#include <Arduino.h>
#include <U8g2lib.h>
#include <Wire.h>

U8G2_SH1107_128X128_1_HW_I2C u8g2(U8G2_R0);

// Placeholder data variables
float temperature = 25.5;  // Placeholder temperature value (in °C)
float humidity = 50.0;     // Placeholder humidity value (in %)
float pressure = 1013.2;   // Placeholder pressure value (in hPa)
int pm25 = 10;             // Placeholder PM2.5 value (in µg/m³)
int voc = 150;             // Placeholder VOC value (in ppb)
int co2 = 400;             // Placeholder CO2 value (in ppm)
int batteryLevel = 75;     // Placeholder battery level (in %)
bool bluetoothConnected = true;  // Placeholder Bluetooth connection status

// Bluetooth logo bitmaps
static const unsigned char image_Ble_disconnected_15x15_bits[] PROGMEM = {
  0xE0,0x03,0x18,0x0C,0x84,0x10,0x82,0x21,0x92,0x22,0xA1,0x44,0xC1,0x42,0x81,0x41,
  0xC1,0x42,0xA1,0x44,0x92,0x02,0x82,0x21,0x84,0x10,0x18,0x0C,0xE0,0x03
};

static const unsigned char image_Ble_connected_15x15_bits[] PROGMEM = {
  0xE0,0x03,0xF8,0x0F,0x7C,0x1F,0x7E,0x3E,0x6E,0x3D,0x5F,0x7B,0x3F,0x7D,0x7F,0x7E,
  0x3F,0x7D,0x5F,0x7B,0x6e,0x3d,0x7e,0x3e,0x7c,0x1f,0xf8,0x0f,0xe0,0x03
};

void setup() {
  u8g2.begin();
  u8g2.setContrast(255);
}

void draw_interface() {
  // Draw "Air Quality Monitor" in the top middle part of the screen
  u8g2.setFont(u8g2_font_haxrcorp4089_tr);
  u8g2.drawStr(25, 15, "Air Quality Monitor");

  // Draw Bluetooth Logo
  u8g2.setBitmapMode(1);
  if (bluetoothConnected) {
    u8g2.drawXBMP(0, 0, 15, 15, image_Ble_connected_15x15_bits);
  } else {
    u8g2.drawXBMP(0, 0, 15, 15, image_Ble_disconnected_15x15_bits);
  }

  // Draw Battery Level
  u8g2.drawRFrame(110, 4, 14, 10, 2); // Battery outline
  int batteryWidth = map(batteryLevel, 0, 100, 0, 10);
  u8g2.drawBox(112, 6, batteryWidth, 6); // Battery level indicator

  u8g2.setFont(u8g2_font_haxrcorp4089_tr);
  u8g2.drawStr(10, 43, "Temperature:");
  u8g2.drawStr(10, 55, "Humidity:");
  u8g2.drawStr(10, 67, "Pressure:");
  u8g2.drawStr(10, 79, "PM2.5:");
  u8g2.drawStr(10, 91, "VOC:");
  u8g2.drawStr(10, 103, "CO2:");

  u8g2.setFont(u8g2_font_8x13_mf);
  u8g2.setCursor(70, 43);
  u8g2.print(temperature, 1); // Display temperature with one decimal place
  u8g2.setCursor(70, 55);
  u8g2.print(humidity, 1); // Display humidity with one decimal place
  u8g2.setCursor(70, 67);
  u8g2.print(pressure, 1); // Display pressure with one decimal place
  u8g2.setCursor(70, 79);
  u8g2.print(pm25);
  u8g2.setCursor(70, 91);
  u8g2.print(voc);
  u8g2.setCursor(70, 103);
  u8g2.print(co2);
}

void loop() {
  u8g2.firstPage();
  do {
    draw_interface();
  } while (u8g2.nextPage());
}