#include "freertos/FreeRTOS.h"
#include "freertos/event_groups.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include "main.hpp"
#include "wifi-credentials.h"

static const char* TAG = "WIFI";

EventGroupHandle_t wifi_event_group;
const int WIFI_CONNECTED_BIT = BIT0;

static void wifi_event_handler(void* arg, esp_event_base_t event_base, int32_t event_id, void* event_data) {
    if (event_base == WIFI_EVENT) {
        switch(event_id) {
            case WIFI_EVENT_STA_START:
                esp_wifi_connect();
                break;
            case WIFI_EVENT_STA_DISCONNECTED:
                esp_wifi_connect();
                xEventGroupClearBits(wifi_event_group, WIFI_CONNECTED_BIT);
                break;
        }
    }
    else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) xEventGroupSetBits(wifi_event_group, WIFI_CONNECTED_BIT);
}

void wifi_init_sta(void) {
    esp_err_t nvs_err = nvs_flash_init();

    if (nvs_err == ESP_ERR_NVS_NO_FREE_PAGES || nvs_err == ESP_ERR_NVS_NEW_VERSION_FOUND) {
        ESP_ERROR_CHECK(nvs_flash_erase());
        ESP_ERROR_CHECK(nvs_flash_init());
    }

    wifi_event_group = xEventGroupCreate();

    ESP_ERROR_CHECK(esp_netif_init());
    esp_netif_create_default_wifi_sta();

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

    ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &wifi_event_handler, NULL, NULL));
    ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &wifi_event_handler, NULL, NULL));

    wifi_config_t wifi_config = {
        .sta = {
            .ssid = "SSID",
            .password = "PASSWORD",
            .threshold.authmode = "AUTHMODE",
            .pmf_cfg = { .capable = true, .required = false },
        },
    };

    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());
}

void wifiTask(void *pvParameters) {
    ESP_LOGI(TAG, "WiFi task started");
    ESP_ERROR_CHECK(esp_task_wdt_add(NULL));

    wifiManager();

    for(;;) {
        esp_task_wdt_reset();
        vTaskDelay(pdMS_TO_TICKS(2500));
    }
}