from conan import ConanFile
from conan.errors import ConanInvalidConfiguration
from conan.tools.build import check_min_cppstd
from conan.tools.files import copy, get
from conan.tools.layout import basic_layout
from conan.tools.scm import Version
import os

required_conan_version = ">=1.50.0"


class ElfioConan(ConanFile):
    name = "elfio"
    description = "A header-only C++ library that provides a simple interface for reading and generating files in ELF binary format."
    license = "MIT"
    url = "https://github.com/conan-io/conan-center-index"
    homepage = "https://elfio.sourceforge.net"
    topics = ("elf", "header-only")
    package_type = "header-library"
    settings = "os", "arch", "compiler", "build_type"
    no_copy_source = True

    @property
    def _min_cppstd(self):
        if Version(self.version) < "3.11":
            return "11"
        elif Version(self.version) < "3.12":
            return "14"
        else:
            return "17"

    @property
    def _compilers_minimum_version(self):
        return {
            # while elfio<3.12 requires C++14, elfio still supports GCC 5
            "17": {
                "gcc": "8",
                "clang": "7",
                "apple-clang": "12",
                "Visual Studio": "16",
                "msvc": "192",
            },
        }.get(self._min_cppstd, {})

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

    def package_id(self):
        self.info.clear()

    def validate(self):
        if self.settings.compiler.get_safe("cppstd"):
            check_min_cppstd(self, self._min_cppstd)
        minimum_version = self._compilers_minimum_version.get(str(self.settings.compiler), False)
        if minimum_version and Version(self.settings.compiler.version) < minimum_version:
            raise ConanInvalidConfiguration(
                f"{self.ref} requires C++{self._min_cppstd}, which your compiler does not support."
            )

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

    def build(self):
        pass

    def package(self):
        copy(self, "COPYING", src=self.source_folder, dst=os.path.join(self.package_folder, "licenses"))
        copy(self, "LICENSE*", src=self.source_folder, dst=os.path.join(self.package_folder, "licenses"))
        copy(
            self,
            pattern=os.path.join("elfio", "*.hpp"),
            src=self.source_folder,
            dst=os.path.join(self.package_folder, "include"),
        )

    def package_info(self):
        self.cpp_info.bindirs = []
        self.cpp_info.libdirs = []
