<?php

namespace mt;

use phpcommon;

class AttrHelper {

    public static function mergeAttr(&$tarAttrs, $srcAttrs)
    {
        foreach ($srcAttrs as $srcAttr) {
            $found = false;
            foreach ($tarAttrs as &$tarAttr) {
                if ($tarAttr['attr_id'] == $srcAttr['attr_id'] &&
                    $tarAttr['type'] == $srcAttr['type']) {
                    $tarAttr['val'] += $srcAttr['val'];
                    $found = true;
                    break;
                }
            }//end for tarAttrs
            if (!$found) {
                array_push($tarAttrs, $srcAttr);
            }
        }
    }

    public static function addRandAttrs($cfgAttrs, $num, $baseAttrs, &$dbAttrs)
    {
        $matchedAttrs = array();
        foreach ($cfgAttrs as $cfgAttr) {
            $attrId = $cfgAttr[0];
            $type = $cfgAttr[1];
            if (array_find($dbAttrs, function($val) use ( $attrId, $type) {
                return $val['attr_id'] == $attrId && $val['type'] == $type;
            })) {
                array_push($matchedAttrs, $cfgAttr);
            } else if (array_find($baseAttrs, function($val) use ($attrId, $type) {
                return $val['attr_id'] == $attrId && $val['type'] == $type;
            })) {
                array_push($matchedAttrs, $cfgAttr);
            }
        }
        shuffle($matchedAttrs);
        for ($i = 0; $i < $num; ++$i) {
            if ($i < $matchedAttrs) {
                $cfgAttr = $matchedAttrs[$i];

                $attrId = $cfgAttr[0];
                $type = $cfgAttr[1];
                $val = rand($cfgAttr[2], $cfgAttr[3]);
                $found = false;
                foreach ($dbAttrs as &$attr) {
                    if ($attr['attr_id'] == $attrId &&
                        $attr['type'] == $type) {
                        $found = true;
                    }
                }
                if ($found) {
                    array_push($dbAttrs, array(
                        'attr_id' => $attrId,
                        'type' => $type,
                        'val' => $val
                    ));
                }
            }
        }
    }

    public static function getAbsVal($randAttr, $attrId)
    {
        if (!$randAttr) {
            return null;
        }
        foreach ($randAttr as $attr){
            if ($attr['attr_id'] == $attrId &&
                $attr['type'] == kHAT_ABS_VAL) {
                return $attr;
            }
        }
        return null;
    }

    public static function getRateVal($randAttr, $attrId)
    {
        if (!$randAttr) {
            return null;
        }
        foreach ($randAttr as $attr){
            if ($attr['attr_id'] == $attrId &&
                $attr['type'] == kHAT_RATE_VAL) {
                return $attr;
            }
        }
        return null;
    }

    public static function getRateValEx($randAttr, $attrId, $defVal = 0)
    {
        if (!$randAttr) {
            return $defVal;
        }
        foreach ($randAttr as $attr){
            if ($attr['attr_id'] == $attrId &&
                $attr['type'] == kHAT_RATE_VAL) {
                return $attr['val'] / 100.0;
            }
        }
        return $defVal;
    }

    public static function getAttrVal($randAttr, $attrId, $defVal)
    {
        if (!$randAttr) {
            return $defVal;
        }
        foreach ($randAttr as $attr){
            if ($attr['attr_id'] == $attrId) {
                return $attr['val'];
            }
        }
        return $defVal;
    }

    public static function hasAttr($attr, $attrId)
    {
        if (!$randAttr) {
            return false;
        }
        foreach ($randAttr as $attr){
            if ($attr['attr_id'] == $attrId) {
                return true;
            }
        }
        return false;
    }

}