//
// display_gui: display elements onscreen 
//

#include "display_gui.h"
#include "display.h"
#include "esp_lvgl_port.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_check.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"




static lv_obj_t *ui_Screen1;
static lv_obj_t *ui_redsquare;

static lv_obj_t *meter;
static lv_meter_indicator_t *meter_indic1;

static lv_obj_t *ue_img_logo;
static lv_obj_t *esp_img_logo;
static lv_obj_t *label;


static lv_obj_t *ui_Dropdown2;

LV_IMG_DECLARE(ue_logo)
LV_IMG_DECLARE(esp_logo)
LV_IMG_DECLARE(red_square)


void display_gui_homescreen(void)
{

    // Actually create homescreen widgets

    
    display_lock(0);

    label = lv_label_create(lv_scr_act());
    lv_label_set_text(label, "Yup");
    // lv_obj_align_to(label, lv_scr_act(), LV_ALIGN_OUT_BOTTOM_MID, 0, 10);


    // display_slider();
    //Call one at a time to see examples
    display_meter();
    // display_image();
    // display_window();
    //display_dropdown();

    display_unlock();
}













void display_meter()
{
    meter = lv_meter_create(lv_scr_act());
    lv_obj_center(meter);
    lv_obj_set_size(meter, 140, 140);

    /*Remove the circle from the middle*/
    lv_obj_remove_style(meter, NULL, LV_PART_INDICATOR);

    /*Add a scale first*/
    lv_meter_scale_t *scale = lv_meter_add_scale(meter);
    lv_meter_set_scale_ticks(meter, scale, 11, 2, 10, lv_palette_main(LV_PALETTE_GREY));
    lv_meter_set_scale_major_ticks(meter, scale, 1, 2, 15, lv_color_hex3(0xeee), 10);
    lv_meter_set_scale_range(meter, scale, 0, 100, 270, 90);

    /*Add a three arc indicator*/
     meter_indic1 = lv_meter_add_arc(meter, scale, 10, lv_color_hex3(0x00F), 0);
    // lv_meter_indicator_t *indic2 = lv_meter_add_arc(meter, scale, 10, lv_color_hex3(0x0F0), -10);
    // lv_meter_indicator_t *indic3 = lv_meter_add_arc(meter, scale, 10, lv_color_hex3(0xF00), -20);

    /*Create an animation to set the value*/
    /*lv_anim_t a;
    lv_anim_init(&a);
    lv_anim_set_exec_cb(&a, set_value);
    lv_anim_set_values(&a, 0, 100);
    lv_anim_set_repeat_delay(&a, 100);
    lv_anim_set_playback_delay(&a, 2000);
    lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);

    lv_anim_set_time(&a, 2000);
    lv_anim_set_playback_time(&a, 500);
    lv_anim_set_var(&a, indic1);
    lv_anim_start(&a); */

    /*
        lv_anim_set_time(&a, 1000);
        lv_anim_set_playback_time(&a, 1000);
        lv_anim_set_var(&a, indic2);
        lv_anim_start(&a);

        lv_anim_set_time(&a, 1000);
        lv_anim_set_playback_time(&a, 2000);
        lv_anim_set_var(&a, indic3);
        lv_anim_start(&a);
        */
    /* page 3 */
}

static void dropdown_event_handler(lv_event_t *e)
{
    lv_event_code_t code = lv_event_get_code(e);
    lv_obj_t *obj = lv_event_get_target(e);
    if (code == LV_EVENT_VALUE_CHANGED)
    {
        char buf[32];
        lv_dropdown_get_selected_str(obj, buf, sizeof(buf));
        LV_LOG_USER("Option: %s", buf);
    }
}

/**
 * @brief dispaly dropdown is rotated 180 degrees (USB to the right is the orentation)
 *
 */
void display_dropdown()
{
    lv_disp_t *dispp = lv_disp_get_default();
    ui_Dropdown2 = lv_dropdown_create(lv_scr_act());
    lv_dropdown_set_options(ui_Dropdown2, "Apple\n"
                                          "Banana\n"
                                          "Orange\n"
                                          "Melon\n"
                                          "Grape\n"
                                          "Raspberry");
    lv_obj_set_width(ui_Dropdown2, 150);
    lv_obj_set_height(ui_Dropdown2, LV_SIZE_CONTENT); /// 1
    lv_obj_set_x(ui_Dropdown2, 0);
    lv_obj_set_y(ui_Dropdown2, -20);
    lv_obj_set_align(ui_Dropdown2, LV_ALIGN_CENTER);
    lv_obj_add_flag(ui_Dropdown2, LV_OBJ_FLAG_SCROLL_ON_FOCUS); /// Flags
    lv_obj_add_event_cb(ui_Dropdown2, dropdown_event_handler, LV_EVENT_ALL, NULL);
}

void display_window()
{
    lv_obj_t *win = lv_win_create(lv_scr_act(), 40);
    assert(win);
    lv_win_add_title(win, "test123!");
}

void display_image()
{
    esp_img_logo = lv_img_create(lv_scr_act());
    lv_img_set_src(esp_img_logo, &esp_logo);
    lv_obj_center(esp_img_logo);
}

void display_red_square()
{
    // ui_Screen1 = lv_obj_create(NULL);
    // lv_obj_clear_flag(ui_Screen1, LV_OBJ_FLAG_SCROLLABLE);      /// Flags

    ui_redsquare = lv_img_create(lv_scr_act());
    lv_img_set_src(ui_redsquare, &red_square);
    lv_obj_set_width(ui_redsquare, LV_SIZE_CONTENT);  /// 1
    lv_obj_set_height(ui_redsquare, LV_SIZE_CONTENT); /// 1
    lv_obj_set_align(ui_redsquare, LV_ALIGN_CENTER);
    lv_obj_add_flag(ui_redsquare, LV_OBJ_FLAG_ADV_HITTEST);  /// Flags
    lv_obj_clear_flag(ui_redsquare, LV_OBJ_FLAG_SCROLLABLE); /// Flags
}

static void slider_event_cb(lv_event_t *e);
static lv_obj_t *slider_label;

void display_slider()
{
    lv_disp_t *dispp = lv_disp_get_default();
    /*Create a slider in the center of the display*/
    lv_obj_t *slider = lv_slider_create(lv_scr_act());
    lv_obj_set_x(slider, 0);
    lv_obj_set_y(slider, -40);
    lv_obj_set_align(slider, LV_ALIGN_CENTER);
    lv_obj_add_event_cb(slider, slider_event_cb, LV_EVENT_VALUE_CHANGED, NULL);

    /*Create a label below the slider*/
    slider_label = lv_label_create(lv_scr_act());
    lv_label_set_text(slider_label, "0%");
    lv_obj_align_to(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
}




static void slider_event_cb(lv_event_t *e)
{
    lv_obj_t *slider = lv_event_get_target(e);
    char buf[8];
    lv_snprintf(buf, sizeof(buf), "%d%%", (int)lv_slider_get_value(slider));
    lv_label_set_text(slider_label, buf);
    lv_obj_align_to(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
}

void get_img_color()
{
    lv_color_t pixel_color = lv_img_buf_get_px_color(&red_square, 50, 50, lv_color_make(0, 0, 0));
    uint32_t c32 = lv_color_to32(pixel_color);
    printf("Pixel color: %lu \n", c32);
}





static void set_value(void *indic, int32_t v)
{
    lv_meter_set_indicator_end_value(meter, indic, v);
}



void display_update_text(char* str)
{
    display_lock(0);
    lv_label_set_text(label, str);
    display_unlock();
}



// make a display task that listens for messages from a queue that change visual elements
uint32_t value = 0;

void display_gui_process(void)
{
    
    display_lock(0);

    set_value(meter_indic1, value);
    
    value = (value + 1) % 100;

    display_unlock();

}