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logger , watch own questions and edit #31

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a23c1de
Todo and Todo1 are done
NeginAryapour Oct 27, 2018
760149d
Todo 3 and Todo 2 are done
NeginAryapour Oct 27, 2018
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244 changes: 149 additions & 95 deletions main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -11,164 +11,218 @@ using namespace std;
* Good luck!
**/

enum UserType{
enum UserType
{
ADMIN,
MEMBER
};

class UserNotFoundException : public exception {
public:
const char * what() {
return "couldn't login with given credentials.";
}
};

class UserAlreadyExistsException : public exception {
public:
const char * what() {
return "Error: username already exists";
}

class UserAlreadyExistsException{}; //TODO: Give exceptions a better structure. search google (optional)
}; //TODO: Give exceptions a better structure. search google (optional)

class AbstractUser{ // User structure
public:
class AbstractUser
{ // User structure
public:
virtual bool authenticate(string username, string password) = 0;
virtual bool deleteAccount(vector<AbstractUser*> *users) = 0; //TODO: 1. implement this in User class. (You can't compile code and create instance of User until then). DON'T TOUCH ABSTRACT USER!
virtual bool deleteAccount(vector<AbstractUser *> *users) = 0; //TODO: 1. implement this in User class. (You can't compile code and create instance of User until then). DON'T TOUCH ABSTRACT USER!
string username;
protected:

protected:
string password;
UserType type;
};


class User : public AbstractUser{
public:

User(string username, string password, UserType type){
class User : public AbstractUser
{
public:
User(string username, string password, UserType type)
{
this->username = username;
this->password = password;
this->type = type;
}

bool authenticate(string username, string password){
bool authenticate(string username, string password)
{
return this->username == username && this->password == password;
}

static User* login(vector<AbstractUser*> *users, string username, string password){ //TODO: 2. handle user login errors with exceptions
for(auto user = users->begin(); user != users->end(); user++){
if((*user)->authenticate(username, password)){
return (User*) *user;
static User *login(vector<AbstractUser *> *users, string username, string password)
{ //TODO: 2. handle user login errors with exceptions
for (auto user = users->begin(); user != users->end(); user++)
{
if ((*user)->authenticate(username, password))
{
return (User *)*user;
}
}
UserNotFoundException ex;
throw ex;
return nullptr;
}

static void signup(vector<AbstractUser*> *users, string username, string password){
static void signup(vector<AbstractUser *> *users, string username, string password)
{

//Check if user with that username exists and throw UserAlreadyExistsException in that case
for(auto user = users->begin(); user != users->end(); user++) { //TODO: 3. this doesn't work. fix it!!
if ((*user)->username == username) {
for (auto user = users->begin(); user != users->end(); user++)
{ //TODO: 3. this doesn't work. fix it!!
if ((*user)->username == username)
{
UserAlreadyExistsException ex;
throw ex;
}
}

//Create user and add it to vector
users->push_back(new User(username, password, UserType::MEMBER));
}

string username;
virtual bool deleteAccount(vector<AbstractUser *> *users){
for (auto user = users->begin(); user != users->end(); user++)
{
if (this->username == (*user)->username)
{
users->erase(user);
return true;
}
}

return false;

}
// string username;
};

enum MenuState{
enum MenuState
{
START,
LOGGED_IN,
END
};

class AppDatabase { //Just holds runtime data. doesn't save anything
public:
class AppDatabase
{ //Just holds runtime data. doesn't save anything
public:
vector<AbstractUser *> appUsers;

AppDatabase() { //Load initial data
AppDatabase()
{ //Load initial data
appUsers.push_back(new User("admin",
"admin" /* password is unsafe! for test only */,
UserType::ADMIN)
);
UserType::ADMIN));
}
};

int main(){
User * loggedInUser = nullptr;
int main()
{
User *loggedInUser = nullptr;
AppDatabase appDatabase;
MenuState menuState = MenuState::START;

char choice;
cout << "Welcome!" << endl;

while(menuState != MenuState::END){
switch (menuState){
case MenuState::START: {

cout << "1. login\n2. signup\ne. exit\n";
cin >> choice;
switch(choice) {
case '1': {
string username, password;
cout << "Enter Username" << endl;
cin >> username;
cout << "Enter Password" << endl;
cin >> password;
loggedInUser = User::login(&appDatabase.appUsers, username, password);
if (loggedInUser == nullptr) {
cout << "couldn't login with given credentials.";
} else {
menuState = MenuState::LOGGED_IN;
}
break;
}
case '2': {
string username, password;
cout << "Enter Username" << endl;
cin >> username;
cout << "Enter Password" << endl;
cin >> password;
try{
User::signup(&appDatabase.appUsers, username, password);
} catch (UserAlreadyExistsException e) {
cout << "Error: username already exists";
}
break;
}
case 'e': {
menuState = MenuState::END;
break;
}
default: {
cout << "Unknown Input" << endl;
}
while (menuState != MenuState::END)
{
switch (menuState)
{
case MenuState::START:
{

cout << "1. login\n2. signup\ne. exit\n";
cin >> choice;
switch (choice)
{
case '1':
{
string username, password;
cout << "Enter Username" << endl;
cin >> username;
cout << "Enter Password" << endl;
cin >> password;
try {
loggedInUser = User::login(&appDatabase.appUsers, username, password);
menuState = MenuState::LOGGED_IN;
} catch (UserNotFoundException e) {
cout << e.what() << endl;
}
break;
}
case MenuState::LOGGED_IN: {
cout << "d.delete account\nl. logout\ne. exit\n";
cin >> choice;
switch(choice) {
case 'd': {
loggedInUser->deleteAccount(&appDatabase.appUsers);
cout << "Account successfully deleted";
loggedInUser = nullptr;
menuState = MenuState::START;
break;
}
case 'l': {
loggedInUser = nullptr;
menuState = MenuState::START;
break;
}
case 'e': {
menuState = MenuState::END;
break;
}
default: {
cout << "Unknown Input" << endl;
}
case '2':
{
string username, password;
cout << "Enter Username" << endl;
cin >> username;
cout << "Enter Password" << endl;
cin >> password;
try
{
User::signup(&appDatabase.appUsers, username, password);
}
catch (UserAlreadyExistsException e)
{
cout << e.what() << endl;
}
break;
}
case 'e':
{
menuState = MenuState::END;
break;
}
default:
{
cout << "Unknown Input" << endl;
}
}
break;
}
case MenuState::LOGGED_IN:
{
cout << "d.delete account\nl. logout\ne. exit\n";
cin >> choice;
switch (choice)
{
case 'd':
{
loggedInUser->deleteAccount(&appDatabase.appUsers);
cout << "Account successfully deleted";
loggedInUser = nullptr;
menuState = MenuState::START;
break;
}
case 'l':
{
loggedInUser = nullptr;
menuState = MenuState::START;
break;
}
case 'e':
{
menuState = MenuState::END;
break;
}
default:
{
cout << "Unknown Input" << endl;
}
}
break;
}
}
}

return 0;

}