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

/** @description Bills will use the hierarchy of PDFs stored under the Job first, and then the Bills folder. */
export async function BillsListMedia(req: Request, res: Response) {
  const jobid: string = (req.body.jobid || "").trim();
  //const vendorid: string = (req.body.vendorid || "").trim();
  const invoice_number: string = (req.body.invoice_number || "").trim();
  let ret: MediaFile[];
  //Ensure all directories exist.
  await fs.ensureDir(PathToRoBillsFolder(jobid));

  if (req.files) {
    ret = await Promise.all(
      (req.files as Express.Multer.File[]).map(async (file) => {
        const relativeFilePath: string = path.join(PathToRoBillsFolder(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,
            FolderPaths.BillsSubDir,
            file.filename
          ]),
          thumbnail: GenerateUrl([
            FolderPaths.StaticPath,
            FolderPaths.JobsFolder,
            jobid,
            FolderPaths.BillsSubDir,
            relativeThumbPath
          ]),
          thumbnailHeight: 250,
          thumbnailWidth: 250,
          filename: file.filename,
          relativeFilePath
        };
      })
    );
  } else {
    let filesList: fs.Dirent[] = (
      await fs.readdir(PathToRoBillsFolder(jobid), {
        withFileTypes: true
      })
    ).filter(
      (f) =>
        f.isFile() &&
        !/(^|\/)\.[^\/\.]/g.test(f.name) &&
        (invoice_number !== "" ? f.name.toLowerCase().includes(invoice_number.toLowerCase()) : true) &&
        ListableChecker(f)
    );

    ret = await Promise.all(
      filesList.map(async (file) => {
        const relativeFilePath: string = path.join(PathToRoBillsFolder(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, FolderPaths.BillsSubDir, file.name]),
          thumbnail: GenerateUrl([
            FolderPaths.StaticPath,
            FolderPaths.JobsFolder,
            jobid,
            FolderPaths.BillsSubDir,
            relativeThumbPath
          ]),
          thumbnailHeight: 250,
          thumbnailWidth: 250,
          filename: file.name,
          relativeFilePath
        };
      })
    );
  }

  res.json(ret);
}