#include "RTClib.h"
RTC_DS1307 rtc;
#include<TimerOne.h>
#include<SD.h>
#include<ArduinoJson.h>
#include <DHT.h>
#define Type DHT22
int csPin=10;
int ldrPin=A0;
int sensePin=2;
DHT dht(sensePin,Type);
float ldrValue;
float Intensity;
float tempC;
DateTime current;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Timer1.initialize(1000000);
  Timer1.attachInterrupt(sense_temp);
  attachInterrupt(digitalPinToInterrupt(3),sense_intensity,RISING);
  rtc.begin();
  if(rtc.isrunning()==false){
    Serial.println("rtc is not running");
    rtc.adjust(DateTime(F(__DATE__),F(__TIME__)));
  }
  else{
    Serial.println("RTC is running"); 
  }
  current=rtc.now();
  Serial.println(current.year());
  pinMode(ldrPin,INPUT);
  SD.begin(csPin);
  if(SD.begin(csPin)){
    Serial.println("SD card initialized");
  }
  else{
    Serial.println("SD card initialization failed");
  }
  delay(3000);
  //File myFile=SD.open("data.txt",FILE_WRITE);
  /*if(myFile){
    myFile.println(jsonString);
    myFile.close();
    Serial.println("Written to file");
    //Serial.println(jsonString);
  }
  else{
    Serial.println("failed writing to file");
  }
  delay(3000);
  myFile=SD.open("data.txt");
  if(myFile){
    while(myFile.available()){
      Serial.write(myFile.read());
    }
    myFile.close();
    delay(1000);
    Serial.println("Content read from file");
  }
  else{
    Serial.println("failed reading content from file");
  }
  delay(3000);*/

  dht.begin();
  delay(1000);
}

void sense_temp(){
  Serial.println(1);
  tempC=dht.readTemperature();
  Serial.println(tempC);
  int dhtHr=current.hour();
  int dhtMin=current.minute();
  int dhtSec=current.second();
  File myFile=SD.open("data.txt",FILE_WRITE);
  if(myFile){
    myFile.println("{");
    myFile.print(" ");
    myFile.print("\"Temperature\":[");
    myFile.print(tempC);
    myFile.print(",");
    myFile.print(dhtHr);
    myFile.print("/");
    myFile.print(dhtMin);
    myFile.print("/");
    myFile.print(dhtSec);
    myFile.println("],");
    myFile.close();
  }
  else{
    Serial.println("Failed writing the content to file");
  }

}

void sense_intensity(){
  Serial.print(1);
  DateTime current=rtc.now();
  Serial.print(2);
  ldrValue=analogRead(ldrPin);
  Intensity=map(ldrValue,0,1023,0,255);
  //Intensity=(ldrValue/1023.0)*(255.0);
  Serial.println(Intensity);
  int ldrHr=current.hour();
  int ldrMin=current.minute();
  int ldrSec=current.second();
  File myFile=SD.open("data.txt",O_APPEND);
  if(myFile){
    myFile.print(" ");
    myFile.print("\"Intensity\":[");
    myFile.print(Intensity);
    myFile.print(",");
    myFile.print(ldrHr);
    myFile.print("/");
    myFile.print(ldrMin);
    myFile.print("/");
    myFile.print(ldrSec);
    myFile.println("]");
    myFile.print("}");
    myFile.close();
  } 
  else{
    Serial.println("failed writing the content to file");
  }
  
}

void loop() {
  // put your main code here, to run repeatedly:
  /*File myFile=SD.open("data.txt",FILE_WRITE);
  if(myFile){
    myFile.println("{");
    myFile.print(" ");
    myFile.print("\"Temperature\":[");
    myFile.print(tempC);
    myFile.print(",");
    myFile.print(dhtHr);
    myFile.print("/");
    myFile.print(dhtMin);
    myFile.print("/");
    myFile.print(dhtSec);
    myFile.println("] ,");
    myFile.print(" ");
    myFile.print("\"Intensity\":[");
    myFile.print(Intensity);
    myFile.print(",");
    myFile.print(ldrHr);
    myFile.print("/");
    myFile.print(ldrMin);
    myFile.print("/");
    myFile.print(ldrSec);
    myFile.println("]");
    myFile.print("}");
    myFile.close();
     Serial.println("Content written to file");

  }

  else{
    Serial.println("Failed writing the content to file");
  }
  delay(1000);
  Serial.print("\x1B[2J");
  delay(300);*/
  File myFile=SD.open("data.txt",FILE_READ);
  if(myFile){
    while(myFile.available()){
      Serial.write(myFile.read());
    }
    myFile.close();
  }
  else{
    Serial.println("Error opening the file");
  }
  delay(2000);

}