import { Request, Response } from "express";
import ft from "file-type";
import core from "file-type/core";
import fs from "fs-extra";
import { logger } from "../server";
import GenerateUrl from "../util/MediaUrlGen";
import GenerateThumbnail from "../util/generateThumbnail";
import MediaFile from "../util/interfaces/MediaFile";
import ListableChecker from "../util/listableChecker";
import { PathToRoFolder } from "../util/pathGenerators";
import { FolderPaths, JobRelativeFilePath } from "../util/serverInit";

export async function JobsListMedia(req: Request, res: Response) {
  const jobid: string = (req.body.jobid || "").trim();
  await fs.ensureDir(PathToRoFolder(jobid));
  logger.debug("Listing media for job: " + PathToRoFolder(jobid));
  let ret: MediaFile[];
  try {
    if (req.files) {
      //We just uploaded files, we're going to send only those back.
      ret = await Promise.all(
        (req.files as Express.Multer.File[]).map(async (file) => {
          const relativeFilePath: string = JobRelativeFilePath(jobid, file.filename);

          const relativeThumbPath: string = await GenerateThumbnail(relativeFilePath);

          const type: core.FileTypeResult | undefined = await ft.fileTypeFromFile(relativeFilePath);

          return {
            type,
            size: file.size,
            src: GenerateUrl([FolderPaths.StaticPath, FolderPaths.JobsFolder, jobid, file.filename]),
            thumbnail: GenerateUrl([FolderPaths.StaticPath, FolderPaths.JobsFolder, jobid, relativeThumbPath]),
            thumbnailHeight: 250,
            thumbnailWidth: 250,
            filename: file.filename,
            relativeFilePath
          };
        })
      );
    } else {
      const filesList: fs.Dirent[] = (
        await fs.readdir(PathToRoFolder(jobid), {
          withFileTypes: true
        })
      ).filter((f) => f.isFile() && ListableChecker(f));

      ret = await Promise.all(
        filesList.map(async (file) => {
          const relativeFilePath: string = JobRelativeFilePath(jobid, file.name);

          const relativeThumbPath: string = await GenerateThumbnail(relativeFilePath);
          const type: core.FileTypeResult | undefined = await ft.fileTypeFromFile(relativeFilePath);
          const fileSize = await fs.stat(relativeFilePath);
          return {
            type,
            size: fileSize.size,
            src: GenerateUrl([FolderPaths.StaticPath, FolderPaths.JobsFolder, jobid, file.name]),
            thumbnail: GenerateUrl([FolderPaths.StaticPath, FolderPaths.JobsFolder, jobid, relativeThumbPath]),
            thumbnailHeight: 250,
            thumbnailWidth: 250,
            filename: file.name,
            relativeFilePath
          };
        })
      );
    }

    if (!res.headersSent) res.json(ret);
  } catch (error) {
    logger.error("Error listing job media.", { jobid, error });
    if (!res.headersSent) res.status(500).json(error);
  }
}