validatorrule.h

/*
 * Copyright (C) 2017-2018 Matthias Fehring <kontakt@buschmann23.de>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef CUTELYSTVALIDATORRULE_H
#define CUTELYSTVALIDATORRULE_H

#include <Cutelyst/cutelyst_global.h>
#include <Cutelyst/paramsmultimap.h>

#include <QScopedPointer>
#include <QVariant>
#include <QLoggingCategory>

Q_DECLARE_LOGGING_CATEGORY(C_VALIDATOR)

namespace Cutelyst {

class Context;

struct CUTELYST_PLUGIN_UTILS_VALIDATOR_EXPORT ValidatorReturnType {
    QString errorMessage;   
    QVariant value;         
    QVariant extra;         
    explicit operator bool() const {
        return errorMessage.isNull();
    }

    bool isValid() const {
        return errorMessage.isNull();
    }
};

struct CUTELYST_PLUGIN_UTILS_VALIDATOR_EXPORT ValidatorMessages {
    ValidatorMessages() {}
    ValidatorMessages(const char *customLabel, const char *customValidationError = nullptr, const char *customParsingError = nullptr, const char *customValidationDataError = nullptr) :
        label(customLabel),
        validationError(customValidationError),
        parsingError(customParsingError),
        validationDataError(customValidationDataError)
    {}
    const char *label = nullptr; 
    const char *validationError = nullptr;  
    const char *parsingError = nullptr; 
    const char *validationDataError = nullptr;  
};

class ValidatorRulePrivate;

class CUTELYST_PLUGIN_UTILS_VALIDATOR_EXPORT ValidatorRule
{
public:
    ValidatorRule(const QString &field, const ValidatorMessages &messages = ValidatorMessages(), const QString &defValKey = QString());

    virtual ~ValidatorRule();

protected:
    const QScopedPointer<ValidatorRulePrivate> d_ptr;
    ValidatorRule(ValidatorRulePrivate &dd);

    virtual ValidatorReturnType validate(Context *c, const ParamsMultiMap &params) const = 0;

    QString field() const;

    QString label(Context *c) const;

    QString value(const ParamsMultiMap &params) const;

    bool trimBefore() const;

    QString validationError(Context *c, const QVariant &errorData = QVariant()) const;

    virtual QString genericValidationError(Context *c, const QVariant &errorData = QVariant()) const;

    QString parsingError(Context *c, const QVariant &errorData = QVariant()) const;

    virtual QString genericParsingError(Context *c, const QVariant &errorData = QVariant()) const;

    QString validationDataError(Context *c, const QVariant &errorData = QVariant()) const;

    virtual QString genericValidationDataError(Context *c, const QVariant &errorData = QVariant()) const;

    void defaultValue(Context *c, ValidatorReturnType *result, const char *validatorName) const;

private:
    Q_DECLARE_PRIVATE(ValidatorRule)
    Q_DISABLE_COPY(ValidatorRule)

    
    void setTranslationContext(QLatin1String trContext);

    void setTrimBefore(bool trimBefore);

    friend class Validator;
    friend class ValidatorPrivate;
};

}

#endif //CUTELYSTVALIDATORRULE_H