLE_PIC"] = self.options.get_safe("fPIC", "OFF")
        tc.generate()

    def build(self):
        apply_conandata_patches(self)
        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, "lib", "cmake"))
        rmdir(self, os.path.join(self.package_folder, "CMake"))
        rmdir(self, os.path.join(self.package_folder, "lib", "pkgconfig"))
        rmdir(self, os.path.join(self.package_folder, "share"))

    def package_info(self):
        self.cpp_info.set_property("cmake_file_name", "yaml-cpp")
        self.cpp_info.set_property("cmake_target_name", "yaml-cpp::yaml-cpp")
        self.cpp_info.set_property("cmake_target_aliases", ["yaml-cpp"]) # CMake imported target before 0.8.0
        self.cpp_info.set_property("pkg_config_name", "yaml-cpp")
        self.cpp_info.libs = collect_libs(self)
        if self.settings.os in ("Linux", "FreeBSD"):
            self.cpp_info.system_libs.append("m")
        if is_msvc(self):
            self.cpp_info.defines.append("_NOEXCEPT=noexcept")
        if Version(self.version) < "0.8.0":
            if self.settings.os == "Windows" and self.options.shared:
                self.cpp_info.defines.append("YAML_CPP_DLL")
        else:
            if not self.options.shared:
                self.cpp_info.defines.append("YAML_CPP_STATIC_DEFINE")