import { Request, Response } from "express";
import fs from "fs-extra";
import path from "path";
import GenerateThumbnail from "../util/generateThumbnail";
import GenerateUrl from "../util/MediaUrlGen";
import { FolderPaths } from "../util/serverInit";

export async function JobsListMedia(req: Request, res: Response) {
  const ro_number: string = (req.body.ro_number || "").trim();
  await fs.ensureDir(path.join(FolderPaths.Jobs, ro_number));
  const filesList: fs.Dirent[] = (
    await fs.readdir(path.join(FolderPaths.Jobs, ro_number), {
      withFileTypes: true,
    })
  ).filter((f) => f.isFile() && !/(^|\/)\.[^\/\.]/g.test(f.name));

  const thumbnailGenerationQueue: Promise<void>[] = [];

  const ret: MediaFile[] = filesList.map((file) => {
    thumbnailGenerationQueue.push(
      GenerateThumbnail(
        path.join(FolderPaths.Jobs, ro_number, file.name),
        path.join(
          FolderPaths.Jobs,
          ro_number,
          FolderPaths.ThumbsSubDir,
          file.name
        )
      )
    );
    return {
      src: GenerateUrl([
        FolderPaths.StaticPath,
        FolderPaths.JobsFolder,
        ro_number,
        file.name,
      ]),
      thumb: GenerateUrl([
        FolderPaths.StaticPath,
        FolderPaths.JobsFolder,
        ro_number,
        FolderPaths.ThumbsSubDir,
        file.name,
      ]),
    };
  });
  await Promise.all(thumbnailGenerationQueue);

  res.json(ret);
}

interface MediaFile {
  src: string;
  thumb: string;
}