/*----------------------------------------------------------------------------
 *  Author: Nelso G. Jost (nelsojost@gmail.com)
 *  License: GPLv2
 *  Purpose: Provide wifi-related utilities.
 *---------------------------------------------------------------------------*/
#include <Arduino.h>
#include "ESP8266WiFi.h"

/*
 *  CREDITS: https://github.com/platformio/platform-espressif8266
 *  https://github.com/esp8266/Arduino/blob/master/libraries/ESP8266WiFi/examples/WiFiScan/WiFiScan.ino
 */
void wifiscan(void)
{
    Serial.println();
    Serial.print("Scanning wifi networks...");
    Serial.flush();

    int n = WiFi.scanNetworks();

    Serial.println(" done!\n");
    Serial.flush();
    if (n == 0)
    {
        Serial.println("no networks found");
    }
    else
    {
        Serial.print(n);
        Serial.println(" networks found:");
        Serial.println("-------------------------");
        for (int i = 0; i < n; ++i)
        {
            Serial.print(i + 1);
            Serial.print(": ");
            Serial.print(WiFi.SSID(i));
            Serial.print(" (");
            Serial.print(WiFi.RSSI(i));
            Serial.print(")");
            Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE)?" ":"*");
            delay(10);
        }
    }
}


void wifistatus(void)
{
    WiFi.printDiag(Serial);
}


void wificonnect(String ssid, String password, int threshold)
{
    int t=0;
    WiFi.begin(ssid.c_str(), password.c_str());
    Serial.print("\nConnecting");
    while (WiFi.status() != WL_CONNECTED and t <= threshold)
    {
        delay(500);
        Serial.print(".");
        t += 500;
    }
    if (WiFi.status() == WL_CONNECTED)
    {
        Serial.print("\nConnected, IP address: ");
        Serial.println(WiFi.localIP());
    }
    else
    {
        Serial.print("\nUnable to connect!");
    }
}