[W7][T11-2]Li Guanlong

docs/UserGuide.adoc

@@ -29,6 +29,21 @@ Format: `help`
 Help is also shown if you enter an incorrect command e.g. `abcd`
 ====
 
+== Login to the system : `login`
+
+Allow the user to login to the system +
+Format: `login username password`
+
+[NOTE]
+====
+Login is required in order to use the address book
+====
+
+Examples:
+
+* `login guanlong 12345` +
+Logged in as guanlong if the account and password are correct.
+
 == Adding a person: `add`
 
 Adds a person to the address book. +

src/seedu/addressbook/login/Login.java

@@ -0,0 +1,51 @@
+package seedu.addressbook.login;
+
+import java.util.Map;
+import java.util.HashMap;
+
+public class Login {
+
+    private boolean loginStatus;
+
+    public static final String LOGIN_PROMPT = "Please login in order to use the address book";
+    private static final String SUCCESS = "Login Success, loading...";
+    private static final String Invalid_USERNAME_OR_PASSWORD = "Invalid username or password, please try again";
+    private static final String Invalid_FORMAT = "Please input the correct login command: login username password";
+    private Map<String, String> accounts = new HashMap<String, String>();
+
+
+    public Login(){
+        this.loginStatus = false;
+        this.accounts.put("guanlong", "12345");
+        this.accounts.put("doctorA", "doctorA");
+    }
+
+    public void setLoginStatus(boolean newStatus){
+        this.loginStatus = newStatus;
+    }
+
+    public boolean getLoginStatus(){
+        return loginStatus;
+    }
+
+    public String checkLoginInfo(String userCommandText){
+        String[] accountInfo = userCommandText.split(" ");
+        try {
+            if (accountInfo.length == 3 && accountInfo[0].equals("login")) {
+                if (accounts.containsKey(accountInfo[1]) && accounts.get(accountInfo[1]).equals(accountInfo[2])) {
+                    this.loginStatus = true;
+                    return SUCCESS;
+                }
+                else {
+                    return Invalid_USERNAME_OR_PASSWORD;
+                }
+            }
+            else{
+                return Invalid_FORMAT;
+            }
+        }
+        catch (Exception e){
+            return Invalid_FORMAT;
+        }
+    }
+}

src/seedu/addressbook/ui/MainWindow.java

@@ -1,6 +1,5 @@
 package seedu.addressbook.ui;
 
-
 import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
 import javafx.scene.control.TextArea;
@@ -15,13 +14,17 @@
 
 import static seedu.addressbook.common.Messages.*;
 
+import seedu.addressbook.login.Login;
+
 /**
  * Main Window of the GUI.
  */
+
 public class MainWindow {
 
     private Logic logic;
     private Stoppable mainApp;
+    private Login login = new Login();
 
     public MainWindow(){
     }
@@ -45,13 +48,21 @@ public void setMainApp(Stoppable mainApp){
     void onCommand(ActionEvent event) {
         try {
             String userCommandText = commandInput.getText();
-            CommandResult result = logic.execute(userCommandText);
-            if(isExitCommand(result)){
-                exitApp();
-                return;
-            }
-            displayResult(result);
+            String loginResult = login.checkLoginInfo(userCommandText);
+            CommandResult msg = new CommandResult(loginResult);
+            displayResult(msg);
             clearCommandInput();
+
+            if(login.getLoginStatus())
+            {
+                CommandResult result = logic.execute(userCommandText);
+                if(isExitCommand(result)){
+                    exitApp();
+                    return;
+                }
+                displayResult(result);
+                clearCommandInput();
+            }
         } catch (Exception e) {
             display(e.getMessage());
             throw new RuntimeException(e);
@@ -89,7 +100,7 @@ public void displayResult(CommandResult result) {
 
     public void displayWelcomeMessage(String version, String storageFilePath) {
         String storageFileInfo = String.format(MESSAGE_USING_STORAGE_FILE, storageFilePath);
-        display(MESSAGE_WELCOME, version, MESSAGE_PROGRAM_LAUNCH_ARGS_USAGE, storageFileInfo);
+        display(MESSAGE_WELCOME, version, Login.LOGIN_PROMPT, MESSAGE_PROGRAM_LAUNCH_ARGS_USAGE, storageFileInfo);
     }
 
     /**

test/java/seedu/addressbook/login/LoginTest.java

@@ -0,0 +1,41 @@
+package seedu.addressbook.login;
+
+import org.junit.Before;
+import org.junit.ClassRule;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runners.Parameterized;
+
+import static org.junit.Assert.*;
+
+import seedu.addressbook.login.Login;
+
+public class LoginTest {
+
+    private static final String SUCCESS = "Login Success, loading...";
+    private static final String Invalid_USERNAME_OR_PASSWORD = "Invalid username or password, please try again";
+    private static final String Invalid_FORMAT = "Please input the correct login command: login username password";
+    private Login login = new Login();
+
+    @Test
+    public void setLoginStatus() {
+        login.setLoginStatus(true);
+        assertEquals(login.getLoginStatus(), true);
+    }
+
+    @Test
+    public void getLoginStatus() {
+        login.setLoginStatus(false);
+        assertEquals(login.getLoginStatus(), false);
+    }
+
+    @Test
+    public void checkLoginInfo() {
+        final String input1 = "login guanlong 12345";
+        final String input2 = "some_random_string";
+        final String input3 = "login wrong_username wrong_password";
+        assertEquals(login.checkLoginInfo(input1), SUCCESS);
+        assertEquals(login.checkLoginInfo(input2), Invalid_FORMAT);
+        assertEquals(login.checkLoginInfo(input3), Invalid_USERNAME_OR_PASSWORD);
+    }
+}