#include <Arduino.h>
#include <IRremote.h>
#include <SPI.h>
#include <LiquidCrystal.h>
#include <Servo.h>
#include <DHT.h>

Servo myservo;  // create servo object to control a servo
int servoValue = 30;    // variable to read the value from the analog pin
char buffer[40];

#define DHTPIN 14       // DHT 22 pin
#define DHTTYPE DHT22   // DHT 22  (AM2302)
DHT dht(DHTPIN, DHTTYPE);  // Initialize DHT sensor for normal 16mhz Arduino

float humid;  //Stores humidity value
float temp; //Stores temperature value
long previousMillis = 0;     
long interval = 5000; 

#define PIN_RECEIVER 13   // Signal Pin of IR receiver
#define PIN_RELAY1 2
#define PIN_RELAY2 3
#define PIN_RELAY3 4
#define PIN_RELAY4 5
#define PIN_SERVO 6

bool triggerRelay1 = 1;
bool triggerRelay2 = 0;
bool triggerRelay3 = 0;
bool triggerRelay4 = 0;

IRrecv receiver(PIN_RECEIVER);
String value;

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void(* resetFunc) (void) = 0; //declare reset function @ address 0

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200); // Any baud rate should work
  Serial.println(F("Hello Arduino\n"));

  pinMode(PIN_RELAY1, OUTPUT);
  pinMode(PIN_RELAY2, OUTPUT);
  pinMode(PIN_RELAY3, OUTPUT);
  pinMode(PIN_RELAY4, OUTPUT);
  digitalWrite(PIN_RELAY1, triggerRelay1);
  digitalWrite(PIN_RELAY2, triggerRelay2);
  digitalWrite(PIN_RELAY3, triggerRelay3);
  digitalWrite(PIN_RELAY4, triggerRelay4);

  receiver.enableIRIn(); // Start the receiver

  dht.begin();

  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("hello, world!");

   myservo.attach(PIN_SERVO);  // attaches the servo on pin PIN_)SERVO to the servo object
   myservo.write(servoValue);
}

void loop() {
  // put your main code here, to run repeatedly:
  // Checks received an IR signal
  if (receiver.decode()) {
    translateIR();
    Serial.println(value);
    receiver.resume();  // Receive the next value
    //Serial.println(receiver.decodedIRData.command);
    //Serial.println(receiver.decodedIRData.decodedRawData);
    //Serial.println(receiver.decodedIRData.decodedRawData, HEX);
    //Serial.println(translateIR());
    // Send string value from translateIR.  Keep it a lenght of five.
    // Send this value with 433 MHz transmitter
    
    lcd.begin(16, 2);
    lcd.print("Hello World!");

    // update temperature and humidity
    unsigned long currentMillis = millis();
    if (currentMillis - previousMillis > interval){
      previousMillis = currentMillis;  
      CheckTemp();
    }
  }
}

void CheckTemp()
{
  Serial.println("temperature check");
  //delay(2000);
  //Read data and store it to variables hum and temp
   humid = dht.readHumidity();
   temp= dht.readTemperature();
     // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  // Read temperature as Fahrenheit (isFahrenheit = true)
  float f = dht.readTemperature(true);
  // Compute heat index in Fahrenheit (the default)
  float hif = dht.computeHeatIndex(f, h);
  // Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);
   //Print temp and humidity values to serial monitor
  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.print(F("°C "));
  Serial.print(f);
  Serial.print(F("°F  Heat index: "));
  Serial.print(hic);
  Serial.print(F("°C "));
  Serial.print(hif);
  Serial.println(F("°F"));
}

String translateIR()
{
  // Takes command based on IR code received
  switch (receiver.decodedIRData.command) {
    case 162:
      value = "POWER";
      Serial.println(F("Resetting Arduino"));
      delay(200);
      resetFunc();  //call reset
      break;
    case 226:
      value = "MENU";
      break;
    case 34:
      value = "TEST";
      break;
    case 2:
      value = "PLUS";
      // Servo up (CW)
      servoValue += 1;
      if (servoValue > 180) {servoValue = 180;}
      myservo.write(servoValue);
      sprintf(buffer, "Servo value is %d", servoValue);
      Serial.println(buffer);
      break;
    case 194:
      value = "BACK";
      break;
    case 224:
      value = "PREV";
      // Servo down (CCW) by 10 moves
      servoValue -= 10;
      if (servoValue < 0) {servoValue = 0;}
      myservo.write(servoValue);
      sprintf(buffer, "Servo value is %d", servoValue);
      Serial.println(buffer);

      break;
    case 168:
      value = "PLAY";
      break;
    case 144:
      value = "NEXT";
      // Servo up (CW) by 10 moves
      servoValue += 10;
      if (servoValue > 180) {servoValue = 180;}
      myservo.write(servoValue);
      sprintf(buffer, "Servo value is %d", servoValue);
      Serial.println(buffer);
      break;
    case 104:
      value = "num 0";
      triggerRelay1 = 0;
      triggerRelay2 = 0;
      triggerRelay3 = 0;
      triggerRelay4 = 0;
      digitalWrite(PIN_RELAY1, triggerRelay1);
      digitalWrite(PIN_RELAY2, triggerRelay2);
      digitalWrite(PIN_RELAY3, triggerRelay3);
      digitalWrite(PIN_RELAY4, triggerRelay4);
      servoValue = 0;
      myservo.write(servoValue);
      break;
    case 152:
      value = "MINUS";
      // Servo down (CCW)
      servoValue -= 1;
      if (servoValue < 0) {servoValue = 0;}
      myservo.write(servoValue);
      sprintf(buffer, "Servo value is %d", servoValue);
      Serial.println(buffer);
      break;
    case 176:
      value = "key C";
      break;
    case 48:
      value = "num 1";
      triggerRelay1 = !triggerRelay1;
      Serial.print("trigger for Relay 1 is ");
      Serial.println(triggerRelay1);
      digitalWrite(PIN_RELAY1, triggerRelay1);
      break;
    case 24:
      value = "num 2";
      triggerRelay2 = !triggerRelay2;
      Serial.print("trigger for Relay 2 is ");
      Serial.println(triggerRelay2);
      digitalWrite(PIN_RELAY2, triggerRelay2);
      break;
    case 122:
      value = "num 3";
      triggerRelay3 = !triggerRelay3;
      Serial.print("trigger for Relay 3 is ");
      Serial.println(triggerRelay3);
      digitalWrite(PIN_RELAY3, triggerRelay3);
      break;
    case 16:
      value = "num 4";
      triggerRelay4 = !triggerRelay4;
      Serial.print("trigger for Relay 4 is ");
      Serial.println(triggerRelay4);
      digitalWrite(PIN_RELAY4, triggerRelay4);
      break;
    case 56:
      value = "num 5";
      break;
    case 90:
      value = "num 6";
      break;
    case 66:
      value = "num 7";
      break;
    case 74:
      value = "num 8";
      break;
    case 82:
      value = "num 9";
      break;
    default:
      value = "other " + receiver.decodedIRData.command;
  }
  return value;
}

/*void translateIR()
{
  // Takes command based on IR code received
  switch (receiver.decodedIRData.command) {
    case 162:
      lcdPrint("POWER");
      break;
    case 226:
      lcdPrint("MENU");
      break;
    case 34:
      lcdPrint("TEST");
      break;
    case 2:
      lcdPrint("PLUS");
      break;
    case 194:
      lcdPrint("BACK");
      break;
    case 224:
      lcdPrint("PREV.");
      break;
    case 168:
      lcdPrint("PLAY");
      break;
    case 144:
      lcdPrint("NEXT");
      break;
    case 104:
      lcdPrint("num: 0");
      break;
    case 152:
      lcdPrint("MINUS");
      break;
    case 176:
      lcdPrint("key: C");
      break;
    case 48:
      lcdPrint("num: 1");
      break;
    case 24:
      lcdPrint("num: 2");
      break;
    case 122:
      lcdPrint("num: 3");
      break;
    case 16:
      lcdPrint("num: 4");
      break;
    case 56:
      lcdPrint("num: 5");
      break;
    case 90:
      lcdPrint("num: 6");
      break;
    case 66:
      lcdPrint("num: 7");
      break;
    case 74:
      lcdPrint("num: 8");
      break;
    case 82:
      lcdPrint("num: 9");
      break;
    default:
      lcd.clear();
      lcd.print(receiver.decodedIRData.command);
      lcd.print(" other button");
  }
}

void lcdPrint(char* text)
{
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("button pressed:");
  lcd.setCursor(0, 1);
  lcd.print(text);
  lcd.print(" code: ");
  lcd.print(receiver.decodedIRData.command);
}
*/