import { createClient, type BufferLike } from "webdav";
import fs from "fs/promises";
import path from "path";

export const REMOTE_DIR = "/";
export const LOCAL_DIR = path.resolve("./downloads");

export async function downloadMissing(remoteDir: string = REMOTE_DIR) {
    await fs.mkdir(LOCAL_DIR, { recursive: true })
    const client = createClient(
        "https://nextcloud.papryk.com/public.php/dav/files/ckkL3Pg4X4Ye6pz",
        {
            username: "ckkL3Pg4X4Ye6pz",
            password: "",
        }
    );
    const contents = await client.getDirectoryContents(remoteDir);

    const exisitngFiles = await fs.readdir(LOCAL_DIR);

    const missing = contents.filter(f => !exisitngFiles.includes(f.basename));

    console.log(missing);

    let i = 0;
    for (const item of missing) {
        const result = await client.getFileContents(item.filename, {
            format: "binary",
        });

        let buffer: Buffer;

        if (typeof result === "string") {
            buffer = Buffer.from(result);
        } else if (Buffer.isBuffer(result)) {
            buffer = result;
        } else if (result instanceof ArrayBuffer) {
            buffer = Buffer.from(new Uint8Array(result));
        } else if ("data" in result) {
            const data = result.data;
            if (typeof data === "string") {
                buffer = Buffer.from(data);
            } else if (Buffer.isBuffer(data)) {
                buffer = data;
            } else if (data instanceof ArrayBuffer) {
                buffer = Buffer.from(new Uint8Array(data));
            } else {
                buffer = Buffer.from(data as any);
            }
        } else {
            buffer = Buffer.from(result as any);
        }

        const localPath = path.resolve(path.join(LOCAL_DIR, item.filename))

        await fs.writeFile(localPath, buffer);
        i++;
        console.log(`downloaded ${i}/${missing.length} ${item.basename}`)
    }


}