<?php

namespace bff\modules\banners\models;

use Geo;
use Banners;
use bff\db\illuminate\Model;
use bff\db\illuminate\casts\Separated;

/**
 * Banners: banner model
 * @copyright Tamaranga
 */
class Banner extends Model
{
    protected $table = Banners::TABLE_BANNERS;

    protected $casts = [
        'type_data' => 'json',
        'devices' => Separated::class,
        'pages' => Separated::class,
        'locale' => Separated::class,
    ];

    public const UPDATED_AT = null;

    public static function boot()
    {
        parent::boot();

        static::creating(function ($model) {
            $model->num = (int)$model->max('num') + 1;
        });

        static::deleting(function ($model) {
            $model->regions()->delete();
            $model->stat()->delete();
        });
    }

    /**
     * Banner position
     * @return \Illuminate\Database\Eloquent\Relations\hasOne
     */
    public function position()
    {
        return $this->hasOne($this->modelClass('Position', 'Banners'), 'id', 'pos');
    }

    /**
     * Banner regions
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function regions()
    {
        return $this->hasMany($this->modelClass('BannerRegions', 'Banners'), 'banner_id', 'id')
            ->with(['region' => function ($q) {
                $q->select(['id','title']);
            }]);
    }

    /**
     * Update regions
     * @param array $regions
     */
    public function setRegionsAttribute($regions)
    {
        static::saved(function ($self) use ($regions) {
            /** @var $self self */
            $before = $self->regions()->without('region')->get()->keyBy('region_id');
            foreach ($regions as $id) {
                if ($id && $before->get($id)) {
                    $before->forget($id);
                } else {
                    $region = Geo::regionParents($id);
                    if (! empty($region['db']['geo_region1'])) {
                        $region['db']['region_id'] = $id;
                        $self->regions()->create($region['db']);
                    }
                }
            }
            foreach ($before as $deleted) {
                $deleted->delete();
            }
        });
    }

    /**
     * Banner statistic
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function stat()
    {
        return $this->hasMany($this->modelClass('BannerStat', 'Banners'), 'banner_id', 'id');
    }

    /**
     * Statistic increment
     * @param string $field
     * @param string|null $date
     */
    protected function statIncrement($field, $date = null)
    {
        if ($this->exists) {
            if (is_null($date)) {
                $date = date('Y-m-d');
            }
            if (! $this->stat()->where('period', $date)->increment($field, 1)) {
                $this->stat()->create(['period' => $date, $field => 1]);
            }
        }
    }

    /**
     * Increment banner shows
     * @param string|null $date
     */
    public function showed($date = null)
    {
        $this->statIncrement('shows', $date);
    }

    /**
     * Increment banner clicks
     * @param string|bool|null $date
     */
    public function clicked($date = null)
    {
        $this->statIncrement('clicks', $date);
    }
}