DateTimeTraits.h

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/*
 * MIT License
 *
 * Copyright (c) 2025 nfx
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * SOFTWARE.
 */

 
#pragma once
 
#include "nfx/serialization/json/Serializer.h"
 
//=====================================================================
// TimeSpan support - enabled only if header is available
//=====================================================================
 
#if __has_include( <nfx/datetime/TimeSpan.h>)
 
#    include <nfx/datetime/TimeSpan.h>
 
namespace nfx::serialization::json
{
    template <>
    struct SerializationTraits<nfx::time::TimeSpan>
    {
        static void serialize( const nfx::time::TimeSpan& obj, Builder& builder )
        {
            builder.write( obj.toString() );
        }

        static void fromDocument( const Document& doc, nfx::time::TimeSpan& obj )
        {
            if( doc.is<std::string>( "" ) )
            {
                auto val = doc.get<std::string>( "" );
                if( val.has_value() && !val.value().empty() )
                {
                    if( !nfx::time::TimeSpan::fromString( val.value(), obj ) )
                    {
                        throw std::runtime_error{ "Invalid TimeSpan format: expected ISO 8601 duration string" };
                    }
                }
            }
        }
    };
} // namespace nfx::serialization::json
 
#endif // __has_include(<nfx/datetime/TimeSpan.h>)
 
//=====================================================================
// DateTime support - enabled only if header is available
//=====================================================================
 
#if __has_include( <nfx/datetime/DateTime.h>)
 
#    include <nfx/datetime/DateTime.h>
 
namespace nfx::serialization::json
{
    template <>
    struct SerializationTraits<nfx::time::DateTime>
    {
        static void serialize( const nfx::time::DateTime& obj, Builder& builder )
        {
            builder.write( obj.toString( nfx::time::DateTime::Format::Iso8601Precise ) );
        }

        static void fromDocument( const Document& doc, nfx::time::DateTime& obj )
        {
            if( doc.is<std::string>( "" ) )
            {
                auto val = doc.get<std::string>( "" );
                if( val.has_value() && !val.value().empty() )
                {
                    if( !nfx::time::DateTime::fromString( val.value(), obj ) )
                    {
                        throw std::runtime_error{ "Invalid DateTime format: expected ISO 8601 string" };
                    }
                }
            }
        }
    };
} // namespace nfx::serialization::json
 
#endif // __has_include(<nfx/datetime/DateTime.h>)
 
//=====================================================================
// DateTimeOffset support - enabled only if header is available
//=====================================================================
 
#if __has_include( <nfx/datetime/DateTimeOffset.h>)
 
#    include <nfx/datetime/DateTimeOffset.h>
 
namespace nfx::serialization::json
{
    template <>
    struct SerializationTraits<nfx::time::DateTimeOffset>
    {
        static void serialize( const nfx::time::DateTimeOffset& obj, Builder& builder )
        {
            builder.write( obj.toString( nfx::time::DateTime::Format::Iso8601Precise ) );
        }

        static void fromDocument( const Document& doc, nfx::time::DateTimeOffset& obj )
        {
            if( doc.is<std::string>( "" ) )
            {
                auto val = doc.get<std::string>( "" );
                if( val.has_value() && !val.value().empty() )
                {
                    if( !nfx::time::DateTimeOffset::fromString( val.value(), obj ) )
                    {
                        throw std::runtime_error{ "Invalid DateTimeOffset format: expected ISO 8601 string" };
                    }
                }
            }
        }
    };
} // namespace nfx::serialization::json
 
#endif // __has_include(<nfx/datetime/DateTimeOffset.h>)