#ifndef _VALIDATOR_H
#define _VALIDATOR_H

#include <string>
#include <memory>

#include "user.h"
#include "token.h"

class validator_ifc
{
public:
    virtual ~validator_ifc() {}
    virtual bool validate (const std::string &user_name,
                           const std::string &token)
    {
        return false;
    }
};

class validator : public validator_ifc
{
private:
    std::shared_ptr<validator_ifc> delegate_;
public:
    validator (const std::shared_ptr<validator_ifc> &delegate) : delegate_
        (delegate) {}
    validator() : validator (std::shared_ptr<validator_ifc>
                                 (new validator_ifc)) {}
    bool validate (const std::string &user_name, const std::string &token)
    {
        return delegate_->validate (user_name, token);
    }
};

validator create_validator (const directory &directory,
                            const user_token_supplier &token_supplier);

#endif