<?php
// +------------------------------------------------+
// |http://www.cjango.com                           |
// +------------------------------------------------+
// | 修复BUG不是一朝一夕的事情，等我喝醉了再说吧！  |
// +------------------------------------------------+
// | Author: 小陈叔叔 <Jason.Chen>                  |
// +------------------------------------------------+
namespace tools;

/**
 * 时间戳生成类
 */
class Time
{

    /**
     * [今日/某日 开始和结束的时间戳]
     * @param  date  $date 标准的时间日期格式 Y-m-d
     * @return boolean|array
     */
    public static function day($date = '', $rule = 'Y-m-d')
    {
        if (!empty($date) && !Verify::isDate($date, $rule)) {
            return false;
        }

        $date  = !empty($date) ? $date : 'today';
        $start = strtotime($date);
        $end   = $start + 86399;

        return [$start, $end];
    }

    /**
     * 返回本周开始和结束的时间戳
     * @return array
     */
    public static function week()
    {
        $timestamp = time();
        return [
            strtotime(date('Y-m-d', strtotime("+0 week Monday", $timestamp))),
            strtotime(date('Y-m-d', strtotime("+0 week Sunday", $timestamp))) + 24 * 3600 - 1,
        ];
    }

    /**
     * 返回本月开始和结束的时间戳
     * @return array
     */
    public static function month($month = '', $year = '')
    {
        if (empty($month)) {
            $month = date('m');
        } elseif (!is_numeric($month) || $month < 1 || $month > 12) {
            return false;
        }

        if (empty($year)) {
            $year = date('Y');
        } elseif (!is_numeric($year) || $year < 1970 || $year > 2038) {
            return false;
        }

        $start = mktime(0, 0, 0, $month, 1, $year);
        $end   = mktime(23, 59, 59, $month, date('t', $start), $year);
        return [$start, $end];
    }

    /**
     * 今年/某年 开始和结束的时间戳
     * @return boolean|array
     */
    public static function year($year = '')
    {
        if (empty($year)) {
            $year = date('Y');
        } elseif (!is_numeric($year) || $year < 1970 || $year > 2038) {
            return false;
        }

        return [
            mktime(0, 0, 0, 1, 1, $year),
            mktime(23, 59, 59, 12, 31, $year),
        ];
    }

    /**
     * [日期合法性校验]
     * @param  [type] $data 2019-01-01
     * @return boolean
     */
    public static function dateVerify($date, $rule = 'Y-m-d')
    {
        $unixTime = strtotime($date);
        if (!$unixTime) {
            return false;
        }

        if (date($rule, $unixTime) == $date) {
            return true;
        } else {
            return false;
        }
    }
}