massive cleanup/refactor of the web UI

just unwrap on datetime formatting, it should never be an issue and there's no point having an error ready to pass back to the client
2022-05-01 02:32:56 -04:00 · 2022-05-01 02:22:03 -04:00
5 changed files with 306 additions and 171 deletions
--- a/src/upload.rs
+++ b/src/upload.rs
@ -22,8 +22,6 @@ enum Error {
    Parse(#[from] serde_json::Error),
    #[error("Error writing to stored file")]
    Storage(#[from] std::io::Error),
-    #[error("Time formatting error")]
-    TimeFormat(#[from] time::error::Format),
    #[error("Duplicate filename could not be deduplicated")]
    DuplicateFilename,
    #[error("This message type was not expected at this stage")]
@ -45,8 +43,7 @@ enum Error {
 impl Error {
    fn close_code(&self) -> CloseCode {
        match self {
-            Self::Storage(_)
-                | Self::TimeFormat(_) => CloseCode::Error,
+            Self::Storage(_) => CloseCode::Error,
            Self::Parse(_)
                | Self::UnexpectedMessageType
                | Self::ClosedEarly(_)
@ -245,7 +242,7 @@ impl Uploader {
                    let zip_writer = super::zip::ZipGenerator::new(files, writer);
                    let size = zip_writer.total_size();
                    let download_filename =
-                        super::APP_NAME.to_owned() + &now.format(FILENAME_DATE_FORMAT)? + ".zip";
+                        super::APP_NAME.to_owned() + &now.format(FILENAME_DATE_FORMAT).unwrap() + ".zip";
                    (
                        Box::new(zip_writer),
                        download_filename,
--- a/static/index.html
+++ b/static/index.html
@ -4,12 +4,14 @@
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1"/>
    <link rel="stylesheet" type="text/css" href="transbeam.css"/>
+    <link rel="stylesheet" type="text/css" href="states.css"/>
    <link rel="apple-touch-icon" href="images/site-icons/transbeam-apple.png"/>
    <link rel="manifest" href="manifest.json"/>
    <script src="util.js"></script>
+    <script src="transbeam.js"></script>
    <title>transbeam</title>
  </head>
-  <body>
+  <body class="no_files selecting">
    <div id="header">
      <img src="images/site-icons/transbeam.svg" height="128">
      <h1>transbeam</h1>
@ -17,8 +19,12 @@

    <noscript>This page requires Javascript :(</noscript>

+    <div id="message"></div>
+    <div id="upload_controls">
+      <div>
        <button id="upload">Upload</button>
-      <div id="lifetime_container" style="display: none;">
+      </div>
+      <div id="lifetime_container">
        <label>
          Keep files for:
          <select id="lifetime">
@ -29,30 +35,26 @@
          </select>
        </label>
      </div>
-      <div id="download_link_container" style="display: none;">
+    </div>
+    <div id="download_link_container">
      <div id="download_link_main">
        <div>Download link: <span id="download_link"></span></div><div class="copy_button"></div>
      </div>
-        <div id="copied_message" style="display: none;">Copied!</div>
+      <div id="copied_message">Copied!</div>
    </div>
-      <div id="progress_container" style="display: none;">
+    <div id="progress_container">
      <div id="progress"></div>
      <div id="progress_bar"></div>
    </div>
-      <div id="file_list_container" style="display: none;">
    <table id="file_list">
    </table>
-      </div>
-      <div id="file_input_container">
-        <label>
+    <label id="file_input_container">
      <input type="file" multiple id="file_input"/>
      <span class="fake_button" id="file_input_message">Select files to upload...</span>
    </label>
-      </div>
    <div id="footer">
      <h5>(c) 2022 xenofem, MIT licensed</h5>
      <h5><a target="_blank" href="https://git.xeno.science/xenofem/transbeam">source</a></h5>
    </div>
-      <script src="transbeam.js"></script>
  </body>
 </html>
--- a/static/states.css
+++ b/static/states.css
@ -0,0 +1,39 @@
+/**
+ * List of classes the body can have:
+ *
+ * no_files: no files are selected
+ * selecting: upload hasn't started yet
+ * uploading: upload is in progress
+ * completed: upload is done
+ * error: an error has occurred
+ */
+
+#message { display: none; }
+body.completed #message {
+    display: revert;
+    color: #060;
+    border-color: #0a0;
+}
+body.error #message {
+    display: revert;
+    color: #d00;
+    border-color: #f24;
+}
+
+#upload_controls { display: none; }
+body.selecting #upload_controls { display: revert; }
+body.no_files #upload_controls { display: none; }
+
+body.selecting #download_link_container { display: none; }
+
+#progress_container { display: none; }
+body.uploading #progress_container { display: revert; }
+
+body.no_files #file_list { display: none; }
+body.completed #file_list { background-color: #7af; }
+
+.delete_button { display: none; }
+body.selecting .delete_button { display: revert; }
+
+#file_input_container { display: none; }
+body.selecting #file_input_container { display: revert; }
--- a/static/transbeam.css
+++ b/static/transbeam.css
@ -10,6 +10,14 @@ body {
    margin-top: 5px;
 }

+#message {
+    border: 1px solid;
+    border-radius: 4px;
+    padding: 10px;
+    width: fit-content;
+    margin: 10px auto;
+}
+
 #progress_container {
    margin: 10px auto;
 }
@ -64,7 +72,15 @@ body {
    bottom: 0;
    margin: auto;
    height: fit-content;
+    display: none;
 }
+#download_link_container.copied #copied_message {
+    display: revert;
+}
+#download_link_container.copied #download_link_main {
+    visibility: hidden;
+}
+

 table {
    border-collapse: collapse;
@ -85,7 +101,7 @@ td {
    padding: 10px;
 }

-td.file_delete {
+.delete_button {
    background-color: #888;
    mask-image: url("images/feather-icons/x.svg");
    mask-size: contain;
@ -96,7 +112,7 @@ td.file_delete {
    cursor: pointer;
 }

-td.file_delete:hover {
+.delete_button:hover {
    background-color: #f00;
 }

@ -127,7 +143,7 @@ button:hover, .fake_button:hover {
 }

 button:disabled, input:disabled + .fake_button {
-    color: #aaa;
+    color: #666;
    background-color: #eee;
    border-color: #ddd;
    cursor: not-allowed;
--- a/static/transbeam.js
+++ b/static/transbeam.js
@ -1,36 +1,135 @@
 const FILE_CHUNK_SIZE = 16384;
 const MAX_FILES = 256;

-const fileInputContainer = document.getElementById('file_input_container');
-const fileInput = document.getElementById('file_input');
-const fileInputMessage = document.getElementById('file_input_message');
-
-const fileListContainer = document.getElementById('file_list_container');
-const fileList = document.getElementById('file_list');
-
-const lifetimeContainer = document.getElementById('lifetime_container');
-const lifetimeInput = document.getElementById('lifetime');
-
-const uploadButton = document.getElementById('upload');
-
-const downloadLinkContainer = document.getElementById('download_link_container');
-const downloadLinkMain = document.getElementById('download_link_main');
-const downloadLink = document.getElementById('download_link');
-const copiedMessage = document.getElementById('copied_message');
-
-const progressContainer = document.getElementById('progress_container');
-const progress = document.getElementById('progress');
-const progressBar = document.getElementById('progress_bar');
-
 let files = [];

-let socket = null;
+let socket;
 let fileIndex = 0;
 let byteIndex = 0;
 let bytesSent = 0;
 let totalBytes = 0;

-function sendManifest(lifetime) {
+let maxSize = null;
+
+let messageBox;
+let fileInput;
+let fileList;
+let uploadButton;
+let lifetimeInput;
+let downloadLink;
+let progress;
+let progressBar;
+
+document.addEventListener('DOMContentLoaded', () => {
+    messageBox = document.getElementById('message');
+    fileInput = document.getElementById('file_input');
+    fileList = document.getElementById('file_list');
+    uploadButton = document.getElementById('upload');
+    lifetimeInput = document.getElementById('lifetime');
+    downloadLink = document.getElementById('download_link');
+    progress = document.getElementById('progress');
+    progressBar = document.getElementById('progress_bar');
+
+    fileInput.addEventListener('input', () => {
+        for (const file of fileInput.files) { addFile(file); }
+        updateFiles();
+        fileInput.value = '';
+    });
+
+    uploadButton.addEventListener('click', beginUpload);
+
+    const downloadLinkContainer = document.getElementById('download_link_container');
+    downloadLinkContainer.addEventListener('click', () => {
+        navigator.clipboard.writeText(downloadLink.textContent);
+        downloadLinkContainer.className = 'copied';
+    });
+    downloadLinkContainer.addEventListener('mouseleave', () => {
+        downloadLinkContainer.className = '';
+    });
+
+    updateFiles();
+});
+
+function updateFiles() {
+    const fileInputMessage = document.getElementById('file_input_message');
+
+    totalBytes = files.reduce((acc, file) => acc + file.size, 0);
+
+    fileInput.disabled = (files.length >= MAX_FILES || (maxSize !== null && totalBytes >= maxSize));
+
+    let extraClasses = '';
+    if (maxSize !== null && totalBytes > maxSize) {
+        uploadButton.disabled = true;
+        displayError(`The maximum size for uploads is ${displaySize(maxSize)}`);
+        extraClasses = ' error';
+    } else {
+        uploadButton.disabled = false;
+    }
+
+    if (files.length === 0) {
+        fileInputMessage.textContent = 'Select files to upload...';
+        document.body.className = 'no_files selecting' + extraClasses;
+    } else {
+        fileInputMessage.textContent = 'Select more files to upload...';
+        uploadButton.textContent = `Upload ${files.length} file${files.length > 1 ? 's' : ''} (${displaySize(totalBytes)})`;
+        document.body.className = 'selecting' + extraClasses;
+    }
+}
+
+function addFile(newFile) {
+    if (files.length >= MAX_FILES) { return; }
+    if (files.some((oldFile) => newFile.name === oldFile.name)) { return; }
+
+    files.push(newFile);
+
+    addListEntry(newFile);
+}
+
+function addListEntry(file) {
+    const listEntry = document.createElement('tr');
+
+    const deleteButtonCell = document.createElement('td');
+    deleteButtonCell.className = 'delete_button';
+    deleteButtonCell.addEventListener('click', () => {
+        removeFile(file.name);
+        listEntry.remove();
+        updateFiles();
+    });
+
+    const sizeCell = document.createElement('td');
+    sizeCell.className = 'file_size';
+    sizeCell.textContent = displaySize(file.size);
+
+    const nameCell = document.createElement('td');
+    nameCell.className = 'file_name';
+    nameCell.textContent = file.name;
+
+    listEntry.appendChild(deleteButtonCell);
+    listEntry.appendChild(sizeCell);
+    listEntry.appendChild(nameCell);
+
+    fileList.appendChild(listEntry);
+}
+
+function removeFile(name) {
+    files = files.filter((file) => file.name !== name);
+}
+
+function beginUpload() {
+    if (files.length === 0 || files.length > MAX_FILES) { return; }
+
+    fileIndex = 0;
+    byteIndex = 0;
+    bytesSent = 0;
+
+    socket = new WebSocket(`${window.location.protocol === 'http:' ? 'ws' : 'wss'}://${window.location.host}/upload`);
+    socket.addEventListener('open', sendManifest);
+    socket.addEventListener('message', handleMessage);
+    socket.addEventListener('close', handleClose);
+}
+
+function sendManifest() {
+    const lifetime = parseInt(lifetimeInput.value);
    const fileMetadata = files.map((file) => ({
        name: file.name,
        size: file.size,
@ -39,14 +138,55 @@ function sendManifest(lifetime) {
    socket.send(JSON.stringify({ lifetime, files: fileMetadata }));
 }

-function finishSending() {
-    if (socket.bufferedAmount > 0) {
-        window.setTimeout(finishSending, 1000);
+function handleMessage(msg) {
+    if (bytesSent === 0) {
+        let reply;
+        try {
+            reply = JSON.parse(msg.data);
+        } catch (error) {
+            socket.close();
+            displayError('Received an invalid response from the server');
+            console.error(error);
            return;
        }
+        if (reply.type === 'ready') {
+            downloadLink.textContent = `${window.location.origin}/download/${reply.code}`;
+            updateProgress();
+            document.body.className = 'uploading';
+            sendData();
+            return;
+        }
+
+        // we're going to display a more useful error message
+        socket.removeEventListener('close', handleClose);
        socket.close();
-    progressContainer.textContent = "Upload complete!";
-    fileList.style.backgroundColor = "#7af";
+        if (reply.type === 'too_big') {
+            maxSize = reply.max_size;
+            updateFiles();
+        } else if (reply.type === 'too_long') {
+            let options = Array.from(lifetimeInput.options);
+            options.reverse();
+            for (const option of options) {
+                if (option.value > reply.max_days) {
+                    option.disabled = true;
+                } else {
+                    option.selected = true;
+                    break;
+                }
+            }
+            displayError(`The maximum retention time for uploads is ${reply.max_days} days`);
+        } else if (reply.type === 'error') {
+            displayError(reply.details);
+        }
+    } else {
+        if (msg.data === 'ack') {
+            sendData();
+        } else {
+            console.error('Received unexpected message from server instead of ack', msg.data);
+            displayError();
+            socket.close();
+        }
+    }
 }

 function sendData() {
@ -91,108 +231,49 @@ function updateProgress() {
    }
 }

-function updateFiles() {
-    totalBytes = files.reduce((acc, file) => acc + file.size, 0);
-
-    if (files.length === 0) {
-        fileInputMessage.textContent = 'Select files to upload...';
-        fileListContainer.style.display = 'none';
-        uploadButton.style.display = 'none';
-        lifetimeContainer.style.display = 'none';
+function handleClose(e) {
+    console.log('Websocket closed', e);
+    if (fileIndex >= files.length) {
+        displayCompletion();
    } else {
-        fileInputMessage.textContent = 'Select more files to upload...';
-        fileListContainer.style.display = '';
-        uploadButton.textContent = `Upload ${files.length} file${files.length > 1 ? 's' : ''} (${displaySize(totalBytes)})`;
-        uploadButton.style.display = '';
-        lifetimeContainer.style.display = '';
+        let error;
+        if (e.code === 1011) {
+            if (e.reason) {
+                error = `Server error: ${e.reason}`;
+            } else {
+                error = "A server error has occurred."
+            }
+        } else if (e.reason) {
+            error = e.reason;
+        }
+        displayError(error);
    }
-    fileInput.disabled = (files.length >= MAX_FILES);
 }

-updateFiles();
-downloadLinkContainer.style.display = 'none';
-progressContainer.style.display = 'none';
-
-function addFile(newFile) {
-    if (files.length >= MAX_FILES) { return; }
-    if (files.some((oldFile) => newFile.name === oldFile.name)) { return; }
-
-    files.push(newFile);
-
-    addListEntry(newFile);
+function finishSending() {
+    if (socket.bufferedAmount > 0) {
+        window.setTimeout(finishSending, 1000);
+        return;
+    }
+    socket.close();
+    displayCompletion();
 }

-function addListEntry(file) {
-    const listEntry = document.createElement('tr');
-
-    const deleteButtonCell = document.createElement('td');
-    deleteButtonCell.className = 'file_delete';
-    deleteButtonCell.addEventListener('click', () => {
-        removeFile(file.name);
-        listEntry.remove();
-        updateFiles();
-    });
-
-    const sizeCell = document.createElement('td');
-    sizeCell.className = 'file_size';
-    sizeCell.textContent = displaySize(file.size);
-
-    const nameCell = document.createElement('td');
-    nameCell.className = 'file_name';
-    nameCell.textContent = file.name;
-
-    listEntry.appendChild(deleteButtonCell);
-    listEntry.appendChild(sizeCell);
-    listEntry.appendChild(nameCell);
-
-    fileList.appendChild(listEntry);
+function displayCompletion() {
+    messageBox.textContent = 'Upload complete!';
+    document.body.className = 'completed';
+    removePerFileProgressBars(); // completed file backgrounds are handled in CSS
 }

-function removeFile(name) {
-    files = files.filter((file) => file.name !== name);
+function displayError(error) {
+    messageBox.textContent = error || 'An error has occurred.';
+    document.body.className = 'selecting error';
+    removePerFileProgressBars();
 }

-fileInput.addEventListener('input', (e) => {
-    for (const file of e.target.files) { addFile(file); }
-    updateFiles();
-    e.target.value = '';
-});
-
-uploadButton.addEventListener('click', (e) => {
-    if (files.length === 0) { return; }
-
-    const lifetime = parseInt(lifetimeInput.value);
-    lifetimeContainer.remove();
-    fileInputContainer.remove();
-    for (const button of Array.from(document.getElementsByTagName('button')).concat(...document.getElementsByClassName('file_delete'))) {
-        button.remove();
+function removePerFileProgressBars() {
+    const fileEntries = Array.from(fileList.children);
+    for (entry of fileEntries) {
+        entry.style.backgroundSize = "0%";
    }
-
-    socket = new WebSocket(`${window.location.protocol === 'http:' ? 'ws' : 'wss'}://${window.location.host}/upload`);
-    socket.addEventListener('open', () => sendManifest(lifetime));
-    socket.addEventListener('message', (msg) => {
-        if (bytesSent === 0) {
-            const reply = JSON.parse(msg.data);
-            if (reply.type === 'ready' && reply.code.match(/^[A-Za-z0-9]+$/)) {
-                downloadLink.textContent = `${window.location.origin}/download/${reply.code}`;
-                downloadLinkContainer.style.display = '';
-                updateProgress();
-                progressContainer.style.display = '';
-                sendData();
 }
-        } else if (msg.data === 'ack') {
-            sendData();
-        }
-    });
-})
-
-downloadLinkContainer.addEventListener('click', (e) => {
-    navigator.clipboard.writeText(downloadLink.textContent);
-    downloadLinkMain.style.visibility = 'hidden';
-    copiedMessage.style.display = '';
-})
-
-downloadLinkContainer.addEventListener('mouseleave', (e) => {
-    copiedMessage.style.display = 'none';
-    downloadLinkMain.style.visibility = 'visible';
-});
Author	SHA1	Message	Date
xenofem	511bd741dd	massive cleanup/refactor of the web UI	2022-05-01 02:32:56 -04:00
xenofem	99b93b4e7d	just unwrap on datetime formatting, it should never be an issue and there's no point having an error ready to pass back to the client	2022-05-01 02:22:03 -04:00