auth.cpp

#include "auth.hpp"

string Authentication::cipher_encryption(string password){
  string cipher;
  for(int i=0; i<password.length(); ++i){
    int result = int(password[i]) + i + 3;
    cipher.push_back(result);
  }
  return cipher;
}
string Authentication::cipher_decryption(string encrypted_password){
  string orignal_password;
  for(int i=0; i<encrypted_password.length(); ++i){
    int result = int(encrypted_password[i]) - i - 3;
    orignal_password.push_back(result);
  }
  return orignal_password;
}
void Authentication::new_user(string username , string password){ 
  sqlite::sqlite db("gameDb.sqlite"); 
  string encrypt_password = cipher_encryption(password);      
  auto cur = db.get_statement();
  cur->set_sql("INSERT INTO 'user_login'" 
   "VALUES (?7, ?8)");
  cur->prepare(); 
  cur->bind(7,username);
  cur->bind(8,encrypt_password);
  cur->step();
  cout<<"New Users Created Sucessfully"<<endl;
  return;
}
bool Authentication::loginValidation(string username , string password){ 
  sqlite::sqlite db("gameDb.sqlite");    
  auto cur1 = db.get_statement();
  cur1->set_sql("SELECT * FROM 'user_login'"); 
  cur1->prepare();
  tuple<string,string>credentials;
  while(cur1->step())
  {
    credentials = make_tuple(cur1->get_text(0),cur1->get_text(1));
  }
  string decrypt_password = cipher_decryption(get<1>(credentials));
  if(username == get<0>(credentials) && password == decrypt_password)
    {cout<<"Correct Credentials"<<endl;return true;}
  else{cout<<"Wrong Credentials"<<endl;return false;} 
}

void Authentication::change_password(string old_username ,string old_password, string new_password){
  bool result = loginValidation(old_username , old_password);
  if (result == true){
    sqlite::sqlite db("gameDb.sqlite");
    string encrypt_password = cipher_encryption(new_password);        
    auto cur = db.get_statement();
    cur->set_sql("UPDATE 'user_login' SET password = (?4)"
      " WHERE username = (?5);");
    cur->prepare(); 
    cur->bind(4,encrypt_password);
    cur->bind(5,old_username);
    cur->step();
    cout<<"New password Created Sucessfully"<<endl;
  }
  else{cout<<"Wrong password please try again With correct password";}
  return;
}

void Authentication::forget_password(string details){
  return;
}


void Authentication::delete_user(string username , string password){
  bool result = loginValidation(username , password);
  if (result == true){
    sqlite::sqlite db("gameDb.sqlite");    
    auto cur = db.get_statement();
    cur->set_sql("DELETE FROM 'user_login' WHERE username = (?6)");
    cur->prepare(); 
    cur->bind(6,username);
    cur->step();
  }
}