#include <Adafruit_GFX.h>    // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <SPI.h>

#if defined(ARDUINO_FEATHER_ESP32) // Feather Huzzah32
#define TFT_SCLK 18
#define TFT_MOSI 23
#define TFT_CS 14
#define TFT_DC 32

#define TFT_RST 15

#elif defined(ESP8266)
  #define TFT_CS         D2
  #define TFT_RST        D3
  #define TFT_DC         D4

#else
  // For the breakout board, you can use any 2 or 3 pins.
  // These pins will also work for the 1.8" TFT shield.

#define TFT_SCLK 18
#define TFT_MOSI 23
#define TFT_CS 14
#define TFT_DC 32

#define TFT_RST 15
#endif

// OPTION 1 (recommended) is to use the HARDWARE SPI pins, which are unique
// to each board and not reassignable. For Arduino Uno: MOSI = pin 11 and
// SCLK = pin 13. This is the fastest mode of operation and is required if
// using the breakout board's microSD card.

// For 1.44" and 1.8" TFT with ST7735 use:
// Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

// For 1.14", 1.3", 1.54", 1.69", and 2.0" TFT with ST7789:
//Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);


// OPTION 2 lets you interface the display using ANY TWO or THREE PINS,
// tradeoff being that performance is not as fast as hardware SPI above.
//#define TFT_MOSI 11  // Data out
//#define TFT_SCLK 13  // Clock out

// For ST7735-based displays, we will use this call
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);

// OR for the ST7789-based displays, we will use this call
//Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);


float p = 3.1415926;

void setup(void) {
  Serial.begin(9600);
  Serial.print(F("Hello! ST77xx TFT Test"));

  // Use this initializer if using a 1.8" TFT screen:
  // tft.initR(INITR_BLACKTAB);      // Init ST7735S chip, black tab

  // OR use this initializer if using a 1.8" TFT screen with offset such as WaveShare:
  // tft.initR(INITR_GREENTAB);      // Init ST7735S chip, green tab

  // OR use this initializer (uncomment) if using a 1.44" TFT:
  tft.initR(INITR_144GREENTAB); // Init ST7735R chip, green tab
  tft.setRotation(1);
  // OR use this initializer (uncomment) if using a 0.96" 160x80 TFT:
  //tft.initR(INITR_MINI160x80);  // Init ST7735S mini display
  // OR use this initializer (uncomment) if using a 0.96" 160x80 TFT with 
  // plug-in FPC (if you see the display is inverted!)
  //tft.initR(INITR_MINI160x80_PLUGIN);  // Init ST7735S mini display

  // OR use this initializer (uncomment) if using a 1.3" or 1.54" 240x240 TFT:
  // tft.init(128, 160);           // Init ST7789 240x240

  // OR use this initializer (uncomment) if using a 1.69" 280x240 TFT:
  //tft.init(240, 280);           // Init ST7789 280x240

  // OR use this initializer (uncomment) if using a 2.0" 320x240 TFT:
  //tft.init(240, 320);           // Init ST7789 320x240

  // OR use this initializer (uncomment) if using a 1.14" 240x135 TFT:
  //tft.init(135, 240);           // Init ST7789 240x135
  
  // OR use this initializer (uncomment) if using a 1.47" 172x320 TFT:
  //tft.init(172, 320);           // Init ST7789 172x320

  // SPI speed defaults to SPI_DEFAULT_FREQ defined in the library, you can override it here
  // Note that speed allowable depends on chip and quality of wiring, if you go too fast, you
  // may end up with a black screen some times, or all the time.
  tft.setSPISpeed(40000000);

  Serial.println(F("Initialized"));

  // large block of text
  tft.fillScreen(ST7735_BLACK);
}

void loop() {
    String vietnameseText = "Chào bạn, Nha Trang!"; // Vietnamese text
    // Convert to UTF-8 if necessary (library might handle this internally)

    // Use your font and display functions (like text(), print(), etc.)
    // Example (assuming you have a font and text functions)
    display.setTextSize(2);
    display.setTextColor(ST7735_WHITE, ST7735_BLACK);
    display.setRotation(1); // Adjust rotation as needed
    display.fillRect(0, 0, ST7735_WIDTH, ST7735_HEIGHT, ST7735_BLACK); // Clear screen
    display.print(vietnameseText);
    display.display(); // Update the display
  delay(10000);
}

void tftPrintTest() {
  tft.setCursor(32, 60);
  tft.setTextColor(ST7735_BLACK);
  tft.setTextSize(2);
  tft.println("12345");
  tft.setCursor(26, 80);
  tft.setTextColor(ST7735_BLACK);
  tft.setTextSize(2);
  tft.println("678910");
}