/*
 *  Send TeleInfo via HTTP GET request to $host service.
 *  Read ERDF TeleInfo when received, then send it to the server.
 *  Version 1.0
 */


/*
 * TODO : Gestion du temps pour n'envoyer que toute les minutes (ou un truc du genre)
 */
#include <ESP8266WiFi.h>

//----------------------------------------------------

const char* ssid              = "TNCAP3F2E03";
const char* password          = "73ABCCAA87";

//const char* host              = "datahouse.kingpenguin.tk";
const char* host              = "192.168.1.143";
const int httpPort            = 8080;
const int DEFAULT_INTERVAL    = 60000;  // 60 sec

//----------------------------------------------------
String ADCO     = "";
String OPTARIF  = "";
String BASE     = "";
String HCHP     = "";
String HCHC     = "";
//----------------------------------------------------

// Wait for x second.
void sleepSec(int sec) {
  for (int i=0; i<1000; i++) {
    delay(sec);
  }
}



long nextInterval;

void sendDataToServer() {
  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  if (!client.connect(host, httpPort)) {
    Serial.print("connection failed on host ");
    Serial.print(host);
    Serial.print(":");
    Serial.println(host);
    return;
  }
  
  // We now create a URI for the request
  // TODO a finir
  String url = "/teleinfo/add?ADCO="+ADCO+"&OPTARIF="+OPTARIF+"&BASE="+BASE+"&HCHC="+HCHC+"&HCHP="+HCHP;
  ADCO = "";
  OPTARIF = "";
  BASE = "";
  HCHC = "";
  HCHP = "";
  
  Serial.print("Requesting URL: ");
  Serial.println(url);
  
  // This will send the request to the server
  client.println("GET "+url+" HTTP/1.1");
  client.println("Host: "+String(host));
  client.println("Connection: keep-alive");
//  client.println("Connection: close");
  client.println();
  delay(10);

  Serial.println();
  String line = "";
  while (client.available()) {
    char c = client.read();
    line += c;
  }
  Serial.println(line);
  
  nextInterval = line.toInt();
  if (nextInterval == 0) {
    nextInterval = DEFAULT_INTERVAL;
  }
  nextInterval = millis() + nextInterval;
}


void setup() {
  Serial.begin(1200);
  delay(10);
  
  // We start by connecting to a WiFi network

  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());
}


void loop() {
  if (Serial.available() > 0) {
    String str = Serial.readStringUntil('\n');
    if (millis() >= nextInterval) {
      bool sendable = false;
  
      int i = str.indexOf("ADCO");
      if (i != -1) {
        i = i + 4 +1;
        ADCO = str.substring(i, i+12);
      }
      
      i = str.indexOf("OPTARIF");
      if (i != -1) {
        i = i + 7 +1;
        OPTARIF = str.substring(i, i+4);
      }
      
      i = str.indexOf("BASE");
      if (i != -1) {
        i = i + 4 +1;
        BASE = str.substring(i, i+9);
      }
      
      i = str.indexOf("HCHC");
      if (i != -1) {
        i = i + 4 +1;
        HCHC = str.substring(i, i+9);
      }
      
      i = str.indexOf("HCHP");
      if (i != -1) {
        i = i + 4 +1;
        HCHP = str.substring(i, i+9);
        sendable = true;
      }
  
  
      if (sendable && ADCO != "") {
        sendDataToServer();
      }
    }
  }
}