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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov
#ifndef ASYNC_JSON_H_
#define ASYNC_JSON_H_
#if __has_include("ArduinoJson.h")
#include <ArduinoJson.h>
#if ARDUINOJSON_VERSION_MAJOR >= 5
#define ASYNC_JSON_SUPPORT 1
#else
#define ASYNC_JSON_SUPPORT 0
#endif // ARDUINOJSON_VERSION_MAJOR >= 5
#endif // __has_include("ArduinoJson.h")
#if ASYNC_JSON_SUPPORT == 1
#include <ESPAsyncWebServer.h>
#include "ChunkPrint.h"
#if ARDUINOJSON_VERSION_MAJOR == 6
#ifndef DYNAMIC_JSON_DOCUMENT_SIZE
#define DYNAMIC_JSON_DOCUMENT_SIZE 1024
#endif
#endif
class AsyncJsonResponse : public AsyncAbstractResponse {
protected:
#if ARDUINOJSON_VERSION_MAJOR == 5
DynamicJsonBuffer _jsonBuffer;
#elif ARDUINOJSON_VERSION_MAJOR == 6
DynamicJsonDocument _jsonBuffer;
#else
JsonDocument _jsonBuffer;
#endif
JsonVariant _root;
bool _isValid;
public:
#if ARDUINOJSON_VERSION_MAJOR == 6
AsyncJsonResponse(bool isArray = false, size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE);
#else
AsyncJsonResponse(bool isArray = false);
#endif
JsonVariant &getRoot() {
return _root;
}
bool _sourceValid() const {
return _isValid;
}
size_t setLength();
size_t getSize() const {
return _jsonBuffer.size();
}
size_t _fillBuffer(uint8_t *data, size_t len);
#if ARDUINOJSON_VERSION_MAJOR >= 6
bool overflowed() const {
return _jsonBuffer.overflowed();
}
#endif
};
class PrettyAsyncJsonResponse : public AsyncJsonResponse {
public:
#if ARDUINOJSON_VERSION_MAJOR == 6
PrettyAsyncJsonResponse(bool isArray = false, size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE);
#else
PrettyAsyncJsonResponse(bool isArray = false);
#endif
size_t setLength();
size_t _fillBuffer(uint8_t *data, size_t len);
};
typedef std::function<void(AsyncWebServerRequest *request, JsonVariant &json)> ArJsonRequestHandlerFunction;
class AsyncCallbackJsonWebHandler : public AsyncWebHandler {
protected:
String _uri;
WebRequestMethodComposite _method;
ArJsonRequestHandlerFunction _onRequest;
size_t _contentLength;
#if ARDUINOJSON_VERSION_MAJOR == 6
size_t maxJsonBufferSize;
#endif
size_t _maxContentLength;
public:
#if ARDUINOJSON_VERSION_MAJOR == 6
AsyncCallbackJsonWebHandler(const String &uri, ArJsonRequestHandlerFunction onRequest = nullptr, size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE);
#else
AsyncCallbackJsonWebHandler(const String &uri, ArJsonRequestHandlerFunction onRequest = nullptr);
#endif
void setMethod(WebRequestMethodComposite method) {
_method = method;
}
void setMaxContentLength(int maxContentLength) {
_maxContentLength = maxContentLength;
}
void onRequest(ArJsonRequestHandlerFunction fn) {
_onRequest = fn;
}
bool canHandle(AsyncWebServerRequest *request) const override final;
void handleRequest(AsyncWebServerRequest *request) override final;
void handleUpload(
__unused AsyncWebServerRequest *request, __unused const String &filename, __unused size_t index, __unused uint8_t *data, __unused size_t len,
__unused bool final
) override final {}
void handleBody(AsyncWebServerRequest *request, uint8_t *data, size_t len, size_t index, size_t total) override final;
bool isRequestHandlerTrivial() const override final {
return !_onRequest;
}
};
#endif // ASYNC_JSON_SUPPORT == 1
#endif // ASYNC_JSON_H_
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