<?php

namespace App\Repositories\Core;

use \Carbon\Carbon;
use \League\Period\Period;

class DateRange
{
    public static function getPeriodsLastMonth($nb)
    {
        $end = static::lastMonth();
        $begin = $end->copy()->subMonth($nb);
        return static::getPeriodsbyMonth($begin, $end);
    }

    public static function getPeriodsLastWeek($nb)
    {
        $end = static::lastWeek();
        $begin = $end->copy()->subWeek($nb);
        return static::getPeriodsbyWeek($begin, $end);
    }

    public static function getPeriodsLastDay($nb)
    {
        $end = static::lastDay();
        $begin = $end->copy()->subDay($nb);
        return static::getPeriodsbyDay($begin, $end);
    }

    public static function byDay()
    {
        return [Carbon::now()->startOfDay(), Carbon::now()->endOfDay()];
    }

    public static function byWeek()
    {
        return [Carbon::now()->startOfWeek(), Carbon::now()->endOfWeek()];
    }

    public static function byMonth()
    {
        return [Carbon::now()->startOfMonth(), Carbon::now()->endOfMonth()];
    }

    public static function byQuarter()
    {
        return [Carbon::now()->startOfQuarter(), Carbon::now()->endOfQuarter()];
    }

    public static function bySemester()
    {
        $quarter = Carbon::now()->quarter;
        switch ($quarter) {
            case 1:
            case 2:
                $date = Carbon::now()->startOfYear();
                break;
            case 3:
                $date = Carbon::now()->startOfQuarter();
                break;
            case 4:
                $date = Carbon::now()->subMonth(3)->startOfQuarter();
                break;
        }
        return [$date, $date->addMonth(6)];
    }

    public static function byYear()
    {
        return [Carbon::now()->startOfYear(), Carbon::now()->endOfYear()];
    }

    public static function lastMonth()
    {
        $start = Carbon::parse('first day of last month');
        $start->addMonth()->startOfDay();
        return $start;
    }

    public static function lastWeek()
    {
        return Carbon::parse('last monday');
    }

    public static function lastDay()
    {
        return Carbon::parse('yesterday');
    }

    public static function getPeriodsbyMonth($begin, $end)
    {
        return (static::getPeriods($begin, $end, 'MONTH'));
    }

    public static function getPeriodsbyWeek($begin, $end)
    {
        return (static::getPeriods($begin, $end, 'WEEK'));
    }

    public static function getPeriodsbyDay($begin, $end)
    {
        return (static::getPeriods($begin, $end, 'DAY'));
    }

    public static function getPeriods($begin, $end, $interval)
    {
        $period = new Period($begin, new \DateTime($end));
        foreach ($period->getDatePeriod("1 $interval") as $day) {
            $daterange[] = Period::createFromDuration($day->format('Y-m-d H:i:s'), "1 $interval");
        }
        return ($daterange);
    }
}