<?php

namespace App\Models\OpBrCharcut;

use Illuminate\Database\Eloquent\Model;
use Kwaadpepper\Serial\SerialCaster;
use App\Models\Customers;
use Illuminate\Support\Facades\Log;
use Kwaadpepper\Serial\Exceptions\SerialCasterException;

class Code extends Model
{
    protected $table = 'opbrcharcut_codes';

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'code_used', 'code_exported',
        'date_creation'
    ];

    /**
     * Indicates if the model should be timestamped.
     *
     * @var boolean
     */
    public $timestamps = false;

    // * RELATIONS
    public function customer()
    {
        return $this->belongsTo(Customers::class);
    }

    // * FUNCTIONS
    /**
     * Generate code_unique attribute
     *
     * @return string|null
     */
    public function getCodeUniqueAttribute()
    {
        if (!$this->id or !\is_integer($this->id) or $this->id < 1) {
            return null;
        }
        return self::intToSerial($this->id);
    }

    /**
     * Generate a serial from an int.
     *
     * @param integer $int
     * @return string The serial
     * @throws SerialCasterException If an error happens du to config.
     */
    public static function intToSerial(int $int): string
    {
        return SerialCaster::encode(
            $int,
            \abs(\crc32(config('app.key'))),
            config('opbrcharcut.codeLength'),
            config('opbrcharcut.codeCharList')
        );
    }

    /**
     * Generate a serial from an int.
     *
     * @param string $serial
     * @return integer The ID represented
     * @throws SerialCasterException If an error happens due to config or wrong serial is given.
     */
    public static function serialToInt(string $serial): int
    {
        try {
            return SerialCaster::decode(
                $serial,
                \abs(\crc32(config('app.key'))),
                config('opbrcharcut.codeCharList')
            );
        } catch (SerialCasterException $e) {
            Log::error($e->getMessage() . " code utilisé : " . $serial);
            // return 0 invalid value for code
            return 0;
        }
    }
}