<?php

namespace IQBall\Core\Data;

use InvalidArgumentException;

/**
 * Enumeration class workaround
 * As there is no enumerations in php 7.4, this class
 * encapsulates an integer value and use it as a variant discriminant
 */
final class MemberRole {
    private const ROLE_PLAYER = 0;
    private const ROLE_COACH = 1;
    private const MIN = self::ROLE_PLAYER;
    private const MAX = self::ROLE_COACH;

    private int $value;

    private function __construct(int $val) {
        if (!$this->isValid($val)) {
            throw new InvalidArgumentException("Valeur du rôle invalide");
        }
        $this->value = $val;
    }

    public static function player(): MemberRole {
        return new MemberRole(MemberRole::ROLE_PLAYER);
    }

    public static function coach(): MemberRole {
        return new MemberRole(MemberRole::ROLE_COACH);
    }

    public function name(): string {
        switch ($this->value) {
            case self::ROLE_COACH:
                return "COACH";
            case self::ROLE_PLAYER:
                return "PLAYER";
        }
        die("unreachable");
    }

    public static function fromName(string $name): ?MemberRole {
        switch ($name) {
            case "COACH":
                return MemberRole::coach();
            case "PLAYER":
                return MemberRole::player();
            default:
                return null;
        }
    }

    private function isValid(int $val): bool {
        return ($val <= self::MAX and $val >= self::MIN);
    }

    public function isPlayer(): bool {
        return ($this->value == self::ROLE_PLAYER);
    }

    public function isCoach(): bool {
        return ($this->value == self::ROLE_COACH);
    }

}