<?php

namespace app\common\model\lottery;

use think\Model;
use traits\model\SoftDelete;

/**
 * 抽奖参与条件模型
 */
class LotteryCondition extends Model
{
    use SoftDelete;

    // 表名
    protected $name = 'shop_lottery_condition';
    
    // 开启自动写入时间戳字段
    protected $autoWriteTimestamp = 'int';
    // 定义时间戳字段名
    protected $createTime = 'createtime';
    protected $updateTime = 'updatetime';
    protected $deleteTime = 'deletetime';

    // 追加属性
    protected $append = [
        'type_text',
        'goods_rule_text',
        'goods_ids_list'
    ];

    // 条件类型常量
    const TYPE_GOODS = 1;           // 购买指定商品
    const TYPE_ORDER_AMOUNT = 2;    // 单笔订单消费满额
    const TYPE_RECHARGE = 3;        // 单次充值满额
    const TYPE_ACCUMULATE = 4;      // 活动期间累计消费满额

    // 商品规则常量
    const GOODS_RULE_INCLUDE = 1;   // 指定商品参与
    const GOODS_RULE_EXCLUDE = 2;   // 指定商品不可参与

    /**
     * 关联活动
     */
    public function activity()
    {
        return $this->belongsTo('LotteryActivity', 'activity_id');
    }

    /**
     * 获取条件类型文本
     */
    public function getTypeTextAttr($value, $data)
    {
        $types = [
            self::TYPE_GOODS => '购买指定商品',
            self::TYPE_ORDER_AMOUNT => '单笔订单消费满额',
            self::TYPE_RECHARGE => '单次充值满额',
            self::TYPE_ACCUMULATE => '活动期间累计消费满额'
        ];
        return isset($types[$data['type']]) ? $types[$data['type']] : '未知';
    }

    /**
     * 获取商品规则文本
     */
    public function getGoodsRuleTextAttr($value, $data)
    {
        $rules = [
            self::GOODS_RULE_INCLUDE => '指定商品参与',
            self::GOODS_RULE_EXCLUDE => '指定商品不可参与'
        ];
        return isset($rules[$data['goods_rule']]) ? $rules[$data['goods_rule']] : '';
    }

    /**
     * 获取商品ID列表
     */
    public function getGoodsIdsListAttr($value, $data)
    {
        return !empty($data['goods_ids']) ? json_decode($data['goods_ids'], true) : [];
    }

    /**
     * 设置商品ID列表
     */
    public function setGoodsIdsAttr($value)
    {
        return is_array($value) ? json_encode($value) : $value;
    }

    /**
     * 验证订单是否满足条件
     */
    public function validateOrder($orderInfo)
    {
        switch ($this->type) {
            case self::TYPE_GOODS:
                return $this->validateGoodsCondition($orderInfo);
            case self::TYPE_ORDER_AMOUNT:
                return $this->validateOrderAmountCondition($orderInfo);
            case self::TYPE_RECHARGE:
                return $this->validateRechargeCondition($orderInfo);
            default:
                return false;
        }
    }

    /**
     * 验证商品条件
     */
    private function validateGoodsCondition($orderInfo)
    {
        if (empty($orderInfo['goods']) || empty($this->goods_ids_list)) {
            return false;
        }

        $orderGoodsIds = array_column($orderInfo['goods'], 'goods_id');
        $conditionGoodsIds = $this->goods_ids_list;
        $intersection = array_intersect($orderGoodsIds, $conditionGoodsIds);

        if ($this->goods_rule == self::GOODS_RULE_INCLUDE) {
            // 指定商品参与：订单中必须包含指定商品
            return !empty($intersection);
        } else {
            // 指定商品不可参与：订单中不能包含指定商品
            return empty($intersection);
        }
    }

    /**
     * 验证订单金额条件
     */
    private function validateOrderAmountCondition($orderInfo)
    {
        $orderAmount = $orderInfo['total_amount'] ?? 0;
        return $orderAmount >= $this->condition_value;
    }

    /**
     * 验证充值条件
     */
    private function validateRechargeCondition($orderInfo)
    {
        if (($orderInfo['type'] ?? '') !== 'recharge') {
            return false;
        }
        
        $rechargeAmount = $orderInfo['amount'] ?? 0;
        return $rechargeAmount >= $this->condition_value;
    }

    /**
     * 验证累计消费条件
     */
    public function validateAccumulateCondition($userId, $activityId)
    {
        $activity = LotteryActivity::find($activityId);
        if (!$activity) {
            return false;
        }

        // 计算活动期间用户累计消费
        $totalAmount = \app\common\model\Order::where('user_id', $userId)
                                             ->where('status', 'paid')
                                             ->where('createtime', '>=', $activity->start_time)
                                             ->where('createtime', '<=', $activity->end_time)
                                             ->sum('total_amount');

        return $totalAmount >= $this->condition_value;
    }

    /**
     * 获取活动的有效条件
     */
    public static function getValidConditions($activityId)
    {
        return static::where('activity_id', $activityId)
                     ->where('status', 1)
                     ->order('id', 'asc')
                     ->select();
    }

    /**
     * 检查条件是否可重复获得奖励
     */
    public function canRepeat()
    {
        return $this->is_repeatable == 1;
    }

    /**
     * 获取奖励次数
     */
    public function getRewardTimes()
    {
        return $this->reward_times ?: 1;
    }
}