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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#include "AsyncJson.h"
#if ASYNC_JSON_SUPPORT == 1
#if ARDUINOJSON_VERSION_MAJOR == 5
AsyncJsonResponse::AsyncJsonResponse(bool isArray) : _isValid{false} {
_code = 200;
_contentType = asyncsrv::T_application_json;
if (isArray) {
_root = _jsonBuffer.createArray();
} else {
_root = _jsonBuffer.createObject();
}
}
#elif ARDUINOJSON_VERSION_MAJOR == 6
AsyncJsonResponse::AsyncJsonResponse(bool isArray, size_t maxJsonBufferSize) : _jsonBuffer(maxJsonBufferSize), _isValid{false} {
_code = 200;
_contentType = asyncsrv::T_application_json;
if (isArray) {
_root = _jsonBuffer.createNestedArray();
} else {
_root = _jsonBuffer.createNestedObject();
}
}
#else
AsyncJsonResponse::AsyncJsonResponse(bool isArray) : _isValid{false} {
_code = 200;
_contentType = asyncsrv::T_application_json;
if (isArray) {
_root = _jsonBuffer.add<JsonArray>();
} else {
_root = _jsonBuffer.add<JsonObject>();
}
}
#endif
size_t AsyncJsonResponse::setLength() {
#if ARDUINOJSON_VERSION_MAJOR == 5
_contentLength = _root.measureLength();
#else
_contentLength = measureJson(_root);
#endif
if (_contentLength) {
_isValid = true;
}
return _contentLength;
}
size_t AsyncJsonResponse::_fillBuffer(uint8_t *data, size_t len) {
ChunkPrint dest(data, _sentLength, len);
#if ARDUINOJSON_VERSION_MAJOR == 5
_root.printTo(dest);
#else
serializeJson(_root, dest);
#endif
return len;
}
#if ARDUINOJSON_VERSION_MAJOR == 6
PrettyAsyncJsonResponse::PrettyAsyncJsonResponse(bool isArray, size_t maxJsonBufferSize) : AsyncJsonResponse{isArray, maxJsonBufferSize} {}
#else
PrettyAsyncJsonResponse::PrettyAsyncJsonResponse(bool isArray) : AsyncJsonResponse{isArray} {}
#endif
size_t PrettyAsyncJsonResponse::setLength() {
#if ARDUINOJSON_VERSION_MAJOR == 5
_contentLength = _root.measurePrettyLength();
#else
_contentLength = measureJsonPretty(_root);
#endif
if (_contentLength) {
_isValid = true;
}
return _contentLength;
}
size_t PrettyAsyncJsonResponse::_fillBuffer(uint8_t *data, size_t len) {
ChunkPrint dest(data, _sentLength, len);
#if ARDUINOJSON_VERSION_MAJOR == 5
_root.prettyPrintTo(dest);
#else
serializeJsonPretty(_root, dest);
#endif
return len;
}
#if ARDUINOJSON_VERSION_MAJOR == 6
AsyncCallbackJsonWebHandler::AsyncCallbackJsonWebHandler(const String &uri, ArJsonRequestHandlerFunction onRequest, size_t maxJsonBufferSize)
: _uri(uri), _method(HTTP_GET | HTTP_POST | HTTP_PUT | HTTP_PATCH), _onRequest(onRequest), maxJsonBufferSize(maxJsonBufferSize), _maxContentLength(16384) {}
#else
AsyncCallbackJsonWebHandler::AsyncCallbackJsonWebHandler(const String &uri, ArJsonRequestHandlerFunction onRequest)
: _uri(uri), _method(HTTP_GET | HTTP_POST | HTTP_PUT | HTTP_PATCH), _onRequest(onRequest), _maxContentLength(16384) {}
#endif
bool AsyncCallbackJsonWebHandler::canHandle(AsyncWebServerRequest *request) const {
if (!_onRequest || !request->isHTTP() || !(_method & request->method())) {
return false;
}
if (_uri.length() && (_uri != request->url() && !request->url().startsWith(_uri + "/"))) {
return false;
}
if (request->method() != HTTP_GET && !request->contentType().equalsIgnoreCase(asyncsrv::T_application_json)) {
return false;
}
return true;
}
void AsyncCallbackJsonWebHandler::handleRequest(AsyncWebServerRequest *request) {
if (_onRequest) {
if (request->method() == HTTP_GET) {
JsonVariant json;
_onRequest(request, json);
return;
} else if (request->_tempObject != NULL) {
#if ARDUINOJSON_VERSION_MAJOR == 5
DynamicJsonBuffer jsonBuffer;
JsonVariant json = jsonBuffer.parse((uint8_t *)(request->_tempObject));
if (json.success()) {
#elif ARDUINOJSON_VERSION_MAJOR == 6
DynamicJsonDocument jsonBuffer(this->maxJsonBufferSize);
DeserializationError error = deserializeJson(jsonBuffer, (uint8_t *)(request->_tempObject));
if (!error) {
JsonVariant json = jsonBuffer.as<JsonVariant>();
#else
JsonDocument jsonBuffer;
DeserializationError error = deserializeJson(jsonBuffer, (uint8_t *)(request->_tempObject));
if (!error) {
JsonVariant json = jsonBuffer.as<JsonVariant>();
#endif
_onRequest(request, json);
return;
}
}
request->send(_contentLength > _maxContentLength ? 413 : 400);
} else {
request->send(500);
}
}
void AsyncCallbackJsonWebHandler::handleBody(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) {
if (_onRequest) {
_contentLength = total;
if (total > 0 && request->_tempObject == NULL && total < _maxContentLength) {
request->_tempObject = malloc(total);
if (request->_tempObject == NULL) {
#ifdef ESP32
log_e("Failed to allocate");
#endif
request->abort();
return;
}
}
if (request->_tempObject != NULL) {
memcpy((uint8_t *)(request->_tempObject) + index, data, len);
}
}
}
#endif // ASYNC_JSON_SUPPORT
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