ldc-gen-game-web/app/Models/Code.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Support\Facades\Cache;
use Kwaadpepper\Serial\SerialCaster;

/**
 * Code.
 *
 * @property string                     $code_unique   The unique code matching this code id.
 * @property boolean                    $code_exported Is the code exported ?
 * @property \Illuminate\Support\Carbon $date_creation Code creation date.
 *
 * @property-read string|null $code_unique                  The unique code
 * @property-read boolean     $has_been_used_too_many_times Has this code been used too many times ?
 *
 * @method static mixed intToSerial($int) Generate a serial from an int.
 * @method static mixed serialToInt($serial) Get an int from a serial.
 *
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\Models\Participation[] $participations
 * Associated participations.
 */
class Code extends Model
{
    /**
     * Indicates if the IDs are auto-incrementing.
     *
     * @var boolean
     */
    public $incrementing = false;

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

    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'code_exported' => 'bool',
        'date_creation' => 'date',
    ];

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

    // * EVENTS

    /**
     * Perform any actions required after the model boots.
     *
     * @return void
     */
    protected static function booted()
    {
        static::created(fn () => Cache::forget('codes.count'));
        static::updated(fn () => Cache::forget('codes.count'));
        static::deleted(fn () => Cache::forget('codes.count'));
    }

    // * RELATIONS

    /**
     * Has many Participation relation
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function participations(): HasMany
    {
        return $this->hasMany(Participation::class, 'code_unique_id');
    }

    // * METHODS

    /**
     * Generate code_unique attribute
     *
     * @return \Illuminate\Database\Eloquent\Casts\Attribute
     */
    public function codeUnique(): Attribute
    {
        return Attribute::make(
            get: function (): ?string {
                if (!$this->id or $this->id < 1) {
                    return null;
                }
                return self::intToSerial($this->id);
            }
        );
    }

    /**
     * Get the key used for serial int caster
     *
     * @return integer
     */
    public static function serialKeyHash(): int
    {
        return \abs(\crc32(config('app.key')));
    }

    /**
     * Generate a serial from an int.
     *
     * @param integer $int
     * @return string The serial
     * @throws \Kwaadpepper\Serial\Exceptions\SerialCasterException If an error happens du to config.
     */
    public static function intToSerial(int $int): string
    {
        return SerialCaster::encode(
            $int,
            self::serialKeyHash(),
            config('codes.codeLength'),
            config('codes.codeCharList')
        );
    }

    /**
     * Get an int from a serial.
     *
     * @param string $serial
     * @return integer The ID represented
     * @throws \Kwaadpepper\Serial\Exceptions\SerialCasterException If an error happens due to config or
     *  wrong serial is given.
     */
    public static function serialToInt(string $serial): int
    {
        return SerialCaster::decode(
            $serial,
            self::serialKeyHash(),
            config('codes.codeCharList')
        );
    }

    // * GETTERS

    /**
     * Get has_been_used_too_namy_times attribute
     *
     * @return \Illuminate\Database\Eloquent\Casts\Attribute
     */
    public function hasBeenUsedTooManyTimes(): Attribute
    {
        /** @var \App\Models\Settings */
        $settings = app(Settings::class);
        return Attribute::make(
            get: fn (): bool => $settings->nb_unique_code_use ?
                Code::query()->where('id', $this->id)->whereHas(
                    'participations',
                    operator: '>=',
                    count: $settings->nb_unique_code_use
                )->count() : false
        );
    }
}