#include "sdkconfig.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "nvs_flash.h"
#include "lwip/err.h"
#include "lwip/sys.h"

#define CHRONOLOG_REMOTE_ENABLE 1
#include "ChronoLog.h"

// WiFi credentials
#define WIFI_SSID      "YourSSID"
#define WIFI_PASS      "YourPassword"
#define WIFI_MAXIMUM_RETRY  5

static EventGroupHandle_t s_wifi_event_group;
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT      BIT1

static int s_retry_num = 0;
static ChronoLogger networkLogger("Network", CHRONOLOG_LEVEL_DEBUG);
static ChronoLogger sensorLogger("Sensors", CHRONOLOG_LEVEL_DEBUG);

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 < WIFI_MAXIMUM_RETRY) {
            esp_wifi_connect();
            s_retry_num++;
            networkLogger.warn("Retrying WiFi connection... (%d/%d)", s_retry_num, WIFI_MAXIMUM_RETRY);
        } else {
            xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
            networkLogger.error("WiFi Connection failed after %d attempts", WIFI_MAXIMUM_RETRY);
        }
    } 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;
        networkLogger.info("Got IP Address: " IPSTR, IP2STR(&event->ip_info.ip));
        s_retry_num = 0;
        xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
        
        // Start remote logging server after getting IP
        ChronoLogRemote::getInstance()->start(9999);
        networkLogger.info("Remote logging server started on port 9999");
        networkLogger.info("Connect using: nc %d.%d.%d.%d 9999", 
            IP2STR(&event->ip_info.ip));
    }
}

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,
        },
    };
    
    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());

    networkLogger.info("WiFi initialization complete");
}

extern "C" 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);

    networkLogger.info("Starting WiFi connection...");
    wifi_init_sta();
    
    // Main loop - simulate some sensor readings
    while(1) {
        sensorLogger.debug("Temperature reading: 25.6°C");
        networkLogger.info("Network status: Connected");
        networkLogger.warn("High latency detected: 150ms");
        
        vTaskDelay(pdMS_TO_TICKS(2000));
    }
}