<?php

declare(strict_types=1);

namespace app\common\library;

use app\common\model\MallConfig;

/**
 * PlayX 与积分商城相关的比例配置：优先读 mall_config，无表记录时回退 .env
 */
final class MallPlayxRatios
{
    private static ?array $cache = null;

    /**
     * @return array{return_ratio: float, unlock_ratio: float, points_to_cash_ratio: float}
     */
    public static function get(): array
    {
        if (self::$cache !== null) {
            return self::$cache;
        }

        $row = MallConfig::order('id', 'asc')->find();
        if ($row) {
            self::$cache = [
                'return_ratio'          => self::toFloat($row->return_ratio),
                'unlock_ratio'          => self::toFloat($row->unlock_ratio),
                'points_to_cash_ratio' => self::toFloat($row->points_to_cash_ratio),
            ];

            return self::$cache;
        }

        self::$cache = [
            'return_ratio'          => floatval(env('PLAYX_RETURN_RATIO', '0.1')),
            'unlock_ratio'          => floatval(env('PLAYX_UNLOCK_RATIO', '0.1')),
            'points_to_cash_ratio' => floatval(env('PLAYX_POINTS_TO_CASH_RATIO', '0.1')),
        ];

        return self::$cache;
    }

    public static function forget(): void
    {
        self::$cache = null;
    }

    private static function toFloat(mixed $v): float
    {
        if (is_numeric($v)) {
            return floatval($v);
        }

        return 0.0;
    }
}