<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use App\User;
use App\ChatMessage;
use DateTime;

class Message extends Model
{
    public function user(){
        return $this->belongsTo(User::class, "user_id");
    }
    public function admin(){
        return $this->belongsTo(User::class, "admin_id");
    }
    
    public function message(){
        return $this->hasMany(User::class, "admin_id");
    }
    public function ChatMessage(){
        return $this->belongsTo(ChatMessage::class);
    }

    public function getAdmin($id){
        $admin = User::find($id);
        return $admin;
    }

    public static function time_elapsed_string($datetime, $full = false) {
        $now = new DateTime;
        $ago = new DateTime($datetime);
        $diff = $now->diff($ago);

        $diff->w = floor($diff->d / 7);
        $diff->d -= $diff->w * 7;

        $string = array(
            'y' => 'año',
            'm' => 'mes',
            'w' => 'semana',
            'd' => 'día',
            'h' => 'hora',
            'i' => 'minuto',
            's' => 'segundo',
        );
        foreach ($string as $k => &$v) {
            if ($diff->$k) {
                $v = $diff->$k . ' ' . $v . ($diff->$k > 1 ? 's' : '');
            } else {
                unset($string[$k]);
            }
        }

        if (!$full) $string = array_slice($string, 0, 1);
        return $string ? implode(', ', $string) . ' atrás' : 'justo ahora';
    }
    
}