namespace Models;

class Validator {

    private $_data = array();
    private $_rules = array();
    private $_errors = array();

    function __construct() {

    }

    public function setData($params) {
        $this->_data = $params;
        return $this;
    }

    public function setRules($field, $type, $param = NULL) {
        $this->_rules[$field][] = array('type' => $type, 'param' => $param);
        return $this;
    }

    public function validate() {
        foreach ($this->_rules as $field => $rules) {
            foreach ($rules as $rule) {
                $this->$rule['type']($field, $rule['param']);
            }
        }
    }

    private function min_len($field, $params) {
        if (mb_strlen($this->_data[$field], 'utf8') > $params) {
            $this->_errors[$field] = 'min_len error';
            return FALSE;
        }
        return TRUE;
    }

    private function max_len($field, $params) {
        if (mb_strlen($this->_data[$field], 'utf8') < $params) {
            $this->_errors[$field] = 'max_len error';
            return FALSE;
        }
        return TRUE;
    }

    private function required($field, $params = NULL) {
        if ($this->_data[$field] == '') {
            $this->_errors[$field] = 'required error';
            return FALSE;
        }
        return TRUE;
    }

    public function getErrors() {
        return $this->_errors;
    }

}