<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Symfony\Component\Process\Process;

class DeploySettingsConstCommand extends Command
{
    protected $signature = 'settings:deploy
                            {database?* : نام دیتابیس (اختیاری؛ پیش‌فرض DB_DATABASE)}
                            {--file= : مسیر SQL (پیش‌فرض database/sql/deploy_settings_const.sql)}
                            {--preserve : deploy_settings_const_preserve_value_sync_can_edit.sql}';

    protected $description = 'اجرای deploy_settings_const.sql روی DB tenant با اتصال .env';

    public function handle(): int
    {
        $path = $this->resolveSqlPath();
        if ($path === null) {
            return self::FAILURE;
        }

        $cfg = config('database.connections.'.config('database.default'));
        if (($cfg['driver'] ?? '') !== 'mysql') {
            $this->error('فقط mysql پشتیبانی می‌شود.');

            return self::FAILURE;
        }

        $host = (string) ($cfg['host'] ?? '127.0.0.1');
        $port = (string) ($cfg['port'] ?? '3306');
        $user = (string) ($cfg['username'] ?? '');
        $pass = (string) ($cfg['password'] ?? '');
        $defaultDb = (string) ($cfg['database'] ?? '');

        if ($user === '') {
            $this->error('DB_USERNAME در .env خالی است.');

            return self::FAILURE;
        }

        $databases = $this->argument('database');
        if ($databases === [] || $databases === null) {
            if ($defaultDb === '') {
                $this->error('نام DB ندهید → DB_DATABASE را در .env بگذارید یا آرگومان بدهید.');

                return self::FAILURE;
            }
            $databases = [$defaultDb];
        }

        $mysql = $this->findMysqlBinary();
        if ($mysql === null) {
            $this->error('mysql client پیدا نشد. نصب کنید یا اجرا کنید: bash database/sql/run_deploy_settings.sh');

            return self::FAILURE;
        }

        $sql = file_get_contents($path);
        if ($sql === false || trim($sql) === '') {
            $this->error("فایل SQL خالی یا غیرقابل خواندن: {$path}");

            return self::FAILURE;
        }

        foreach ($databases as $db) {
            $db = trim((string) $db);
            if ($db === '') {
                continue;
            }

            $this->info("==> {$path} → {$db} @ {$host}:{$port}");

            $process = new Process([
                $mysql,
                '-h', $host,
                '-P', $port,
                '-u', $user,
                '--default-character-set=utf8mb4',
                $db,
            ], null, ['MYSQL_PWD' => $pass]);
            $process->setInput($sql);
            $process->setTimeout(null);
            $process->run(function ($type, $buffer) {
                $line = trim($buffer);
                if ($line === '') {
                    return;
                }
                if ($type === Process::ERR) {
                    $this->error($line);
                } else {
                    $this->line($line);
                }
            });

            if (! $process->isSuccessful()) {
                $this->error("خطا روی دیتابیس: {$db}");

                return self::FAILURE;
            }

            $this->info("    done: {$db}");
        }

        $this->info('==> all done');

        return self::SUCCESS;
    }

    private function resolveSqlPath(): ?string
    {
        if ($this->option('preserve')) {
            $relative = 'database/sql/deploy_settings_const_preserve_value_sync_can_edit.sql';
        } else {
            $relative = $this->option('file') ?: 'database/sql/deploy_settings_const.sql';
        }

        $path = str_starts_with($relative, '/')
            ? $relative
            : base_path($relative);

        if (! is_file($path)) {
            $this->error("فایل SQL پیدا نشد: {$path}");

            return null;
        }

        return $path;
    }

    private function findMysqlBinary(): ?string
    {
        $process = new Process(['command', '-v', 'mysql']);
        $process->run();
        if ($process->isSuccessful()) {
            $bin = trim($process->getOutput());
            if ($bin !== '') {
                return $bin;
            }
        }

        foreach (['/usr/bin/mysql', '/usr/local/bin/mysql'] as $candidate) {
            if (is_executable($candidate)) {
                return $candidate;
            }
        }

        return null;
    }
}