<?php


namespace services;

require_once('mt/LootConfig.php');

use mt;

class LootService
{
    const EMPTY_DROP_TYPE = 1;          //空掉落
    const WHERE_DROP_TYPE = 2;          //条件掉落
    const ORDER_DROP_TYPE = 3;           //有序全掉落
    const HAVE_RAND_DROP_TYPE = 4;      //有放回随机掉落
    const NOT_HAVE_RAND_DROP_TYPE = 5;  //无放回随机掉落
    const DYN_RAND_DROP_TYPE = 6;       //动态概率掉落
    const STEP_RAND_DROP_TYPE = 7;      //步长随机掉落

    public static function dropOutReward($dropIndex){
        $lootMeta =  mt\LootConfig::find($dropIndex);
        if (! $lootMeta){
            return ;
        }
        $items = array();
        switch ($lootMeta['method']){
//            case self::EMPTY_DROP_TYPE: {
//
//            }
//            break;
            case self::WHERE_DROP_TYPE: {
                //暂定
            }
            break;
            case self::ORDER_DROP_TYPE: {
                $items = self::disposeDropContent1($lootMeta);
            }
            break;
            case self::HAVE_RAND_DROP_TYPE: {
                $items = self::disposeDropContent2($lootMeta);
            }
            case self::NOT_HAVE_RAND_DROP_TYPE: {
                $items = self::disposeDropContent3($lootMeta);
            }
            break;
            case self::DYN_RAND_DROP_TYPE: {
                $items = self::disposeDropContent4($lootMeta);
            }
            break;
        }
        return $items;
    }

    private static function disposeDropContent4($lootMeta) {
        $totalTimes = myself()->_getV(TN_TOTAL_LOOT_TIMES,0);
        $recycleTimes = myself()->_getV(TN_TOTAL_LOOT_TIMES,1);
        $contentArr = explode("|",$lootMeta['content']);
        $initTimes = $contentArr[0];
        $po = $contentArr[1];
        $pd = $contentArr[2];
        $pm = $contentArr[3];
        $index1  =  $contentArr[4];
        $index2  =  $contentArr[5];
        if ($totalTimes == 0){
            $recycleTimes = $initTimes;
        }
        $p = min($po + ($recycleTimes-1) * $pd,$pm) * 100 ;
        $rnd = rand(1,100);
        myself()->_incV(TN_TOTAL_LOOT_TIMES,0,1);
        if ($rnd <= $p){
            myself()->_setV(TN_TOTAL_LOOT_TIMES,1,1);
            return self::dropOutReward($index1);
        }else{
            myself()->_incV(TN_TOTAL_LOOT_TIMES,1,1);
            return self::dropOutReward($index2);
        }
    }

    private static function disposeDropContent3($lootMeta) {
        $numPara = explode("|",$lootMeta['numPara']);
        $items = array();
        $times = $numPara[0];
        $number = $numPara[1];
        $contentArr = explode("|",$lootMeta['content']);
        for ($i=0;$i<$times;$i++){
            for ($j=0;$j<$number;$j++){
                self::randWeight2($contentArr,$items);
            }
        }
        return $items;
    }

    private static function randWeight2(&$contentArr,&$items){
        $totalWeight = 0;
        foreach ($contentArr as $value){
            $contentArrEx = explode(":",$value);
            $totalWeight += $contentArrEx[3];
        }
        $rnd = rand() % $totalWeight;
        $currWeight = 0;
        foreach ($contentArr as $key=>$value){
            $contentArrEx = explode(":",$value);
            $currWeight += $contentArrEx[3];
            if ($currWeight > $rnd){

                switch ($contentArrEx[0]){
                    case 1: {
                        array_push($items,array(
                            "item_id" => $contentArrEx[1],
                            "item_num" => $contentArrEx[2],
                        ));
                    }
                        break;
                    case 2: {
                        $rewards = self::dropOutReward($contentArrEx[1]);
                        $items = array_merge($items,$rewards);
                    }
                        break;
                }
                unset($contentArr[$key]);
                break;
            }
        }
    }

    private static function disposeDropContent2($lootMeta) {
        $numPara = explode("|",$lootMeta['numPara']);
        $items = array();
        $times = $numPara[0];
        $number = $numPara[1];
        for ($i=0;$i<$times;$i++){
            for ($j=0;$j<$number;$j++){
                $result = self::randWeight($lootMeta['content']);
//                array_push($items,$result);
                $items = array_merge($items,$result);
            }
        }
        $hashItems = array();
        foreach ($items as $item){
            if (isset($hashItems[$item['item_id']])){
                $hashItems[$item['item_id']]['item_num'] += $item['item_num'];
            }else{
                $hashItems[$item['item_id']] = $item;
            }
        }
        $finalItems = array();
        foreach ($hashItems as $hashItem){
            array_push($finalItems,$hashItem);
        }
        return $finalItems;
    }

    private static function randWeight($content){
        $contentArr = explode("|",$content);
        $totalWeight = 0;
        foreach ($contentArr as $value){
            $contentArrEx = explode(":",$value);
            $totalWeight += $contentArrEx[3];
        }
        $rnd = rand() % $totalWeight;
        $currWeight = 0;
        $items = array();
        foreach ($contentArr as $value){
            $contentArrEx = explode(":",$value);
            $currWeight += $contentArrEx[3];
            if ($currWeight > $rnd){
                switch ($contentArrEx[0]){
                    case 1: {
                        array_push($items,array(
                            "item_id" => $contentArrEx[1],
                            "item_num" => $contentArrEx[2],
                        ));
                    }
                    break;
                    case 2: {
                        $items = self::dropOutReward($contentArrEx[1]);
                    }
                    break;
                }
                break;
            }
        }
        return $items;
    }


    private static function disposeDropContent1($lootMeta){
        $contentArr = explode("|",$lootMeta['content']);
        $items = array();
        if (count($contentArr) > 0){
            foreach ($contentArr as $value){
                $contentArrEx = explode(":",$value);
                switch ($contentArrEx[0]){
                    case 1: {
                        array_push($items,array(
                            "item_id" => $contentArrEx[1],
                            "item_num" => $contentArrEx[2],
                        ));
                    }
                    break;
                    case 2: {
                        $rewards = self::dropOutReward($contentArrEx[1]);
                        $items = array_merge($items,$rewards);
                    }
                    break;
                }
            }
        }
        return $items;
    }

}