1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
package Store;
import Server.JSONMessage;
import com.corundumstudio.socketio.listener.DataListener;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Map;
public class User {
private int id;
private final String userName;
private final String password;
public User(String userName, String password) {
this.userName = userName;
this.password = password;
}
public boolean save() throws SQLException {
if (!checkUniqueUsername(userName)) {
return false;
}
String sql = "INSERT INTO User (userName, password) VALUES (?, ?)";
PreparedStatement statement = ConnectionHandler.connection.prepareStatement(sql);
statement.setString(1, userName);
statement.setString(2, password);
statement.executeUpdate();
return true;
}
private boolean checkUniqueUsername(String userName) throws SQLException {
String sql = "SELECT * FROM User WHERE userName = '" + userName + "'";
Statement statement = ConnectionHandler.connection.createStatement();
ResultSet response = statement.executeQuery(sql);
while (response.next()) {
return false;
}
return true;
}
public boolean login() throws SQLException {
String sql = "SELECT * FROM User WHERE userName = '" + this.userName + "' AND password = '" + this.password + "'";
Statement statement = ConnectionHandler.connection.createStatement();
boolean loggedIn = false;
ResultSet response = statement.executeQuery(sql);
while (response.next()) {
this.id = response.getInt("ID");
loggedIn = true;
}
return loggedIn;
}
public static void createTable() throws SQLException {
String sql = "CREATE TABLE IF NOT EXISTS User (" +
"ID INTEGER NOT NULL PRIMARY KEY," +
"userName TEXT NOT NULL," +
"password text NOT NULL" +
");";
Statement statement = ConnectionHandler.connection.createStatement();
statement.execute(sql);
}
public static DataListener<JSONMessage> signUpHandler() {
return ((client, data, ackSender) -> {
Map<String,String> d = data.getData();
User user = new User(d.get("userName"), d.get("password"));
try {
if (user.save()) {
client.sendEvent("signedUp");
} else {
client.sendEvent("usernameTaken");
client.sendEvent("signUpFailed");
}
} catch (SQLException e) {
client.sendEvent("signUpFailed");
System.out.println(e.getMessage());
}
});
}
public static DataListener<JSONMessage> loginHandler() {
return ((client, data, ackSender) -> {
Map<String,String> d = data.getData();
User user = new User(d.get("userName"), d.get("password"));
try {
user.login();
} catch (SQLException e) {
System.out.println(e.getMessage());
}
if (user.login()) {
client.sendEvent("loggedIn", user.id);
} else {
client.sendEvent("loginFailed");
}
});
}
public String toJSON() {
return "{" +
"\"id\": " + id + "," +
"\"userName\": " + userName + "," +
"\"password\": " + password +
" }";
}
}
|