<?php

namespace Toolbox;

/**
 * Modelo de compatibilidad estilo WordPress: un rango mínimo requerido y uno
 * máximo probado contra el core, más el requisito de PHP. Sólo produce avisos.
 */
final class Compatibility
{
    public const OK = 'ok';
    public const UNTESTED = 'untested';
    public const INSUFFICIENT = 'insufficient';
    public const UNKNOWN = 'unknown';
    public const INDEPENDENT = 'independent';

    /**
     * @return array{status:string, message:string}
     */
    public static function evaluateCore(
        ?string $coreVersion,
        ?string $requires,
        ?string $tested,
        bool $independent = false
    ): array {
        if ($independent) {
            return ['status' => self::INDEPENDENT, 'message' => 'independiente del core'];
        }

        if ($coreVersion === null) {
            return ['status' => self::UNKNOWN, 'message' => 'versión del core desconocida (sin tags)'];
        }

        if ($requires === null && $tested === null) {
            return ['status' => self::UNKNOWN, 'message' => 'sin datos de compatibilidad'];
        }

        if ($requires !== null && !Semver::satisfies($coreVersion, $requires)) {
            return [
                'status'  => self::INSUFFICIENT,
                'message' => "requiere core {$requires} (tienes {$coreVersion})",
            ];
        }

        if ($tested !== null && Semver::compare($coreVersion, $tested) > 0) {
            return [
                'status'  => self::UNTESTED,
                'message' => "probado hasta {$tested} (tienes {$coreVersion})",
            ];
        }

        return ['status' => self::OK, 'message' => 'compatible'];
    }

    /**
     * @return array{status:string, message:string}
     */
    public static function evaluatePhp(?string $requires, string $phpVersion): array
    {
        if ($requires === null) {
            return ['status' => self::UNKNOWN, 'message' => 'sin datos de PHP'];
        }

        if (!Semver::satisfies($phpVersion, $requires)) {
            return [
                'status'  => self::INSUFFICIENT,
                'message' => "requiere PHP {$requires} (tienes {$phpVersion})",
            ];
        }

        return ['status' => self::OK, 'message' => 'compatible'];
    }

    public static function label(string $status): string
    {
        return match ($status) {
            self::OK              => 'OK',
            self::UNTESTED        => 'NO PROBADO',
            self::INSUFFICIENT    => 'INSUFICIENTE',
            self::INDEPENDENT     => 'INDEPENDIENTE',
            default               => 'SIN DATOS',
        };
    }
}