/*
 * Copyright 2010-2022 Haiku Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _B_HTTP_TIME_H_
#define _B_HTTP_TIME_H_

#include <ctime>

#include <DateTime.h>
#include <ErrorsExt.h>
#include <String.h>

namespace BPrivate {

namespace Network {

enum class BHttpTimeFormat : int8 { RFC1123 = 0, RFC850, AscTime };


class BHttpTime
{
public:
        // Error type
        class InvalidInput;

        // Constructors
                                                                BHttpTime() noexcept;
                                                                BHttpTime(BDateTime date);
                                                                BHttpTime(const BString& dateString);

        // Date modification
                        void                            SetTo(const BString& string);
                        void                            SetTo(BDateTime date);


        // Date Access
                        BDateTime                       DateTime() const noexcept;
                        BHttpTimeFormat         DateTimeFormat() const noexcept;
                        BString                         ToString(BHttpTimeFormat outputFormat
                                                                        = BHttpTimeFormat::RFC1123) const;

private:
                        void                            _Parse(const BString& dateString);

                        BDateTime                       fDate;
                        BHttpTimeFormat         fDateFormat;
};


class BHttpTime::InvalidInput : public BError
{
public:
                                                                InvalidInput(const char* origin, BString input);

        virtual const char*                     Message() const noexcept override;
        virtual BString                         DebugMessage() const override;

                        BString                         input;
};


// Convenience functions
BDateTime parse_http_time(const BString& string);
BString format_http_time(BDateTime timestamp,
        BHttpTimeFormat outputFormat = BHttpTimeFormat::RFC1123);


} // namespace Network

} // namespace BPrivate

#endif // _B_HTTP_TIME_H_