#include <Keypad.h> // the library for the 4x4 keypad
#include <LiquidCrystal_I2C.h> // the library for the i2c 1602 lcd
//#include <Servo.h> // the library to control the servo motor
#include <ESP32Servo.h>
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <UniversalTelegramBot.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); // gets the lcd 
Servo servo;

#define Password_Length 5 // the length of the password, if the password is 4 digits long set this to 5
int Position = 0; // position of the servo
char Particular[Password_Length]; // the password length 
char Specific[Password_Length] = "1234"; // the password which is called specific in the code, change this to anything you want with the numbers 0-9 and the letters A-D
byte Particular_Count = 0, Specific_Count = 0; // counts the amount of digits and and checks to see if the password is correct
char Key; 
const byte ROWS = 4; // the amount of rows on the keypad
const byte COLS = 4; // the amount of columns on the keypad
char keys[ROWS][COLS] = { // sets the rowns and columns
  // sets the keypad digits
  {'1','2','3','A'}, 

  {'4','5','6','B'},

  {'7','8','9','C'},

  {'*','0','#','D'}
};
bool SmartDoor = true; // the servo 
// the pins to plug the keypad into
byte rowPins[ROWS] = {13, 12, 14, 27};
byte colPins[COLS] = {26,25, 33, 32};
Keypad myKeypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS); // gets the data from the keypad

// locked charcater
byte Locked[8] = { 
  B01110,
  B10001,
  B10001,
  B11111,
  B11011,
  B11011,
  B11011,
  B11111
};
// open character
byte Opened[8] = {
  B01110,
  B00001,
  B00001,
  B11111,
  B11011,
  B11011,
  B11011,
  B11111
};
int pinLedVert=15;
int pinLedRouge=2;
//////////////////////////////////////////
// Replace with your network credentials
const char* ssid = "Redmi 10C";
const char* password = "123456789";

// Use @myidbot to find out the chat ID of an individual or a group
// You need to click "start" on a bot before it can message you 
// Initialize Telegram BOT
String chatId = "5961859310";
String BOTtoken = "5863902890:AAGT50N0TEenE3g34BcVv56z-mPE_8-YGoQ";

WiFiClientSecure clientTCP;
UniversalTelegramBot bot(BOTtoken, clientTCP);

// Define GPIOs
//#define BUTTON 13
//#define LOCK 12

int lockState = 0;
String r_msg = "";
 
const unsigned long BOT_MTBS = 1000; // mean time between scan messages
unsigned long bot_lasttime; // last time messages' scan has been done
void handleNewMessages(int numNewMessages);

void setup()
{
  pinMode(pinLedVert, OUTPUT);
  pinMode(pinLedRouge, OUTPUT);
  Serial.begin(115200);
  servo.attach(18); // attaches the servo to pin 18
  ServoClose(); // closes the servo when you say this function
  lcd.init(); // initializes the lcd 
  lcd.backlight(); // turns on the backlight
///////////
  WiFi.mode(WIFI_STA);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);  
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println();
  Serial.print("ESP32-CAM IP Address: ");
  Serial.println(WiFi.localIP());
}

String ServoOpen() // opens the servo
{
  for (Position = 180; Position >= 0; Position -= 5) { // moves from 0 to 180 degrees
    servo.write(Position); // moves to the postion
    delay(15); // waits 15 milliseconds
    return "Door Unlocked. /lock";
  }
}

String ServoClose() // closes the servo
{
  for (Position = 0; Position <= 180; Position += 5) { // moves from position 0 to 180 degrees
    servo.write(Position); // moves to the position
    delay(15); // waits 15 milliseconds
    return "Door Locked. /unlock";
  }
}

void handleNewMessages(int numNewMessages){
  Serial.print("Handle New Messages: ");
  Serial.println(numNewMessages);

  for (int i = 0; i < numNewMessages; i++){
    // Chat id of the requester
    String chat_id = String(bot.messages[i].chat_id);
    if (chat_id != chatId){
      bot.sendMessage(chat_id, "Unauthorized user", "");
      continue;
    }
    
    // Print the received message
    String text = bot.messages[i].text;
    Serial.println(text);

    String fromName = bot.messages[i].from_name;
   
    if (text == "/lock"){
      String r_msg = ServoClose();
      bot.sendMessage(chatId, r_msg, "");
    }
    if (text == "/unlock"){
      String r_msg = ServoOpen();
      bot.sendMessage(chatId, r_msg, "");
    }
    if (text == "/start"){
      String welcome = "Welcome to the ESP32-CAM Telegram Smart Lock.\n";
      welcome += "/photo : Takes a new photo\n";
      welcome += "/unlock : Unlock the Door\n\n";
      welcome += "/lock : Lock the Door\n";
      welcome += "To get the photo please tap on /photo.\n";
      bot.sendMessage(chatId, welcome, "Markdown");
    }
  }
}
/*
void setup()
{
  pinMode(pinLedVert, OUTPUT);
  pinMode(pinLedRouge, OUTPUT);
  Serial.begin(115200);
  servo.attach(18); // attaches the servo to pin 18
  ServoClose(); // closes the servo when you say this function
  lcd.init(); // initializes the lcd 
  lcd.backlight(); // turns on the backlight
///////////
  WiFi.mode(WIFI_STA);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);  
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println();
  Serial.print("ESP32-CAM IP Address: ");
  Serial.println(WiFi.localIP());
}
*/
void loop()
{

  if (SmartDoor == 0) // opens the smart door
  {
    Key = myKeypad.getKey(); // the word key = myKeypad which gets the value

    if (Key == '#') // when the '#' key is pressed

    {
      lcd.clear(); // clears the lcd diplay
      ServoClose(); // closes the servo motor
      lcd.setCursor(2,0); // sets the cursor on the lcd
      lcd.print("Door Closed"); // prints the text to the lcd
      lcd.createChar(0, Locked); // prints the locked character 
      lcd.setCursor(14,0); // sets the cursor on the lcd
      digitalWrite(pinLedVert, LOW);
      lcd.write(0); // prints the first character when you are on the door closed page
      delay(3000); // waits 3 seconds
      SmartDoor = 1; // closes the door
    }
  }

  else Open(); // keeps the door open
    
}

void clearData() // clears the data
{
  while (Particular_Count != 0) // counts the digits pressed
  {
    Particular[Particular_Count--] = 0; // counts how many digits
  }
  return; // returns the data
}
/*
void ServoOpen() // opens the servo
{
  for (Position = 180; Position >= 0; Position -= 5) { // moves from 0 to 180 degrees
    servo.write(Position); // moves to the postion
    delay(15); // waits 15 milliseconds
  }
}

void ServoClose() // closes the servo
{
  for (Position = 0; Position <= 180; Position += 5) { // moves from position 0 to 180 degrees
    servo.write(Position); // moves to the position
    delay(15); // waits 15 milliseconds
  }
}
*/
void Open() // function declarations
{
  lcd.setCursor(1,0); // sets the cursor on the lcd
  lcd.print("Enter Password:"); // prints the text
  
  Key = myKeypad.getKey(); // gets the keys you press from the keypad
  if (Key)
  {
    Particular[Particular_Count] = Key; 
    lcd.setCursor(Particular_Count, 1); // sets the cursor on the lcd
    lcd.print("*"); // prints '*' instead of the password
    Particular_Count++; // counts the length of the password
    digitalWrite(pinLedVert, LOW);
    digitalWrite(pinLedRouge, LOW);
  }

  if (Particular_Count == Password_Length - 1) // gets the length of the password 
  {
    if (!strcmp(Particular, Specific)) // counts the length and checks to see if the password is correct
    {
      lcd.clear();
      ServoOpen(); // moves the servo 180 degrees
      lcd.setCursor(2,0); // sets the cursor on the lcd
      lcd.print("Door Opened");
      Serial.println("Accès autorisé");
      digitalWrite(pinLedVert, HIGH);

     // lcd.createChar(1, Opened);
      lcd.setCursor(14,0); // sets the cursor on the lcd
      lcd.write(1);
      lcd.setCursor(0,1); // sets the cursor on the lcd
      lcd.print("Press # to Close");
      SmartDoor = 0;
    }
    else
    {
      lcd.clear();
      lcd.setCursor(0,0); // sets the cursor on the lcd
      lcd.print("Wrong Password"); // prints the text/character
      lcd.setCursor(0,1);
      Serial.println("Accès refusé");
      digitalWrite(pinLedRouge, HIGH);
      lcd.print("Try Again In");
      lcd.setCursor(13,1);
       delay(1000);
      lcd.clear();
      SmartDoor = 1; // closes the smart door
    }
    clearData(); // clears the data
  }
}





/*
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include "soc/soc.h"
#include "soc/rtc_cntl_reg.h"
#include "esp_camera.h"
#include <UniversalTelegramBot.h>
#include <ArduinoJson.h>

// Replace with your network credentials
const char* ssid = "WiFi Name";
const char* password = "WiFi Password";

// Use @myidbot to find out the chat ID of an individual or a group
// You need to click "start" on a bot before it can message you 
// Initialize Telegram BOT
String chatId = "XXXXXXXXXX";
String BOTtoken = "XXXXXXXXXX:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";

bool sendPhoto = false;

WiFiClientSecure clientTCP;

UniversalTelegramBot bot(BOTtoken, clientTCP);

// Define GPIOs
#define BUTTON 13
#define LOCK 12


int lockState = 0;
String r_msg = "";
 
const unsigned long BOT_MTBS = 1000; // mean time between scan messages
unsigned long bot_lasttime; // last time messages' scan has been done

void handleNewMessages(int numNewMessages);
String sendPhotoTelegram();

String unlockDoor(){  
 if (lockState == 0) {
  digitalWrite(LOCK, HIGH);
  lockState = 1;
  delay(100);
  return "Door Unlocked. /lock";
 }
 else{
  return "Door Already Unlocked. /lock";
 }  
}

String lockDoor(){
 if (lockState == 1) {
  digitalWrite(LOCK, LOW);
  lockState = 0;
  delay(100);
  return "Door Locked. /unlock";
 }
 else{
  return "Door Already Locked. /unlock";
 }
}


void handleNewMessages(int numNewMessages){
  Serial.print("Handle New Messages: ");
  Serial.println(numNewMessages);

  for (int i = 0; i < numNewMessages; i++){
    // Chat id of the requester
    String chat_id = String(bot.messages[i].chat_id);
    if (chat_id != chatId){
      bot.sendMessage(chat_id, "Unauthorized user", "");
      continue;
    }
    
    // Print the received message
    String text = bot.messages[i].text;
    Serial.println(text);

    String fromName = bot.messages[i].from_name;
   
    if (text == "/lock"){
      String r_msg = lockDoor();
      bot.sendMessage(chatId, r_msg, "");
    }
    if (text == "/unlock"){
      String r_msg = unlockDoor();
      bot.sendMessage(chatId, r_msg, "");
    }
    if (text == "/start"){
      String welcome = "Welcome to the ESP32-CAM Telegram Smart Lock.\n";
      welcome += "/photo : Takes a new photo\n";
      welcome += "/unlock : Unlock the Door\n\n";
      welcome += "/lock : Lock the Door\n";
      welcome += "To get the photo please tap on /photo.\n";
      bot.sendMessage(chatId, welcome, "Markdown");
    }
  }
}

void setup(){
  Serial.begin(115200);

  pinMode(LOCK,OUTPUT); 
  digitalWrite(LOCK, LOW);
  
  WiFi.mode(WIFI_STA);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);  
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println();
  Serial.print("ESP32-CAM IP Address: ");
  Serial.println(WiFi.localIP());

}

void loop(){
    
  if (millis() - bot_lasttime > BOT_MTBS)
  {
    int numNewMessages = bot.getUpdates(bot.last_message_received + 1);

    while (numNewMessages)
    {
      Serial.println("got response");
      handleNewMessages(numNewMessages);
      numNewMessages = bot.getUpdates(bot.last_message_received + 1);
    }
    bot_lasttime = millis();
  }
}
*/