Add validation on Request.

src/Libs/Validator.php

@@ -0,0 +1,159 @@
+<?php
+namespace Libs;
+
+class Validator {
+    public static string $lastFailed = '';
+
+    /**
+     * Validar lista de reglas sobre las propiedades de un objeto.
+     *
+     * @param array  $rulesList Lista de reglas.
+     * @param Neuron $haystack  Objeto al que se le verificarán las reglas.
+     *
+     * @return bool  Retorna true solo si todas las reglas se cumplen y false en cuanto una falle.
+     */
+    public static function validateList(array $rulesList, Neuron $haystack): bool
+    {
+        foreach ($rulesList as $target => $rules) {
+            $rules = preg_split('/\|/', $rules);
+            foreach ($rules as $rule) {
+                if (static::checkRule($haystack->{$target}, $rule))
+                    continue;
+                static::$lastFailed = $target.'.'.$rule;
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Revisa si una regla se cumple.
+     *
+     * @param mixed  $subject Lo que se va a verfificar.
+     * @param string $rule    La regla a probar.
+     *
+     * @return bool
+     */
+    public static function checkRule(mixed $subject, string $rule): bool
+    {
+        $arguments    = preg_split('/[:,]/', $rule);
+        $rule         = [static::class, $arguments[0]];
+        $arguments[0] = $subject;
+
+        if (is_callable($rule))
+            return call_user_func_array($rule, $arguments);
+
+        throw new \Exception('Bad rule: "'.preg_split('/::/', $rule)[1].'"' );
+    }
+
+    /**
+     * Verifica la regla de manera negativa.
+     *
+     * @param mixed $subject Lo que se va a verfificar.
+     * @param mixed $rule    La regla a probar.
+     *
+     * @return bool
+     */
+    public static function not(mixed $subject, ...$rule): bool
+    {
+        return !static::checkRule($subject, join(':', $rule));
+    }
+
+    /**
+     * required
+     *
+     * @param mixed $subject
+     *
+     * @return bool
+     */
+    public static function required(mixed $subject): bool
+    {
+        return isset($subject);
+    }
+
+    /**
+     * number
+     *
+     * @param mixed $subject
+     *
+     * @return bool
+     */
+    public static function number(mixed $subject): bool
+    {
+        return is_numeric($subject);
+    }
+
+    /**
+     * int
+     *
+     * @param mixed $subject
+     *
+     * @return bool
+     */
+    public static function int(mixed $subject): bool
+    {
+        return filter_var($subject, FILTER_VALIDATE_INT);
+    }
+
+    /**
+     * float
+     *
+     * @param mixed $subject
+     *
+     * @return bool
+     */
+    public static function float(mixed $subject): bool
+    {
+        return filter_var($subject, FILTER_VALIDATE_FLOAT);
+    }
+
+    /**
+     * bool
+     *
+     * @param mixed $subject
+     *
+     * @return bool
+     */
+    public static function bool(mixed $subject): bool
+    {
+        return filter_var($subject, FILTER_VALIDATE_BOOLEAN);
+    }
+
+    /**
+     * email
+     *
+     * @param mixed $subject
+     *
+     * @return bool
+     */
+    public static function email(mixed $subject): bool
+    {
+        return filter_var($subject, FILTER_VALIDATE_EMAIL);
+    }
+
+    /**
+     * url
+     *
+     * @param mixed $subject
+     *
+     * @return bool
+     */
+    public static function url(mixed $subject): bool
+    {
+        filter_var($subject, FILTER_VALIDATE_URL);
+    }
+
+    /**
+     * enum
+     *
+     * @param mixed $subject
+     * @param mixed $values
+     *
+     * @return bool
+     */
+    public static function enum(mixed $subject, ...$values): bool
+    {
+        return in_array($subject, $values);
+    }
+}