#include <lvgl.h>
#include <TFT_eSPI.h>
#include <ui.h> // Auto-generated by Squareline Studio

/* Change to your screen resolution */
static const uint16_t screenWidth  = 320;
static const uint16_t screenHeight = 240;

static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[screenWidth * screenHeight / 10];

TFT_eSPI tft = TFT_eSPI(screenWidth, screenHeight); /* TFT instance */

/* Define LED Pin */
#define LED_PIN 2

#if LV_USE_LOG != 0
/* Serial debugging */
void my_print(const char *buf)
{
    Serial.printf(buf);
    Serial.flush();
}
#endif

/* Display flushing */
void my_disp_flush(lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p)
{
    uint32_t w = (area->x2 - area->x1 + 1);
    uint32_t h = (area->y2 - area->y1 + 1);

    tft.startWrite();
    tft.setAddrWindow(area->x1, area->y1, w, h);
    tft.pushColors((uint16_t *)&color_p->full, w * h, true);
    tft.endWrite();

    lv_disp_flush_ready(disp);
}

/* Read the touchpad */
/* Read the touchpad */
void my_touchpad_read(lv_indev_drv_t * indev_driver, lv_indev_data_t * data) {
    // Simulate touch interaction
    static bool toggle_touch = false; // A flag to simulate touch press/release
    static uint16_t touchX = 100;     // Simulated X coordinate
    static uint16_t touchY = 75;      // Simulated Y coordinate

    // Toggle touch state every loop to mimic touch press and release
    toggle_touch = !toggle_touch;

    if (toggle_touch) {
        data->state = LV_INDEV_STATE_PR; // Press state
        data->point.x = touchX;          // Simulated X coordinate
        data->point.y = touchY;          // Simulated Y coordinate
    } else {
        data->state = LV_INDEV_STATE_REL; // Release state
    }

    // Print the simulated coordinates for debugging
    Serial.print("Simulated Touch: State = ");
    Serial.print(toggle_touch ? "PRESSED" : "RELEASED");
    if (toggle_touch) {
        Serial.print(", X = ");
        Serial.print(touchX);
        Serial.print(", Y = ");
        Serial.println(touchY);
    } else {
        Serial.println();
    }
}


void setup()
{
    Serial.begin(115200); // Initialize Serial Monitor

    /* Initialize LED Pin */
    pinMode(LED_PIN, OUTPUT);
    digitalWrite(LED_PIN, LOW); // Start with LED OFF

    Serial.println("Initializing LVGL and Display");

    lv_init();

#if LV_USE_LOG != 0
    lv_log_register_print_cb(my_print); /* Register print function for debugging */
#endif

    /* Initialize TFT */
    tft.begin();
    tft.setRotation(3); /* Landscape orientation, flipped */

    /* Initialize LVGL display buffer */
    lv_disp_draw_buf_init(&draw_buf, buf, NULL, screenWidth * screenHeight / 10);

    /* Initialize the display driver */
    static lv_disp_drv_t disp_drv;
    lv_disp_drv_init(&disp_drv);
    disp_drv.hor_res = screenWidth;
    disp_drv.ver_res = screenHeight;
    disp_drv.flush_cb = my_disp_flush;
    disp_drv.draw_buf = &draw_buf;
    lv_disp_drv_register(&disp_drv);

    /* Initialize the touch input device driver */
    static lv_indev_drv_t indev_drv;
    lv_indev_drv_init(&indev_drv);
    indev_drv.type = LV_INDEV_TYPE_POINTER;
    indev_drv.read_cb = my_touchpad_read;
    lv_indev_drv_register(&indev_drv);

    /* Initialize the GUI from Squareline Studio */
    ui_init();

    Serial.println("Setup complete!");
}

void loop()
{
    lv_timer_handler(); /* Let LVGL do its work */
    delay(5); // Small delay for stability
}