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

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 relativeOptimizedPath: string = await GenerateOptimized(
            relativeFilePath
          );

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

          return {
            type,
            size: file.size,
            src: GenerateUrl([
              FolderPaths.StaticPath,
              FolderPaths.JobsFolder,
              jobid,
              file.filename,
            ]),
            thumbnail: GenerateUrl([
              FolderPaths.StaticPath,
              FolderPaths.JobsFolder,
              jobid,
              relativeThumbPath,
            ]),
            optimized: GenerateUrl([
              FolderPaths.StaticPath,
              FolderPaths.JobsFolder,
              jobid,
              relativeOptimizedPath,
            ]),
            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 relativeOptimizedPath: string = await GenerateOptimized(
            relativeFilePath
          );
          const type: core.FileTypeResult | undefined = await ft.fromFile(
            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,
            ]),
            optimized: GenerateUrl([
              FolderPaths.StaticPath,
              FolderPaths.JobsFolder,
              jobid,
              relativeOptimizedPath,
            ]),
            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);
  }
}