<?php

declare(strict_types=1);

namespace SPC\builder\macos;

use SPC\builder\BuilderBase;
use SPC\builder\macos\library\MacOSLibraryBase;
use SPC\builder\traits\UnixBuilderTrait;
use SPC\exception\FileSystemException;
use SPC\exception\RuntimeException;
use SPC\exception\WrongUsageException;
use SPC\store\SourcePatcher;

/**
 * macOS 系统环境下的构建器
 * 源于 Config，但因为感觉叫 Config 不太合适，就换成了 Builder
 */
class MacOSBuilder extends BuilderBase
{
    /** 编译的 Unix 工具集 */
    use UnixBuilderTrait;

    /** @var bool 标记是否 patch 了 phar */
    private bool $phar_patched = false;

    /**
     * @param  null|string         $cc   C编译器名称，如果不传入则默认使用clang
     * @param  null|string         $cxx  C++编译器名称，如果不传入则默认使用clang++
     * @param  null|string         $arch 当前架构，如果不传入则默认使用当前系统架构
     * @throws RuntimeException
     * @throws WrongUsageException
     */
    public function __construct(?string $cc = null, ?string $cxx = null, ?string $arch = null, bool $zts = false)
    {
        // 如果是 Debug 模式，才使用 set -x 显示每条执行的命令
        $this->set_x = defined('DEBUG_MODE') ? 'set -x' : 'true';
        // 初始化一些默认参数
        $this->cc = $cc ?? 'clang';
        $this->cxx = $cxx ?? 'clang++';
        $this->arch = $arch ?? php_uname('m');
        $this->gnu_arch = arch2gnu($this->arch);
        $this->zts = $zts;
        // 根据 CPU 线程数设置编译进程数
        $this->concurrency = SystemUtil::getCpuCount();
        // 设置 cflags
        $this->arch_c_flags = SystemUtil::getArchCFlags($this->arch);
        $this->arch_cxx_flags = SystemUtil::getArchCFlags($this->arch);
        // 设置 cmake
        $this->cmake_toolchain_file = SystemUtil::makeCmakeToolchainFile('Darwin', $this->arch, $this->arch_c_flags);
        // 设置 configure 依赖的环境变量
        $this->configure_env =
            'PKG_CONFIG="' . BUILD_ROOT_PATH . '/bin/pkg-config" ' .
            'PKG_CONFIG_PATH="' . BUILD_LIB_PATH . '/pkgconfig/" ' .
            "CC='{$this->cc}' " .
            "CXX='{$this->cxx}' " .
            "CFLAGS='{$this->arch_c_flags} -Wimplicit-function-declaration'";

        // 创立 pkg-config 和放头文件的目录
        f_mkdir(BUILD_LIB_PATH . '/pkgconfig', recursive: true);
        f_mkdir(BUILD_INCLUDE_PATH, recursive: true);
    }

    /**
     * 生成库构建采用的 autoconf 参数列表
     *
     * @param string $name      要构建的 lib 库名，传入仅供输出日志
     * @param array  $lib_specs 依赖的 lib 库的 autoconf 文件
     */
    public function makeAutoconfArgs(string $name, array $lib_specs): string
    {
        $ret = '';
        foreach ($lib_specs as $libName => $arr) {
            $lib = $this->getLib($libName);

            $arr = $arr ?? [];

            $disableArgs = $arr[0] ?? null;
            $prefix = $arr[1] ?? null;
            if ($lib instanceof MacOSLibraryBase) {
                logger()->info("{$name} \033[32;1mwith\033[0;1m {$libName} support");
                $ret .= '--with-' . $libName . '=yes ';
            } else {
                logger()->info("{$name} \033[31;1mwithout\033[0;1m {$libName} support");
                $ret .= ($disableArgs ?? "--with-{$libName}=no") . ' ';
            }
        }
        return rtrim($ret);
    }

    /**
     * 返回 macOS 系统依赖的框架列表
     *
     * @param bool $asString 是否以字符串形式返回（默认为 False）
     */
    public function getFrameworks(bool $asString = false): array|string
    {
        $libs = [];

        // reorder libs
        foreach ($this->libs as $lib) {
            foreach ($lib->getDependencies() as $dep) {
                $libs[] = $dep;
            }
            $libs[] = $lib;
        }

        $frameworks = [];
        /** @var MacOSLibraryBase $lib */
        foreach ($libs as $lib) {
            array_push($frameworks, ...$lib->getFrameworks());
        }

        if ($asString) {
            return implode(' ', array_map(fn ($x) => "-framework {$x}", $frameworks));
        }
        return $frameworks;
    }

    /**
     * @throws RuntimeException
     * @throws FileSystemException
     */
    public function buildPHP(int $build_target = BUILD_TARGET_NONE, bool $bloat = false): void
    {
        $extra_libs = $this->getFrameworks(true) . ' ' . ($this->getExt('swoole') ? '-lc++ ' : '');
        if (!$bloat) {
            $extra_libs .= implode(' ', $this->getAllStaticLibFiles());
        } else {
            logger()->info('bloat linking');
            $extra_libs .= implode(
                ' ',
                array_map(
                    fn ($x) => "-Wl,-force_load,{$x}",
                    array_filter($this->getAllStaticLibFiles())
                )
            );
        }

        // patch before configure
        SourcePatcher::patchPHPBuildconf($this);

        shell()->cd(SOURCE_PATH . '/php-src')->exec('./buildconf --force');

        SourcePatcher::patchPHPConfigure($this);

        if ($this->getLib('libxml2') || $this->getExt('iconv')) {
            $extra_libs .= ' -liconv';
        }

        if ($this->getPHPVersionID() < 80000) {
            $json_74 = '--enable-json ';
        } else {
            $json_74 = '';
        }

        shell()->cd(SOURCE_PATH . '/php-src')
            ->exec(
                './configure ' .
                '--prefix= ' .
                '--with-valgrind=no ' .     // 不检测内存泄漏
                '--enable-shared=no ' .
                '--enable-static=yes ' .
                "CFLAGS='{$this->arch_c_flags} -Werror=unknown-warning-option' " .
                '--disable-all ' .
                '--disable-cgi ' .
                '--disable-phpdbg ' .
                '--enable-cli ' .
                '--enable-fpm ' .
                $json_74 .
                '--enable-micro ' .
                ($this->zts ? '--enable-zts' : '') . ' ' .
                $this->makeExtensionArgs() . ' ' .
                $this->configure_env
            );

        SourcePatcher::patchPHPAfterConfigure($this);

        $this->cleanMake();

        if (($build_target & BUILD_TARGET_CLI) === BUILD_TARGET_CLI) {
            logger()->info('building cli');
            $this->buildCli($extra_libs);
        }
        if (($build_target & BUILD_TARGET_FPM) === BUILD_TARGET_FPM) {
            logger()->info('building fpm');
            $this->buildFpm($extra_libs);
        }
        if (($build_target & BUILD_TARGET_MICRO) === BUILD_TARGET_MICRO) {
            logger()->info('building micro');
            $this->buildMicro($extra_libs);
        }

        if (php_uname('m') === $this->arch) {
            $this->sanityCheck($build_target);
        }

        if ($this->phar_patched) {
            SourcePatcher::patchMicro(['phar'], true);
        }
    }

    /**
     * 构建 cli
     *
     * @throws RuntimeException
     * @throws FileSystemException
     */
    public function buildCli(string $extra_libs): void
    {
        $shell = shell()->cd(SOURCE_PATH . '/php-src');
        $shell->exec("make -j{$this->concurrency} EXTRA_CFLAGS=\"-g -Os -fno-ident\" EXTRA_LIBS=\"{$extra_libs} -lresolv\" cli");
        if ($this->strip) {
            $shell->exec('dsymutil -f sapi/cli/php')->exec('strip sapi/cli/php');
        }
        $this->deployBinary(BUILD_TARGET_CLI);
    }

    /**
     * 构建 phpmicro
     *
     * @throws FileSystemException|RuntimeException
     */
    public function buildMicro(string $extra_libs): void
    {
        if ($this->getPHPVersionID() < 80000) {
            throw new RuntimeException('phpmicro only support PHP >= 8.0!');
        }
        if ($this->getExt('phar')) {
            $this->phar_patched = true;
            SourcePatcher::patchMicro(['phar']);
        }

        shell()->cd(SOURCE_PATH . '/php-src')
            ->exec("make -j{$this->concurrency} EXTRA_CFLAGS=\"-g -Os -fno-ident\" EXTRA_LIBS=\"{$extra_libs} -lresolv\" " . ($this->strip ? 'STRIP="dsymutil -f " ' : '') . 'micro');
        $this->deployBinary(BUILD_TARGET_MICRO);
    }

    /**
     * 构建 fpm
     *
     * @throws RuntimeException
     * @throws FileSystemException
     */
    public function buildFpm(string $extra_libs): void
    {
        $shell = shell()->cd(SOURCE_PATH . '/php-src');
        $shell->exec("make -j{$this->concurrency} EXTRA_CFLAGS=\"-g -Os -fno-ident\" EXTRA_LIBS=\"{$extra_libs} -lresolv\" fpm");
        if ($this->strip) {
            $shell->exec('dsymutil -f sapi/fpm/php-fpm')->exec('strip sapi/fpm/php-fpm');
        }
        $this->deployBinary(BUILD_TARGET_FPM);
    }
}