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lib/PsychicHttp/src/PsychicJson.h

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+// PsychicJson.h
+/*
+  Async Response to use with ArduinoJson and AsyncWebServer
+  Written by Andrew Melvin (SticilFace) with help from me-no-dev and BBlanchon.
+  Ported to PsychicHttp by Zach Hoeken
+
+*/
+#ifndef PSYCHIC_JSON_H_
+#define PSYCHIC_JSON_H_
+
+#include "PsychicRequest.h"
+#include "PsychicWebHandler.h"
+#include "ChunkPrinter.h"
+#include <ArduinoJson.h>
+
+#if ARDUINOJSON_VERSION_MAJOR == 6
+  #define ARDUINOJSON_6_COMPATIBILITY
+  #ifndef DYNAMIC_JSON_DOCUMENT_SIZE
+    #define DYNAMIC_JSON_DOCUMENT_SIZE 4096
+  #endif
+#endif
+
+
+#ifndef JSON_BUFFER_SIZE
+  #define JSON_BUFFER_SIZE 4*1024
+#endif
+
+constexpr const char *JSON_MIMETYPE = "application/json";
+
+/*
+ * Json Response
+ * */
+
+class PsychicJsonResponse : public PsychicResponse
+{
+  protected:
+    #ifdef ARDUINOJSON_5_COMPATIBILITY
+      DynamicJsonBuffer _jsonBuffer;
+    #elif ARDUINOJSON_VERSION_MAJOR == 6
+      DynamicJsonDocument _jsonBuffer;
+    #else
+      JsonDocument _jsonBuffer;
+    #endif
+
+    JsonVariant _root;
+    size_t _contentLength;
+
+  public:
+    #ifdef ARDUINOJSON_5_COMPATIBILITY
+      PsychicJsonResponse(PsychicRequest *request, bool isArray = false);
+    #elif ARDUINOJSON_VERSION_MAJOR == 6
+      PsychicJsonResponse(PsychicRequest *request, bool isArray = false, size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE);
+    #else
+      PsychicJsonResponse(PsychicRequest *request, bool isArray = false);
+    #endif
+
+    ~PsychicJsonResponse() {}
+
+    JsonVariant &getRoot();
+    size_t getLength();
+    
+    virtual esp_err_t send() override;
+};
+
+class PsychicJsonHandler : public PsychicWebHandler
+{
+  protected:
+    PsychicJsonRequestCallback _onRequest;
+    #if ARDUINOJSON_VERSION_MAJOR == 6
+      const size_t _maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE;
+    #endif
+
+  public:
+    #ifdef ARDUINOJSON_5_COMPATIBILITY
+      PsychicJsonHandler();
+      PsychicJsonHandler(PsychicJsonRequestCallback onRequest);
+    #elif ARDUINOJSON_VERSION_MAJOR == 6
+      PsychicJsonHandler(size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE);
+      PsychicJsonHandler(PsychicJsonRequestCallback onRequest, size_t maxJsonBufferSize = DYNAMIC_JSON_DOCUMENT_SIZE);
+    #else
+      PsychicJsonHandler();
+      PsychicJsonHandler(PsychicJsonRequestCallback onRequest);
+    #endif
+
+    void onRequest(PsychicJsonRequestCallback fn);
+    virtual esp_err_t handleRequest(PsychicRequest *request) override;
+};
+
+#endif