#include <SPI.h>
#include <LoRa.h>       // https://github.com/sandeepmistry/arduino-LoRa
#include <WiFi.h>
#include <HTTPClient.h>
#include <DNSServer.h>
//#include <WiFiManager.h>

// SPI LoRa Radio
#define LORA_SCK 5        // GPIO5 - SX1276 SCK
#define LORA_MISO 19     // GPIO19 - SX1276 MISO
#define LORA_MOSI 27    // GPIO27 - SX1276 MOSI
#define LORA_CS 18     // GPIO18 - SX1276 CS
#define LORA_RST 14   // GPIO14 - SX1276 RST
#define LORA_IRQ 26  // GPIO26 - SX1276 IRQ (interrupt request)

#define azul 32
#define verde 33
#define vermelho 2

const char* ssid     = "WiFi";
const char* password = "20172018";

String idTrap, temp, ent, sai, bat;
String postar;
String service;
String packet = "";
int recebi;
String pk[10];
char MyID = 'R';
String firebase = "https://us-central1-live-farm-prod.cloudfunctions.net";
boolean posicionador = false;

void setup() {

  pinMode(azul, OUTPUT);
  pinMode(verde, OUTPUT);
  pinMode(vermelho, OUTPUT);

  digitalWrite(azul, 1);
  digitalWrite(verde, 1);
  digitalWrite(vermelho, 0);

  Serial.begin(115200);

 // WiFiManager wifiManager;
 // wifiManager.autoConnect("LiveFarm_Config");
  // Connect to Wi-Fi network with SSID and password
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  // Print local IP address and start web server
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

  digitalWrite(azul, 0);
  digitalWrite(verde, 1);
  digitalWrite(vermelho, 1);

  while (!Serial);
  SPI.begin(LORA_SCK, LORA_MISO, LORA_MOSI, LORA_CS);
  LoRa.setPins(LORA_CS, LORA_RST, LORA_IRQ);
  if (!LoRa.begin(915E6)) {
    while (1);
  }
  else
  {Serial.println("Lora ok");}
  LoRa.setSpreadingFactor(12);
}

void loop() {
   int packetSize = LoRa.parsePacket();
   if (packetSize) {
     digitalWrite(azul, 1);
     digitalWrite(verde, 0);
     digitalWrite(vermelho, 1);
     delay(100);
     digitalWrite(azul, 0);
     digitalWrite(verde, 1);
     digitalWrite(vermelho, 1);
     packet = "";
     while (LoRa.available()) {
        packet += (char)LoRa.read(); // Assemble new packet
     }
     Serial.println(packet);
     int ultimoChar = packet.length()-1;
     Serial.println(packet.charAt(ultimoChar));
     pk[0]="";pk[1]="";pk[2]="";
     pk[3]="";pk[4]="";pk[5]="";
     int ref=0;
    for(int w = 0; w<packet.length(); w++){
        char c = packet.charAt(w);
         if(c == ';'){
            ref++;
         }
         else{
           if(c == '@' || c == '!' || c == '?'|| c =='%'){}
           else{pk[ref] += c;}
         }
     }

     idTrap = pk[0];
     ent = pk[1];
     sai = pk[2];
     bat = pk[3];
     temp = pk[4];
     pk[0]="";pk[1]="";pk[2]="";
     pk[3]="";pk[4]="";pk[5]="";
      ref=0;
    for(int w = 0; w<packet.length(); w++){
        char c = packet.charAt(w);
         if(c == ';'){
            ref++;
         }
         else{
           if(c == '@' || c == '!' || c == '?' || c =='%'){}
           else{pk[ref] += c;}
         }
     }

     idTrap = pk[0];
     ent = pk[1];
     sai = pk[2];
     bat = pk[3];
     temp = pk[4];
     Serial.println();
     Serial.print("idTrap: ");Serial.println(idTrap);
     Serial.print("entrada: ");Serial.println(ent);
     Serial.print("saida: ");Serial.println(sai);
     Serial.print("bateria: ");Serial.println(bat);
     Serial.print("temperatura: ");Serial.println(temp);
     Serial.println();Serial.println();
     if(packet.charAt(ultimoChar) == '%' && packet.charAt(0) == MyID){
        Serial.println("recebi do posicionador");
        String resp;
        resp += MyID;
        resp += "XXXXXXXXXXXXXXXXXXXXXXXXX%";
        delay(10);
        LoRa.beginPacket();
        LoRa.print(resp);
        LoRa.endPacket();
        posicionador = true;
     }
     else if(packet.charAt(ultimoChar) == '?' && packet.charAt(0) == MyID){
        String resp;
        resp += MyID;
        resp += "OK";
        LoRa.beginPacket();
        LoRa.print(resp);
        LoRa.endPacket();
        service = "/trapBug";
        postar = "";
        postar += "{";
        postar += '\n';
        postar += "   \"trap\":\"";
        postar += idTrap;
        postar += "\",";
        postar += '\n';

        postar += "   \"hasBug\":";
        postar += "true";
        postar += '\n';
        postar += "}";
        posicionador = false;
     }
     else if(packet.charAt(ultimoChar) == '!' && packet.charAt(0) == MyID){
        String resp;
        resp += MyID;
        resp += "OK";
        LoRa.beginPacket();
        LoRa.print(resp);
        LoRa.endPacket();
        service = "/trapBug";
        postar = "";
        postar += "{";
        postar += '\n';
        postar += "   \"trap\":\"";
        postar += idTrap;
        postar += "\",";
        postar += '\n';

        postar += "   \"hasBug\":";
        postar += "false";
        postar += '\n';
        postar += "}";
        posicionador = false;
     }
     else if(packet.charAt(ultimoChar) == '@' && packet.charAt(0) == MyID){
        String resp;
        resp += MyID;
        resp += "OK";
        LoRa.beginPacket();
        LoRa.print(resp);
        LoRa.endPacket();
        service = "/trapUpdate";
        postar = "";
        postar += "{";
        postar += '\n';
        postar += "   \"trap\":\"";
        postar += idTrap;
        postar += "\",";
        postar += '\n';

        postar += "   \"battery\":";
        postar += bat;
        postar += ",";
        postar += '\n';

        postar += "   \"temperature\":";
        postar += temp;
        postar += '\n';
        postar += "}";
        posicionador = false;
     }
     else{
        String resp;
        resp += idTrap;
        resp += "OK";
        LoRa.beginPacket();
        LoRa.print(resp);
        LoRa.endPacket();
        postar = "";
        postar += "{";
        postar += '\n';
        postar += "   \"trap\":\"";
        postar += idTrap;
        postar += "\",";
        postar += '\n';

        postar += "   \"input\":";
        postar += ent;
        postar += ",";
        postar += '\n';

        postar += "   \"output\":";
        postar += sai;
        postar += ",";
        postar += '\n';

        postar += "   \"battery\":";
        postar += bat;
        postar += ",";
        postar += '\n';

        postar += "   \"temperature\":";
        postar += temp;
        postar += '\n';
        postar += "}";
        posicionador = false;
     }
     if(!posicionador){sendPost();}
   }
}

void sendPost() {

 if(WiFi.status()== WL_CONNECTED){   //Check WiFi connection status
   String EnviarPost = firebase;
   EnviarPost += service;
   HTTPClient http;
   http.begin(EnviarPost);  //Specify destination for HTTP request
   http.addHeader("Content-Type", "application/json");             //Specify content-type header

   int httpResponseCode = http.POST(postar);   //Send the actual POST request

   if(httpResponseCode>0){

    String response = http.getString();                       //Get the response to the request

    Serial.println(httpResponseCode);   //Print return code
    Serial.println(response);           //Print request answer

   }else{

    Serial.print("Error on sending POST: ");
    Serial.println(httpResponseCode);

   }

   http.end();  //Free resources

 }else{

    Serial.println("Error in WiFi connection");

 }

}