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Envoy Client v0.1-alpha

This commit is contained in:
Kai S. K. Engelbart 2019-11-27 06:30:05 +01:00
parent a05136517c
commit de23c185c6
17 changed files with 1477 additions and 0 deletions
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.classpath Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" output="target/classes" path="src/main/java">
<attributes>
<attribute name="optional" value="true"/>
<attribute name="maven.pomderived" value="true"/>
</attributes>
</classpathentry>
<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
<attributes>
<attribute name="maven.pomderived" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="src" output="target/test-classes" path="src/test/java">
<attributes>
<attribute name="optional" value="true"/>
<attribute name="maven.pomderived" value="true"/>
<attribute name="test" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
<attributes>
<attribute name="maven.pomderived" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
<attributes>
<attribute name="maven.pomderived" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="output" path="target/classes"/>
</classpath>

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.gitignore vendored Normal file
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/target/
/localDB/

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.project Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>envoy-client</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.jboss.tools.jst.web.kb.kbbuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.jboss.tools.cdi.core.cdibuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.wst.validation.validationbuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.m2e.core.maven2Builder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.jdt.core.javanature</nature>
<nature>org.eclipse.m2e.core.maven2Nature</nature>
<nature>org.jboss.tools.jst.web.kb.kbnature</nature>
<nature>org.jboss.tools.cdi.core.cdinature</nature>
</natures>
</projectDescription>

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.settings/org.eclipse.core.resources.prefs Normal file
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eclipse.preferences.version=1
encoding//src/main/java=UTF-8
encoding//src/main/resources=UTF-8
encoding//src/test/java=UTF-8
encoding//src/test/resources=UTF-8
encoding/<project>=UTF-8

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.settings/org.eclipse.jdt.core.prefs Normal file
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eclipse.preferences.version=1
org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
org.eclipse.jdt.core.compiler.compliance=1.8
org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore
org.eclipse.jdt.core.compiler.release=disabled
org.eclipse.jdt.core.compiler.source=1.8

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.settings/org.eclipse.m2e.core.prefs Normal file
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activeProfiles=
eclipse.preferences.version=1
resolveWorkspaceProjects=true
version=1

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pom.xml Normal file
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<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>informatik-ag-ngl</groupId>
<artifactId>envoy-client</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Envoy Client</name>
<url>https://github.com/informatik-ag-ngl/envoy-client</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-client</artifactId>
<version>4.1.1.Final</version>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxb-provider</artifactId>
<version>4.3.1.Final</version>
</dependency>
<dependency>
<groupId>informatik-ag-ngl</groupId>
<artifactId>envoy-common</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
<build>
<finalName>envoy-client</finalName>
</build>
</project>

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src/main/java/envoy/client/Chat.java Normal file
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package envoy.client;
import java.io.Serializable;
import javax.swing.DefaultListModel;
import envoy.schema.Message;
import envoy.schema.User;
public class Chat implements Serializable {
private static final long serialVersionUID = -7751248474547242056L;
private User recipient;
private DefaultListModel<Message> model = new DefaultListModel<>();
/**
* Provides the list of messages that the recipient receives.<br>
* Saves the Messages in the corresponding chat at that Point.
*
* @param recipient the user who receives the messages
* @since Envoy v0.1-alpha
*/
public Chat(User recipient) { this.recipient = recipient; }
/**
* @return the recipient of a message
* @since Envoy v0.1-alpha
*/
public User getRecipient() { return recipient; }
/**
* Adds the received message at the current Point in the current chat
*
* @param message the message to add in said chat
* @since Envoy v0.1-alpha
*/
public void appendMessage(Message message) { model.addElement(message); }
/**
* @return all messages in the current chat
* @since Envoy v0.1-alpha
*/
public DefaultListModel<Message> getModel() { return model; }
}

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src/main/java/envoy/client/Client.java Normal file
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package envoy.client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.Response;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import envoy.schema.ObjectFactory;
import envoy.schema.Sync;
import envoy.schema.User;
/**
* Project: <strong>envoy-client</strong><br>
* File: <strong>Client.java</strong><br>
* Created: <strong>28 Sep 2019</strong><br>
*
* @author Kai S. K. Engelbart
* @author Maximilian K&auml;fer
* @author Leon Hofmeister
* @since Envoy v0.1-alpha
*/
public class Client {
private ObjectFactory objectFactory = new ObjectFactory();
private Config config;
private User sender, recipient;
public Client(Config config, String username) {
this.config = config;
sender = getUser(username);
System.out.println("ID: " + sender.getID());
}
private <T, R> R post(String uri, T body, Class<R> responseBodyClass) {
javax.ws.rs.client.Client client = ClientBuilder.newClient();
WebTarget target = client.target(uri);
Response response = target.request().post(Entity.entity(body, "application/xml"));
R responseBody = response.readEntity(responseBodyClass);
response.close();
client.close();
return responseBody;
}
/**
* Returns a {@link Sync} with all users on the server.
*
* @return Sync - List of all users on the server.
* @since Envoy v0.1-alpha
*/
public Sync getUsersListXml() {
Sync sendSync = objectFactory.createSync();
User user = objectFactory.createUser();
user.setID(-1);
sendSync.getUsers().add(user);
Sync returnSendSync = post(
String
.format("%s:%d/envoy-server/rest/sync/syncData?userId=%d", config.getServer(), config.getPort(), 0),
sendSync,
Sync.class);
return returnSendSync;
}
/**
* Returns a {@link User} with a specific id by name.
*
* @param name - the name of the {@link User}
* @return a {@link User} with the specified name
* @since Envoy v0.1-alpha
*/
private User getUser(String name) {
Sync senderSync = objectFactory.createSync();
User user = objectFactory.createUser();
user.setName(name);
senderSync.getUsers().add(user);
Sync returnSenderSync = post(
String
.format("%s:%d/envoy-server/rest/sync/syncData?userId=%d", config.getServer(), config.getPort(), 0),
senderSync,
Sync.class);
User returnSender = objectFactory.createUser();
if (returnSenderSync.getUsers().size() == 1) {
returnSender = returnSenderSync.getUsers().get(0);
} else {
System.out.println("ERROR exiting...");
}
return returnSender;
}
/**
* Sends the "sync" Sync Object to the server and gets a "returnSync" Sync
* Object as response. <br>
* It is also used to get the own sender at the start of the client
* (Client sends "sync" Sync Object with single user in it(name: the name
* entered at login, id: 0, UserStatus:null))<br>
* and to get a complete list of all users saved on the server.
* (Client sends "sync" Sync Object with single user in it(name: "" (empty), id:
* -1, UserStatus:null)) <br>
* This method also processes the response Sync Object. <br>
* It sorts its users and messages by specific variables and does certain things
* with them. <br>
* <br>
* Messages: <br>
* -State SENT: Update Local message(s) with State WAITING (add Message ID and
* change State to SENT). (server sends these informations to the client if
* message(s) with State WAITING were successfully sent to the server)<br>
* -State RECEIVED, SenderID != 0: Adds the unread Messages returned from the
* server in the latest sync to the "unreadMessagesSync" Sync Object. <br>
* -State RECEIVED, SenderID == 0: Update message(s) in localDB to state
* RECEIVED.
* (server sends these informations to the client if the other client received
* the message(s).) <br>
* -State READ: Update message(s) in the LocalDB to state READ. (server sends
* these informations to the client if the other client read
* the message(s).) <br>
* <br>
* Users: <br>
* Updating UserStatus of all users in LocalDB. (Server sends all users with
* their updated UserStatus to the client.) <br>
*
* @param userId
* @since Envoy v0.1-alpha
*/
public Sync sendSync(long userId, Sync sync) {
// Print sync XML to console
JAXBContext jc;
try {
jc = JAXBContext.newInstance("envoy.schema");
Marshaller m = jc.createMarshaller();
m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
m.marshal(sync, System.out);
} catch (JAXBException e) {
e.printStackTrace();
}
// Send sync
return post(String
.format("%s:%d/envoy-server/rest/sync/syncData?userId=%d", config.getServer(), config.getPort(), userId),
sync,
Sync.class);
}
/**
* @return the sender object that represents this client.
* @since Envoy v0.1-alpha
*/
public User getSender() { return sender; }
/**
* @return the current recipient of the current chat.
* @since Envoy v0.1-alpha
*/
public User getRecipient() { return recipient; }
/**
* Sets the recipient.
* @param recipient - the recipient to set
* @since Envoy v0.1-alpha
*/
public void setRecipient(User recipient) { this.recipient = recipient; }
/**
* @return true, if a recipient is selected
* @since Envoy v0.1-alpha
*/
public boolean hasRecipient() { return recipient != null; }
}

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package envoy.client;
import java.io.File;
import java.util.Properties;
/**
* Project: <strong>envoy-client</strong><br>
* File: <strong>Config.java</strong><br>
* Created: <strong>12 Oct 2019</strong><br>
*
* @author Kai S. K. Engelbart
* @since Envoy v0.1-alpha
*/
public class Config {
private String server;
private int port;
private File localDB;
private int syncTimeout;
private static Config config;
private Config() {}
public static Config getInstance() {
if (config == null) config = new Config();
return config;
}
/**
* Defaults to the {@code client.properties} file for information.
*
* @param properties a {@link Properties} object containing information about
* the server and port, as well as the path to the local
* database
* @since Envoy v0.1-alpha
*/
public void load(Properties properties) {
if (properties.containsKey("server")) server = properties.getProperty("server");
if (properties.containsKey("port")) port = Integer.parseInt(properties.getProperty("port"));
localDB = new File(properties.getProperty("localDB", ".\\localDB"));
syncTimeout = Integer.parseInt(properties.getProperty("syncTimeout", "1000"));
}
/**
* Sets the server, port and localDB path via command line properties --server /
* -s, --port / -p and --localDB / -db.
*
* @param args the command line arguments to parse
* @since Envoy v0.1-alpha
*/
public void load(String[] args) {
for (int i = 0; i < args.length; i++)
switch (args[i]) {
case "--server":
case "-s":
server = args[++i];
break;
case "--port":
case "-p":
port = Integer.parseInt(args[++i]);
break;
case "--localDB":
case "-db":
localDB = new File(args[++i]);
}
if (localDB == null) localDB = new File(".\\localDB");
if (syncTimeout == 0) syncTimeout = 1000;
}
/**
* @return {@code true} if server, port and localDB directory are known.
* @since Envoy v0.1-alpha
*/
public boolean isInitialized() {
return server != null && !server.isEmpty() && port > 0 && port < 65566 && localDB != null;
}
/**
* @return the host name of the Envoy server
* @since Envoy v0.1-alpha
*/
public String getServer() { return server; }
/**
* Changes the default server host name.
* Exclusively intended for development purposes.
*
* @param server the host name of the Envoy server
* @since Envoy v0.1-alpha
*/
public void setServer(String server) { this.server = server; }
/**
* @return the port at which the Envoy server is located on the host
* @since Envoy v0.1-alpha
*/
public int getPort() { return port; }
/**
* Changes the default port.
* Exclusively intended for development purposes.
*
* @param port the port where an Envoy server is located
* @since Envoy v0.1-alpha
*/
public void setPort(int port) { this.port = port; }
/**
* @return the local database specific to the client user
* @since Envoy v0.1-alpha
**/
public File getLocalDB() { return localDB; }
/**
* Changes the default local database.
* Exclusively intended for development purposes.
*
* @param the file containing the local database
* @since Envoy v0.1-alpha
**/
public void setLocalDB(File localDB) { this.localDB = localDB; }
public int getSyncTimeout() { return syncTimeout; }
public void setSyncTimeout(int syncTimeout) { this.syncTimeout = syncTimeout; }
}

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src/main/java/envoy/client/LocalDB.java Normal file
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package envoy.client;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.time.Instant;
import java.util.ArrayList;
import java.util.List;
import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeFactory;
import envoy.exception.EnvoyException;
import envoy.schema.Message;
import envoy.schema.Message.Metadata.MessageState;
import envoy.schema.ObjectFactory;
import envoy.schema.Sync;
import envoy.schema.User;
/**
* Project: <strong>envoy-client</strong><br>
* File: <strong>LocalDB.java</strong><br>
* Created: <strong>27.10.2019</strong><br>
*
* @author Kai S. K. Engelbart
* @author Maximilian K&auml;fer
* @since Envoy v0.1-alpha
*/
public class LocalDB {
private File localDB;
private User sender;
private List<Chat> chats = new ArrayList<>();
private ObjectFactory objectFactory = new ObjectFactory();
private DatatypeFactory datatypeFactory;
private Sync unreadMessagesSync = objectFactory.createSync();
private Sync sync = objectFactory.createSync();
private Sync readMessages = objectFactory.createSync();
/**
* Constructs an empty local database.
*
* @param client the user that is logged in with this client
* @since Envoy v0.1-alpha
*/
public LocalDB(User sender) {
this.sender = sender;
try {
datatypeFactory = DatatypeFactory.newInstance();
} catch (DatatypeConfigurationException e) {
e.printStackTrace();
}
}
/**
* Initializes the local database and fills it with values
* if the user has already sent or received messages.
*
* @param localDBDir the directory where we wish to save/load the database from.
* @throws EnvoyException if the directory selected is not an actual directory.
* @since Envoy v0.1-alpha
*/
public void initializeDBFile(File localDBDir) throws EnvoyException {
if (localDBDir.exists() && !localDBDir.isDirectory())
throw new EnvoyException(String.format("LocalDBDir '%s' is not a directory!", localDBDir.getAbsolutePath()));
localDB = new File(localDBDir, sender.getID() + ".db");
if (localDB.exists()) loadFromLocalDB();
}
/**
* Saves the database into a file for future use.
*
* @throws IOException if something went wrong during saving
* @since Envoy v0.1-alpha
*/
public void saveToLocalDB() {
try {
localDB.getParentFile().mkdirs();
localDB.createNewFile();
} catch (IOException e) {
e.printStackTrace();
System.err.println("unable to save the messages");
}
try (ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(localDB))) {
out.writeObject(chats);
} catch (IOException ex) {
ex.printStackTrace();
System.err.println("unable to save the messages");
}
}
/**
* Loads all chats saved by Envoy for the client user.
*
* @throws EnvoyException if something fails while loading.
* @since Envoy v0.1-alpha
*/
@SuppressWarnings("unchecked")
private void loadFromLocalDB() throws EnvoyException {
try (ObjectInputStream in = new ObjectInputStream(new FileInputStream(localDB))) {
Object obj = in.readObject();
if (obj instanceof ArrayList<?>) chats = (ArrayList<Chat>) obj;
} catch (ClassNotFoundException | IOException e) {
throw new EnvoyException(e);
}
}
/**
* Creates a {@link Message} object serializable to XML.
*
* @param textContent The content (text) of the message
* @return prepared {@link Message} object
*/
public Message createMessage(String textContent, User recipient) {
Message.Metadata metaData = objectFactory.createMessageMetadata();
metaData.setSender(sender.getID());
metaData.setRecipient(recipient.getID());
metaData.setState(MessageState.WAITING);
metaData.setDate(datatypeFactory.newXMLGregorianCalendar(Instant.now().toString()));
Message.Content content = objectFactory.createMessageContent();
content.setType("text");
content.setText(textContent);
Message message = objectFactory.createMessage();
message.setMetadata(metaData);
message.getContent().add(content);
return message;
}
public Sync fillSync(long userId) {
addWaitingMessagesToSync();
sync.getMessages().addAll(readMessages.getMessages());
readMessages.getMessages().clear();
System.out.println(sync.getMessages().size());
return sync;
}
public void applySync(Sync returnSync) {
for (int i = 0; i < returnSync.getMessages().size(); i++) {
if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0
&& returnSync.getMessages().get(i).getMetadata().getState() == MessageState.SENT) {
// Update Local Messages with State WAITING (add Message ID and change State to
// SENT)
for (int j = 0; j < sync.getMessages().size(); j++) {
if (j == i) {
sync.getMessages().get(j).getMetadata().setMessageId(returnSync.getMessages().get(j).getMetadata().getMessageId());
sync.getMessages().get(j).getMetadata().setState(returnSync.getMessages().get(j).getMetadata().getState());
}
}
}
if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 && returnSync.getMessages().get(i).getMetadata().getSender() != 0
&& returnSync.getMessages().get(i).getMetadata().getState() == MessageState.RECEIVED) {
// these are the unread Messages from the server
unreadMessagesSync.getMessages().add(returnSync.getMessages().get(i));
}
if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 && returnSync.getMessages().get(i).getMetadata().getSender() == 0
&& returnSync.getMessages().get(i).getMetadata().getState() == MessageState.RECEIVED) {
// Update Messages in localDB to state RECEIVED
for (int j = 0; j < getChats().size(); j++) {
if (getChats().get(j).getRecipient().getID() == returnSync.getMessages().get(i).getMetadata().getRecipient()) {
for (int k = 0; k < getChats().get(j).getModel().getSize(); k++) {
if (getChats().get(j).getModel().get(k).getMetadata().getMessageId() == returnSync.getMessages()
.get(i)
.getMetadata()
.getMessageId()) {
// Update Message in LocalDB
getChats().get(j).getModel().get(k).getMetadata().setState(returnSync.getMessages().get(j).getMetadata().getState());
}
}
}
}
}
if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0
&& returnSync.getMessages().get(i).getMetadata().getState() == MessageState.READ) {
// Update local Messages to state READ
System.out.println("Message with ID: " + returnSync.getMessages().get(i).getMetadata().getMessageId()
+ "was initialized to be set to READ in localDB.");
for (int j = 0; j < getChats().size(); j++) {
if (getChats().get(j).getRecipient().getID() == returnSync.getMessages().get(i).getMetadata().getRecipient()) {
System.out.println("Chat with: " + getChats().get(j).getRecipient().getID() + "was selected.");
for (int k = 0; k < getChats().get(j).getModel().getSize(); k++) {
if (getChats().get(j).getModel().get(k).getMetadata().getMessageId() == returnSync.getMessages()
.get(i)
.getMetadata()
.getMessageId()) {
System.out.println(
"Message with ID: " + getChats().get(j).getModel().get(k).getMetadata().getMessageId() + "was selected.");
getChats().get(j).getModel().get(k).getMetadata().setState(returnSync.getMessages().get(i).getMetadata().getState());
System.out
.println("Message State is now: " + getChats().get(j).getModel().get(k).getMetadata().getState().toString());
}
}
}
}
}
}
// Updating UserStatus of all users in LocalDB
for (int j = 0; j < returnSync.getUsers().size(); j++) {
for (int k = 0; k < getChats().size(); k++) {
if (getChats().get(k).getRecipient().getID() == returnSync.getUsers().get(j).getID()) {
getChats().get(k).getRecipient().setStatus(returnSync.getUsers().get(j).getStatus());
System.out.println(getChats().get(k).getRecipient().getStatus().toString());
}
}
}
sync.getMessages().clear();
sync.getUsers().clear();
}
/**
* Adds the unread messages returned from the server in the latest sync to the
* right chats in the LocalDB.
*
* @param localDB
* @since Envoy v0.1-alpha
*/
public void addUnreadMessagesToLocalDB() {
Sync unreadMessages = unreadMessagesSync;
for (int i = 0; i < unreadMessages.getMessages().size(); i++)
for (int j = 0; j < getChats().size(); j++)
if (getChats().get(j).getRecipient().getID() == unreadMessages.getMessages().get(i).getMetadata().getSender()) {
getChats().get(j).appendMessage(unreadMessages.getMessages().get(i));
}
}
/**
* Changes all messages with state {@code RECEIVED} of a specific chat to state
* {@code READ}.
* <br>
* Adds these messages to the {@code readMessages} {@link Sync} object.
*
* @param currentChat
* @since Envoy v0.1-alpha
*/
public void setMessagesToRead(Chat currentChat) {
for (int i = currentChat.getModel().size() - 1; i >= 0; --i)
if (currentChat.getModel().get(i).getMetadata().getRecipient() != currentChat.getRecipient().getID())
if (currentChat.getModel().get(i).getMetadata().getState() == MessageState.RECEIVED) {
currentChat.getModel().get(i).getMetadata().setState(MessageState.READ);
readMessages.getMessages().add(currentChat.getModel().get(i));
} else break;
}
/**
* Adds all messages with state {@code WAITING} from the {@link LocalDB} to the
* {@link Sync} object.
*
* @since Envoy v0.1-alpha
*/
private void addWaitingMessagesToSync() {
for (Chat chat : getChats())
for (int i = 0; i < chat.getModel().size(); i++)
if (chat.getModel().get(i).getMetadata().getState() == MessageState.WAITING) {
System.out.println("Got Waiting Message");
sync.getMessages().add(chat.getModel().get(i));
}
}
/**
* Clears the {@code unreadMessagesSync} {@link Sync} object.
*
* @since Envoy v0.1-alpha
*/
public void clearUnreadMessagesSync() { unreadMessagesSync.getMessages().clear(); }
/**
* @return all saves {@link Chat} objects that list the client user as the
* client
* @since Envoy v0.1-alpha
**/
public List<Chat> getChats() { return chats; }
/**
* @return the {@link User} who initialized the local database
* @since Envoy v0.1-alpha
*/
public User getUser() { return sender; }
}

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package envoy.client.ui;
import java.awt.Color;
import java.awt.ComponentOrientation;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextPane;
import javax.swing.ListSelectionModel;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import javax.swing.border.EmptyBorder;
import envoy.client.Chat;
import envoy.client.Client;
import envoy.client.Config;
import envoy.client.LocalDB;
import envoy.schema.Message;
import envoy.schema.Sync;
import envoy.schema.User;
/**
* Project: <strong>envoy-client</strong><br>
* File: <strong>ChatWindow.java</strong><br>
* Created: <strong>28 Sep 2019</strong><br>
*
* @author Kai S. K. Engelbart
* @author Maximilian K&auml;fer
* @author Leon Hofmeister
* @since Envoy v0.1-alpha
*/
public class ChatWindow extends JFrame {
private static final long serialVersionUID = 6865098428255463649L;
private JPanel contentPane = new JPanel();
private Client client;
private LocalDB localDB;
private JList<User> userList = new JList<>();
private Chat currentChat;
private JTextArea messageEnterTextArea;
public ChatWindow(Client client, LocalDB localDB) {
this.client = client;
this.localDB = localDB;
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 600, 800);
setTitle("Envoy");
setLocationRelativeTo(null);
// Save chats when window closes
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) { localDB.saveToLocalDB(); }
});
contentPane.setBackground(new Color(0, 0, 0));
contentPane.setForeground(Color.white);
contentPane.setBorder(new EmptyBorder(0, 5, 0, 0));
setContentPane(contentPane);
GridBagLayout gbl_contentPane = new GridBagLayout();
gbl_contentPane.columnWidths = new int[] { 1, 1, 1 };
gbl_contentPane.rowHeights = new int[] { 1, 1, 1 };
gbl_contentPane.columnWeights = new double[] { 0.3, 1.0, 0.1 };
gbl_contentPane.rowWeights = new double[] { 0.05, 1.0, 0.07 };
contentPane.setLayout(gbl_contentPane);
JList<Message> messageList = new JList<>();
messageList.setCellRenderer(new MessageListRenderer());
messageList.setFocusTraversalKeysEnabled(false);
messageList.setSelectionForeground(new Color(255, 255, 255));
messageList.setSelectionBackground(new Color(102, 0, 153));
messageList.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
messageList.setForeground(new Color(255, 255, 255));
messageList.setBackground(new Color(51, 51, 51));
DefaultListModel<Message> messageListModel = new DefaultListModel<>();
messageList.setModel(messageListModel);
messageList.setFont(new Font("Arial", Font.PLAIN, 17));
messageList.setFixedCellHeight(60);
messageList.setBorder(new EmptyBorder(5, 5, 5, 5));
JScrollPane scrollPane = new JScrollPane();
scrollPane.setForeground(new Color(0, 0, 0));
scrollPane.setBackground(new Color(51, 51, 51));
scrollPane.setViewportView(messageList);
scrollPane.setBorder(null);
GridBagConstraints gbc_scrollPane = new GridBagConstraints();
gbc_scrollPane.fill = GridBagConstraints.BOTH;
gbc_scrollPane.gridwidth = 2;
gbc_scrollPane.gridx = 1;
gbc_scrollPane.gridy = 1;
gbc_scrollPane.insets = new Insets(0, 10, 10, 10);
contentPane.add(scrollPane, gbc_scrollPane);
// Message enter field
messageEnterTextArea = new JTextArea();
messageEnterTextArea.addKeyListener(new KeyAdapter() {
@Override
public void keyReleased(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER && ((SettingsScreen.enterToSend && e.getModifiersEx() == 0)
|| (e.getModifiersEx() == KeyEvent.CTRL_DOWN_MASK))) {
postMessage(messageList);
}
}
});
// Checks for changed Message
messageEnterTextArea.setWrapStyleWord(true);
messageEnterTextArea.setCaretColor(new Color(255, 255, 255));
messageEnterTextArea.setForeground(new Color(255, 255, 255));
messageEnterTextArea.setBackground(new Color(51, 51, 51));
messageEnterTextArea.setLineWrap(true);
messageEnterTextArea.setBorder(null);
messageEnterTextArea.setFont(new Font("Arial", Font.PLAIN, 17));
messageEnterTextArea.setBorder(new EmptyBorder(5, 5, 5, 5));
GridBagConstraints gbc_messageEnterTextfield = new GridBagConstraints();
gbc_messageEnterTextfield.fill = GridBagConstraints.BOTH;
gbc_messageEnterTextfield.gridx = 1;
gbc_messageEnterTextfield.gridy = 2;
gbc_messageEnterTextfield.insets = new Insets(10, 10, 10, 10);
contentPane.add(messageEnterTextArea, gbc_messageEnterTextfield);
// Post Button
JButton postButton = new JButton("Post");
postButton.setForeground(new Color(255, 255, 255));
postButton.setBackground(new Color(102, 51, 153));
postButton.setBorderPainted(false);
GridBagConstraints gbc_moveSelectionPostButton = new GridBagConstraints();
gbc_moveSelectionPostButton.fill = GridBagConstraints.BOTH;
gbc_moveSelectionPostButton.gridx = 2;
gbc_moveSelectionPostButton.gridy = 2;
gbc_moveSelectionPostButton.insets = new Insets(10, 10, 10, 10);
postButton.addActionListener((evt) -> { postMessage(messageList); });
contentPane.add(postButton, gbc_moveSelectionPostButton);
// Settings Button
JButton settingsButton = new JButton("Settings");
settingsButton.setForeground(new Color(255, 255, 255));
settingsButton.setBackground(new Color(102, 51, 153));
settingsButton.setBorderPainted(false);
GridBagConstraints gbc_moveSelectionSettingsButton = new GridBagConstraints();
gbc_moveSelectionSettingsButton.fill = GridBagConstraints.BOTH;
gbc_moveSelectionSettingsButton.gridx = 2;
gbc_moveSelectionSettingsButton.gridy = 0;
gbc_moveSelectionSettingsButton.insets = new Insets(10, 10, 10, 10);
settingsButton.addActionListener((evt) -> {
try {
SettingsScreen.open(localDB.getUser().getName());
} catch (Exception e) {
SettingsScreen.open();
System.err.println("An error occured while opening the settings screen: " + e);
e.printStackTrace();
}
});
contentPane.add(settingsButton, gbc_moveSelectionSettingsButton);
// Partner name display
JTextPane textPane = new JTextPane();
textPane.setBackground(new Color(0, 0, 0));
textPane.setForeground(new Color(255, 255, 255));
textPane.setFont(new Font("Arial", Font.PLAIN, 20));
GridBagConstraints gbc_partnerName = new GridBagConstraints();
gbc_partnerName.fill = GridBagConstraints.HORIZONTAL;
gbc_partnerName.gridx = 1;
gbc_partnerName.gridy = 0;
gbc_partnerName.insets = new Insets(0, 10, 0, 10);
contentPane.add(textPane, gbc_partnerName);
userList.setCellRenderer(new UserListRenderer());
userList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
userList.addListSelectionListener((listSelectionEvent) -> {
if (!listSelectionEvent.getValueIsAdjusting()) {
@SuppressWarnings("unchecked")
final JList<User> selectedUserList = (JList<User>) listSelectionEvent.getSource();
final User user = selectedUserList.getSelectedValue();
client.setRecipient(user);
currentChat = localDB.getChats()
.stream()
.filter(chat -> chat.getRecipient().getID() == user.getID())
.findFirst()
.get();
// Set all unread messages in the chat to read
readCurrentChat();
client.setRecipient(user);
textPane.setText(currentChat.getRecipient().getName());
messageList.setModel(currentChat.getModel());
contentPane.revalidate();
}
});
userList.setSelectionForeground(new Color(255, 255, 255));
userList.setSelectionBackground(new Color(102, 0, 153));
userList.setForeground(new Color(255, 255, 255));
userList.setBackground(new Color(51, 51, 51));
userList.setFont(new Font("Arial", Font.PLAIN, 17));
userList.setBorder(new EmptyBorder(5, 5, 5, 5));
GridBagConstraints gbc_userList = new GridBagConstraints();
gbc_userList.fill = GridBagConstraints.VERTICAL;
gbc_userList.gridx = 0;
gbc_userList.gridy = 1;
gbc_userList.anchor = GridBagConstraints.PAGE_START;
gbc_userList.insets = new Insets(0, 0, 10, 0);
contentPane.add(userList, gbc_userList);
contentPane.revalidate();
loadUsersAndChats();
startSyncThread(Config.getInstance().getSyncTimeout());
contentPane.revalidate();
}
private void postMessage(JList<Message> messageList) {
if (!client.hasRecipient()) {
JOptionPane.showMessageDialog(this,
"Please select a recipient!",
"Cannot send message",
JOptionPane.INFORMATION_MESSAGE);
}
if (!messageEnterTextArea.getText().isEmpty()) try {
// Create and send message object
final Message message = localDB.createMessage(messageEnterTextArea.getText(), currentChat.getRecipient());
currentChat.appendMessage(message);
messageList.setModel(currentChat.getModel());
// Clear text field
messageEnterTextArea.setText("");
contentPane.revalidate();
} catch (Exception e) {
JOptionPane.showMessageDialog(this,
"An exception occured while sending a message. See the log for more details.",
"Exception occured",
JOptionPane.ERROR_MESSAGE);
e.printStackTrace();
}
}
/**
* Initializes the elements of the user list by downloading them from the
* server.
*
* @since Envoy v0.1-alpha
*/
private void loadUsersAndChats() {
new Thread(() -> {
Sync users = client.getUsersListXml();
DefaultListModel<User> userListModel = new DefaultListModel<>();
users.getUsers().forEach(user -> {
userListModel.addElement(user);
// Check if user exists in local DB
if (localDB.getChats().stream().filter(c -> c.getRecipient().getID() == user.getID()).count() == 0)
localDB.getChats().add(new Chat(user));
});
SwingUtilities.invokeLater(() -> userList.setModel(userListModel));
}).start();
}
/**
* Updates the data model and the UI repeatedly after a certain amount of
* time.
*
* @param timeout the amount of time that passes between two requests sent to
* the server
* @since Envoy v0.1-alpha
*/
private void startSyncThread(int timeout) {
new Timer(timeout, (evt) -> {
new Thread(() -> {
// Synchronize
localDB.applySync(
client.sendSync(client.getSender().getID(), localDB.fillSync(client.getSender().getID())));
// Process unread messages
localDB.addUnreadMessagesToLocalDB();
localDB.clearUnreadMessagesSync();
// Mark unread messages as read when they are in the current chat
readCurrentChat();
// Update UI
SwingUtilities
.invokeLater(() -> { updateUserStates(); contentPane.revalidate(); contentPane.repaint(); });
}).start();
}).start();
}
private void updateUserStates() {
for (int i = 0; i < userList.getModel().getSize(); i++)
for (int j = 0; j < localDB.getChats().size(); j++)
if (userList.getModel().getElementAt(i).getID() == localDB.getChats().get(j).getRecipient().getID())
userList.getModel().getElementAt(i).setStatus(localDB.getChats().get(j).getRecipient().getStatus());
}
/**
* Marks messages in the current chat as {@code READ}.
*/
private void readCurrentChat() { if (currentChat != null) { localDB.setMessagesToRead(currentChat); } }
}

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src/main/java/envoy/client/ui/MessageListRenderer.java Normal file
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package envoy.client.ui;
import java.awt.Component;
import java.text.SimpleDateFormat;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.ListCellRenderer;
import envoy.schema.Message;
/**
* Defines how a message is displayed.<br>
* <br>
*
* Project: <strong>envoy-client</strong><br>
* File: <strong>UserListRenderer.java</strong><br>
* Created: <strong>19 Oct 2019</strong><br>
*
* @author Kai S. K. Engelbart
* @author Maximilian K&auml;fer
* @since Envoy v0.1-alpha
*/
public class MessageListRenderer extends JLabel implements ListCellRenderer<Message> {
private static final long serialVersionUID = 5164417379767181198L;
@Override
public Component getListCellRendererComponent(JList<? extends Message> list, Message value, int index,
boolean isSelected, boolean cellHasFocus) {
if (isSelected) {
setBackground(list.getSelectionBackground());
setForeground(list.getSelectionForeground());
} else {
setBackground(list.getBackground());
setForeground(list.getForeground());
}
setOpaque(true);
final String text = value.getContent().get(0).getText();
final String state = value.getMetadata().getState().toString();
final String date = value.getMetadata().getDate() == null ? ""
: new SimpleDateFormat("dd.MM.yyyy HH:mm ")
.format(value.getMetadata().getDate().toGregorianCalendar().getTime());
setText(String.format(
"<html><p style=\"color:#d2d235\"><b><small>%s</b></small><br><p style=\"color:white\">%s :%s</html>",
date,
text,
state));
return this;
}
}

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src/main/java/envoy/client/ui/SettingsScreen.java Normal file
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package envoy.client.ui;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
/**
* Project: <strong>envoy-client</strong><br>
* File: <strong>SettingsScreen.java</strong><br>
* Created: <strong>31 Oct 2019</strong><br>
*
* @author Leon Hofmeister
*/
public class SettingsScreen extends JDialog {
private static final long serialVersionUID = -4476913491263077107L;
private final JPanel contentPanel = new JPanel();
public static boolean enterToSend = true;
// TODO: Add a JPanel with all the Information necessary:
// change (Picture,Username, Email, Password) and toggle(light/dark mode,
// "ctrl+enter"/"enter"
// to send a message directly)
/**
* Open the Settings screen.
* Only suited for Dev/Error mode.
* Avoid usage.
*
* @since Envoy v0.1-alpha
*/
public static void open() { open(new SettingsScreen()); }
/**
* Opens the Settings screen.<br>
* Use preferably since everyone is already initialised.<br>
* It personalises the screen more.
*
* @param username The name of the User
* @param Email The Email that is associated with that Account
* @since Envoy v0.1-alpha
*/
public static void open(String username) {// , String Email) {AUSKLAMMERN, WENN ANMELDUNG PER
// EMAIL IMPLEMENTIERT IST!
open(new SettingsScreen(username));
}
public static void open(SettingsScreen dialog) {
dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
dialog.setModal(true);
dialog.setVisible(true);
}
/**
* Builds the Settings screen.<br>
* Use only as Dev/Error Mode.<br>
* Avoid usage.
*
* @since Envoy v0.1-alpha
*/
public SettingsScreen() {
setBackground(Color.BLACK);
setBounds(100, 100, 450, 300);
getContentPane().setLayout(new BorderLayout());
contentPanel.setBackground(Color.BLACK);
contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
getContentPane().add(contentPanel, BorderLayout.CENTER);
contentPanel.setLayout(new BorderLayout(0, 0));
{
JPanel buttonPane = new JPanel();
buttonPane.setBackground(Color.BLACK);
getContentPane().add(buttonPane, BorderLayout.SOUTH);
buttonPane.setLayout(new BorderLayout(0, 0));
{
JButton okButton = new JButton("Save");
okButton.setActionCommand("OK");
buttonPane.add(okButton, BorderLayout.EAST);
getRootPane().setDefaultButton(okButton);
okButton.addActionListener((evt) -> {
// Hier später die Daten abspeichern, wenn Datenmodell implementiert ist
dispose();
});
}
{
JButton cancelButton = new JButton("Cancel");
cancelButton.setActionCommand("Cancel");
buttonPane.add(cancelButton, BorderLayout.WEST);
cancelButton.addActionListener((evt) -> { dispose(); });
}
}
}
/**
* Builds the Settings screen.<br>
* Use preferreably since everyone is already initialised.<br>
* It personalises the screen more.
*
* @param Username The name of the User
* @param Email The Email that is associated with that Account
* @since Envoy v0.1-alpha
*/
public SettingsScreen(String Username) {// , String Email, String hashedPwd) {AUSKLAMMERN, WENN ANMELDUNG PER EMAIL
// IMPLEMENTIERT IST!
setBackground(Color.BLACK);
setBounds(100, 100, 450, 300);
getContentPane().setLayout(new BorderLayout());
contentPanel.setBackground(Color.BLACK);
contentPanel.setLayout(new FlowLayout());
contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
getContentPane().add(contentPanel, BorderLayout.CENTER);
{
JPanel buttonPane = new JPanel();
buttonPane.setBackground(Color.BLACK);
getContentPane().add(buttonPane, BorderLayout.SOUTH);
buttonPane.setLayout(new BorderLayout(0, 0));
{
JButton okButton = new JButton("Save");
okButton.setActionCommand("OK");
buttonPane.add(okButton, BorderLayout.EAST);
getRootPane().setDefaultButton(okButton);
okButton.addActionListener((evt) -> {
// Hier später die Daten abspeichern, wenn Datenmodell implementiert ist
dispose();
});
}
{
JButton cancelButton = new JButton("Cancel");
cancelButton.setActionCommand("Cancel");
buttonPane.add(cancelButton, BorderLayout.WEST);
cancelButton.addActionListener((evt) -> { dispose(); });
}
}
}
/**
* @return true if Enter should be used to send a message instead of ctrl+enter
* @since Envoy v0.1-alpha
*/
public static boolean isEnterToSend() { return enterToSend; }
/**
* @param enterToSend <br>
* toggles whether a message should be sent via
* <br>
* buttonpress "enter" or "ctrl"+"enter"
* @since Envoy v0.1-alpha
*/
public static void setEnterToSend(boolean enterForSend) { enterToSend = enterForSend; }
// TODO: Should be changed to private, but later to avoid warnings
}

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src/main/java/envoy/client/ui/Startup.java Normal file
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package envoy.client.ui;
import java.awt.EventQueue;
import java.io.IOException;
import java.util.Properties;
import javax.swing.JOptionPane;
import envoy.client.Client;
import envoy.client.Config;
import envoy.client.LocalDB;
import envoy.exception.EnvoyException;
/**
* Starts the Envoy client and prompts the user to enter their name.
*
* Project: <strong>envoy-client</strong><br>
* File: <strong>Startup.java</strong><br>
* Created: <strong>12 Oct 2019</strong><br>
*
* @author Leon Hofmeister
* @author Maximilian K&auml;fer
* @since Envoy v0.1-alpha
*/
public class Startup {
public static void main(String[] args) {
Config config = Config.getInstance();
if (args.length > 0) {
config.load(args);
} else {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
try {
Properties configProperties = new Properties();
configProperties.load(loader.getResourceAsStream("client.properties"));
config.load(configProperties);
} catch (IOException e) {
e.printStackTrace();
}
}
if (!config.isInitialized()) {
System.err.println("Server or port are not defined. Exiting...");
System.exit(1);
}
String userName = JOptionPane.showInputDialog("Please enter your username");
if (userName == null || userName.isEmpty()) {
System.err.println("User name is not set or empty. Exiting...");
System.exit(1);
}
Client client = new Client(config, userName);
LocalDB localDB = new LocalDB(client.getSender());
try {
localDB.initializeDBFile(config.getLocalDB());
} catch (EnvoyException e) {
e.printStackTrace();
JOptionPane.showMessageDialog(null,
"Error while loading local database: " + e.toString() + "\nChats will not be stored locally.",
"Local DB error",
JOptionPane.WARNING_MESSAGE);
}
EventQueue.invokeLater(() -> {
try {
ChatWindow frame = new ChatWindow(client, localDB);
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
});
}
}

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src/main/java/envoy/client/ui/UserListRenderer.java Normal file
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package envoy.client.ui;
import java.awt.Component;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.ListCellRenderer;
import envoy.schema.User;
import envoy.schema.User.UserStatus;
/**
* Defines how the {@code UserList} is displayed.
*
* Project: <strong>envoy-client</strong><br>
* File: <strong>UserListRenderer.java</strong><br>
* Created: <strong>12 Oct 2019</strong><br>
*
* @author Kai S. K. Engelbart
* @author Maximilian K&auml;fer
* @since Envoy v0.1-alpha
*/
public class UserListRenderer extends JLabel implements ListCellRenderer<User> {
private static final long serialVersionUID = 5164417379767181198L;
@Override
public Component getListCellRendererComponent(JList<? extends User> list, User value, int index, boolean isSelected,
boolean cellHasFocus) {
if (isSelected) {
setBackground(list.getSelectionBackground());
setForeground(list.getSelectionForeground());
} else {
setBackground(list.getBackground());
setForeground(list.getForeground());
}
// Enable background rendering
setOpaque(true);
final String name = value.getName();
final UserStatus status = value.getStatus();
switch (status) {
case ONLINE:
setText(String.format(
"<html><p style=\"color:#03fc20\"><b><small>%s</b></small><br><p style=\"color:white\">%s</html>",
status,
name));
break;
case OFFLINE:
setText(String.format(
"<html><p style=\"color:#fc0303\"><b><small>%s</b></small><br><p style=\"color:white\">%s</html>",
status,
name));
break;
}
return this;
}
}

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server=http://kske.feste-ip.net
port=43315
localDB=.\\localDB