#include <Wire.h>
#include <lvgl.h>
#include "ui.h"


#include <Arduino_GFX_Library.h>
#define TFT_BL 2
#define LGFX_USE_V1
#include <LovyanGFX.hpp>
#include <lgfx/v1/platforms/esp32s3/Panel_RGB.hpp>
#include <lgfx/v1/platforms/esp32s3/Bus_RGB.hpp>

class LGFX : public lgfx::LGFX_Device {
public:
    lgfx::Bus_RGB     _bus_instance;
    lgfx::Panel_RGB   _panel_instance;
    
    LGFX() {
        auto cfg = _bus_instance.config();
        cfg.panel = &_panel_instance;

        cfg.pin_d0  = GPIO_NUM_15; // B0
        cfg.pin_d1  = GPIO_NUM_7;  // B1
        cfg.pin_d2  = GPIO_NUM_6;  // B2
        cfg.pin_d3  = GPIO_NUM_5;  // B3
        cfg.pin_d4  = GPIO_NUM_4;  // B4

        cfg.pin_d5  = GPIO_NUM_9;  // G0
        cfg.pin_d6  = GPIO_NUM_46; // G1
        cfg.pin_d7  = GPIO_NUM_3;  // G2
        cfg.pin_d8  = GPIO_NUM_8;  // G3
        cfg.pin_d9  = GPIO_NUM_16; // G4
        cfg.pin_d10 = GPIO_NUM_1;  // G5

        cfg.pin_d11 = GPIO_NUM_14; // R0
        cfg.pin_d12 = GPIO_NUM_21; // R1
        cfg.pin_d13 = GPIO_NUM_47; // R2
        cfg.pin_d14 = GPIO_NUM_48; // R3
        cfg.pin_d15 = GPIO_NUM_45; // R4

        cfg.pin_henable = GPIO_NUM_41;
        cfg.pin_vsync   = GPIO_NUM_40;
        cfg.pin_hsync   = GPIO_NUM_39;
        cfg.pin_pclk    = GPIO_NUM_0;
        cfg.freq_write  = 15000000;

        cfg.hsync_polarity    = 0;
        cfg.hsync_front_porch = 40;
        cfg.hsync_pulse_width = 48;
        cfg.hsync_back_porch  = 40;

        cfg.vsync_polarity    = 0;
        cfg.vsync_front_porch = 1;
        cfg.vsync_pulse_width = 31;
        cfg.vsync_back_porch  = 13;

        cfg.pclk_active_neg   = 1;
        cfg.de_idle_high      = 0;
        cfg.pclk_idle_high    = 0;

        _bus_instance.config(cfg);

        auto panel_cfg = _panel_instance.config();
        panel_cfg.memory_width  = 800;
        panel_cfg.memory_height = 480;
        panel_cfg.panel_width   = 800;
        panel_cfg.panel_height  = 480;
        panel_cfg.offset_x      = 0;
        panel_cfg.offset_y      = 0;
        _panel_instance.config(panel_cfg);

        _panel_instance.setBus(&_bus_instance);
        setPanel(&_panel_instance);
    }
};

LGFX lcd;



#include "touch.h"


/* Change to your screen resolution */
static uint32_t screenWidth;
static uint32_t screenHeight;
static lv_disp_draw_buf_t draw_buf;
static lv_color_t disp_draw_buf[800 * 480 / 10];   // Nota: modifica qui se necessario
//static lv_color_t disp_draw_buf;
static lv_disp_drv_t disp_drv;

/* 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);

#if (LV_COLOR_16_SWAP != 0)
    lcd.pushImageDMA(area->x1, area->y1, w, h, (lgfx::rgb565_t*)&color_p->full);
#else
    lcd.pushImageDMA(area->x1, area->y1, w, h, (lgfx::rgb565_t*)&color_p->full);
#endif

    lv_disp_flush_ready(disp);
}

void my_touchpad_read(lv_indev_drv_t *indev_driver, lv_indev_data_t *data) {
    if (touch_has_signal()) {
        if (touch_touched()) {
            data->state = LV_INDEV_STATE_PR;

            /* Set the coordinates */
            data->point.x = touch_last_x;
            data->point.y = touch_last_y;
            Serial.print("Data x: ");
            Serial.println(touch_last_x);

            Serial.print("Data y: ");
            Serial.println(touch_last_y);
        } else if (touch_released()) {
            data->state = LV_INDEV_STATE_REL;
        }
    } else {
        data->state = LV_INDEV_STATE_REL;
    }
    delay(15);
}

void setup() {
    // IO Port Pins
    
  
    Serial.begin(9600);
    Wire.begin(19, 20);
   
 

    // Init Display
    lcd.begin();
    lcd.fillScreen(TFT_BLACK);
    lcd.setTextSize(2);
    delay(200);


    lv_init();

    delay(100);
    touch_init();

    screenWidth = lcd.width();
    screenHeight = lcd.height();

    lv_disp_draw_buf_init(&draw_buf, disp_draw_buf, NULL, screenWidth * screenHeight / 10);
    /* Initialize the display */
    lv_disp_drv_init(&disp_drv);
    /* Change the following line to your display resolution */
    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 (dummy) 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);


    pinMode(TFT_BL, OUTPUT);
    digitalWrite(TFT_BL, HIGH);


    ui_init(); // UI from Squareline or GUI Guider

    Serial.println("Setup done");
}

void loop() {

    lv_timer_handler();
    delay(5);
}