import { t } from "@lingui/core/macro";
import { artifactUrl } from "./artifact-url";

export type ArtifactTarget = { botId: string } | { groupId: string };

export async function fetchArtifactBytes(artifactId: string): Promise<Uint8Array> {
  const response = await fetch(artifactUrl(artifactId), { credentials: "include" });
  if (!response.ok) throw new Error(t`Could not load this file.`);
  return new Uint8Array(await response.arrayBuffer());
}

export function downloadArtifactBytes(name: string, mimeType: string, bytes: Uint8Array): void {
  const blob = new Blob([new Uint8Array(bytes)], { type: mimeType });
  const url = URL.createObjectURL(blob);
  saveUrl(url, name);
  window.setTimeout(() => URL.revokeObjectURL(url), 60_000);
}

/** Lets the browser stream the download from the artifact route instead of buffering it. */
export function downloadArtifact(artifactId: string, name: string): void {
  saveUrl(artifactUrl(artifactId, { download: true }), name);
}

function saveUrl(url: string, name: string) {
  const anchor = document.createElement("a");
  anchor.href = url;
  anchor.download = name;
  anchor.click();
}