Refactor conversion logic to use mime type scoped value

Author: rob93c

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

@@ -10,10 +10,8 @@
 import static java.util.HashSet.newHashSet;
 import static java.util.concurrent.Executors.newThreadPerTaskExecutor;
 
-import com.github.stickerifier.stickerify.exception.BaseException;
 import com.github.stickerifier.stickerify.exception.CorruptedFileException;
 import com.github.stickerifier.stickerify.exception.FileOperationException;
-import com.github.stickerifier.stickerify.exception.MediaException;
 import com.github.stickerifier.stickerify.exception.TelegramApiException;
 import com.github.stickerifier.stickerify.logger.StructuredLogger;
 import com.github.stickerifier.stickerify.media.MediaHelper;
@@ -148,10 +146,10 @@ private void answerFile(TelegramRequest request, String fileId) {
 
 				execute(answerWithFile);
 			}
-		} catch (TelegramApiException | MediaException e) {
-			processFailure(request, e, fileId);
 		} catch (InterruptedException e) {
 			Thread.currentThread().interrupt();
+		} catch (Exception e) {
+			processFailure(request, e, fileId);
 		} finally {
 			deleteTempFiles(pathsToDelete);
 		}
@@ -171,7 +169,7 @@ private File retrieveFile(String fileId) throws TelegramApiException, FileOperat
 		}
 	}
 
-	private void processFailure(TelegramRequest request, BaseException e, String fileId) {
+	private void processFailure(TelegramRequest request, Exception e, String fileId) {
 		if (e instanceof TelegramApiException telegramException) {
 			processTelegramFailure(telegramException, false);
 		}

src/main/java/com/github/stickerifier/stickerify/media/MediaHelper.java

@@ -1,5 +1,6 @@
 package com.github.stickerifier.stickerify.media;
 
+import static com.github.stickerifier.stickerify.logger.StructuredLogger.MIME_TYPE;
 import static com.github.stickerifier.stickerify.media.MediaConstraints.MATROSKA_FORMAT;
 import static com.github.stickerifier.stickerify.media.MediaConstraints.MAX_ANIMATION_DURATION_SECONDS;
 import static com.github.stickerifier.stickerify.media.MediaConstraints.MAX_ANIMATION_FILE_SIZE;
@@ -58,13 +59,44 @@ public final class MediaHelper {
 	 * Based on the type of passed-in file, it converts it into the proper media.
 	 * If no conversion was needed, {@code null} is returned.
 	 *
+	 * @param inputFile the file to convert
+	 * @return a resized and converted file
+	 * @throws Exception either if the file is not supported, if the conversion failed,
+	 * or if the current thread is interrupted while converting a video file
+	 */
+	public static @Nullable File convert(File inputFile) throws Exception {
+		var mimeType = detectMimeType(inputFile);
+		return ScopedValue.where(MIME_TYPE, mimeType).call(() -> performConversion(inputFile));
+	}
+
+	/**
+	 * Analyzes the file to detect its media type.
+	 *
+	 * @param file the file sent to the bot
+	 * @return the MIME type of the passed-in file
+	 * @throws MediaException if the file could not be read
+	 */
+	private static String detectMimeType(File file) throws MediaException {
+		try {
+			var mimeType = TIKA.detect(file);
+			LOGGER.at(Level.DEBUG).log("MIME type successfully detected");
+
+			return mimeType;
+		} catch (IOException e) {
+			LOGGER.at(Level.ERROR).addKeyValue("file_name", file.getName()).log("Unable to retrieve MIME type");
+			throw new MediaException(e);
+		}
+	}
+
+	/**
 	 * @param inputFile the file to convert
 	 * @return a resized and converted file
 	 * @throws MediaException if the file is not supported or if the conversion failed
 	 * @throws InterruptedException if the current thread is interrupted while converting a video file
+	 * @see MediaHelper#convert(File)
 	 */
-	public static @Nullable File convert(File inputFile) throws MediaException, InterruptedException {
-		var mimeType = detectMimeType(inputFile);
+	private static @Nullable File performConversion(File inputFile) throws MediaException, InterruptedException {
+		var mimeType = MIME_TYPE.get();
 
 		try {
 			if (isSupportedVideo(mimeType)) {
@@ -90,32 +122,13 @@ public final class MediaHelper {
 				return convertToWebp(inputFile);
 			}
 		} catch (MediaException e) {
-			LOGGER.at(Level.WARN).setCause(e).addKeyValue("mime_type", mimeType).log("The file with {} MIME type could not be converted", mimeType);
+			LOGGER.at(Level.WARN).setCause(e).log("The file could not be converted");
 			throw e;
 		}
 
 		throw new MediaException("The file with {} MIME type is not supported", mimeType);
 	}
 
-	/**
-	 * Analyzes the file to detect its media type.
-	 *
-	 * @param file the file sent to the bot
-	 * @return the MIME type of the passed-in file
-	 * @throws MediaException if the file could not be read
-	 */
-	private static String detectMimeType(File file) throws MediaException {
-		try {
-			var mimeType = TIKA.detect(file);
-			LOGGER.at(Level.DEBUG).addKeyValue("mime_type", mimeType).log("MIME type successfully detected");
-
-			return mimeType;
-		} catch (IOException e) {
-			LOGGER.at(Level.ERROR).addKeyValue("file_name", file.getName()).log("Unable to retrieve MIME type");
-			throw new MediaException(e);
-		}
-	}
-
 	/**
 	 * Checks if the MIME type corresponds to one of the supported video formats.
 	 *