#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "esp_log.h"
#include "lwip/err.h"
#include "lwip/sys.h"
#include "nvs_flash.h"
#include "nvs.h"
#include "esp_check.h"
#include "esp_memory_utils.h"
#include "lvgl.h"
#include "bsp/esp-bsp.h"
#include "bsp/display.h"
#include "secrets.h"

/* FreeRTOS event group to signal when we are connected*/
static EventGroupHandle_t s_wifi_event_group;

/* The event group allows multiple bits for each event, but we only care about two events:
 * - we are connected to the AP with an IP
 * - we failed to connect after the maximum amount of retries */
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT      BIT1

static EventGroupHandle_t s_wifi_event_group;

static const char *TAG = "wifi station";

static int s_retry_num = 0;


static void event_handler(void* arg, esp_event_base_t event_base,
                                int32_t event_id, void* event_data)
{
    if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
        esp_wifi_connect();
    } else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
        if (s_retry_num < 10000) {
            esp_wifi_connect();
            s_retry_num++;
            ESP_LOGI(TAG, "retry to connect to the AP");
        } else {
            xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
        }
        ESP_LOGI(TAG,"connect to the AP fail");
    } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
        ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
        ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
        s_retry_num = 0;
        xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
    }
}

void wifi_init_sta(void)
{
    s_wifi_event_group = xEventGroupCreate();

    ESP_ERROR_CHECK(esp_netif_init());

    ESP_ERROR_CHECK(esp_event_loop_create_default());
    esp_netif_create_default_wifi_sta();

    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
    ESP_ERROR_CHECK(esp_wifi_init(&cfg));

    esp_event_handler_instance_t instance_any_id;
    esp_event_handler_instance_t instance_got_ip;
    ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
                                                        ESP_EVENT_ANY_ID,
                                                        &event_handler,
                                                        NULL,
                                                        &instance_any_id));
    ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
                                                        IP_EVENT_STA_GOT_IP,
                                                        &event_handler,
                                                        NULL,
                                                        &instance_got_ip));


    wifi_config_t wifi_config = {
        .sta = {
            .ssid = WIFI_SSID,
            .password = WIFI_PASS,
            /* Authmode threshold resets to WPA2 as default if password matches WPA2 standards (password len => 8).
             * If you want to connect the device to deprecated WEP/WPA networks, Please set the threshold value
             * to WIFI_AUTH_WEP/WIFI_AUTH_WPA_PSK and set the password with length and format matching to
             * WIFI_AUTH_WEP/WIFI_AUTH_WPA_PSK standards.
             */
            .threshold.authmode = WIFI_AUTH_OPEN,
            //.sae_pwe_h2e = WPA3_SAE_PWE_BOTH,
            //.sae_h2e_identifier = CONFIG_ESP_WIFI_PW_ID,
	    //            .disable_wpa3_compatible_mode = 0,
        },
    };
    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
    ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
    ESP_ERROR_CHECK(esp_wifi_start() );

    ESP_LOGI(TAG, "wifi_init_sta finished.");

    /* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or connection failed for the maximum
     * number of re-tries (WIFI_FAIL_BIT). The bits are set by event_handler() (see above) */
    EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
            WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
            pdFALSE,
            pdFALSE,
            portMAX_DELAY);

    /* xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually
     * happened. */
    if (bits & WIFI_CONNECTED_BIT) {
        ESP_LOGI(TAG, "connected to ap SSID:%s password:%s",
                 WIFI_SSID, WIFI_PASS);
    } else if (bits & WIFI_FAIL_BIT) {
        ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s",
                 WIFI_SSID, WIFI_PASS);
    } else {
        ESP_LOGE(TAG, "UNEXPECTED EVENT");
    }
}


static const lv_font_t * font_large;
static lv_style_t style_bw;

void app_main(void)
{

  //Initialize NVS
  esp_err_t ret = nvs_flash_init();
  if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
    ESP_ERROR_CHECK(nvs_flash_erase());
    ret = nvs_flash_init();
  }
  ESP_ERROR_CHECK(ret);
  


  ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
  wifi_init_sta();
  
    bsp_display_start();

    bsp_display_lock(100);

    bsp_display_brightness_set(20);

    font_large     = &lv_font_montserrat_18;

    lv_style_init(&style_bw);
    //lv_style_set_text_font(&style_bw, font_large);
    lv_style_set_bg_color(&style_bw, lv_color_hex(0x000000));
    lv_style_set_text_color(&style_bw, lv_color_hex(0xffffff));
    lv_style_set_radius(&style_bw, 0);
    lv_obj_add_style(lv_screen_active(), &style_bw, LV_PART_MAIN);

    /*
    lv_obj_t * cont = lv_obj_create(lv_screen_active());
    lv_obj_add_style(cont, &style_bw, LV_PART_MAIN);
    lv_obj_set_style_border_width(cont, 0, LV_PART_MAIN);
    lv_obj_set_size(cont, lv_pct(100), lv_pct(100));
    lv_obj_center(cont);
    lv_obj_set_flex_flow(cont, LV_FLEX_FLOW_COLUMN);
    */
    
    lv_obj_t * title = lv_label_create(lv_screen_active());
    lv_obj_add_style(title, &style_bw, LV_PART_MAIN);
    lv_label_set_text(title, "freeside minimap");
    lv_obj_set_align(title, LV_ALIGN_TOP_MID);

    lv_obj_t * text = lv_textarea_create(lv_screen_active());
    lv_obj_add_style(text, &style_bw, LV_PART_MAIN);
    lv_obj_set_pos(text, 50, 25);
    lv_textarea_add_text(text, "hello");
    lv_textarea_add_text(text, "world!");
    lv_textarea_add_text(text, "\nnewline");

    
    
    bsp_display_unlock();
}