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Example.java
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Example.java
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package it.tdlight.example;
import it.tdlight.Init;
import it.tdlight.Log;
import it.tdlight.Slf4JLogMessageHandler;
import it.tdlight.client.APIToken;
import it.tdlight.client.AuthenticationSupplier;
import it.tdlight.client.SimpleAuthenticationSupplier;
import it.tdlight.client.SimpleTelegramClient;
import it.tdlight.client.SimpleTelegramClientBuilder;
import it.tdlight.client.SimpleTelegramClientFactory;
import it.tdlight.client.TDLibSettings;
import it.tdlight.jni.TdApi;
import it.tdlight.jni.TdApi.AuthorizationState;
import it.tdlight.jni.TdApi.CreatePrivateChat;
import it.tdlight.jni.TdApi.FormattedText;
import it.tdlight.jni.TdApi.GetChat;
import it.tdlight.jni.TdApi.InputMessageText;
import it.tdlight.jni.TdApi.Message;
import it.tdlight.jni.TdApi.MessageContent;
import it.tdlight.jni.TdApi.MessageSenderUser;
import it.tdlight.jni.TdApi.SendMessage;
import it.tdlight.jni.TdApi.TextEntity;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.concurrent.TimeUnit;
/**
* Example class for TDLight Java
* <p>
* <a href="https://tdlight-team.github.io/tdlight-docs">The documentation of the TDLight functions can be found here</a>
*/
public final class Example {
public static void main(String[] args) throws Exception {
long adminId = Integer.getInteger("it.tdlight.example.adminid", 667900586);
// Initialize TDLight native libraries
Init.init();
// Set the log level
Log.setLogMessageHandler(1, new Slf4JLogMessageHandler());
// Create the client factory (You can create more than one client,
// BUT only a single instance of ClientFactory is allowed globally!
// You must reuse it if you want to create more than one client!)
try (SimpleTelegramClientFactory clientFactory = new SimpleTelegramClientFactory()) {
// Obtain the API token
//
// var apiToken = new APIToken(your-api-id-here, "your-api-hash-here");
//
APIToken apiToken = APIToken.example();
// Configure the client
TDLibSettings settings = TDLibSettings.create(apiToken);
// Configure the session directory.
// After you authenticate into a session, the authentication will be skipped from the next restart!
// If you want to ensure to match the authentication supplier user/bot with your session user/bot,
// you can name your session directory after your user id, for example: "tdlib-session-id12345"
Path sessionPath = Paths.get("example-tdlight-session");
settings.setDatabaseDirectoryPath(sessionPath.resolve("data"));
settings.setDownloadedFilesDirectoryPath(sessionPath.resolve("downloads"));
// Prepare a new client builder
SimpleTelegramClientBuilder clientBuilder = clientFactory.builder(settings);
// Configure the authentication info
// Replace with AuthenticationSupplier.consoleLogin(), or .user(xxx), or .bot(xxx);
SimpleAuthenticationSupplier<?> authenticationData = AuthenticationSupplier.testUser(7381);
// This is an example, remove this line to use the real telegram datacenters!
settings.setUseTestDatacenter(true);
// Create and start the client
try (var app = new ExampleApp(clientBuilder, authenticationData, adminId)) {
// Get me
TdApi.User me = app.getClient().getMeAsync().get(1, TimeUnit.MINUTES);
// Create the "saved messages" chat
var savedMessagesChat = app.getClient().send(new CreatePrivateChat(me.id, true)).get(1, TimeUnit.MINUTES);
// Send a test message
var req = new SendMessage();
req.chatId = savedMessagesChat.id;
var txt = new InputMessageText();
txt.text = new FormattedText("TDLight test", new TextEntity[0]);
req.inputMessageContent = txt;
Message result = app.getClient().sendMessage(req, true).get(1, TimeUnit.MINUTES);
System.out.println("Sent message:" + result);
}
}
}
public static class ExampleApp implements AutoCloseable {
private final SimpleTelegramClient client;
/**
* Admin user id, used by the stop command example
*/
private final long adminId;
public ExampleApp(SimpleTelegramClientBuilder clientBuilder,
SimpleAuthenticationSupplier<?> authenticationData,
long adminId) {
this.adminId = adminId;
// Add an example update handler that prints when the bot is started
clientBuilder.addUpdateHandler(TdApi.UpdateAuthorizationState.class, this::onUpdateAuthorizationState);
// Add an example command handler that stops the bot
clientBuilder.addCommandHandler("stop", this::onStopCommand);
// Add an example update handler that prints every received message
clientBuilder.addUpdateHandler(TdApi.UpdateNewMessage.class, this::onUpdateNewMessage);
// Build the client
this.client = clientBuilder.build(authenticationData);
}
@Override
public void close() throws Exception {
client.close();
}
public SimpleTelegramClient getClient() {
return client;
}
/**
* Print the bot status
*/
private void onUpdateAuthorizationState(TdApi.UpdateAuthorizationState update) {
AuthorizationState authorizationState = update.authorizationState;
if (authorizationState instanceof TdApi.AuthorizationStateReady) {
System.out.println("Logged in");
} else if (authorizationState instanceof TdApi.AuthorizationStateClosing) {
System.out.println("Closing...");
} else if (authorizationState instanceof TdApi.AuthorizationStateClosed) {
System.out.println("Closed");
} else if (authorizationState instanceof TdApi.AuthorizationStateLoggingOut) {
System.out.println("Logging out...");
}
}
/**
* Print new messages received via updateNewMessage
*/
private void onUpdateNewMessage(TdApi.UpdateNewMessage update) {
// Get the message content
MessageContent messageContent = update.message.content;
// Get the message text
String text;
if (messageContent instanceof TdApi.MessageText messageText) {
// Get the text of the text message
text = messageText.text.text;
} else {
// We handle only text messages, the other messages will be printed as their type
text = String.format("(%s)", messageContent.getClass().getSimpleName());
}
long chatId = update.message.chatId;
// Get the chat title
client.send(new TdApi.GetChat(chatId))
// Use the async completion handler, to avoid blocking the TDLib response thread accidentally
.whenCompleteAsync((chatIdResult, error) -> {
if (error != null) {
// Print error
System.err.printf("Can't get chat title of chat %s%n", chatId);
error.printStackTrace(System.err);
} else {
// Get the chat name
String title = chatIdResult.title;
// Print the message
System.out.printf("Received new message from chat %s (%s): %s%n", title, chatId, text);
}
});
}
/**
* Close the bot if the /stop command is sent by the administrator
*/
private void onStopCommand(TdApi.Chat chat, TdApi.MessageSender commandSender, String arguments) {
// Check if the sender is the admin
if (isAdmin(commandSender)) {
// Stop the client
System.out.println("Received stop command. closing...");
client.sendClose();
}
}
/**
* Check if the command sender is admin
*/
public boolean isAdmin(TdApi.MessageSender sender) {
if (sender instanceof MessageSenderUser messageSenderUser) {
return messageSenderUser.userId == adminId;
} else {
return false;
}
}
}
}