#include <SPI.h>
#include <SD.h>
#include "FDR_header.h"		// sketch header

File Logger_SD_Writer;

//Write the following functions to the Data_logger Class
Data_logger::Data_logger() {
}


void Data_logger::initialise() {
  if (SD.begin(10,11,12,13)) {
  	Serial.println("SD card initialised");
  }
  else {
  	Serial.println("SD card error");
  }

 // if (SD.exists("Flight_Data.txt")) {
    Logger_SD_Writer = SD.open("Flight_Data.txt", FILE_WRITE);
    Logger_SD_Writer.println("<----------------------- New Session ----------------------->");
    Logger_SD_Writer.println("");
    Logger_SD_Writer.print("Latitude, ");
    Logger_SD_Writer.print("Longitude, ");
    Logger_SD_Writer.print("Altitude / m, ");
    Logger_SD_Writer.print("Heading, ");
    Logger_SD_Writer.print("Speed / Knots, ");
    Logger_SD_Writer.print("x axis accel / ms^-2");
    Logger_SD_Writer.print("y axis accel / ms^-2");
    Logger_SD_Writer.print("z axis accel / ms^-2");
    Logger_SD_Writer.println("Time Stamp");
    Logger_SD_Writer.close();
  //}
  Serial.println("Data Logger Ready");
}


void Data_logger::Write_Data() {
 // if (SD.exists("Flight_Data.txt")) {
    // Open data file
    Logger_SD_Writer = SD.open("Flight_Data.txt", FILE_WRITE);
    Logger_SD_Writer.print(longitude);
    Logger_SD_Writer.print(",");
    Logger_SD_Writer.print(latitude);
    Logger_SD_Writer.print(",");
    Logger_SD_Writer.print(altitude);
    Logger_SD_Writer.print(",");
    Logger_SD_Writer.print(heading);
    Logger_SD_Writer.print(",");
    Logger_SD_Writer.print(speed_knots);
    Logger_SD_Writer.print(",");
    Logger_SD_Writer.print(x_g);
    Logger_SD_Writer.print(",");
    Logger_SD_Writer.print(y_g);
    Logger_SD_Writer.print(",");
    Logger_SD_Writer.print(z_g);
    Logger_SD_Writer.print(",");
    Logger_SD_Writer.println(timeStamp);
    Logger_SD_Writer.close();      //close the parsed data file
  //}
}