From cacf3b0c49e4f63a8753493def5e51ac027e7350 Mon Sep 17 00:00:00 2001
From: Andrew Melvin <amelvin@Andrew-MBA.local>
Date: Thu, 28 Jan 2016 18:34:27 +0200
Subject: [PATCH 1/4] Add header to extend server for arduinojson

---
 src/ESPasyncJson.h | 76 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 src/ESPasyncJson.h

diff --git a/src/ESPasyncJson.h b/src/ESPasyncJson.h
new file mode 100644
index 0000000..198a941
--- /dev/null
+++ b/src/ESPasyncJson.h
@@ -0,0 +1,76 @@
+// ESPasyncJson.h
+/*
+  Async Response to use with arduinoJson and asyncwebserver
+  Written by Andrew Melvin (SticilFace) with help from me-no-dev and BBlanchon.
+
+  example of callback in use
+
+   server.on("/json", HTTP_ANY, [](AsyncWebServerRequest * request) {
+
+    AsyncJsonResponse * response = new AsyncJsonResponse();
+    JsonObject& root = response->getRoot(); 
+    root["key1"] = "key number one";
+    JsonObject& nested = root.createNestedObject("nested"); 
+    nested["key1"] = "key number one";
+
+    response->setLength();
+    request->send(response); 
+  });
+
+*/
+
+#pragma once
+#include <ArduinoJson.h> 
+
+/*
+ * Json Response
+ * */
+
+class ChunkPrint : public Print{
+  private:
+    uint8_t* _destination;
+    size_t _to_skip;
+    size_t _to_write;
+    size_t _pos;
+  public:
+    ChunkPrint(uint8_t* destination, size_t from, size_t len)
+      : _destination(destination), _to_skip(from), _to_write(len), _pos{0} {}
+    size_t write(uint8_t c){
+      if (_to_skip > 0) {
+        _to_skip--;
+        return 0; 
+      } else if (_to_write > 0) {
+        _to_write--;
+        _destination[_pos++] = c;
+        return 1; 
+      }
+      return 0;
+    }
+};
+    
+class AsyncJsonResponse: public AsyncAbstractResponse {
+  private:
+    DynamicJsonBuffer _jsonBuffer;
+    JsonVariant _root;
+    bool _isValid; 
+  public:
+    AsyncJsonResponse(): _isValid{false} {
+      _code = 200;
+      _contentType = "text/json";
+      _root = _jsonBuffer.createObject();
+    }
+    ~AsyncJsonResponse() {}
+    JsonVariant & getRoot() { return _root; }
+    bool _sourceValid() { return _isValid; }
+    bool setLength() { 
+
+      _contentLength = _root.measureLength();
+      if (_contentLength) { _isValid = true; }
+    }
+        
+    size_t _fillBuffer(uint8_t *data, size_t len){
+      ChunkPrint dest(data, _sentLength, len); 
+      _root.printTo( dest ) ;
+      return len; 
+    }
+};
\ No newline at end of file

From d9234dbc9c72e9a8daa2c394818666abcd767b0a Mon Sep 17 00:00:00 2001
From: Andrew Melvin <amelvin@Andrew-MBA.local>
Date: Thu, 28 Jan 2016 18:49:55 +0200
Subject: [PATCH 2/4] rename to AsyncJson.h from ESPasyncJson.h

---
 src/{ESPasyncJson.h => AsyncJson.h} | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 rename src/{ESPasyncJson.h => AsyncJson.h} (100%)

diff --git a/src/ESPasyncJson.h b/src/AsyncJson.h
similarity index 100%
rename from src/ESPasyncJson.h
rename to src/AsyncJson.h

From 45b74f0cb6e6152f3a0e6cc7c93ee066a6256c1a Mon Sep 17 00:00:00 2001
From: Andrew Melvin <amelvin@Andrew-MBA.local>
Date: Thu, 28 Jan 2016 20:31:56 +0200
Subject: [PATCH 3/4] fix return in skip make setLength void make destructor
 virtual

---
 src/AsyncJson.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/AsyncJson.h b/src/AsyncJson.h
index 198a941..481a27b 100644
--- a/src/AsyncJson.h
+++ b/src/AsyncJson.h
@@ -38,7 +38,7 @@ class ChunkPrint : public Print{
     size_t write(uint8_t c){
       if (_to_skip > 0) {
         _to_skip--;
-        return 0; 
+        return 1; 
       } else if (_to_write > 0) {
         _to_write--;
         _destination[_pos++] = c;
@@ -59,10 +59,10 @@ class AsyncJsonResponse: public AsyncAbstractResponse {
       _contentType = "text/json";
       _root = _jsonBuffer.createObject();
     }
-    ~AsyncJsonResponse() {}
+    virtual ~AsyncJsonResponse() {}
     JsonVariant & getRoot() { return _root; }
     bool _sourceValid() { return _isValid; }
-    bool setLength() { 
+    void setLength() { 
 
       _contentLength = _root.measureLength();
       if (_contentLength) { _isValid = true; }

From fe49272cae3d927e0760547b97052221c561f0d3 Mon Sep 17 00:00:00 2001
From: Andrew Melvin <amelvin@Andrew-MBA.local>
Date: Thu, 28 Jan 2016 20:47:55 +0200
Subject: [PATCH 4/4] Oops

---
 src/AsyncJson.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/AsyncJson.h b/src/AsyncJson.h
index 481a27b..816bd3c 100644
--- a/src/AsyncJson.h
+++ b/src/AsyncJson.h
@@ -35,6 +35,7 @@ class ChunkPrint : public Print{
   public:
     ChunkPrint(uint8_t* destination, size_t from, size_t len)
       : _destination(destination), _to_skip(from), _to_write(len), _pos{0} {}
+    virtual ~ChunkPrint(); 
     size_t write(uint8_t c){
       if (_to_skip > 0) {
         _to_skip--;
@@ -59,7 +60,7 @@ class AsyncJsonResponse: public AsyncAbstractResponse {
       _contentType = "text/json";
       _root = _jsonBuffer.createObject();
     }
-    virtual ~AsyncJsonResponse() {}
+    ~AsyncJsonResponse() {}
     JsonVariant & getRoot() { return _root; }
     bool _sourceValid() { return _isValid; }
     void setLength() {