<?php

namespace app\common\behavior;

use app\common\Service\LotteryChanceService;

/**
 * 订单相关抽奖钩子
 * 在订单状态变更时自动检查并分发抽奖机会
 */
class LotteryOrderHook
{
    /**
     * 订单支付完成后的钩子
     * @param array $params 订单信息
     */
    public function orderPaid($params)
    {
        try {
            $orderInfo = $params['order'] ?? [];
            $userId = $orderInfo['user_id'] ?? 0;
            
            if (!$userId || empty($orderInfo)) {
                return;
            }

            // 构建订单信息用于抽奖条件验证
            $lotteryOrderInfo = [
                'id' => $orderInfo['id'] ?? 0,
                'user_id' => $userId,
                'total_amount' => $orderInfo['total_amount'] ?? 0,
                'goods' => $this->getOrderGoods($orderInfo['id'] ?? 0),
                'type' => 'order'
            ];

            // 检查并分发抽奖机会
            $grantedChances = LotteryChanceService::checkAndGrantChanceForOrder($lotteryOrderInfo, $userId);
            
            // 可以在这里添加通知逻辑，告知用户获得了抽奖机会
            if (!empty($grantedChances)) {
                $this->notifyUserGetChances($userId, $grantedChances);
            }
            
        } catch (\Exception $e) {
            // 记录错误日志，但不影响订单正常流程
            trace('抽奖机会分发失败: ' . $e->getMessage(), 'error');
        }
    }

    /**
     * 充值完成后的钩子
     * @param array $params 充值信息
     */
    public function rechargePaid($params)
    {
        try {
            $rechargeInfo = $params['recharge'] ?? [];
            $userId = $rechargeInfo['user_id'] ?? 0;
            
            if (!$userId || empty($rechargeInfo)) {
                return;
            }

            // 构建充值信息用于抽奖条件验证
            $lotteryRechargeInfo = [
                'id' => $rechargeInfo['id'] ?? 0,
                'user_id' => $userId,
                'amount' => $rechargeInfo['amount'] ?? 0,
                'type' => 'recharge'
            ];

            // 检查并分发抽奖机会
            $grantedChances = LotteryChanceService::checkAndGrantChanceForRecharge($lotteryRechargeInfo, $userId);
            
            // 可以在这里添加通知逻辑，告知用户获得了抽奖机会
            if (!empty($grantedChances)) {
                $this->notifyUserGetChances($userId, $grantedChances);
            }
            
        } catch (\Exception $e) {
            // 记录错误日志，但不影响充值正常流程
            trace('抽奖机会分发失败: ' . $e->getMessage(), 'error');
        }
    }

    /**
     * 获取订单商品信息
     * @param int $orderId 订单ID
     * @return array
     */
    private function getOrderGoods($orderId)
    {
        if (!$orderId) {
            return [];
        }

        try {
            $orderGoods = \app\common\model\OrderGoods::where('order_id', $orderId)
                                                     ->field('goods_id,goods_sku_id,goods_num')
                                                     ->select();
            
            $goods = [];
            foreach ($orderGoods as $item) {
                $goods[] = [
                    'goods_id' => $item->goods_id,
                    'goods_sku_id' => $item->goods_sku_id,
                    'nums' => $item->goods_num
                ];
            }
            
            return $goods;
        } catch (\Exception $e) {
            trace('获取订单商品失败: ' . $e->getMessage(), 'error');
            return [];
        }
    }

    /**
     * 通知用户获得抽奖机会
     * @param int $userId 用户ID
     * @param array $grantedChances 获得的抽奖机会
     */
    private function notifyUserGetChances($userId, $grantedChances)
    {
        try {
            // 这里可以接入消息推送系统
            // 例如：站内信、短信、微信消息等
            
            foreach ($grantedChances as $chance) {
                $message = sprintf(
                    '恭喜您获得「%s」%d次抽奖机会，快去参与抽奖吧！',
                    $chance['activity_name'],
                    $chance['chances']
                );
                
                // 发送站内消息示例
                $this->sendInternalMessage($userId, '抽奖机会获得通知', $message);
            }
            
        } catch (\Exception $e) {
            trace('抽奖机会通知发送失败: ' . $e->getMessage(), 'error');
        }
    }

    /**
     * 发送站内消息
     * @param int $userId 用户ID
     * @param string $title 消息标题
     * @param string $content 消息内容
     */
    private function sendInternalMessage($userId, $title, $content)
    {
        // 这里需要根据实际的消息系统实现
        // 示例代码：
        /*
        $messageData = [
            'user_id' => $userId,
            'title' => $title,
            'content' => $content,
            'type' => 'lottery',
            'createtime' => time()
        ];
        
        \app\common\model\Message::create($messageData);
        */
    }
}