<?php

namespace app\discount\service;

use app\discount\model\DiscountCoupon;
use app\discount\model\DiscountCouponMy;
use app\integral\logic\Integral;
use Godruoyi\Snowflake\Snowflake;
use think\facade\Db;

class MyCoupon extends Base
{

    /**
     * 插入我的优惠券
     * @param array $coupon_ids 免费领取的优惠券ID数组
     * @date 2022-10-17
     */
    public function insertMyCoupon($coupon_ids = [])
    {
        $coupon_model = new DiscountCoupon();
        $coupon_my_model = new DiscountCouponMy();
        $integral_logic = new Integral();
        $integral_service = new \app\integral\service\Integral();
        $snow_flake_class = new Snowflake();

        // 没有优惠券ID，直接返回成功
        if (empty($coupon_ids)) {
            return sendSuccessArray();
        }

        // 获取优惠券列表
        $coupon_list = $coupon_model->listCoupon([
            ['id', 'in', $coupon_ids]
        ], 'id,type,name,price,integral,brief,limit_price,total_number,receive_number,per_people_number,validity_type,start_time,end_time,validity_days');


        // 获取我领取的优惠券以及张数
        $my_coupon_number = $coupon_my_model->countMyCouponByCoupon();

        // 我可以兑换的优惠券列表
        $coupon_my_list = [];

        $integral_log = []; //积分兑换优惠券数据明细
        // 转为数组
        $coupon_list = $coupon_list->toArray();

        foreach ($coupon_list as $k => $v) {
            // 个人领取数量到达上限  有领取该优惠券 && 限制数量 && 领取张数>=限制张数
            if (isset($my_coupon_number[$v['id']]) && $v['per_people_number'] != 0 && $my_coupon_number[$v['id']] >= $v['per_people_number']) {
                continue;
            }

            // 优惠券已抢光
            if ($v['total_number'] - $v['receive_number'] <= 0) {
                continue;
            }

            // 我的优惠券数据
            $my_coupon = [
                // 雪花ID
                'id' => $snow_flake_class->id(),
                'uid' => $this->mid,
                'user_agent' => $this->userAgent,
                'user_id' => $this->userId,
                'coupon_id' => $v['id'],
                // 优惠券类型 1--领取优惠券 2--首关优惠券 3--下单给自己送优惠券 4--分享给自己送优惠券 5--分享给别人送优惠券 6--生日优惠券 7--积分商城兑换优惠券 8--兑换码兑换优惠券
                'coupon_type' => $v['type'],
                'name' => $v['name'],
                'limit_price' => $v['limit_price'],
                'price' => $v['price'],
                'brief' => $v['brief'],
                'status' => 1,
                'remark' => serialize([
                    'coupon_id' => $v['id']
                ]),
                'create_time' => time(),
                'update_time' => time()
            ];

            // 优惠券有效时间类型  1--固定日期 2--X天后 3--永久有效
            if ($v['validity_type'] == 1) {
                $my_coupon['is_forever'] = 0;
                $my_coupon['start_time'] = $v['start_time'];
                $my_coupon['end_time'] = $v['end_time'];
            } else if ($v['validity_type'] == 2) {
                $my_coupon['is_forever'] = 0;
                $my_coupon['start_time'] = strtotime(date("Y-m-d"));
                $my_coupon['end_time'] = strtotime(date("Y-m-d")) + ($v['validity_days'] + 1) * 86400;
            } else if ($v['validity_type'] == 3) {
                $my_coupon['is_forever'] = 1;
                $my_coupon['start_time'] = strtotime(date("Y-m-d"));
                $my_coupon['end_time'] = 0;
            }

            // 追加到待添加我的优惠券列表
            $coupon_my_list[] = $my_coupon;

            // 优惠券表数据
            $coupon_update_list[] = [
                'id' => $v['id'],
                // 已领取人数增加
                'receive_number' => Db::raw('receive_number + 1'),
                'update_time' => time()
            ];

            // type=7时，积分兑换优惠券
            if ($v['type'] == 7) {
                // 积分大于0时需要记录
                if ($v['integral'] >= 0) {
                    $integral_log[] = [
                        // 兑换优惠券的积分数量
                        'integral' => $v['integral'],
                        'coupon_my_id' => $my_coupon['id'],
                        'coupon_id' => $v['id']
                    ];
                }
            }
        }

        // 没有可以领取的优惠券
        if (empty($coupon_my_list)) {
            return sendErrorArray(3001, '没有可以领取的优惠券,有可能是优惠券可领取张数已达上限');
        }

        // 批量插入我的优惠券
        $res = $coupon_my_model->insertAll($coupon_my_list);
        if (!$res) {
            return sendErrorArray(3002, '领取失败');
        }

        // 批量更新优惠券库存
        $res = $coupon_model->saveAll($coupon_update_list);
        if (!$res) {
            return sendErrorArray(3003, '领取失败');
        }

        // 如果有积分兑换优惠券，则扣除积分
        if (!empty($integral_log)) {
            foreach ($integral_log as $k => $v) {

                $res = $integral_service->change($this->userId, 6, -$v['integral'], '积分兑换优惠券', '', [
                    'coupon_id' => $v['coupon_id'],
                    'coupon_my_id' => $v['coupon_my_id']
                ]);

                if ($res['code'] != 0) {
                    return $res;
                }
            }
        }

        return sendSuccessArray();
    }

    /**
     * 选择我的优惠券列表
     * @param float $price 商品总价钱
     * @date 2022-10-17
     */
    public function listChooseCoupon($price)
    {
        $coupon_my_model = new DiscountCouponMy();

        // 可使用优惠券
        $able_list = [];
        // 不可使用优惠券
        $unable_list = [];

        // 获取所有有效优惠券
        $where = [
            ['uid', '=', $this->mid],
            ['user_id', '=', $this->userId],
            ['status', '=', 1]
        ];
        $field = 'id,name,price,brief,limit_price,start_time,end_time,is_forever,status';
        $order = 'price desc';
        $my_coupon_list = $coupon_my_model->listMyCoupon($where, $field, $order);
        foreach ($my_coupon_list as $k => $v) {
            if ($v['limit_price'] <= $price) {
                // 是否可以使用 1--可以使用 2--不可以使用
                $v['is_able'] = 1;
                $v['unable_reason'] = '';
                $able_list[] = $v;
            } else {
                $v['is_able'] = 0;
                $v['unable_reason'] = '还差' . ($v['limit_price'] - $price) . '元可使用优惠券';
                $unable_list[] = $v;
            }
        }

        return sendSuccessArray([
            'able_list' => $able_list,
            'unable_list' => $unable_list
        ]);
    }

}