#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"

// --- Pin Connections for ESP32-S3 + ILI9341 ---
// VCC   -> 3.3V
// GND   -> GND
// CS    -> GPIO5
// DC    -> GPIO4
// MOSI  -> GPIO6
// SCK   -> GPIO7
// RST   -> GPIO48
// (CTRL pin 45 not required for ILI9341, can be ignored)

#define TFT_DC   4
#define TFT_CS   5
#define TFT_MOSI 6
#define TFT_CLK  7
#define TFT_RST  48

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

void setup() {
  Serial.begin(115200);
  Serial.println("ESP32-S3 ILI9341 Graphics Test");

  tft.begin();
  tft.setRotation(1);   // Landscape orientation
  tft.fillScreen(ILI9341_BLACK);

  // Splash text
  tft.setCursor(40, 40);
  tft.setTextColor(ILI9341_YELLOW);
  tft.setTextSize(2);
  tft.println("ESP32-S3 + ILI9341");
  delay(2000);
}

void loop() {
  // Test 1: Solid fills
  tft.fillScreen(ILI9341_RED);
  delay(1000);
  tft.fillScreen(ILI9341_GREEN);
  delay(1000);
  tft.fillScreen(ILI9341_BLUE);
  delay(1000);

  // Test 2: Gradient bars
  for (int y = 0; y < tft.height(); y++) {
    uint16_t color = tft.color565(y % 64 * 4, 128, 255 - (y % 64 * 4));
    tft.drawFastHLine(0, y, tft.width(), color);
  }
  delay(2000);

  // Test 3: Shapes
  tft.fillScreen(ILI9341_BLACK);
  tft.fillCircle(60, 60, 40, ILI9341_RED);
  tft.fillRect(120, 40, 80, 60, ILI9341_BLUE);
  tft.drawTriangle(40, 200, 120, 200, 80, 120, ILI9341_GREEN);
  delay(2000);

  // Test 4: Text showcase
  tft.fillScreen(ILI9341_BLACK);
  tft.setCursor(20, 40);
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.println("Graphics Test");
  tft.setCursor(20, 80);
  tft.setTextColor(ILI9341_CYAN);
  tft.setTextSize(2);
  tft.println("AI Centre Nandurbar");
  delay(2000);
}