#include <stdio.h>
#include "pico/stdlib.h"
#include "pico/cyw43_arch.h"
#include "lwip/netif.h"
#include "lwip/ip4_addr.h"

// ⚠️ Đổi SSID/PASS cho WiFi Wokwi
#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASS ""

int main() {
    stdio_init_all();

    if (cyw43_arch_init()) {
        printf("WiFi init failed!\n");
        return -1;
    }

    cyw43_arch_enable_sta_mode();

    printf("Connecting to WiFi SSID: %s\n", WIFI_SSID);

    int result = cyw43_arch_wifi_connect_timeout_ms(WIFI_SSID, WIFI_PASS,
                                                    CYW43_AUTH_WPA2_AES_PSK, 30000);
    if (result != 0) {
        printf("Failed to connect. Error code: %d\n", result);
        return -1;
    }

    printf("Connected to WiFi!\n");

    // Lấy IP đã cấp
    while (true) {
        const ip4_addr_t *addr = netif_ip4_addr(netif_list);
        if (!ip4_addr_isany_val(*addr)) {
            printf("Got IP: %s\n", ip4addr_ntoa(addr));
            break;
        }
        sleep_ms(500);
    }

    // Loop chính
    while (true) {
        printf("WiFi alive, RSSI=%d dBm\n", cyw43_wifi_get_rssi(&cyw43_state, CYW43_ITF_STA));
        sleep_ms(5000);
    }

    cyw43_arch_deinit();
    return 0;
}