<?php

namespace mt;

use phpcommon;

class HashRateCommon {

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

    public static function getCurrentPeriod()
    {
        foreach (self::getMetaList() as $meta) {
            if (myself()->_getNowTime() >= strtotime($meta['start_time']) &&
                myself()->_getNowTime() <= strtotime($meta['end_time'])) {
                return $meta;
            }
        }
        return array();
    }

    public static function getNextPeriod()
    {
        $metaList = self::getMetaList();
        foreach ($metaList as $key => $meta) {
            if ($key == 1 && myself()->_getNowTime() <= strtotime($meta['start_time'])) {
                return $meta;
            }
            if ($key > 1 &&
                myself()->_getNowTime() >= strtotime($metaList[$key-1]['end_time']) &&
                myself()->_getNowTime() <= strtotime($metaList[$key]['start_time'])) {
                return $meta;
            }
        }
        return array();
    }

    public static function getLastPeriod()
    {
        $metaList = self::getMetaList();
        $count = count($metaList);
        foreach ($metaList as $key => $meta) {
            if (myself()->_getNowTime() >= strtotime($metaList[$key]['end_time']) &&
                myself()->_getNowTime() <= strtotime($metaList[$key+1]['start_time'])) {
                return $meta;
            }
            if ($key == $count && myself()->_getNowTime() >= strtotime($meta['end_time'])) {
                return $meta;
            }
        }
        return array();
    }


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

    protected static $metaList;

}