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import { useEffect } from "react";
import { toast } from "sonner";
import { useEditor } from "@/hooks/use-editor";
import { processMediaAssets } from "@/lib/media/processing";
import { buildElementFromMedia } from "@/lib/timeline/element-utils";
import { AddMediaAssetCommand } from "@/lib/commands/media";
import { InsertElementCommand } from "@/lib/commands/timeline";
import { BatchCommand } from "@/lib/commands";
import { TIMELINE_CONSTANTS } from "@/constants/timeline-constants";
import { isTypableDOMElement } from "@/utils/browser";
import type { MediaType } from "@/types/assets";
const MEDIA_MIME_PREFIXES: MediaType[] = ["image", "video", "audio"];
function isMediaMimeType({ type }: { type: string }): boolean {
return MEDIA_MIME_PREFIXES.some((prefix) => type.startsWith(`${prefix}/`));
}
function extractMediaFilesFromClipboard({
clipboardData,
}: {
clipboardData: DataTransfer | null;
}): File[] {
if (!clipboardData?.items) return [];
const files: File[] = [];
for (const item of clipboardData.items) {
if (item.kind !== "file") continue;
if (!isMediaMimeType({ type: item.type })) continue;
const file = item.getAsFile();
if (file) files.push(file);
}
return files;
}
export function usePasteMedia() {
const editor = useEditor();
useEffect(() => {
const handlePaste = async (event: ClipboardEvent) => {
const activeElement = document.activeElement as HTMLElement;
if (activeElement && isTypableDOMElement({ element: activeElement })) {
return;
}
const files = extractMediaFilesFromClipboard({
clipboardData: event.clipboardData,
});
if (files.length === 0) return;
event.preventDefault();
const activeProject = editor.project.getActive();
if (!activeProject) return;
try {
const processedAssets = await processMediaAssets({ files });
const startTime = editor.playback.getCurrentTime();
for (const asset of processedAssets) {
const addMediaCmd = new AddMediaAssetCommand(
activeProject.metadata.id,
asset,
);
const assetId = addMediaCmd.getAssetId();
const duration =
asset.duration ?? TIMELINE_CONSTANTS.DEFAULT_ELEMENT_DURATION;
const trackType = asset.type === "audio" ? "audio" : "video";
const element = buildElementFromMedia({
mediaId: assetId,
mediaType: asset.type,
name: asset.name,
duration,
startTime,
buffer:
asset.type === "audio"
? new AudioBuffer({ length: 1, sampleRate: 44100 })
: undefined,
});
const insertCmd = new InsertElementCommand({
element,
placement: { mode: "auto", trackType },
});
const batchCmd = new BatchCommand([addMediaCmd, insertCmd]);
editor.command.execute({ command: batchCmd });
}
} catch (error) {
console.error("Failed to paste media:", error);
toast.error("Failed to paste media");
}
};
window.addEventListener("paste", handlePaste);
return () => window.removeEventListener("paste", handlePaste);
}, [editor]);
}
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