<?php

namespace App\Module\Point\Logic;

use App\Module\Point\Models\PointCirculationModel;

/**
 * 积分流转逻辑类
 *
 * 处理同一用户不同积分账户间的流转操作
 * 专注于整数积分处理，不涉及小数运算
 */
class Circulation
{
    /**
     * 处理积分流转
     *
     * @param int $userId 用户ID
     * @param int $fromPointId 源积分类型ID
     * @param int $toPointId 目标积分类型ID
     * @param int $amount 流转积分数量
     * @param int $reId 关联ID
     * @param string $reType 关联类型
     * @param string $remark 备注
     * @return int|string 成功返回流转记录ID，失败返回错误信息
     */
    public static function handle(int $userId, int $fromPointId, int $toPointId, int $amount, int $reId, string $reType, string $remark)
    {
        # 参数验证
        if ($userId <= 0) {
            return '用户ID无效';
        }

        if ($fromPointId === $toPointId) {
            return '源积分类型和目标积分类型不能相同';
        }

        if ($amount <= 0) {
            return '流转积分数量必须大于0';
        }

        if (empty($reType)) {
            return '关联类型不能为空';
        }

        # 创建流转记录
        $circulation = PointCirculationModel::createRecord(
            $userId,
            $fromPointId,
            $toPointId,
            $amount,
            $reId,
            $reType,
            $remark
        );

        if (!$circulation) {
            return '创建流转记录失败';
        }

        return $circulation->id;
    }

    /**
     * 批量处理积分流转
     *
     * @param array $circulations 流转操作数组
     * @return array 处理结果数组
     */
    public static function batchHandle(array $circulations): array
    {
        $results = [];

        foreach ($circulations as $index => $circulation) {
            if (!isset(
                $circulation['user_id'],
                $circulation['from_point_id'],
                $circulation['to_point_id'],
                $circulation['amount'],
                $circulation['re_id'],
                $circulation['re_type'],
                $circulation['remark']
            )) {
                $results[$index] = '流转参数不完整';
                continue;
            }

            $result = self::handle(
                $circulation['user_id'],
                $circulation['from_point_id'],
                $circulation['to_point_id'],
                $circulation['amount'],
                $circulation['re_id'],
                $circulation['re_type'],
                $circulation['remark']
            );

            $results[$index] = $result;
        }

        return $results;
    }

    /**
     * 完成流转操作
     *
     * @param int $circulationId 流转记录ID
     * @return bool|string 成功返回true，失败返回错误信息
     */
    public static function complete(int $circulationId)
    {
        $circulation = PointCirculationModel::find($circulationId);
        if (!$circulation) {
            return '流转记录不存在';
        }

        if ($circulation->isCompleted()) {
            return '流转记录已完成';
        }

        if ($circulation->isFailed()) {
            return '流转记录已失败，无法完成';
        }

        return $circulation->markCompleted();
    }

    /**
     * 标记流转失败
     *
     * @param int $circulationId 流转记录ID
     * @return bool|string 成功返回true，失败返回错误信息
     */
    public static function fail(int $circulationId)
    {
        $circulation = PointCirculationModel::find($circulationId);
        if (!$circulation) {
            return '流转记录不存在';
        }

        if ($circulation->isCompleted()) {
            return '流转记录已完成，无法标记为失败';
        }

        if ($circulation->isFailed()) {
            return '流转记录已失败';
        }

        return $circulation->markFailed();
    }

    /**
     * 获取用户流转记录
     *
     * @param int $userId 用户ID
     * @param int $limit 限制数量
     * @return array 流转记录数组
     */
    public static function getUserRecords(int $userId, int $limit = 50): array
    {
        $records = PointCirculationModel::getUserRecords($userId, $limit);
        $result = [];

        foreach ($records as $record) {
            $result[] = [
                'id' => $record->id,
                'user_id' => $record->user_id,
                'from_point_id' => $record->from_point_id,
                'to_point_id' => $record->to_point_id,
                'amount' => $record->amount,
                're_id' => $record->re_id,
                're_type' => $record->re_type,
                'remark' => $record->remark,
                'status' => $record->status,
                'status_name' => $record->getStatusName(),
                'create_time' => $record->create_time,
                'update_time' => $record->update_time,
            ];
        }

        return $result;
    }

    /**
     * 获取指定积分类型的流转记录
     *
     * @param int $userId 用户ID
     * @param int $pointId 积分类型ID
     * @param int $limit 限制数量
     * @return array 流转记录数组
     */
    public static function getPointRecords(int $userId, int $pointId, int $limit = 50): array
    {
        $records = PointCirculationModel::getPointRecords($userId, $pointId, $limit);
        $result = [];

        foreach ($records as $record) {
            $result[] = [
                'id' => $record->id,
                'user_id' => $record->user_id,
                'from_point_id' => $record->from_point_id,
                'to_point_id' => $record->to_point_id,
                'amount' => $record->amount,
                're_id' => $record->re_id,
                're_type' => $record->re_type,
                'remark' => $record->remark,
                'status' => $record->status,
                'status_name' => $record->getStatusName(),
                'create_time' => $record->create_time,
                'update_time' => $record->update_time,
            ];
        }

        return $result;
    }

    /**
     * 验证流转操作的有效性
     *
     * @param int $userId 用户ID
     * @param int $fromPointId 源积分类型ID
     * @param int $toPointId 目标积分类型ID
     * @param int $amount 流转积分数量
     * @return bool|string 有效返回true，无效返回错误信息
     */
    public static function validate(int $userId, int $fromPointId, int $toPointId, int $amount)
    {
        # 检查用户ID
        if ($userId <= 0) {
            return '用户ID无效';
        }

        # 检查积分类型
        if ($fromPointId === $toPointId) {
            return '源积分类型和目标积分类型不能相同';
        }

        # 检查积分数量
        if ($amount <= 0) {
            return '流转积分数量必须大于0';
        }

        # 检查源积分余额
        $checkResult = User::checkBalance($userId, $fromPointId, $amount);
        if ($checkResult !== true) {
            return $checkResult;
        }

        return true;
    }
}