#include <U8g2lib.h>


// U8X8_SSD1306_128X64_NONAME_HW_I2C display(U8X8_PIN_NONE);
// U8G2_SSD1306_128X64_NONAME_1_HW_I2C(rotation, [reset [, clock, data]]) [page buffer, size = 128 bytes]
// U8G2_SSD1306_128X64_NONAME_1_HW_I2C(5, 4)// [page buffer, size = 128 bytes]
// U8G2_SSD1306_128X64_NONAME_1_HW_I2C(U8G2_R0,U8X8_PIN_NONE,5,4);//[page buffer, size = 128 bytes];
U8G2_SSD1306_128X64_NONAME_1_HW_I2C u8g2(U8G2_R0, U8X8_PIN_NONE, 5, 4);  //[page buffer, size = 128 bytes];


// Temp for testing
#define mobStateLIST_SIZE 3
char *mobStateList[mobStateLIST_SIZE] = { "Connected", "Connecting", "Disconnected" };
#define mobBandLIST_SIZE 3
char *mobBandList[mobBandLIST_SIZE] = { "LTE B20", "LTE B8", "WCDMA 2100" };
#define mobOperatorLIST_SIZE 3
char *mobOperatorList[mobOperatorLIST_SIZE] = { "O2 - UK", "Vodafone - UK", "Lebara" };
#define mobConnTypeLIST_SIZE 3
char *mobConnTypeList[mobConnTypeLIST_SIZE] = { "4G (LTE)", "4G (LTE); VoLTE", "3G" };
// end of temp for testing


int colOne = 5;
int colTwo = 40;
int colThree = 53;
int colFour = 76;
int colFive = 98;

int rowOne = 10;
int rowTwo = 24;
int rowThree = 36;
int rowFour = 48;
int rowFive = 60;

// Temp values for testing
int strValue = 2;
int qalValue = 3;
int pwrValue = 4;
int snrValue = 1;
// end of temp for testing

char mobOperator[14];  // eg "O2 - UK" or "Vodafone UK"
char mobBand[11];      // eg "LTE B41" or "WCDMA 2100"
char mobConnType[16];  // eg "4G (LTE); VoLTE"
char mobState[13];     // eg "Connected"

void setup() {
  Serial.begin(9600);


  u8g2.begin();
  u8g2.setPowerSave(0);
  u8g2.setFont(u8g2_font_helvR08_tf);

  //Initiate random text
  strlcpy(mobState, mobStateList[random(0, 3)], sizeof(mobState));
  strlcpy(mobBand, mobBandList[random(0, 3)], sizeof(mobBand));
  strlcpy(mobOperator, mobOperatorList[random(0, 3)], sizeof(mobOperator));
  strlcpy(mobConnType, mobConnTypeList[random(0, 3)], sizeof(mobConnType));
  // End of random text
}

void loop() {

  u8g2.firstPage();
  do {
    drawInternetScreen();
  } while (u8g2.nextPage());


  // Swap values randomly for testing
  strValue = random(1, 5);
  qalValue = random(1, 4);
  pwrValue = random(1, 4);
  snrValue = random(1, 4);
  strlcpy(mobState, mobStateList[random(0, 3)], sizeof(mobState));
  strlcpy(mobBand, mobBandList[random(0, 3)], sizeof(mobBand));
  strlcpy(mobOperator, mobOperatorList[random(0, 3)], sizeof(mobOperator));
  strlcpy(mobConnType, mobConnTypeList[random(0, 3)], sizeof(mobConnType));

  delay(15000);
  // end of test content
}

void drawInternetScreen() {
  // u8g2.firstPage();
  // do {

  u8g2.setFont(u8g2_font_helvR08_tf);
  u8g2.setCursor(colOne, rowOne);
  // u8g2.print(connectList[0]);  //Connection status
  u8g2.print(mobState);  //Connection status
  u8g2.setCursor(u8g2.getStrWidth(mobState) + colOne + 4, rowOne);
  u8g2.print(mobConnType);  // Line 1
  u8g2.drawHLine(0, 14, 128);

  u8g2.setCursor(colOne, rowFour);
  u8g2.print(F("Operator:"));
  u8g2.setCursor(colOne, rowFive);
  u8g2.print(F("Band:"));


  u8g2.setCursor(colOne, rowTwo);
  u8g2.print(F("Signal"));
  u8g2.setCursor(colOne, rowThree);
  u8g2.print(F("Quality"));

  // u8g2.setCursor(colOne, rowFour);
  // u8g2.print(F("Power"));
  // u8g2.setCursor(colOne, rowFive);
  // u8g2.print(F("SNR"));


  // u8g2.setCursor(colTwo, rowTwo);
  // signalDisplay(colTwo,rowTwo,strValue);
  // signalDisplay(colTwo,rowThree,qalValue);
  signalDisplay(colTwo, rowTwo, strValue, 5);
  signalDisplay(colTwo, rowThree, qalValue, 4);
  signalDisplay(colFive, rowTwo, pwrValue, 4);
  signalDisplay(colFive, rowThree, snrValue, 4);
  // u8g2.print(F("Fair/poor"));
  u8g2.setCursor(colThree, rowFour);
  u8g2.print(mobOperator);
  u8g2.setCursor(colThree, rowFive);
  u8g2.print(mobBand);
  u8g2.setCursor(colFour, rowTwo);
  u8g2.print(F("Pwr"));
  u8g2.setCursor(colFour, rowThree);
  u8g2.print(F("Sinr"));

  // } while (u8g2.nextPage());
}

void signalDisplay(int x, int y, int value, int numPoints) {
  int height = 6;
  int width = 5;
  int space = 1;
  int xOrigin = x;
  int yOrigin = y - height - 0;
  u8g2.drawBox(xOrigin, yOrigin, width, height);  //x, y, width, height
  xOrigin = xOrigin + width + space;
  if (value > 1) {
    u8g2.drawBox(xOrigin, yOrigin, width, height);  //x, y, width, height
  } else {
    u8g2.drawFrame(xOrigin, yOrigin, width, height);  //x, y, width, height
  }
  xOrigin = xOrigin + width + space;
  if (value > 2) {
    u8g2.drawBox(xOrigin, yOrigin, width, height);  //x, y, width, height
  } else {
    u8g2.drawFrame(xOrigin, yOrigin, width, height);  //x, y, width, height
  }
  xOrigin = xOrigin + width + space;
  if (value > 3) {
    u8g2.drawBox(xOrigin, yOrigin, width, height);  //x, y, width, height
  } else {
    u8g2.drawFrame(xOrigin, yOrigin, width, height);  //x, y, width, height
  }
  if (numPoints > 4) {
    xOrigin = xOrigin + width + space;
    if (value > 4) {
      u8g2.drawBox(xOrigin, yOrigin, width, height);  //x, y, width, height
    } else {
      u8g2.drawFrame(xOrigin, yOrigin, width, height);  //x, y, width, height
    }
  }
}