<?php

namespace App\Console\Commands;

use App\Utilities\SystemDatabaseConfiguration;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use Throwable;

class VerifySystemDatabase extends Command
{
    public const EXIT_CONFIG_NOT_LOADED = 10;

    public const EXIT_DATABASE_CONNECTION_FAILED = 11;

    public const EXIT_SYSTEM_TABLE_VALIDATION_FAILED = 12;

    protected $signature = 'system-database:verify';

    protected $description = '在新的 Laravel 进程中验证当前共享系统数据库';

    public function handle(SystemDatabaseConfiguration $configuration): int
    {
        try {
            $settings = $configuration->current();
        } catch (Throwable) {
            return $this->failed(
                '新配置未被 Laravel 加载。',
                self::EXIT_CONFIG_NOT_LOADED
            );
        }

        if (
            $settings['mode'] !== 'shared'
            || ! config('upstreams.stored_configuration.enabled', false)
            || config('upstreams.local_configuration.enabled', false)
        ) {
            return $this->failed(
                '新配置未被 Laravel 加载。',
                self::EXIT_CONFIG_NOT_LOADED
            );
        }

        try {
            DB::purge((string) $settings['connection']);
            DB::reconnect((string) $settings['connection']);
            DB::selectOne('SELECT 1');
        } catch (Throwable) {
            return $this->failed(
                'Laravel 数据库连接失败。',
                self::EXIT_DATABASE_CONNECTION_FAILED
            );
        }

        try {
            $configuration->probe($settings);
        } catch (Throwable) {
            return $this->failed(
                '系统表验证失败。',
                self::EXIT_SYSTEM_TABLE_VALIDATION_FAILED
            );
        }

        $this->components->info('共享系统数据库已通过应用级验证。');

        return self::SUCCESS;
    }

    private function failed(string $message, int $exitCode): int
    {
        $this->components->error($message);

        return $exitCode;
    }
}