from conan import ConanFile
from conan.tools.cmake import CMake, CMakeToolchain
from conan.tools.files import get, replace_in_file, load
import os
import re

class Lz4Conan(ConanFile):
    name = "lz4"
    version = "1.10.0"
    settings = "os", "compiler", "arch", "build_type"

    def source(self):
        # Скачиваем исходники
        url = f"https://github.com/lz4/lz4/archive/refs/tags/v{self.version}.tar.gz"
        get(self, url, strip_root=True)

        # Находим CMakeLists.txt в правильном месте
        cmakelists_path = os.path.join(self.source_folder, "build", "cmake", "CMakeLists.txt")
        if not os.path.exists(cmakelists_path):
            # Для более новых версий lz4 путь может быть другим
            cmakelists_path = os.path.join(self.source_folder, "CMakeLists.txt")

        # Применяем исправление для VS2022
        if os.path.exists(cmakelists_path):
            content = load(self, cmakelists_path)

            # Добавляем исправление, если его еще нет
            if "CMP0091" not in content:
                # Ищем место для вставки после cmake_minimum_required
                new_content = re.sub(
                    r'(cmake_minimum_required\(VERSION [\d.]+\))',
                    r'\1\n\n# Fix for VS2022\ncmake_policy(SET CMP0091 NEW)',
                    content
                )

                with open(cmakelists_path, "w", encoding="utf-8") as f:
                    f.write(new_content)
                self.output.info("Applied VS2022 fix to CMakeLists.txt")

    def generate(self):
        tc = CMakeToolchain(self)
        # Явно указываем генератор для VS2022
        if self.settings.compiler == "msvc" and self.settings.compiler.version == "193":
            tc.generator = "Visual Studio 17 2022"

            # Дополнительные настройки для MSVC
            tc.preprocessor_definitions["_CRT_SECURE_NO_WARNINGS"] = "1"
            tc.variables["CMAKE_MSVC_RUNTIME_LIBRARY"] = "MultiThreaded$<$<CONFIG:Debug>:Debug>"
        tc.generate()

    def build(self):
        cmake = CMake(self)
        # Автоматически определяем папку со скриптами CMake
        if os.path.exists(os.path.join(self.source_folder, "build", "cmake")):
            cmake.configure(build_script_folder=os.path.join("build", "cmake"))
        else:
            cmake.configure()
        cmake.build()

    def package(self):
        cmake = CMake(self)
        cmake.install()

    def package_info(self):
        self.cpp_info.libs = ["lz4"]