<?php
/**
 * Created by PhpStorm.
 * User: Marco Glietsch
 * Date: 14.05.2018
 * Time: 16:20
 */

namespace App\Helpers;

use App\Models\Publication;
use \Carbon\Carbon;

class DateHelper
{
    static function toCal($timestamp, $addHours = 0)
    {
        $timestamp					= strtotime($timestamp);
        // Sommerzeit berücksichtigen
        if(date("I", $timestamp))
        {
            $timestamp				= $timestamp - 1 * 3600;
        }
        
        // Zeittone berücksichtigen GMT +1
        $timestamp					= $timestamp - 1 * 3600;
        
        $timestamp					= Carbon::createFromTimestamp($timestamp);
        if($addHours > 0)
        {
            $timestamp->addHours($addHours);
        }
        
        return $timestamp->format('Ymd\THis\Z');
    }
    
    static function toHumanDate($timestamp)
    {
        $timestamp					= Carbon::createFromFormat(config('formats.datetime.database'), $timestamp);
        
        return $timestamp->format('d.m.Y');
    }
    
    static function toHumanTime($timestamp)
    {
        $timestamp					= Carbon::createFromFormat(config('formats.datetime.database'), $timestamp);
        
        return $timestamp->format('H:i');
    }
    
    static function toHumanDateTime($timestamp)
    {
        $timestamp					= Carbon::createFromFormat(config('formats.datetime.database'), $timestamp);
        
        return $timestamp->format('d.m.Y H:i:s');
    }
    
    static function daysToPublicationString($date)
    {
        $days					= DateHelper::diffInDaysToNow($date);
        
        if($days < 0)
        {
            return __("general.immediately");
        }
        else if($days == 0)
        {
            return __("general.today");
        }
        else if($days == 1)
        {
            return __("general.tomorrow");
        }
        else
        {
            return __("general.in :days days on :date", [
                'days'				=> $days,
                'date'				=> DateHelper::toHumanDate($date)]
                );
        }
    }
    
    static function daysSincePublicationString($date)
    {
        $days						= DateHelper::diffInDaysToNow($date);
        
        if($days < -1)
        {	$days					*= -1;
        return "vor $days Tagen, am ".DateHelper::toHumanDate($date);
        }
        else if($days == -1)
        {
            return __("general.yesterday");
        }
        else if($days == 0)
        {
            return __("general.today");
        }
        else
        {
            return ___("admin.not published yet");
        }
    }
    
    static function diffInDaysString($date)
    {
        if(empty($date))
        {
            return "nie";
        }
        $days					= DateHelper::diffInDaysToNow($date);
        
        if($days < -1)
        {
            return "vor ".(-1 * $days)." Tagen, am ".DateHelper::toHumanDate($date);
        }
        else if($days == -1)
        {
            return __("general.yesterday");
        }
        else if($days == 0)
        {
            return __("general.today");
        }
        else if($days == 1)
        {
            return __("general.tomorrow");
        }
        else
        {
            return __("general.in :days days on :date", [
                'days'				=> $days,
                'date'				=> DateHelper::toHumanDate($date)]
                );
        }
    }
    
    static function diffInDaysAndTimeString($date)
    {
        if(empty($date))
        {
            return "nie";
        }
        $days = DateHelper::diffInDaysToNow($date);
        
        $daystring = "";
        $timestring = __("general.at :time", [
            'time'						=> DateHelper::toHumanTime($date)
        ]);
        
        if($days < -1)
        {
            $daystring	= __("general.:days days ago on :date", [
                'days'					=> (-1 * $days),
                'date'					=> DateHelper::toHumanDate($date)
            ]);
        }
        else if($days == -1)
        {
            $daystring	= __("general.yesterday");
        }
        else if($days == 0)
        {
            $daystring	= __("general.today");
        }
        else if($days == 1)
        {
            $daystring	= __("general.tomorrow");
        }
        else
        {
            $daystring	= __("general.in :days days on :date", [
                'days'				=> $days,
                'date'				=> DateHelper::toHumanDate($date)]
                );
        }
        
        return $daystring." ".$timestring;
    }
    
    static public function diffInDaysToNow($date)
    {
        $now						= Carbon::now()->endOfDay();
        $days						= $now->diffInDays($date);
        if($now > $date)
        {
            $days					*= -1;
        }
        else
        {
            $days++;
        }
        
        return $days;
    }
}