<?php

namespace App\Module\Fund\Dto;

use App\Module\Fund\Enums\FUND_TYPE;

/**
 * 资金流转数据传输对象
 *
 * 用于在服务层返回资金流转信息，避免直接暴露模型对象
 */
class CirculationDto
{
    /**
     * @var int 流转ID
     */
    public int $id;

    /**
     * @var int 用户ID
     */
    public int $userId;

    /**
     * @var int|FUND_TYPE 源资金类型ID
     */
    public $fromFundId;

    /**
     * @var int|FUND_TYPE 目标资金类型ID
     */
    public $toFundId;

    /**
     * @var float 金额（小数形式）
     */
    public float $amount;

    /**
     * @var int 关联ID
     */
    public int $relatedId;

    /**
     * @var string 关联类型
     */
    public string $relatedType;

    /**
     * @var string 备注
     */
    public string $remark;

    /**
     * @var int 创建时间
     */
    public int $createTime;

    /**
     * @var string|null 源资金类型名称（可选）
     */
    public ?string $fromFundName = null;

    /**
     * @var string|null 目标资金类型名称（可选）
     */
    public ?string $toFundName = null;

    /**
     * 从模型创建DTO
     *
     * @param mixed $model 流转模型
     * @param array $fundNames 资金类型名称映射（可选）
     * @return self
     */
    public static function fromModel($model, array $fundNames = []): self
    {
        $dto = new self();
        $dto->id = $model->id;
        $dto->userId = $model->user_id;
        $dto->fromFundId = $model->fund_id;  // 修正字段映射
        $dto->toFundId = $model->to_fund_id;

        // 直接使用数据库中的小数值
        $dto->amount = (float)$model->total_fee;

        $dto->relatedId = $model->re_id;  // 修正字段映射
        $dto->relatedType = $model->re_type;  // 修正字段映射
        $dto->remark = $model->remark;
        $dto->createTime = $model->create_time;

        // 如果提供了资金类型名称映射，则设置资金类型名称
        if (!empty($fundNames)) {
            $fromFundIdValue = $model->fund_id instanceof FUND_TYPE ? $model->fund_id->value : $model->fund_id;  // 修正字段映射
            $toFundIdValue = $model->to_fund_id instanceof FUND_TYPE ? $model->to_fund_id->value : $model->to_fund_id;

            if (isset($fundNames[$fromFundIdValue])) {
                $dto->fromFundName = $fundNames[$fromFundIdValue];
            }

            if (isset($fundNames[$toFundIdValue])) {
                $dto->toFundName = $fundNames[$toFundIdValue];
            }
        }

        return $dto;
    }

    /**
     * 获取源资金类型ID的整数值
     *
     * @return int
     */
    public function getFromFundId(): int
    {
        if ($this->fromFundId instanceof FUND_TYPE) {
            return $this->fromFundId->value;
        }
        return (int)$this->fromFundId;
    }

    /**
     * 获取目标资金类型ID的整数值
     *
     * @return int
     */
    public function getToFundId(): int
    {
        if ($this->toFundId instanceof FUND_TYPE) {
            return $this->toFundId->value;
        }
        return (int)$this->toFundId;
    }

    /**
     * 转换为数组
     *
     * @return array
     */
    public function toArray(): array
    {
        $result = [
            'id' => $this->id,
            'user_id' => $this->userId,
            'from_fund_id' => $this->fromFundId instanceof FUND_TYPE ? $this->fromFundId->value : $this->fromFundId,
            'to_fund_id' => $this->toFundId instanceof FUND_TYPE ? $this->toFundId->value : $this->toFundId,
            'amount' => $this->amount,
            'related_id' => $this->relatedId,
            'related_type' => $this->relatedType,
            'remark' => $this->remark,
            'create_time' => $this->createTime,
        ];

        if ($this->fromFundName !== null) {
            $result['from_fund_name'] = $this->fromFundName;
        }

        if ($this->toFundName !== null) {
            $result['to_fund_name'] = $this->toFundName;
        }

        return $result;
    }
}