<?php

namespace App\KommaApp\Events\Models;

use App\KommaApp\Competences\Models\Competence;
use App\KommaApp\DisplayNameTrait;
use App\KommaApp\Documents\Kms\DocumentableInterface;
use App\KommaApp\Documents\Models\Document;
use App\KommaApp\Images\Models\Image;
use App\KommaApp\Kms\Core\AbstractTranslatableModel;
use App\KommaApp\Users\Models\User;
use Carbon\Carbon;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\MorphMany;


/**
 * App\KommaApp\Events\Models\Event
 *
 * @property int $id
 * @property int $active
 * @property string $date
 * @property \Illuminate\Support\Carbon|null $created_at
 * @property \Illuminate\Support\Carbon|null $updated_at
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\KommaApp\Competences\Models\Competence[] $competences
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\KommaApp\Documents\Models\Document[] $documents
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\KommaApp\Images\Models\Image[] $images
 * @property-read \App\KommaApp\Events\Models\EventTranslation $translation
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\KommaApp\Events\Models\EventTranslation[] $translations
 * @method static \Illuminate\Database\Eloquent\Builder|\App\KommaApp\Events\Models\Event whereActive($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\KommaApp\Events\Models\Event whereCreatedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\KommaApp\Events\Models\Event whereDate($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\KommaApp\Events\Models\Event whereId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\KommaApp\Events\Models\Event whereUpdatedAt($value)
 * @mixin \Eloquent
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\KommaApp\Users\Models\User[] $users
 */
class Event extends AbstractTranslatableModel implements DocumentableInterface {
    protected $kmsClass = Event::class;

    public const FilterAll = 'all';
    public const FilterRecommended = 'recommended';
    public const FilterSubscribed = 'subscribed';
    public const FilterCompleted = 'completed';

    public const UserStatusSubscribed = 1;
    public const UserStatusPresent = 2;


    /*
    * Transient properties on Eloquent models
    * These are not saved to database.
    */
    public $thumbnail = false;


    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'events';

    protected $fillable = ['active', 'date', 'max_subscription_date', 'starttime', 'endtime'];


    /**
     * Get the images from the current Event
     *
     * @return \Illuminate\Database\Eloquent\Relations\hasMany
     */
    public function images()
    {
        /**
         * On the Image model is an MorphTo relation
         * By using a hasMany relation:
         * where the imageable_type is filled in with the KmsClass
         * And the imageable_id is set as the foreign_id,
         * we can collect the images of the given model directly.
         *
         */
        return $this->hasMany(Image::class, 'imageable_id')
            ->where('imageable_type', '=', $this->kmsClass);
    }

    public function __get($key)
    {
        if($key == 'title' && $this->exists) {
            return $this->translations->first()->name .'<br/><sub>'.\Carbon\Carbon::parse($this->date)->format('d-m-Y').'</sub>';
        }

        return parent::__get($key); // TODO: Change the autogenerated stub
    }

    /**
     * Gets the translation models for this model
     *
     * @return HasMany that resolves to AbstractTranslationModel instances
     */
    public function translations(): HasMany
    {
        return $this->hasMany(EventTranslation::class);
    }


    public function documents(): MorphMany
    {
        return $this->MorphMany(Document::class, 'documentable');
    }

    public function users(): BelongsToMany
    {
        return $this->belongsToMany(User::class);
    }

    public function hasSubscriptionDate()
    {
        return $this->attributes['max_subscription_date'] !== null;
    }

    /**
     * Returns true if no users may subscribe anymore for the event, since all "seats" are occupied
     *
     * @return bool
     */
    public function maxSubscriptionDateReached(): bool
    {
        return $this->hasSubscriptionDate() ?  Carbon::now()->greaterThan(Carbon::parse($this->attributes['max_subscription_date'])->addDay()): false;
    }

    /**
     * Gets the text that displays the maximum amount of subscriptions and current amount of subscriptions.
     * Example for a situation in which 4 of the max 10 users subscribed: 4 / 10
     */
    public function getSubscriptionCounterText(): string
    {
        return $this->users()->count().' / '.(!empty($this->attributes['max_subscriptions']) ? $this->attributes['max_subscriptions'] : __('kms/events.unlimited'));
    }
}