#include <ESP8266WiFi.h>


int ADC= A0; //analogue channel

const char* ssid     = "YourWifi"; //WIFI NAME
const char* password = "YourPassword"; //WIFI PASSWORD

const char* host = "emoncms.org";
const int DHWRelay =4;
int DHWRelayState =0;

void setup() {
  pinMode (DHWRelay, INPUT);
  Serial.begin(9600);//Baud rate
  delay(10);

  

  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");  
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

  

}

int value = 0;

void loop() {
  
  DHWRelayState = digitalRead(DHWRelay);
  
  
  delay(2000);
  ++value;



//set up input params
int value = LOW;
float ADCVal=0.0;
float voltageVal=0.0;
float lpmFlowVal=0.0;

 for(unsigned int i=0;i<10;i++){
 ADCVal=ADCVal+analogRead(ADC);         //Read analog ADC value
  delay(5);                              //ADC stable
  }
  ADCVal=(float)ADCVal/10.0;            //Find average of 10 values
  voltageVal=(float)(ADCVal/1024.0)*3;      //Convert to voltage
  if(voltageVal<0.5) {
    lpmFlowVal=0.00;                         //does not read below 0.5V
  }else{
       lpmFlowVal=(float) voltageVal*47.66666 - 16.83333;   //from Sika VVX25 datasheet
  }



  Serial.print("connecting to ");
  Serial.println(host);
  
  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  const int httpPort = 80;
  if (!client.connect(host, httpPort)) {
    Serial.println("connection failed");
    return;
  }
  
  

  // create a URI for the request

  String urlFlow = "/input/post?node=home&fulljson={\"ASHPFlowV\":" + String(lpmFlowVal) + "}&apikey=YourAPIKey";            // this will have to be edited for your arrangement
  String urlDHWRelay = "/input/post?node=home&fulljson={\"DHWRelayState\":" + String(DHWRelayState) + "}&apikey=YourAPIKey"; // this will have to be edited for your arrangement
  Serial.print("Requesting URL: ");
  Serial.println(urlFlow);
  
  // This will send the request to the server
  client.print(String("GET ") + urlFlow + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" + 
               "Connection: close\r\n\r\n");
  unsigned long timeout = millis();
  while (client.available() == 0) {
    if (millis() - timeout > 5000) {
      Serial.println(">>> Client Timeout !");
      client.stop();
      return;
    }
  }
  
  // Read all the lines of the reply from server and print them to Serial
  while(client.available()){
    String line = client.readStringUntil('\r');
    Serial.print(line);

  }

   
  if (!client.connect(host, httpPort)) {
    Serial.println("connection failed");
    return;
  }
     Serial.print("Requesting URL: ");
     Serial.println(urlDHWRelay);
  // This will send the request to the server
  client.print(String("GET ") + urlDHWRelay + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" + 
               "Connection: close\r\n\r\n");
  unsigned long timeoutDHW = millis();
  while (client.available() == 0) {
    if (millis() - timeoutDHW > 5000) {
      Serial.println(">>> Client Timeout !");
      client.stop();
      return;
    }
  }
  
  // Read all the lines of the reply from server and print them to Serial
  while(client.available()){
    String line = client.readStringUntil('\r');
    Serial.print(line);
  
  }
  
  Serial.println();
  Serial.println("closing connection");
  }