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// Copyright (C) 2025 David M. Cotter
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "httpresponse.h"
#include <QDebug>
#include <QTextStream>
namespace Mcp {
namespace Internal {
HttpResponse::HttpResponse(QObject *parent)
: QObject(parent)
{}
QByteArray HttpResponse::createJsonResponse(const QByteArray &jsonBody, StatusCode statusCode)
{
ResponseData response;
response.statusCode = statusCode;
response.statusMessage = getStatusMessage(statusCode);
response.version = "1.1";
response.body = jsonBody;
// Set standard headers for JSON response
response.headers["Content-Type"] = "application/json; charset=utf-8";
response.headers["Content-Length"] = QString::number(jsonBody.size());
response.headers["Server"] = "Qt MCP Plugin HTTP Server";
response.headers["Connection"] = "close";
return buildResponse(response);
}
QByteArray HttpResponse::createTextResponse(const QString &textBody, StatusCode statusCode)
{
ResponseData response;
response.statusCode = statusCode;
response.statusMessage = getStatusMessage(statusCode);
response.version = "1.1";
response.body = textBody.toUtf8();
// Set standard headers for text response
response.headers["Content-Type"] = "text/plain; charset=utf-8";
response.headers["Content-Length"] = QString::number(response.body.size());
response.headers["Server"] = "Qt MCP Plugin HTTP Server";
response.headers["Connection"] = "close";
return buildResponse(response);
}
QByteArray HttpResponse::createErrorResponse(StatusCode statusCode, const QString &errorMessage)
{
// Create JSON error response
QString jsonError = QString(R"({"error":{"code":%1,"message":"%2"}})")
.arg(static_cast<int>(statusCode))
.arg(errorMessage);
ResponseData response;
response.statusCode = statusCode;
response.statusMessage = getStatusMessage(statusCode);
response.version = "1.1";
response.body = jsonError.toUtf8();
// Set standard headers for error response
response.headers["Content-Type"] = "application/json; charset=utf-8";
response.headers["Content-Length"] = QString::number(response.body.size());
response.headers["Server"] = "Qt MCP Plugin HTTP Server";
response.headers["Connection"] = "close";
return buildResponse(response);
}
QByteArray HttpResponse::createCorsResponse(const QByteArray &jsonBody, StatusCode statusCode)
{
ResponseData response;
response.statusCode = statusCode;
response.statusMessage = getStatusMessage(statusCode);
response.version = "1.1";
response.body = jsonBody;
// Set standard headers for JSON response
response.headers["Content-Type"] = "application/json; charset=utf-8";
response.headers["Content-Length"] = QString::number(jsonBody.size());
response.headers["Server"] = "Qt MCP Plugin HTTP Server";
response.headers["Connection"] = "close";
// Add CORS headers
response.headers["Access-Control-Allow-Origin"] = "*";
response.headers["Access-Control-Allow-Methods"] = "GET, POST, OPTIONS";
response.headers["Access-Control-Allow-Headers"] = "Content-Type, Authorization";
response.headers["Access-Control-Max-Age"] = "3600";
return buildResponse(response);
}
QByteArray HttpResponse::buildResponse(const ResponseData &response)
{
QString httpResponse;
QTextStream stream(&httpResponse);
// Status line: HTTP/1.1 200 OK
stream << formatStatusLine(response.version, response.statusCode, response.statusMessage)
<< "\r\n";
// Headers
stream << formatHeaders(response.headers) << "\r\n";
// Body
if (!response.body.isEmpty()) {
stream << response.body;
}
return httpResponse.toUtf8();
}
QString HttpResponse::getStatusMessage(StatusCode statusCode)
{
switch (statusCode) {
case OK:
return "OK";
case CREATED:
return "Created";
case NO_CONTENT:
return "No Content";
case BAD_REQUEST:
return "Bad Request";
case UNAUTHORIZED:
return "Unauthorized";
case FORBIDDEN:
return "Forbidden";
case NOT_FOUND:
return "Not Found";
case METHOD_NOT_ALLOWED:
return "Method Not Allowed";
case INTERNAL_SERVER_ERROR:
return "Internal Server Error";
case NOT_IMPLEMENTED:
return "Not Implemented";
case BAD_GATEWAY:
return "Bad Gateway";
case SERVICE_UNAVAILABLE:
return "Service Unavailable";
default:
return "Unknown Status";
}
}
QString HttpResponse::formatStatusLine(
const QString &version, StatusCode statusCode, const QString &statusMessage)
{
return QString("HTTP/%1 %2 %3").arg(version).arg(static_cast<int>(statusCode)).arg(statusMessage);
}
QString HttpResponse::formatHeaders(const QMap<QString, QString> &headers)
{
QString headerString;
QTextStream stream(&headerString);
for (auto it = headers.begin(); it != headers.end(); ++it) {
stream << it.key() << ": " << it.value() << "\r\n";
}
return headerString;
}
} // namespace Internal
} // namespace Mcp
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