<?php

namespace App\Models;

class LotteryGift extends Model
{
    static $levels = [
        '1' => '一等奖',
        '2' => '二等奖',
        '3' => '三等奖',
        '4' => '四等奖',
        '5' => '五等奖',
        '6' => '六等奖',
        '7' => '七等奖',
        '8' => '谢谢参与',
    ];

    static $chances = [
        '1' => 0,
        '2' => 1,
        '3' => 2,
        '4' => 7,
        '5' => 3,
        '6' => 5,
        '7' => 4,
        '8' => 6,
    ];

    static $types = [
        '0' => '谢谢参与',
        '1' => '正常奖品',
    ];

    static $class = [
        'activity' => 'App\Models\Activity',
        'coupon'   => 'RuLong\Coupon\Models\CouponInfo',
        'goods'    => 'App\Models\GoodsParams',
    ];

    public function lottery()
    {
        return $this->belongsTo(Lottery::class)->withDefault();
    }

    public function item()
    {
        return $this->morphTo();
    }

    public function getLevelTextAttribute()
    {
        return self::$levels[$this->level] ?? '未知';
    }

    public function getTypeTextAttribute()
    {
        return self::$types[$this->type] ?? '未知';
    }

    public function getClassAttribute()
    {
        foreach (self::$class as $key => $class) {
            if ($this->item_type == $class) {
                return $key;
            }
        }

        return 'Null';
    }

    public function getChanceTextAttribute()
    {
        $all = $this->lottery->gifts()->sum('chance');
        return round($this->chance / $all * 100, 2);
    }

    public function getTitle()
    {
        if ($this->item) {
            return $this->item->getTitle();
        } else {
            return '谢谢参与';
        }
    }

}