#include "NetManager.h"

// ── WiFi ────────────────────────────────────────────────────

void NetManager::begin(const WiFiCred* creds, int count) {
    WiFi.mode(WIFI_STA);
    for(int i = 0; i < count; i++)
        _multi.addAP(creds[i].ssid, creds[i].pass);

    Serial.println("[WIFI] Connecting...");
    unsigned long t0 = millis();
    while(_multi.run() != WL_CONNECTED) {
        if(millis() - t0 > WIFI_CONNECT_TIMEOUT_MS) {
            Serial.println("[WIFI] Timeout!");
            return;
        }
        delay(250);
    }
    Serial.printf("[WIFI] Connected: %s %s\n", getSSID().c_str(), getIP().c_str());
}

bool NetManager::checkConnection() {
    if(WiFi.status() == WL_CONNECTED)
        return true;
    Serial.println("[WIFI] Reconnecting...");
    return _multi.run(WIFI_CONNECT_TIMEOUT_MS) == WL_CONNECTED;
}

bool NetManager::isConnected() { return WiFi.status() == WL_CONNECTED; }
String NetManager::getSSID() { return WiFi.SSID(); }
String NetManager::getIP() { return WiFi.localIP().toString(); }
int NetManager::getRSSI() { return WiFi.RSSI(); }

// ── NTP ─────────────────────────────────────────────────────

bool NetManager::syncNTP() {
    Serial.println("[NTP] Starting sync...");
    if(!_ntp)
        _ntp = new NTPClient(_udp, "pool.ntp.org", 0, 60000);
    _ntp->begin();
    _ntp->forceUpdate();
    _ntpReady = _ntp->isTimeSet();
    Serial.printf("[NTP] %s: %s UTC\n", _ntpReady ? "Synced" : "FAILED",
        _ntpReady ? _ntp->getFormattedTime().c_str() : "--");
    return _ntpReady;
}

String NetManager::getTimeStr() {
    return (_ntp && _ntpReady) ? _ntp->getFormattedTime() : "??:??:??";
}

// ── Diagnostics ─────────────────────────────────────────────

bool NetManager::dnsCheck(const char* host) {
    IPAddress ip;
    bool ok = WiFi.hostByName(host, ip);
    Serial.printf("[NET] DNS %s: %s\n", ok ? "OK" : "FAIL", ok ? ip.toString().c_str() : "");
    return ok;
}

bool NetManager::tlsCheck(const char* host) {
    WiFiClientSecure c;
    c.setInsecure();
    c.setTimeout(HTTP_TIMEOUT_MS);
    bool ok = c.connect(host, 443);
    if(ok)
        c.stop();
    Serial.printf("[NET] TLS %s\n", ok ? "OK" : "FAIL");
    return ok;
}

// ── HTTP helpers ────────────────────────────────────────────

int NetManager::httpGet(const char* url, String& response) {
    WiFiClientSecure client;
    client.setInsecure();
    client.setTimeout(HTTP_TIMEOUT_MS);

    HTTPClient http;
    http.setTimeout(HTTP_TIMEOUT_MS);
    http.begin(client, url);

    int code = http.GET();
    if(code > 0)
        response = http.getString();
    http.end();
    return code;
}

int NetManager::httpPost(const char* url, const String& body) {
    WiFiClientSecure client;
    client.setInsecure();
    client.setTimeout(HTTP_TIMEOUT_MS);

    HTTPClient http;
    http.setTimeout(HTTP_TIMEOUT_MS);
    http.begin(client, url);
    http.addHeader("Content-Type", "text/plain");

    int code = http.POST(body);
    http.end();
    return code;
}