<?php namespace ZN\DateTime;
/**
 * ZN PHP Web Framework
 * 
 * "Simplicity is the ultimate sophistication." ~ Da Vinci
 * 
 * @package ZN
 * @license MIT [http://opensource.org/licenses/MIT]
 * @author  Ozan UYKUN [ozan@znframework.com]
 */

use ZN\Lang;

class Date extends DateTimeCommon implements DateTimeCommonInterface
{
    /**
     * Protected is days
     * 
     * @var array
     */
    protected $isDays = 
    [
        'isSunday', 
        'isMonday', 
        'isTuesday', 
        'isWednesday', 
        'isThursday', 
        'isFriday', 
        'isSaturday'
    ];

    /**
     * Protected is months
     * 
     * @var array
     */
    protected $isMonths = 
    [
        'isJanuary', 
        'isFebruary', 
        'isMarch', 
        'isApril', 
        'isMay', 
        'isJune', 
        'isJuly', 
        'isAugust', 
        'isSeptember', 
        'isOctober', 
        'isNovember', 
        'isDecember'
    ];

    /**
     * Magic call
     * 
     * @param string $method
     * @param array  $parameters
     * 
     * @return mixed
     */
    public function __call($method, $parameters)
    {
        if( $method[0] === 'l' )
        {
            $method = substr($method, 1); $langParam = end($parameters);

            $this->lang = isset($this->config['date'][$langParam]) ? $langParam : Lang::get();

            $return = $this->$method(...$parameters);

            $this->lang = NULL;
            
            return $return;
        }

        $parts = $this->splitUpperCase($method);
        
        $methodType = $parts[0] ?? NULL;

        if( in_array($method, $this->isDays) )
        {
            return $this->isDay($method, $parameters[0] ?? NULL);
        }
        elseif( in_array($method, $this->isMonths) )
        {
            return $this->isMonth($method, $parameters[0] ?? NULL);
        }
        elseif( in_array($methodType, ['next', 'prev']) )
        {
            return $this->$methodType($parameters[0] ?? NULL, ($type = strtolower($parts[1] ?? '')) . ($parts[2] ?? NULL), $type);
        }

        return parent::__call($method, $parameters);
    }

    /**
     * Day count
     * 
     * @param string $date = NULL
     * 
     * @return int
     */
    public function dayCount(?string $date = NULL) : int
    {
        $date = $date ?? $this->now();

        return cal_days_in_month(CAL_GREGORIAN, (int) $this->convert($date, 'm'), (int) $this->convert('Y'));
    }

    /**
     * Gets year quarter
     * 
     * @param string $date = NULL
     * 
     * @return string
     */
    public function quarter(?string $date = NULL)
    {
        return ceil($this->convert($date ?? $this->now(), 'n') / 3);
    }
    
    /**
     * Gets current datetime.
     * 
     * @return string
     */
    public function now()
    {
        return date('Y-m-d H:i:s');
    }

    /**
     * Date check
     * 
     * @param string $date
     * 
     * @return bool
     */
    public function check(string $date) : bool
    {
        $dateEx    = explode('/', $this->convert($date, '{year}/{monthNumber}/{dayNumber}'));
        $validDate = implode('/', $dateEx);

        if( $date !== $validDate && $validDate === '1970/1/1' )
        {
            return false;
        }

        return checkdate($dateEx[1] ?? NULL, $dateEx[2] ?? NULL, $dateEx[0] ?? NULL); 
    }

    /**
     * Gives the active date information.
     * 
     * @param string $clock = '%H:%M:%S'
     * 
     * @return string
     */
    public function current(string $date = 'd.m.Y') : string
    {
        return $this->returnDatetime($date);
    }

    /**
     * Gives the active date information.
     * 
     * @param string $clock = '%H:%M:%S'
     * 
     * @return string
     */
    public function default(string $date = '{year}/{monthNumber0}/{dayNumber0}') : string
    {
        return $this->returnDatetime($date);
    }

    /**
     * Converts date information.
     * 
     * @param string $date
     * @param string $format = '%d-%B-%Y %A, %H:%M:%S'
     * 
     * @return string
     */
    public function convert(string $date, string $format = 'd-m-Y H:i:s') : string
    {
        return $this->returnDatetime($format, strtotime($date));
    }

    /**
     * Generates standard date and time information.
     * 
     * @return string
     */
    public function standart() : string
    {
        return $this->returnDatetime("d F Y l, H:i:s");
    }

    /**
     * Is past
     * 
     * @string $date
     * 
     * @return bool
     */
    public function isPast(string $date) : bool
    {
        return $this->compare($date, '<', $this->set('Y/m/d'));
    }

    /**
     * Checks whether the date is the weekend.
     * 
     * 5.7.6[added]
     * 
     * @param string $date
     * 
     * @return bool
     */
    public function isWeekend(?string $date = NULL) : bool
    {
        $weekDayNumber = $this->convert($date ?? $this->default(), '{weekDayNumber}');

        return in_array($weekDayNumber, [6, 7]);
    }

    /**
     * Give it today.
     * 
     * @return string
     */
    public function today(?string $date = NULL, $type = 'dayName') : string
    {
        $type = '{'.$type.'}';

        if( $date === NULL )
        {
            return $this->set($type);
        }
        
        return $this->convert($date, $type);
    }

    /**
     * Give it today day number.
     * 
     * @return string
     */
    public function todayNumber(?string $date = NULL) : string
    {
        return $this->today($date, 'dayNumber');
    }

    /**
     * Get yesterday.
     * 
     * 5.7.6[added]
     * 
     * @param string $date = NULL
     * 
     * @return string
     */
    public function yesterday(?string $date = NULL) : string
    {
        return $this->prev($date, 'day');
    }

    /**
     * Get yesterday.
     * 
     * 5.7.6[added]
     * 
     * @param string $date = NULL
     * 
     * @return string
     */
    public function tomorrow(?string $date = NULL) : string
    {
        return $this->next($date, 'day');
    }

    /**
     * Protected next
     */
    protected function next(?string $date = NULL, $type = 'day', $unit = 'day', $signal = '+') : string
    {
        $calculate = $this->calculate($date ?? $this->default(), $signal . '1' . $unit, 'Y/m/d');

        return $this->convert($calculate, '{'.$type.'}');
    }

    /**
     * Protected prev
     */
    protected function prev(?string $date = NULL, $type = 'day' , $unit = 'day') : string
    {
        return $this->next($date, $type, $unit, '-');
    }

    /**
     * Protected is day for call method
     */
    protected function isDay($method, $date)
    {
        return $this->today($date) === ltrim($method, 'is');
    }

    /**
     * Protected is day for call method
     */
    protected function isMonth($method, $date)
    {
        return $this->convert($date ?? $this->default(), '{month}') === ltrim($method, 'is');
    }
}