Configure placeholder message when a file needs to be processed

Author: rob93c

src/main/java/com/github/stickerifier/stickerify/bot/Stickerify.java

@@ -8,6 +8,7 @@
 import static com.github.stickerifier.stickerify.telegram.Answer.FILE_ALREADY_VALID;
 import static com.github.stickerifier.stickerify.telegram.Answer.FILE_READY;
 import static com.github.stickerifier.stickerify.telegram.Answer.FILE_TOO_LARGE;
+import static com.github.stickerifier.stickerify.telegram.Answer.PROCESSING;
 import static com.pengrad.telegrambot.model.request.ParseMode.MarkdownV2;
 import static java.util.HashSet.newHashSet;
 import static java.util.concurrent.Executors.newThreadPerTaskExecutor;
@@ -23,14 +24,15 @@
 import com.pengrad.telegrambot.TelegramBot;
 import com.pengrad.telegrambot.TelegramException;
 import com.pengrad.telegrambot.UpdatesListener;
-import com.pengrad.telegrambot.model.LinkPreviewOptions;
 import com.pengrad.telegrambot.model.Update;
 import com.pengrad.telegrambot.model.request.ReplyParameters;
+import com.pengrad.telegrambot.model.request.richmessages.InputRichMessage;
 import com.pengrad.telegrambot.request.BaseRequest;
 import com.pengrad.telegrambot.request.GetFile;
 import com.pengrad.telegrambot.request.GetUpdates;
 import com.pengrad.telegrambot.request.SendDocument;
-import com.pengrad.telegrambot.request.SendMessage;
+import com.pengrad.telegrambot.request.richmessages.SendRichMessage;
+import com.pengrad.telegrambot.request.richmessages.SendRichMessageDraft;
 import com.pengrad.telegrambot.response.BaseResponse;
 import org.slf4j.event.Level;
 
@@ -54,6 +56,7 @@ public record Stickerify(TelegramBot bot, Executor executor) implements UpdatesL
 	private static final StructuredLogger LOGGER = new StructuredLogger(Stickerify.class);
 	private static final String BOT_TOKEN = System.getenv("STICKERIFY_TOKEN");
 	private static final ThreadFactory VIRTUAL_THREAD_FACTORY = Thread.ofVirtual().name("Virtual-", 0).factory();
+	private static final InputRichMessage PROCESSING_MESSAGE = new InputRichMessage().html(PROCESSING.getText());
 
 	/**
 	 * Instantiate the bot processing requests with virtual threads.
@@ -127,8 +130,11 @@ private void answerFile(TelegramRequest request, TelegramFile file) {
 
 	private void answerFile(TelegramRequest request, String fileId) {
 		Set<Path> pathsToDelete = newHashSet(2);
+		var processingMessage = new SendRichMessageDraft(request.getChatId(), 1, PROCESSING_MESSAGE);
 
 		try {
+			execute(processingMessage);
+
 			var originalFile = retrieveFile(fileId);
 			pathsToDelete.add(originalFile.toPath());
 
@@ -209,12 +215,9 @@ private void answerText(TelegramRequest request) {
 	}
 
 	private void answerText(Answer answer, TelegramRequest request) {
-		var previewOptions = new LinkPreviewOptions().isDisabled(answer.isDisableLinkPreview());
-
-		var answerWithText = new SendMessage(request.getChatId(), answer.getText())
+		var answerWithText = new SendRichMessage(request.getChatId(), new InputRichMessage().markdown(answer.getText()))
 				.replyParameters(new ReplyParameters(request.getMessageId()))
-				.parseMode(MarkdownV2)
-				.linkPreviewOptions(previewOptions);
+				.disableNotification(true);
 
 		try {
 			execute(answerWithText);

src/main/java/com/github/stickerifier/stickerify/telegram/Answer.java

@@ -6,60 +6,53 @@
 public enum Answer {
 
 	HELP("""
-			Send me the media you want to convert and I will take care of the rest\\.
+			Send me the media you want to convert and I will take care of the rest.
 
 			Based on what you send, I will answer the following:
-			\\- the converted media, if you sent a supported file \\(images, gifs, standard and video stickers are supported\\)
-			\\- no file, if you sent a media already suiting Telegram's requirements
-			\\- an error message, if you sent either an unsupported or a corrupted file
-			\\- an informative message for any message without a file
+			- the converted media, if you sent a supported file (images, gifs, standard and video stickers are supported)
+			- no file, if you sent a media already suiting Telegram's requirements
+			- an error message, if you sent either an unsupported or a corrupted file
+			- an informative message for any message without a file
 
-			Once the file is ready, head to [Stickers](https://t.me/Stickers) to create a new sticker\\.
+			Once the file is ready, head to [Stickers](https://t.me/Stickers) to create a new sticker.
 			"""),
 	FILE_READY("""
 			Your sticker file is ready\\!
 			Head to [Stickers](https://t.me/Stickers) to create a new sticker\\.
 			"""),
 	FILE_ALREADY_VALID("""
-			The media you sent was already suitable to be a Telegram sticker\\.
-			Send it to [Stickers](https://t.me/Stickers) to add it as a new sticker\\.
+			The media you sent was already suitable to be a Telegram sticker.
+			Send it to [Stickers](https://t.me/Stickers) to add it as a new sticker.
 			"""),
 	FILE_TOO_LARGE("""
-			The file can't be converted because Telegram bots can't handle files larger than 20 MB at the moment: please send a smaller one\\.
+			The file can't be converted because Telegram bots can't handle files larger than 20 MB at the moment: please send a smaller one.
 			"""),
 	ABOUT("""
-			This bot is open source, check it out on [Github](https://github.com/Stickerifier/Stickerify)\\.
+			This bot is open source, check it out on [Github](https://github.com/Stickerifier/Stickerify).
 
-			Looking for sticker packs? Try [MeminiCustom](https://t.me/addstickers/MeminiCustom) and [VideoMemini](https://t.me/addstickers/VideoMemini)\\!
+			Looking for sticker packs? Try [MeminiCustom](https://t.me/addstickers/MeminiCustom) and [VideoMemini](https://t.me/addstickers/VideoMemini)!
 			"""),
 	ERROR("""
-			The file conversion was unsuccessful: only images, gifs, standard and video stickers are supported\\.
+			The file conversion was unsuccessful: only images, gifs, standard and video stickers are supported.
 
-			If you think it should have worked, please report the issue on [Github](https://github.com/Stickerifier/Stickerify/issues/new/choose)\\.
-			""", true),
+			If you think it should have worked, please report the issue on [Github](https://github.com/Stickerifier/Stickerify/issues/new/choose).
+			"""),
 	PRIVACY_POLICY("""
-			You can view our privacy policy by visiting [this link](https://stickerifier.github.io/Stickerify/PRIVACY_POLICY.html)\\.
+			You can view our privacy policy by visiting [this link](https://stickerifier.github.io/Stickerify/PRIVACY_POLICY.html).
 
-			If you have any questions or concerns, feel free to reach out to us\\.
+			If you have any questions or concerns, feel free to reach out to us.
+			"""),
+	PROCESSING("""
+			<tg-thinking>Processing file...</tg-thinking>
 			""");
 
 	private final String text;
-	private final boolean disableLinkPreview;
 
 	Answer(String text) {
-		this(text, false);
-	}
-
-	Answer(String text, boolean disableLinkPreview) {
 		this.text = text;
-		this.disableLinkPreview = disableLinkPreview;
 	}
 
 	public String getText() {
 		return text;
 	}
-
-	public boolean isDisableLinkPreview() {
-		return disableLinkPreview;
-	}
 }