text: #include "ThingspeakClient.h"
  
  
  ThingspeakClient::ThingspeakClient() {
  
  }
  
  void ThingspeakClient::getLastChannelItem(String channelId, String readApiKey) {
    JsonStreamingParser parser;
    parser.setListener(this);
    WiFiClient client;
  
    // http://api.thingspeak.com/channels/CHANNEL_ID/feeds.json?results=2&api_key=API_KEY
    const char host[] = "api.thingspeak.com";
    String path = "/channels/" + channelId +"/feeds.json?results=1&api_key=" + readApiKey;
  
    const int httpPort = 80;
    if (!client.connect(host, httpPort)) {
      Serial.println("connection failed");
      return;
    }
  
    Serial.print("Requesting path: ");
    Serial.println(path);
  
    // This will send the request to the server
    client.print(String("GET ") + path + " HTTP/1.1\r\n" +
                 "Host: " + host + "\r\n" +
                 "Connection: close\r\n\r\n");
  
    int retryCounter = 0;
    while(!client.available()) {
      Serial.println(".");
      delay(1000);
      retryCounter++;
      if (retryCounter > 10) {
        return;
      }
    }
  
    int pos = 0;
    boolean isBody = false;
    char c;
  
    client.setNoDelay(false);
    while (client.connected() || client.available()) {
      if (client.available()) {
        c = client.read();
        if (c == '{' || c == '[') {
          isBody = true;
        }
        if (isBody) {
          parser.parse(c);
        }
      }
      // give WiFi and TCP/IP libraries a chance to handle pending events
      yield();
    }
    client.stop();
  }
  
  void ThingspeakClient::whitespace(char c) {
  
  }
  
  void ThingspeakClient::startDocument() {
  
  }
  
  void ThingspeakClient::key(String key) {
    if (key == "channel") {
      isHeader = true;
    } else if (key == "feeds") {
      isHeader = false;
    }
    currentKey = key;
  }
  
  void ThingspeakClient::value(String value) {
      //Serial.println(currentKey +": " + value);
  
        for (int i = 1; i < 9; i++) {
          String fieldKey = "field" + String(i);
  
          if (currentKey == fieldKey) {
            if (isHeader) {
              fieldLabels[i-1] = value;
            } else {
              lastFields[i-1] = value;
              Serial.println(fieldKey + ": " + value);
            }
  
          }
        }
  
  
  }
  
  
  String ThingspeakClient::getFieldLabel(int index) {
    return fieldLabels[index];
  }
  
  String ThingspeakClient::getFieldValue(int index) {
    return lastFields[index];
  }
  
  String ThingspeakClient::getCreatedAt() {
    return createdAt;
  }
  
  void ThingspeakClient::endArray() {
  
  }
  
  void ThingspeakClient::endObject() {
  
  }
  
  void ThingspeakClient::endDocument() {
  
  }
  
  void ThingspeakClient::startArray() {
  
  }
  
  void ThingspeakClient::startObject() {
  
  }
  