1 files changed, 70 insertions, 0 deletions
diff --git a/apps/web/src/export/index.ts b/apps/web/src/export/index.ts
new file mode 100644
index 00000000..c5c522b3
--- /dev/null
+++ b/apps/web/src/export/index.ts
@@ -0,0 +1,70 @@
+import type { FrameRate } from "opencut-wasm";
+import { EXPORT_MIME_TYPES } from "./mime-types";
+
+export const EXPORT_QUALITY_VALUES = [
+	"low",
+	"medium",
+	"high",
+	"very_high",
+] as const;
+
+export const EXPORT_FORMAT_VALUES = ["mp4", "webm"] as const;
+
+export type ExportFormat = (typeof EXPORT_FORMAT_VALUES)[number];
+export type ExportQuality = (typeof EXPORT_QUALITY_VALUES)[number];
+
+export interface ExportOptions {
+	format: ExportFormat;
+	quality: ExportQuality;
+	fps?: FrameRate;
+	includeAudio?: boolean;
+}
+
+export interface ExportResult {
+	success: boolean;
+	buffer?: ArrayBuffer;
+	error?: string;
+	cancelled?: boolean;
+}
+
+export interface ExportState {
+	isExporting: boolean;
+	progress: number;
+	result: ExportResult | null;
+}
+
+export function getExportMimeType({
+	format,
+}: {
+	format: ExportFormat;
+}): string {
+	return EXPORT_MIME_TYPES[format];
+}
+
+export function getExportFileExtension({
+	format,
+}: {
+	format: ExportFormat;
+}): string {
+	return `.${format}`;
+}
+
+export function downloadBuffer({
+	buffer,
+	filename,
+	mimeType,
+}: {
+	buffer: ArrayBuffer;
+	filename: string;
+	mimeType: string;
+}): void {
+	const blob = new Blob([buffer], { type: mimeType });
+	const url = URL.createObjectURL(blob);
+	const downloadLink = document.createElement("a");
+	downloadLink.href = url;
+	downloadLink.download = filename;
+	document.body.appendChild(downloadLink);
+	downloadLink.click();
+	document.body.removeChild(downloadLink);
+	URL.revokeObjectURL(url);
+}