#include <WiFi.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#inclue <http-server.ino>
int lcdRows=2;int lcdCols=16;
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, lcdCols, lcdRows);
const char* ssid="Wokwi-GUEST";
const char* password="";
void setup() {
  Serial.begin(115200);
  Serial.println("! ESP32 ! online");
  LCD.init();
  LCD.backlight();
  initalize();
  wifi_scan();
  wifi_connect("Wokwi-GUEST", "");
}

void loop() {
  
  delay(10);
}

void initalize(){
  LCD.setCursor(3, 0);
  LCD.print("LCD online");
  delay(500);
  LCD.clear();
  LCD.print("Initializing");
  LCD.setCursor(0,1);
  for (int i=0; i<5; i++){
    delay(200);
    LCD.print('.');
  }
  LCD.clear();
  LCD.setCursor(3,0);
  LCD.print("..ONLINE..");
  delay(500);
  LCD.clear();
}

void wifi_scan(){
  LCD.setCursor(2,0);
  LCD.print("! WIFI MOD !");
  LCD.setCursor(4,1);
  LCD.print("Scanning");
  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  delay(100);
  LCD.clear();
  int n = WiFi.scanNetworks();
  Serial.println("scan done");
  LCD.setCursor(0,1);
  LCD.print("Scan Done.");
  delay(500);
  LCD.clear();
  if (n == 0) {
  LCD.setCursor(3,1);
    LCD.print("no networks");
      Serial.println("no networks found");
  } else {
    Serial.print(n);
  LCD.setCursor(2,1);
    LCD.print(n);
  LCD.setCursor(4,1);
    LCD.print("wifi found");
    Serial.println(" networks found");
    for (int j = 0; j < n; ++j) {
      Serial.print(j + 1);
      Serial.print(": ");
      Serial.print(WiFi.SSID(j));
      Serial.print(" (");
      Serial.print(WiFi.RSSI(j));
      Serial.print(")");
      Serial.println((WiFi.encryptionType(j) == WIFI_AUTH_OPEN)?" ":"*");
      delay(10);
    }delay(200);
  }
  Serial.println("");
  delay(5000);
}

void wifi_connect(String wifi_ssid,String wifi_pswd){
  WiFi.begin(wifi_ssid, wifi_pswd);
  LCD.clear();
  LCD.setCursor(0,0);
  LCD.print("Connected to");
  delay(500);
  Serial.print("Connecting to WiFi ..");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print('.');
    delay(1000);
  }
  LCD.clear();
  LCD.setCursor(0,0);
  delay(500);
  LCD.print(wifi_ssid);
  // LCD.setCursor(0,1);
  LCD.setCursor(0,0);
  // delay(500);
  LCD.print(wifi_ssid);
  LCD.setCursor(0,1);
  LCD.print("[IP] ");
  LCD.setCursor(5,1);
  LCD.print(WiFi.localIP());
delay(1000);
LCD.clear();
}