<?php

declare(strict_types=1);

namespace Package\Extension;

use Package\Target\php;
use StaticPHP\Attribute\Package\BeforeStage;
use StaticPHP\Attribute\Package\CustomPhpConfigureArg;
use StaticPHP\Attribute\Package\Extension;
use StaticPHP\Attribute\PatchDescription;
use StaticPHP\Package\PackageInstaller;
use StaticPHP\Package\PhpExtensionPackage;
use StaticPHP\Runtime\SystemTarget;
use StaticPHP\Util\FileSystem;

#[Extension('event')]
class event extends PhpExtensionPackage
{
    #[CustomPhpConfigureArg('Darwin')]
    #[CustomPhpConfigureArg('Linux')]
    public function getUnixConfigureArg(PackageInstaller $installer): string
    {
        $arg = "--with-event-core --with-event-extra --with-event-libevent-dir={$this->getBuilder()->getBuildRootPath()}";
        if ($installer->getLibraryPackage('openssl')) {
            $arg .= " --with-event-openssl={$this->getBuilder()->getBuildRootPath()}";
        }
        if ($installer->getPhpExtensionPackage('ext-sockets')) {
            $arg .= ' --enable-event-sockets';
        } else {
            $arg .= ' --disable-event-sockets';
        }
        return $arg;
    }

    #[BeforeStage('php', [php::class, 'makeForUnix'], 'ext-event')]
    #[PatchDescription('Prevent event extension compile error on macOS')]
    #[PatchDescription('Patch libevent http_connection.c to use a const peer address')]
    public function patchBeforeMake(PackageInstaller $installer): void
    {
        $php_src = $installer->getTargetPackage('php')->getSourceDir();
        // Prevent event extension compile error on macOS
        if (SystemTarget::getTargetOS() === 'Darwin') {
            FileSystem::replaceFileRegex("{$php_src}/main/php_config.h", '/^#define HAVE_OPENPTY 1$/m', '');
        }
        $this->patchLibeventConstPeer("{$php_src}/ext/event");
    }

    #[BeforeStage('ext-event', [PhpExtensionPackage::class, 'makeForUnix'])]
    #[PatchDescription('Patch libevent http_connection.c to use a const peer address')]
    public function patchBeforeSharedMake(PhpExtensionPackage $pkg): void
    {
        $this->patchLibeventConstPeer($pkg->getSourceDir());
    }

    private function patchLibeventConstPeer(string $event_source_dir): bool
    {
        $file = "{$event_source_dir}/php8/classes/http_connection.c";
        if (!is_file($file)) {
            return false;
        }
        // libevent >= 2.2 changed evhttp_connection_get_peer()'s
        // address arg to `const char **`
        $header = $this->getBuilder()->getBuildRootPath() . '/include/event2/http.h';
        $isConst = is_file($header)
            && preg_match('/evhttp_connection_get_peer\s*\([^;]*\bconst\s+char\s*\*\*\s*address/s', file_get_contents($header)) === 1;
        return (bool) ($isConst
            ? FileSystem::replaceFileRegex($file, '/^\tchar \*address;$/m', "\tconst char *address;")
            : FileSystem::replaceFileRegex($file, '/^\tconst char \*address;$/m', "\tchar *address;"));
    }
}