Merge pull request 'usable application' (#1) from pieter/maotube:main into main

Reviewed-on: #1

.gitignore

@@ -1,3 +1,4 @@
 node_modules/
 videos/*
-
+!videos/.gitkeep
+tmp/

index.js

@@ -4,6 +4,9 @@ import bcrypt from "bcrypt";
 import fileUpload from "express-fileupload";
 import path from "path";
 import childProcess from "child_process";
+import levenshtein from "js-levenshtein";
+import cookieParser from "cookie-parser";
+import { fileURLToPath } from 'url';
 
 const users = [];
 let sessions = [];
@@ -13,14 +16,19 @@ function randomString(length) {
     const chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ123456789";
     let result = "";
     for (let i = 0; i < length; ++i) {
-        result += chars[chars.length * Math.random()];
+        result += chars[Math.floor(chars.length * Math.random())];
     }
     return result;
 }
 
+function dirname() {
+    return path.dirname(fileURLToPath(import.meta.url));
+}
+
 const app = express();
 app.use(cors());
 app.use(express.json());
+app.use(cookieParser());
 app.use(express.urlencoded({ extended: true }));
 
 app.use("/", express.static("public/"));
@@ -32,12 +40,12 @@ app.post("/api/register", async (req, res) => {
         return res.status(400).json({ ok: false, error: "bad request" });
     }
     const existingUser = users.find(user => user.username === username);
-    if (existingUser === undefined) {
+    if (existingUser !== undefined) {
         return res.status(400).json({ ok: false, error: "username taken" });
     }
     const passwordHash = await bcrypt.hash(password, 10);
     const id = users.length;
-    const user = { id, username, passwordHash };
+    const user = { id, username, password: passwordHash };
     users.push(user);
     return res.status(200).json({ ok: true, user });
 });
@@ -63,10 +71,33 @@ app.post("/api/login", async (req, res) => {
     return res.status(200).json({ ok: true, session });
 });
 
+
+app.get("/api/search", async (req, res) => {
+    const page = +req.query.page || 0;
+    const search = req.query.query;
+    if (!search) {
+        return res.status(400).json({ ok: false, error: "bad request" });
+    }
+    const [start, end] = [20 * page, 20 * (page + 1)];
+    const withDistance = videos
+        .map(video => ({dist: levenshtein(search, video.title), ...video}));
+    withDistance.sort((a, b) => a.dist - b.dist);
+    const returnedVideos = withDistance
+        .slice(start, end)
+        .map(video => {
+            const user = users.find(user => user.id === video.userId);
+            if (!user) {
+                return {...video, author: "[Liberal]"};
+            }
+            return {...video, author: user.username};
+        });
+    return res.status(200).json({ ok: true, videos: returnedVideos, total: videos.length });
+});
+
 function authorized() {
     return (req, res, next) => {
         const token = (() => {
-            if ("token" in req.cookies) {
+            if (req.cookies && "token" in req.cookies) {
                 return req.cookies["token"];
             } else if ("token" in req.query) {
                 return req.query["token"];
@@ -77,13 +108,13 @@ function authorized() {
             }
         })();
         if (token === null) {
-            return res.status(400).json({ ok: false, error: "unathorized" });
+            return res.status(400).json({ ok: false, error: "unauthorized" });
         }
         const session = sessions.find(session => session.token === token);
         if (session === undefined) {
-            return res.status(400).json({ ok: false, error: "unathorized" });
+            return res.status(400).json({ ok: false, error: "unauthorized" });
         }
-        const user = user.find(user => user.id === session.id);
+        const user = users.find(user => user.id === session.userId);
         if (user === undefined) {
             throw new Error("error: session with invalid userId");
         }
@@ -99,26 +130,27 @@ app.get("/api/logout", authorized(), (req, res) => {
 
 app.post("/api/upload_video", authorized(), fileUpload({ limits: { fileSize: 2 ** 26 }, useTempFiles: true }), async (req, res) => {
     const { title } = req.body;
-    if (req.files === undefined || req.files === null || req.files.length !== 1) {
+    if (!req.files || !req.files.video) {
         return res.status(400).json({ ok: false, error: "bad request" });
     }
-    if (req.files[0].mimetype !== "video/mp4") {
+    if (req.files.video.mimetype !== "video/mp4") {
         return res.status(400).json({ ok: false, error: "bad mimetype" });
     }
     const userId = req.user.id;
     const id = randomString(4);
-    const tempPath = req.files[0].tempFilePath;
-    const newPath = path.join("/videos", id, ".mp4");
+    const tempPath = req.files.video.tempFilePath;
+    const newPath = path.join(dirname(), "videos", `${id}.mp4`);
+    console.log(newPath);
 
     const exitCode = await new Promise((resolve, _reject) => {
-        const process = childProcess.spawn("HandBrakeCLI", ["-i", tempPath, "-o", newPath, "-Z", "Social 25 MB 5 Minutes 360p60"]);
+        const process = childProcess.spawn("HandBrakeCLI", ["-i", tempPath, "-o", newPath, "-Z", "Social 50 MB 10 Minutes 480p30"]);
         process.stderr.on("data", (data) => {
-            conole.error(data);
+            console.error(data.toString());
         });
         process.on("close", (code) => {
             resolve(code);
         })
-    });
+    })
     if (exitCode !== 0) {
         throw new Error("handbrake failed");
     }

package-lock.json

@@ -10,9 +10,11 @@
       "license": "ISC",
       "dependencies": {
         "bcrypt": "^5.1.1",
+        "cookie-parser": "^1.4.6",
         "cors": "^2.8.5",
         "express": "^4.18.2",
-        "express-fileupload": "^1.4.3"
+        "express-fileupload": "^1.4.3",
+        "js-levenshtein": "^1.1.6"
       }
     },
     "node_modules/@mapbox/node-pre-gyp": {
@@ -248,6 +250,26 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/cookie-parser": {
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/cookie-parser/-/cookie-parser-1.4.6.tgz",
+      "integrity": "sha512-z3IzaNjdwUC2olLIB5/ITd0/setiaFMLYiZJle7xg5Fe9KWAceil7xszYfHHBtDFYLSgJduS2Ty0P1uJdPDJeA==",
+      "dependencies": {
+        "cookie": "0.4.1",
+        "cookie-signature": "1.0.6"
+      },
+      "engines": {
+        "node": ">= 0.8.0"
+      }
+    },
+    "node_modules/cookie-parser/node_modules/cookie": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.1.tgz",
+      "integrity": "sha512-ZwrFkGJxUR3EIoXtO+yVE69Eb7KlixbaeAWfBQB9vVsNn/o+Yw69gBWSSDK825hQNdN+wF8zELf3dFNl/kxkUA==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
     "node_modules/cookie-signature": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
@@ -668,6 +690,14 @@
         "node": ">=8"
       }
     },
+    "node_modules/js-levenshtein": {
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/js-levenshtein/-/js-levenshtein-1.1.6.tgz",
+      "integrity": "sha512-X2BB11YZtrRqY4EnQcLX5Rh373zbK4alC1FW7D7MBhL2gtcC17cTnr6DmfHZeS0s2rTHjUTMMHfG7gO8SSdw+g==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/lru-cache": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",

package.json

@@ -12,8 +12,10 @@
   "type": "module",
   "dependencies": {
     "bcrypt": "^5.1.1",
+    "cookie-parser": "^1.4.6",
     "cors": "^2.8.5",
     "express": "^4.18.2",
-    "express-fileupload": "^1.4.3"
+    "express-fileupload": "^1.4.3",
+    "js-levenshtein": "^1.1.6"
   }
 }

public/header.js

@@ -0,0 +1,37 @@
+function displayHeader() {
+    const links = [
+        {
+            href: "/",
+            name: "Home",
+        },
+        {
+            href: "/register/",
+            name: "Register",
+        },
+        {
+            href: "/login/",
+            name: "Login",
+        },
+        {
+            href: "/upload/",
+            name: "Upload",
+        },
+    ].map(({name, href}) => {
+        if (href === window.location.pathname) {
+            return `<a href="${href}"><b>${name}</b></a>`
+        } else {
+            return `<a href="${href}">${name}</a>`
+        }
+    }).join(" - ");
+
+    document.querySelector("h1").outerHTML = `
+        <header>
+            <h1>MaoTube</h1>
+                <nav>
+                    ${links}
+                </nav>
+        </header>
+    `
+}
+
+displayHeader();

public/index.html

@@ -4,18 +4,19 @@
         <meta charset="utf-8">
         <title>MaoTube</title>
         <link rel="stylesheet" href="style.css">
-        <script src="script.js" defer></script>
     </head>
     <body>
         <h1>MaoTube</h1>
-        <form method="GET" target="/search">
-            <input type="text" name="query" placeholder="...">
+        <form method="GET" target="_self" action="/search">
+            <label for="query"><p>Search</p></label>
+            <input type="text" id="query" name="query" placeholder="...">
             <input type="submit" value="Search">
         </form>
         <br>
         <img src="chairman_1.jpg" alt="The chairman" height="600">
         <img src="chairman_2.jpg" alt="The chairman" height="600">
         <img src="chairman_3.jpg" alt="The chairman" height="600">
+        <script src="/header.js"></script>
     </body>
 </html>
 

public/login/index.html

@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+        <title>MaoTube</title>
+        <link rel="stylesheet" href="/style.css">
+    </head>
+    <body>
+        <h1>MaoTube</h1>
+        <div>
+            <label for="username"><p>Username</p></label>
+            <input type="text" name="username" id="username">
+            <label for="password"><p>Password</p></label>
+            <input type="text" name="password" id="password">
+            <br>
+            <br>
+            <input type="submit" id="submit" value="Login">
+        </div>
+        <br>
+        <div id="result">
+            <noscript>
+                <div class="mao-error">
+                    <p>javascript not enabled</p>
+                    <p>bottom text</p>
+                </div>
+            </noscript>
+            <div id="mao-error" class="mao-error hidden">
+                <p id="mao-error-message"></p>
+                <p>bottom text</p>
+            </div>
+        </div>
+        <script src="script.js"></script>
+        <script src="/header.js"></script>
+    </body>
+</html>
+

public/login/script.js

@@ -0,0 +1,46 @@
+function error(message) {
+    const errorContainer = document.getElementById("mao-error");
+    const errorElement = document.getElementById("mao-error-message");
+
+    errorElement.innerText = message;
+    errorContainer.classList.remove("hidden");
+}
+
+function displayResponse(response) {
+    if (!response.ok) {
+        error(response.error);
+        return;
+    }
+    window.location.href = "/";
+}
+
+function click() {
+    const username = document.getElementById("username").value;
+    const password = document.getElementById("password").value;
+
+    if (username.trim().length === 0) {
+        error("username cannot be empty");
+        return;
+    } else if (password.trim().length === 0) {
+        error("password cannot be empty");
+        return;
+    }
+    const method = "POST";
+    const body = JSON.stringify({ username, password });
+    const headers = new Headers({ "Content-Type": "application/json" });
+    return fetch("/api/login", {
+        method,
+        body,
+        headers,
+    })
+        .then(v => v.json())
+        .then(displayResponse);
+
+}
+
+function main() {
+    const submit = document.getElementById("submit");
+    submit.addEventListener("click", () => click())
+}
+
+main();

public/register/index.html

@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+        <title>MaoTube</title>
+        <link rel="stylesheet" href="/style.css">
+    </head>
+    <body>
+        <h1>MaoTube</h1>
+        <div>
+            <label for="username"><p>Username</p></label>
+            <input type="text" name="username" id="username">
+            <label for="password"><p>Password</p></label>
+            <input type="text" name="password" id="password">
+            <br>
+            <br>
+            <input type="submit" id="submit" value="Register">
+        </div>
+        <br>
+        <div id="result">
+            <noscript>
+                <div class="mao-error">
+                    <p>javascript not enabled</p>
+                    <p>bottom text</p>
+                </div>
+            </noscript>
+            <div id="mao-error" class="mao-error hidden">
+                <p id="mao-error-message"></p>
+                <p>bottom text</p>
+            </div>
+        </div>
+        <script src="script.js"></script>
+        <script src="/header.js"></script>
+    </body>
+</html>
+

public/register/script.js

@@ -0,0 +1,46 @@
+function error(message) {
+    const errorContainer = document.getElementById("mao-error");
+    const errorElement = document.getElementById("mao-error-message");
+
+    errorElement.innerText = message;
+    errorContainer.classList.remove("hidden");
+}
+
+function displayResponse(response) {
+    if (!response.ok) {
+        error(response.error);
+        return;
+    }
+    window.location.href = "/login";
+}
+
+function click() {
+    const username = document.getElementById("username").value;
+    const password = document.getElementById("password").value;
+
+    if (username.trim().length === 0) {
+        error("username cannot be empty");
+        return;
+    } else if (password.trim().length === 0) {
+        error("password cannot be empty");
+        return;
+    }
+    const method = "POST";
+    const body = JSON.stringify({ username, password });
+    const headers = new Headers({ "Content-Type": "application/json" });
+    return fetch("/api/register", {
+        method,
+        body,
+        headers,
+    })
+        .then(v => v.json())
+        .then(displayResponse);
+
+}
+
+function main() {
+    const submit = document.getElementById("submit");
+    submit.addEventListener("click", () => click())
+}
+
+main();

public/script.js

@@ -1,3 +0,0 @@
-
-
-

public/search/index.html

@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+        <title>MaoTube</title>
+        <link rel="stylesheet" href="/style.css">
+    </head>
+    <body>
+        <h1>MaoTube</h1>
+        <form method="GET" target="_self" action="/search">
+            <label for="query"><p>Search</p></label>
+            <input type="text" id="query" name="query" placeholder="...">
+            <input type="submit" value="Search">
+        </form>
+        <br>
+        <br>
+        <div id="result">
+            <noscript>
+                <div class="mao-error">
+                    <p>javascript not enabled</p>
+                    <p>bottom text</p>
+                </div>
+            </noscript>
+            <div id="mao-error" class="mao-error hidden">
+                <p id="mao-error-message"></p>
+                <p>bottom text</p>
+            </div>
+        </div>
+        <script src="script.js"></script>
+        <script src="/header.js"></script>
+    </body>
+</html>
+

public/search/script.js

@@ -0,0 +1,40 @@
+
+function error(message) {
+    const errorContainer = document.getElementById("mao-error");
+    const errorElement = document.getElementById("mao-error-message");
+
+    errorElement.innerText = message;
+    errorContainer.classList.remove("hidden");
+}
+
+function displayResponse(response) {
+    if (!response.ok) {
+        error(response.error);
+        return;
+    }
+    const { videos, total } = response;
+    if (videos.length === 0) {
+        error("search returned no results");
+        return;
+    }
+    const resultElement = document.getElementById("result");
+    resultElement.innerHTML = `<p>Showing ${videos.length}/${total} results.</p>`
+        + "<ul id='video-list'>"
+        + videos
+            .map(v => {
+                return `<li><p><a href="/watch?id=${v.id}">${v.title}</a> - ${v.author}</p></li>`
+            })
+            .join("") 
+        + "</ul>";
+}
+
+function main() {
+    const params = new URLSearchParams(window.location.search);
+    const searchElement = document.getElementById("query");
+    searchElement.value = params.get("query") || "";
+    return fetch(`/api/search?${params.toString()}`)
+        .then(v => v.json())
+        .then(displayResponse);
+}
+
+main();

public/style.css

@@ -11,4 +11,50 @@ body {
     margin: 0 auto;
     padding: 2rem;
     text-align: center;
+    font-family: system-ui, sans-serif;
+}
+
+.mao-error {
+    display: flex;
+    flex-direction: column;
+    background: url("/chairman_1.jpg");
+    background-size: auto 600px;
+    background-repeat: no-repeat;
+    background-position: center center;
+    height: 600px;
+}
+
+.hidden {
+    display: none;
+}
+
+.mao-error p {
+  color: #fff;
+  text-transform: uppercase;
+  font-weight: bold;
+  font-family: "Impact", "Bebas", "League Gothic", "Oswald", "Coluna", "Ubuntu Condensed", system-ui, sans-serif;
+  text-shadow: 
+       3px 3px 0 black,
+      -3px -3px 0 black,
+       3px -3px 0 black,
+      -3px  3px 0 black,
+
+      -3px  0px 0 black,
+       3px  0px 0 black,
+       0px  3px 0 black,
+       0px -3px 0 black;
+  font-size: 2em;
+}
+
+.mao-error p:last-child {
+    margin-top: auto;
+}
+
+ul#video-list {
+    padding: 0;
+    list-style: none;
+}
+
+#video-player {
+    max-height: 80vh;
 }

public/upload/index.html

@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+        <title>MaoTube</title>
+        <link rel="stylesheet" href="/style.css">
+    </head>
+    <body>
+        <h1>MaoTube</h1>
+        <form action="/api/upload_video" method="POST" enctype="multipart/form-data">
+            <label for="username"><p>Title</p></label>
+            <input type="text" name="title">
+            <label for="password"><p>Video</p></label>
+            <input type="file" name="video">
+            <br>
+            <br>
+            <input type="submit" id="submit" value="Upload">
+        </form>
+        <script src="/header.js"></script>
+    </body>
+</html>
+

public/watch/index.html

@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+        <title>MaoTube</title>
+        <link rel="stylesheet" href="/style.css">
+    </head>
+    <body>
+        <h1>MaoTube</h1>
+        <form method="GET" target="_self" action="/search">
+            <label for="query"><p>Search</p></label>
+            <input type="text" id="query" name="query" placeholder="...">
+            <input type="submit" value="Search">
+        </form>
+        <br>
+        <div id="result">
+            <noscript>
+                <div class="mao-error">
+                    <p>javascript not enabled</p>
+                    <p>bottom text</p>
+                </div>
+            </noscript>
+            <div id="mao-error" class="mao-error hidden">
+                <p id="mao-error-message"></p>
+                <p>bottom text</p>
+            </div>
+        </div>
+        <script src="script.js"></script>
+        <script src="/header.js"></script>
+    </body>
+</html>
+

public/watch/script.js

@@ -0,0 +1,31 @@
+
+function error(message) {
+    const errorContainer = document.getElementById("mao-error");
+    const errorElement = document.getElementById("mao-error-message");
+
+    errorElement.innerText = message;
+    errorContainer.classList.remove("hidden");
+}
+
+function main() {
+    const params = new URLSearchParams(window.location.search);
+    const id = params.get("id");
+    if (!id) {
+        error("invalid id parameter");
+        return;
+    }
+
+    const result = document.getElementById("result");
+
+    const video = document.createElement("video");
+    video.controls = true;
+    video.id = "video-player";
+    video.src = `/videos/${id}.mp4`;
+    result.appendChild(video);
+    video.onerror = () => {
+        video.remove();
+        error("invalid id parameter");
+    }
+}
+
+main();