#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>

#define TFT_DC 2
#define TFT_CS 15
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

// Global variables for small vertical line
int smallVerticalLineX;
int smallVerticalLineHeight;
int PMSensor = 34;
int test = 0;
int test2 = 250;
int test3 = 354;

void setup() {
  Serial.begin(9600);
  tft.begin();
  tft.setRotation(1);  // Set rotation to 3
  tft.fillScreen(ILI9341_BLACK);
  tft.setTextColor(ILI9341_WHITE);

  // Draw a box that fills the entire screen with a gap of gapSize
  int gapSize = 22; // Adjust the size of the gap
  int lineDistance = -10; // Adjust the distance of the lines from the box
  int boxX = gapSize;
  int boxY = gapSize;
  int boxWidth = tft.width() - 2 * gapSize;
  int boxHeight = tft.height() - 2 * gapSize;

  // RGB values for light blue (adjust as needed)
  int boxColor = tft.color565(173, 216, 230);

  tft.drawRect(boxX, boxY, boxWidth, boxHeight, boxColor);

  // Draw a horizontal line at the top with a gap of gapSize
  int topLineY = boxY + gapSize - lineDistance;
  tft.drawFastHLine(boxX, topLineY, boxWidth, boxColor);

  // Draw a horizontal line at the bottom with a gap of gapSize
  int bottomLineY = boxY + boxHeight - gapSize + lineDistance;
  tft.drawFastHLine(boxX, bottomLineY, boxWidth, boxColor);

 int middleX = boxX + boxWidth * 6 / 10;
 tft.drawFastVLine(middleX, topLineY, bottomLineY - topLineY, boxColor);

  // Draw a horizontal line from the left to the vertical line, 2/3 of the box height
  int leftLineX = boxX;
  int leftLineY = boxY + boxHeight * 3 / 5;
  int lineLength = middleX - leftLineX;
  tft.drawFastHLine(leftLineX, leftLineY, lineLength, boxColor);

    // Print text on the screen
  tft.setTextSize(1.2);
  tft.setCursor(58, 35);
  tft.print("AIR PURIFIER AND MONITORING SYSTEM");

tft.setTextSize(1.2);
    tft.setCursor(30, 60);
  tft.print("PM2.5 :");

      tft.setCursor(110, 145);
  tft.print("PM1 :");
      tft.setCursor(30, 145);
  tft.print("PM10 :");

tft.setTextSize(1.5);
        tft.setCursor(195, 60);
  tft.print("AQI:");

 tft.fillRect(138, 208, 127, 12, ILI9341_WHITE);
  tft.fillRect(140, 205, 25, 8, ILI9341_GREEN);
  tft.fillRect(165, 205, 25, 8, ILI9341_YELLOW);
  tft.fillRect(190, 205, 25, 8, tft.color565(255, 165, 0));
  tft.fillRect(215, 205, 25, 8, ILI9341_RED);
  tft.fillRect(240, 205, 25, 8, tft.color565(128, 0, 0));

}

void loop() {
  Screen();
  ColourScreen();
  delay(100);
}

void Screen() {
   int sensorValue = analogRead(PMSensor);

  // Convert sensor value to a string
  String sensorString = String(sensorValue);
  test = test + 50;
 delay(2500);
    if(test > 350) {
        test = 0;
    }
tft.fillRect(65, 80, 90, 50, ILI9341_BLACK);
tft.fillRect(130, 160, 34, 15, ILI9341_BLACK);
tft.fillRect(50, 160, 34, 15, ILI9341_BLACK);
tft.fillRect(200, 80, 80, 60, ILI9341_BLACK);

   // Display the sensor value on the screen
  tft.setTextSize(5);
  tft.setTextColor(ILI9341_WHITE);  // Set text color explicitly
  tft.setCursor(65, 80);
  tft.print(test);

  tft.setTextSize(2.2);
  tft.setTextColor(ILI9341_WHITE);  // Set text color explicitly
  tft.setCursor(130, 160);
  tft.print(test);

  tft.setTextSize(2.2);
  tft.setTextColor(ILI9341_WHITE);  // Set text color explicitly
  tft.setCursor(50, 160);
  tft.print(test);

  tft.setTextSize(4);
  tft.setTextColor(ILI9341_WHITE);  // Set text color explicitly
  tft.setCursor(210, 85);
  tft.print(test);
 

delay(2000);
}

void ColourScreen() {
  if (test < 50) {
    tft.fillRect(30, 200, 60, 10, ILI9341_BLACK);
    tft.setCursor(30, 200);
    tft.setTextSize(1.8);
    tft.setTextColor(ILI9341_GREEN);
    tft.print("Good");
  }

  if (test > 50) {
    tft.fillRect(30, 200, 60, 10, ILI9341_BLACK);
    tft.setCursor(30, 200);
    tft.setTextSize(1.8);
    tft.setTextColor(ILI9341_YELLOW);
    tft.print("Mild");
  }

  if (test > 100) {
    tft.fillRect(30, 200, 60, 10, ILI9341_BLACK);
    tft.setCursor(30, 200);
    tft.setTextSize(1.8);
    tft.setTextColor(tft.color565(255, 165, 0)); // Assign color using color565()
    tft.print("Moderate");
  }

  if (test > 150) {
    tft.fillRect(30, 200, 60, 10, ILI9341_BLACK);
    tft.setCursor(30, 200);
    tft.setTextSize(1.8);
    tft.setTextColor(ILI9341_RED);
    tft.print("Severe");
  }

  if (test > 200) {
    tft.fillRect(30, 200, 60, 10, ILI9341_BLACK);
    tft.setCursor(30, 200);
    tft.setTextSize(1.8);
    tft.setTextColor(tft.color565(128, 0, 128)); // Assign color using color565()
    tft.print("Unhealthy");
  }

  if (test > 300) {
    tft.fillRect(30, 200, 60, 10, ILI9341_BLACK);
    tft.setCursor(30, 200);
    tft.setTextSize(1.8);
    tft.setTextColor(tft.color565(128, 0, 0)); // Assign color using color565()
    tft.print("Hazardous");
  }
}