#include <Arduino_MKRENV.h>
#include <SPI.h>
#include <SD.h>

const String sdFile   = "December.dat";
float humidity, lux, pressure, temperature, uva, uvb, uvi;
File filePointer;

void setup() {
  // initialize serial and wait for port to open
  Serial.begin(9600);
  while(!Serial) {
    ; // wait for serial port to connect for monitoring/debugging
  }

  // connect to environmental shield
  if(!ENV.begin()) {
    Serial.println("Failed to initialize MKR ENV shield!");
    while(1); // this loops setup() instead of going to loop()
  }

  // connect to SD card
  if(!SD.begin(SD_CHIP_SELECT_PIN)) {
    Serial.println("Failed to mount SD card!");
    return;
  }
  /*
  Sd2Card card;
  Serial.println("Initializing SD card...");
  if(!card.init(SPI_HALF_SPEED, SD_CHIP_SELECT_PIN)) {
    Serial.println("Could not connect to SD card.  See https://tigoe.github.io/DataloggingExamples/mkr-datalogging.html");
    while (1);
  }
  */
}

void loop() {
  // get the sensor values
  humidity    = float(ENV.readHumidity());
  lux         = float(ENV.readIlluminance());
  pressure    = float(ENV.readPressure());
  temperature = float(ENV.readTemperature());
  uva         = abs(float(ENV.readUVA()));
  uvb         = abs(float(ENV.readUVB()));
  uvi         = float(ENV.readUVIndex());

  save();
  delay(5000);
}

void save() {
  // datatype cast int->string
  String humidityStr    = String(humidity);
  String luxStr         = String(lux);
  String pressureStr    = String(pressure);
  String temperatureStr = String(temperature);
  String uvaStr         = String(uva);
  String uvbStr         = String(uvb);
  String uviStr         = String(uvi);

  String logData = humidityStr + ", " + luxStr + ", " + pressureStr + ", " + temperatureStr + ", " + uvaStr + ", " + uvbStr + ", " + uvi;
  Serial.println(logData);

  filePointer = SD.open(sdFile, FILE_WRITE);
  if(filePointer) {
    filePointer.println(logData);
    filePointer.close();
    blink();
  }
  else {
    Serial.println("Could not open file!");
  }


}

void debug() {
  // create labels for output
  String outHumidity    = "Humidity: ";
  String outLux         = "Lux: ";
  String outPressure    = "Pressure: ";
  String outTemperature = "Temperature: ";
  String outUVa         = "UVa: ";
  String outUVb         = "UVb: ";
  String outUVi         = "UVIndex: ";

  // report sensor information
  Serial.println(outHumidity + humidity + "% rh");
  Serial.println(outLux + lux + " lux"); // verify that 1600 is valid for lux/lumens
  Serial.println(outPressure + pressure); // 101 what?
  Serial.println(outTemperature + temperature + " celcius");
  Serial.println(outUVa + uva + " nm");
  Serial.println(outUVb + uvb + " nm");
  Serial.println(outUVi + uvi);
  Serial.println();
}

void sdinfo() {
  SdVolume volume;
  SdFile root;
  Sd2Card card;

  // print the type of card
  Serial.println();
  Serial.print("Card type:         ");
  switch (card.type()) {
    case SD_CARD_TYPE_SD1:
      Serial.println("SD1");
      break;
    case SD_CARD_TYPE_SD2:
      Serial.println("SD2");
      break;
    case SD_CARD_TYPE_SDHC:
      Serial.println("SDHC");
      break;
    default:
      Serial.println("Unknown");
  }

  // Now we will try to open the 'volume'/'partition' - it should be FAT16 or FAT32
  if (!volume.init(card)) {
    Serial.println("Could not find FAT16/FAT32 partition.\nMake sure you've formatted the card");
    while (1);
  }

  Serial.print("Clusters:          ");
  Serial.println(volume.clusterCount());
  Serial.print("Blocks x Cluster:  ");
  Serial.println(volume.blocksPerCluster());

  Serial.print("Total Blocks:      ");
  Serial.println(volume.blocksPerCluster() * volume.clusterCount());
  Serial.println();

  // print the type and size of the first FAT-type volume
  uint32_t volumesize;
  Serial.print("Volume type is:    FAT");
  Serial.println(volume.fatType(), DEC);

  volumesize = volume.blocksPerCluster();    // clusters are collections of blocks
  volumesize *= volume.clusterCount();       // we'll have a lot of clusters
  volumesize /= 2;                           // SD card blocks are always 512 bytes (2 blocks are 1KB)
  Serial.print("Volume size (Kb):  ");
  Serial.println(volumesize);
  Serial.print("Volume size (Mb):  ");
  volumesize /= 1024;
  Serial.println(volumesize);
  Serial.print("Volume size (Gb):  ");
  Serial.println((float)volumesize / 1024.0);

  Serial.println("\nFiles found on the card (name, date and size in bytes): ");
  root.openRoot(volume);

  // list all files in the card with date and size
  root.ls(LS_R | LS_DATE | LS_SIZE);
}

void blink() {
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(250);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
}