move ffmpeg code to its own file, rename types folder to lib

app/lib/middleware.ts

@@ -0,0 +1,107 @@
+import type {RequestHandler as Middleware, NextFunction} from "express";
+
+import fs from "fs";
+import process from "process";
+
+import {extension, videoExtensions, imageExtensions} from "./lib";
+import {db, MediaParams, insertToDB} from "./db";
+import {ffmpegDownscale} from "./ffmpeg";
+
+export const checkAuth: Middleware = (req, res, next) => {
+  if (!req.user) {
+    return res.status(401);
+  }
+  next();
+};
+
+/**Checks shareX auth key */
+export const checkSharexAuth: Middleware = (req, res, next) => {
+  const auth = process.env.EBAPI_KEY || process.env.EBPASS || "pleaseSetAPI_KEY";
+  let key = null;
+  
+  if (req.headers["key"]) {
+    key = req.headers["key"];
+  } else {
+    return res.status(400).send("{success: false, message: \"No key provided\", fix: \"Provide a key\"}");
+  }
+  
+  if (auth != key) {
+    return res.status(401).send("{success: false, message: '\"'Invalid key\", fix: \"Provide a valid key\"}");
+  }
+  
+  const shortKey = key.substr(0, 3) + "..."; 
+  console.log(`Authenicated user with key: ${shortKey}`);
+  
+  next();
+};
+
+/**Creates oembed json file for embed metadata */
+export const createEmbedData: Middleware = (req, res, next) => {
+  const files = req.files as Express.Multer.File[];
+  for (const file in files) {
+    const nameAndExtension = extension(files[file].originalname);
+    const oembed = {
+      type: "video",
+      version: "1.0",
+      provider_name: "embedder",
+      provider_url: "https://github.com/WaveringAna/embedder",
+      cache_age: 86400,
+      html: `<iframe src='${req.protocol}://${req.get("host")}/gifv/${nameAndExtension[0]}${nameAndExtension[1]}'></iframe>`,
+      width: 640,
+      height: 360
+    };
+  
+    fs.writeFile(`uploads/oembed-${nameAndExtension[0]}${nameAndExtension[1]}.json`, JSON.stringify(oembed), function (err) {
+      if (err) return next(err);
+      console.log(`oembed file created ${nameAndExtension[0]}${nameAndExtension[1]}.json`);
+    });
+  }
+  next();
+};
+
+/**Creates a 720p copy of video for smaller file */
+export const convertTo720p: Middleware = (req, res, next) => {
+  const files = req.files as Express.Multer.File[];
+  console.log("convert to 720p running");
+  for (const file in files) {
+    const nameAndExtension = extension(files[file].originalname);
+
+    //Skip if not a video
+    if (!videoExtensions.includes(nameAndExtension[1]) && nameAndExtension[1] !== ".gif") {
+      console.log(`${files[file].originalname} is not a video file`);
+      console.log(nameAndExtension[1]);
+      continue;
+    }
+
+    console.log(`Creating 720p for ${files[file].originalname}`);
+
+    ffmpegDownscale(`uploads/${nameAndExtension[0]}${nameAndExtension[1]}`, nameAndExtension[0], nameAndExtension[1]).then(() => {
+      //Nothing for now, can fire event flag that it is done to front end when react conversion is done
+    }).catch((error) => {
+      console.log(`Error: ${error}`);
+    });
+  }
+
+  next();
+};
+
+/**Middleware for handling uploaded files. Inserts it into the database */
+export const handleUpload: Middleware = (req, res, next) => {
+  if (!req.file && !req.files) {
+    console.log("No files were uploaded");
+    return res.status(400).send("No files were uploaded.");
+  }
+  
+  const files = (req.files) ? req.files as Express.Multer.File[] : req.file; //Check if a single file was uploaded or multiple
+  const username = (req.user) ? req.user.username : "sharex";                //if no username was provided, we can presume that it is sharex
+  const expireDate: Date = (req.body.expire) ? new Date(Date.now() + (req.body.expire * 24 * 60 * 60 * 1000)) : null;
+
+  if (files instanceof Array) {
+    for (const file in files) {
+      insertToDB(files[file].filename, expireDate, username);
+    }
+  } else
+    insertToDB(files.filename, expireDate, username);
+
+  next();
+};