<?php

namespace mt;

use phpcommon;

class MarketBatch {

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

    public static function traverseMeta($cb)
    {
        foreach (self::getMetaList() as $meta) {
            $cb($meta);
        }
    }

    public static function getCurrentBatch()
    {
        self::mustBeSortedList();
        $currentMeta = null;
        foreach (self::$sortedList as $meta) {
            if (!$currentMeta) {
                $currentMeta = $meta;
                continue;
            }
            if (myself()->_getNowTime() > $meta['start_time']) {
                return $meta;
            }
        }
        return $currentMeta;
    }

    public static function getCountdown($meta)
    {
        $countdown = max(0, $meta['start_time'] - myself()->_getNowTime());
        return $countdown;
    }

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

    protected static function mustBeSortedList()
    {
        if (!self::$sortedList) {
            self::$sortedList = array();
            foreach (self::getMetaList() as $meta) {
                array_push(self::$sortedList, $meta);
            }
            usort(self::$sortedList, function ($a, $b) {
                if ($a['start_time'] == $b['start_time']) {
                    die(json_encode(array(
                        'errcode' => 500,
                        'errmsg' => 'server internal error'
                    )));
                }
                return $a['start_time'] < $b['start_time'];
            });
        }
    }

    protected static $metaList;
    protected static $sortedList;

}