<?php

namespace mt;

use phpcommon;

class BattleRandAttribute {

    public static function get($id)
    {
        return getXVal(self::getMetaList(), $id);
    }


    public static function getByWeight($invoke,$quality){
        $metaList = self::getByInvoke($invoke,$quality);
        $totalWeight = 0;
        $randMeta = array();
        if ($metaList){
            foreach ($metaList as $meta){
                $totalWeight += $meta['qualityWeight'];
            }
            $rnd = rand() % $totalWeight;
            $currWeight = 0;
            foreach ($metaList as $meta){
                $currWeight += $meta['qualityWeight'];
                if ($currWeight > $rnd) {
                    $randMeta =  $meta;
                    break;
                }
            }
        }
        return $randMeta;
    }

    public static function getRandAttr($randMeta){
        $attrArray = array();
        $strs = explode('|', $randMeta['attributeRange']);
        foreach ($strs as $str){
            $attrStr = explode(':', $str);
            if (count($attrStr) == 3){
                $rnd = rand($attrStr[1]*100000 , $attrStr[2]*100000) / 100000;
                array_push($attrArray,array(
                    "attr_id" => $attrStr[0],
                    "val" => $rnd,
                ));
            }
        }
        return $attrArray;
    }

    public static function mergeAttr($attr1 , $attr2){
        $mergedAttr = array_merge($attr1, $attr2);
        $newAttr = array();
        foreach ($mergedAttr as $attr){
            if (isset($newAttr[$attr['attr_id']])){
                $newAttr[$attr['attr_id']]['val'] += $attr['val'];
            }else{
                $newAttr[$attr['attr_id']] = $attr;
            }
        }
        return array_values($newAttr);
    }

    public static function getByInvoke($invoke,$quality){
        $metaList = array();
        foreach (self::getMetaList() as $meta){
            $rateNeed = explode('|', $meta['rareNeed']);
            if ($meta['invoke'] == $invoke && in_array($quality,$rateNeed)){
                array_push($metaList,$meta);
            }
        }
        return $metaList;
    }

    protected static function getMetaList()
    {
        if (!self::$metaList) {
            self::$metaList = getMetaTable('battleRandAttribute@battleRandAttribute.php');
        }
        return self::$metaList;
    }

    protected static $metaList;

}