feat: user stt language

src/lib/components/workspace/Knowledge/KnowledgeBase.svelte

@@ -26,10 +26,7 @@
 		updateFileFromKnowledgeById,
 		updateKnowledgeById
 	} from '$lib/apis/knowledge';
-
-	import { transcribeAudio } from '$lib/apis/audio';
 	import { blobToFile } from '$lib/utils';
-	import { processFile } from '$lib/apis/retrieval';
 
 	import Spinner from '$lib/components/common/Spinner.svelte';
 	import Files from './KnowledgeBase/Files.svelte';
@@ -158,7 +155,18 @@
 		knowledge.files = [...(knowledge.files ?? []), fileItem];
 
 		try {
-			const uploadedFile = await uploadFile(localStorage.token, file).catch((e) => {
+			// If the file is an audio file, provide the language for STT.
+			let metadata = null;
+			if (
+				(file.type.startsWith('audio/') || file.type.startsWith('video/')) &&
+				$settings?.audio?.stt?.language
+			) {
+				metadata = {
+					language: $settings?.audio?.stt?.language
+				};
+			}
+
+			const uploadedFile = await uploadFile(localStorage.token, file, metadata).catch((e) => {
 				toast.error(`${e}`);
 				return null;
 			});