#include "esp_check.h"
#include "esp_log.h"
#include "esp_lvgl_port.h"
#include "lcd/lcd.h"
#include "sd/sd.h"
#include "lvgl.h"

static const char *TAG = "app";
static lv_obj_t *log_textarea = NULL;

static void ui_log_append(const char *text)
{
    if(log_textarea == NULL || text == NULL) return;

    lvgl_port_lock(0);
    lv_textarea_add_text(log_textarea, text);
    lv_textarea_add_text(log_textarea, "\n");
    lv_textarea_set_cursor_pos(log_textarea, LV_TEXTAREA_CURSOR_LAST);
    lvgl_port_unlock();
}

static void create_log_ui(void)
{
    lv_obj_t *screen = lv_screen_active();
    lv_obj_set_style_bg_color(screen, lv_color_hex(0x101418), 0);

    lv_obj_t *title = lv_label_create(screen);
    lv_label_set_text(title, "SD Image Viewer");
    lv_obj_set_style_text_color(title, lv_color_white(), 0);
    lv_obj_align(title, LV_ALIGN_TOP_MID, 0, 14);

    log_textarea = lv_textarea_create(screen);
    lv_obj_set_size(log_textarea, lv_pct(92), lv_pct(84));
    lv_obj_align(log_textarea, LV_ALIGN_BOTTOM_MID, 0, -14);
    lv_textarea_set_one_line(log_textarea, false);
    lv_textarea_set_cursor_click_pos(log_textarea, false);
    lv_textarea_set_text(log_textarea, "");
    lv_obj_set_style_bg_color(log_textarea, lv_color_hex(0x182028), 0);
    lv_obj_set_style_text_color(log_textarea, lv_color_hex(0xdde7ef), 0);
    lv_obj_set_style_border_color(log_textarea, lv_color_hex(0x4b6478), 0);
    lv_obj_set_style_radius(log_textarea, 4, 0);
    lv_obj_set_style_pad_all(log_textarea, 12, 0);

    lv_textarea_add_text(log_textarea, "Boot UI ready\n");
    lv_textarea_set_cursor_pos(log_textarea, LV_TEXTAREA_CURSOR_LAST);
}

void app_main(void)
{
    ESP_LOGI(TAG, "Start display application");
    ESP_ERROR_CHECK(lcd_init());

    ESP_LOGI(TAG, "Creating log UI");
    lvgl_port_lock(0);
    create_log_ui();
    lvgl_port_unlock();

    ESP_LOGI(TAG, "Initializing SD card");
    ui_log_append("Initializing SD card...");
    sd_init();
    print_sd_card_info();
    ui_log_append("SD initialization done");
    ESP_LOGI(TAG, "SD card initialization complete");

    size_t file_count = sd_get_file_count();
    ESP_LOGI(TAG, "Found %d files in root directory", file_count);
    const char* filename = NULL;
    
    while(file_count-- > 0 && (filename = sd_get_next_file()) != NULL){
        ESP_LOGI(TAG, "Found file: %s", filename);
        char line[96];
        snprintf(line, sizeof(line), "Found file: %s", filename);
        ui_log_append(line);
    }

    /*
    FILE* file = sd_open_write("test.txt");
    if(file != NULL){
        fprintf(file, "Hello, SD card!\n");
        sd_close_file(file);
        ui_log_append("Wrote test.txt");
    } else {
        ui_log_append("Failed to open test.txt for writing");
    }
    */

    sd_destroy();
    ui_log_append("SD card unmounted");
}