HeaderFactory.h

/*
 * Copyright (C) 2025, Robert Patterson
 *
 * 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
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#pragma once
 
#include <memory>
#include <stdexcept>
 
#include "musx/factory/FactoryBase.h"
#include "musx/dom/Header.h"
#include "musx/xml/XmlInterface.h"
 
namespace musx {
namespace factory {
 
class HeaderFactory : public FactoryBase
{
public:
    static musx::dom::header::HeaderPtr create(const XmlElementPtr& element)
    {
        auto headerDataElement = getFirstChildElement(element, "headerData");
        if (!headerDataElement) {
            throw std::invalid_argument("Missing <headerData> element.");
        }
 
        auto header = std::make_shared<dom::header::Header>();
        getFieldFromXml(headerDataElement, "wordOrder", header->wordOrder, parseWordOrder);
        getFieldFromXml(headerDataElement, "textEncoding", header->textEncoding, parseTextEncoding);
        getFieldFromXml(headerDataElement, "created", header->created, parseFileInfo);
        getFieldFromXml(headerDataElement, "modified", header->modified, parseFileInfo);
 
        return header;
    }
 
private:
    static musx::dom::header::WordOrder parseWordOrder(const XmlElementPtr& element)
    {
        std::string value = element->getText();
        if (value == "lo-endian") return musx::dom::header::WordOrder::LittleEndian;
        if (value == "hi-endian") return musx::dom::header::WordOrder::BigEndian;
        throw std::invalid_argument("Invalid word order value: " + value);
    }
 
    static musx::dom::header::TextEncoding parseTextEncoding(const XmlElementPtr& element)
    {
        std::string value = element->getText();
        if (value == "Mac") return musx::dom::header::TextEncoding::Mac;
        if (value == "Windows") return musx::dom::header::TextEncoding::Windows;
        return musx::dom::header::TextEncoding::Other;
    }
 
    static musx::dom::header::Platform parsePlatform(const XmlElementPtr& element)
    {
        std::string value = element->getText();
        if (value == "MAC") return musx::dom::header::Platform::Mac;
        if (value == "WIN") return musx::dom::header::Platform::Windows;
        return musx::dom::header::Platform::Other;
    }
 
    static musx::dom::header::FileInfo parseFileInfo(const XmlElementPtr& element)
    {
        musx::dom::header::FileInfo fileInfo;
        getFieldFromXml(element, "year", fileInfo.year, [](auto element) { return element->template getTextAs<int>(); });
        getFieldFromXml(element, "month", fileInfo.month, [](auto element) { return element->template getTextAs<int>(); });
        getFieldFromXml(element, "day", fileInfo.day, [](auto element) { return element->template getTextAs<int>(); });
        getFieldFromXml(element, "modifiedBy", fileInfo.modifiedBy, [](auto element) { return element->getText(); });
        getFieldFromXml(element, "enigmaVersion", fileInfo.finaleVersion, parseFinaleVersion);
        getFieldFromXml(element, "application", fileInfo.application, [](auto element) { return element->getText(); });
        getFieldFromXml(element, "platform", fileInfo.platform, parsePlatform);
        getFieldFromXml(element, "appVersion", fileInfo.appVersion, parseFinaleVersion);
        getFieldFromXml(element, "fileVersion", fileInfo.fileVersion, parseFinaleVersion);
        getFieldFromXml(element, "appRegion", fileInfo.appRegion, [](auto element) { return element->getText(); });
 
        return fileInfo;
    }
 
    static musx::dom::header::FinaleVersion parseFinaleVersion(const XmlElementPtr& element) {
        if (!element) {
            throw std::runtime_error("Missing version element.");
        }
 
        musx::dom::header::FinaleVersion version;
        getFieldFromXml(element, "major", version.major, [](auto element) { return element->template getTextAs<int>(); });
        getFieldFromXml(element, "minor", version.minor, [](auto element) { return element->template getTextAs<int>(); });
        version.maint = getOptionalChildTextAs<int>(element, "maint");
        getFieldFromXml(element, "devStatus", version.devStatus, [](auto element) { return element->getText(); });
        version.build = getOptionalChildTextAs<int>(element, "build");
 
        return version;
    }
};
 
} // namespace factory
} // namespace musx