1 files changed, 40 insertions, 0 deletions
diff --git a/apps/web/src/lib/subtitles/insert.ts b/apps/web/src/lib/subtitles/insert.ts
new file mode 100644
index 00000000..1bb04fc8
--- /dev/null
+++ b/apps/web/src/lib/subtitles/insert.ts
@@ -0,0 +1,40 @@
+import type { EditorCore } from "@/core";
+import {
+	AddTrackCommand,
+	BatchCommand,
+	InsertElementCommand,
+} from "@/lib/commands";
+import { buildSubtitleTextElement } from "./build-subtitle-text-element";
+import type { SubtitleCue } from "./types";
+
+export function insertCaptionChunksAsTextTrack({
+	editor,
+	captions,
+}: {
+	editor: EditorCore;
+	captions: SubtitleCue[];
+}): string | null {
+	if (captions.length === 0) {
+		return null;
+	}
+
+	const addTrackCommand = new AddTrackCommand("text", 0);
+	const trackId = addTrackCommand.getTrackId();
+	const canvasSize = editor.project.getActive().settings.canvasSize;
+	const insertCommands = captions.map(
+		(caption, index) =>
+			new InsertElementCommand({
+				placement: { mode: "explicit", trackId },
+				element: buildSubtitleTextElement({
+					index,
+					caption,
+					canvasSize,
+				}),
+			}),
+	);
+	editor.command.execute({
+		command: new BatchCommand([addTrackCommand, ...insertCommands]),
+	});
+
+	return trackId;
+}