#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <ESP32Servo.h>

const char* ssid = "Wokwi-GUEST";
const int buttonPin = 19;
const int buttonPin2 = 18;
const int trigPin = 14;
const int echoPin = 12;
const uint8_t buttonPins[] = { 19,18,5,17,16 };
const int numTones = sizeof(buttonPins) / sizeof(buttonPins[0]);
//define sound speed in cm/uS
#define SOUND_SPEED 0.034
#define CM_TO_INCH 0.393701
#define SERVER_IP "http://tugas-ku-3934b4f9796f.herokuapp.com/login-iot"

long duration;
float distanceCm;

String key_pass = "";
LiquidCrystal_I2C lcd(0x27, 16, 2);
int countUp = 0;

const int servoPin = 4;
Servo servo;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  servo.attach(servoPin, 500, 2400);
  servo.write(0);
  WiFi.begin(ssid);
  while(WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
  }
  Serial.println("Connecting");
  Serial.println("");
  Serial.print("Connected to WiFi network with IP Address: ");
  Serial.println(WiFi.localIP());

  lcd.init();
  lcd.backlight();
  printLcd("SMART DOOR LOCK",0,0);
  printLcd("SECURITY SYSTEM",0,1);
  delay(3000);
  for (uint8_t i = 0; i < numTones; i++) {
    pinMode(buttonPins[i], INPUT);
  }
  // pinMode(buttonPin, INPUT);
  // pinMode(buttonPin2, INPUT);
  // pinMode(5, INPUT);
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the echoPin as an Input
  lcd.clear();
}

void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  // Calculate the distance
  distanceCm = duration * SOUND_SPEED/2;
  
  if(distanceCm >= 0.0 && distanceCm <= 20){
    countUp += 1;
    if(countUp == 1){
      lcd.backlight();
      printLcd("Welcome",0,0);
      printLcd("Please scan",0,1);
    }
    if(countUp >= 20000){
      hitApi("Trespassed","adminlock");
      countUp = 0;
    }

  for (uint8_t i = 0; i < numTones; i++) {
    if (digitalRead(buttonPins[i]) == 1) {
      Serial.println(i);
      functionMain(i);
      countUp = 0;
    }
  }


  }else{
    countUp = 0;
    lcd.clear();
    lcd.noBacklight();
  }
}

void printLcd(String note, int x, int y){
  lcd.setCursor(x,y);
  lcd.print(note);
}

void printTrespassed(){
  lcd.setCursor(0,0);
  lcd.print("UNAUTHORIZE");
  lcd.setCursor(0,1);
  lcd.print("ANOMALI DETECTED");
  delay(5000);
  lcd.setCursor(0,0);
  lcd.print("UNAUTHORIZE");
  lcd.setCursor(0,1);
  lcd.print("PLEASE WAIT 20S");
  delay(5000);
  lcd.setCursor(0,0);
  lcd.print("UNAUTHORIZE");
  lcd.setCursor(0,1);
  lcd.print("ANOMALI DETECTED");
  delay(5000);
  lcd.setCursor(0,0);
  lcd.print("UNAUTHORIZE");
  lcd.setCursor(0,1);
  lcd.print("PLEASE WAIT 20S");
  delay(5000);
  lcd.clear();
}

void openDoor(){
  servo.write(90);
}

void closeDoor(){
  servo.write(0);
}


void functionMain(int inpt){
  lcd.clear();
  printLcd("Checking...",0,0);
  printLcd("Please wait...",0,1);
  if(inpt == 0){
    hitApi("father123","father");
  }
  else if(inpt == 1){
    hitApi("mother123","mother");
  }
  else if(inpt == 2){
    hitApi("son123","son123");
  }
  else if(inpt == 3){
    hitApi("son12366","son");
  }
  else if(inpt == 4){
    hitApi("key-used","keyauth");
  }
  lcd.clear();
}


void hitApi(String username, String password){
      HTTPClient http;
      WiFiClient client;
      String jsonString = "{\"username\":\""+username+"\",\"password\":\""+password+"\"}";
      Serial.println(jsonString);
      http.begin(client,SERVER_IP);  // HTTP
      http.addHeader("Content-Type", "application/json");

      int Code = http.POST(jsonString);
      String response = http.getString();
      char json[500];
      response.trim();
      response.toCharArray(json , 500);
      JsonDocument doc;
      deserializeJson(doc, json);
      const char* data = doc["data"];
      // JsonDocument doc(1024);
      // JsonDocument error = deserializeJson(doc, response);
      // const char* data = doc["data"];
      // const char* status = doc["success"];
      // Serial.println(json);
      // Serial.println(data);
      Serial.println(Code);
      http.end();
      lcd.clear();

      if(Code == 401){
          printLcd("ID NOT MATCH!",0,0);
          printLcd("Wait for 3sec",0,1);
          delay(3000);
          lcd.clear();
      }
      else if(username == "Trespassed"){
          printTrespassed();
      }
      else if(Code == 200){
          printLcd("SUCCESS!",0,0);
          printLcd("WELCOME ",0,1);
          printLcd(data,8,1);
          openDoor();
          delay(3000);
          closeDoor();
          lcd.clear();
      }
      else{
          printLcd("INET ERROR",0,0);
          printLcd("Scan again",0,1);
          delay(2000);
          lcd.clear();
          printLcd("INET ERROR",0,0);
          printLcd("Or use key",0,1);
          delay(2000);
          lcd.clear();
      }
}