<?php

namespace App\Models;

use App\Enums\ContactFormType;
use Illuminate\Database\Eloquent\Model;

class Contact extends Model
{

    protected $primaryKey = 'date';

    public $timestamps = false;

    protected static function booted()
    {
        static::creating(function ($contact) {
            $contact->date = date('Y-m-d');
            return $contact;
        });
        static::updating(function ($contact) {
            $contact->all++; // increment general counter
            return $contact;
        });
    }

    /**
     * Increments the ContactFormType stats of today
     *
     * @param ContactFormType $type
     * @return void
     */
    public static function incrementStat(ContactFormType $type)
    {
        $contact = static::where('date', '=', date('Y-m-d'))->firstOrNew();
        // Can't do $contact->counter[$type->value]++ => ErrorException
        $d = $contact->values;
        $d[$type->value]++;
        $contact->values = $d;
        $contact->save();
    }

    public function getValuesAttribute($value): array
    {
        return $this->unserialize($value ?? serialize($this->counterSkeleton()));
    }

    public function setValuesAttribute(array $value): string
    {
        $this->attributes['values'] = $this->serialize($value);
        return $this->attributes['values'];
    }

    private function serialize(array $value)
    {
        return serialize($this->merge($this->counterSkeleton(), $value));
    }

    private function unserialize(string $value)
    {
        return $this->merge($this->counterSkeleton(), unserialize($value));
    }

    private function merge(array $a, array $b): array
    {
        foreach ($a as $i => $v) {
            if (isset($b[$i])) {
                $a[$i] = $b[$i];
            }
        }
        return $a;
    }

    private function counterSkeleton(): array
    {
        return collect(ContactFormType::toArray())->mapWithKeys(function ($enum) {
            if ($enum->equals(ContactFormType::none())) {
                return [];
            }
            return [$enum->value => 0];
        })->toArray();
    }
}