<?php

namespace App\Helpers;

use Carbon\Carbon;
use Jenssegers\Date\Date;

class DateHelper
{
    /**
     * Set the locale of the instance for Date frameworks.
     *
     * @param string
     * @return string
     */
    public static function setLocale($locale)
    {
        $locale = $locale ?: config('app.locale');
        Carbon::setLocale($locale);
        Date::setLocale($locale);
    }

    /**
     * Creates a Carbon object.
     *
     * @param string date
     * @param string timezone
     * @return Carbon
     */
    public static function createDateFromFormat($date, $timezone)
    {
        return Carbon::createFromFormat('Y-m-d H:i:s', $date, $timezone);
    }

    /**
     * Return a date according to the timezone of the user, in a short format
     * like "Oct 29, 1981".
     *
     * @param Carbon $date
     * @return string
     */
    public static function getShortDate($date)
    {
        $date = new Date($date);
        $format = trans('format.short_date_year', [], Date::getLocale());

        return $date->format($format);
    }

    /**
     * Return the month of the date according to the timezone of the user
     * like "Oct", or "Dec.
     *
     * @param Carbon $date
     * @return string
     */
    public static function getShortMonth($date)
    {
        $date = new Date($date);
        $format = trans('format.short_month', [], Date::getLocale());

        return $date->format($format);
    }

    /**
     * Return the day of the date according to the timezone of the user
     * like "Mon", or "Wed.
     *
     * @param Carbon $date
     * @return string
     */
    public static function getShortDay($date)
    {
        $date = new Date($date);
        $format = trans('format.short_day', [], Date::getLocale());

        return $date->format($format);
    }

    /**
     * Return a date according to the timezone of the user, in a short format
     * like "Oct 29".
     *
     * @param Carbon $date
     * @return string
     */
    public static function getShortDateWithoutYear($date)
    {
        $date = new Date($date);
        $format = trans('format.short_date', [], Date::getLocale());

        return $date->format($format);
    }

    /**
     * Return a date and the time according to the timezone of the user, in a short format
     * like "Oct 29, 1981 19:32".
     *
     * @param Carbon $date
     * @return string
     */
    public static function getShortDateWithTime($date)
    {
        $date = new Date($date);
        $format = trans('format.short_date_year_time', [], Date::getLocale());

        return $date->format($format);
    }

    /**
     * Add a given number of week/month/year to a date.
     * @param Carbon $date      the start date
     * @param string $frequency week/month/year
     * @param int $number    the number of week/month/year to increment to
     */
    public static function addTimeAccordingToFrequencyType(Carbon $date, $frequency, $number)
    {
        switch ($frequency) {
            case 'week':
                $date->addWeeks($number);
                break;
            case 'month':
                $date->addMonths($number);
                break;
            default:
                $date->addYears($number);
                break;
        }

        return $date;
    }

    /**
     * Get the name of the month and year of a given date with a given number
     * of months more.
     * @param  int    $month
     * @return string
     */
    public static function getMonthAndYear(int $month)
    {
        $date = Date::now()->addMonthsNoOverflow($month);
        $format = trans('format.short_month_year', [], Date::getLocale());

        return $date->format($format);
    }

    /**
     * Gets the next theoritical billing date.
     * This is used on the Upgrade page to tell the user when the next billing
     * date would be if he subscribed.
     *
     * @param  string
     * @return Carbon
     */
    public static function getNextTheoriticalBillingDate(String $interval)
    {
        if ($interval == 'monthly') {
            return Date::now()->addMonth();
        }

        return Date::now()->addYear();
    }

    /**
     * Gets a list of all the months in a year.
     *
     * @return array
     */
    public static function getListOfMonths()
    {
        $months = collect([]);
        $currentDate = Date::parse('2000-01-01');
        $format = trans('format.full_month', [], Date::getLocale());

        for ($month = 1; $month <= 12; $month++) {
            $currentDate->month = $month;
            $months->push([
                'id' => $month,
                'name' => mb_convert_case($currentDate->format($format), MB_CASE_TITLE, 'UTF-8'),
            ]);
        }

        return $months;
    }

    /**
     * Gets a list of all the days in a month.
     *
     * @return array
     */
    public static function getListOfDays()
    {
        $days = collect([]);
        for ($day = 1; $day <= 31; $day++) {
            $days->push(['id' => $day, 'name' => $day]);
        }

        return $days;
    }

    /**
     * Gets a list of all the hours in a day.
     *
     * @return array
     */
    public static function getListOfHours()
    {
        $currentDate = Date::parse('2000-01-01 00:00:00');
        $format = trans('format.full_hour', [], Date::getLocale());

        $hours = collect([]);
        for ($hour = 1; $hour <= 24; $hour++) {
            $currentDate->hour = $hour;
            $hours->push([
                'id' => date('H:i', strtotime("$hour:00")),
                'name' => $currentDate->format($format),
            ]);
        }

        return $hours;
    }

    /**
     * Removes a given number of days of a date given in parameter.
     *
     * @param  Carbon  $date
     * @param  int    $numberOfDaysBefore
     * @return Carbon
     */
    public static function getDateMinusGivenNumberOfDays(Carbon $date, int $numberOfDaysBefore)
    {
        return $date->subDays($numberOfDaysBefore);
    }
}