let uploader set a collection name for a multiple-file upload

src/upload.rs

@@ -20,6 +20,10 @@ const MAX_FILES: usize = 256;
 const FILENAME_DATE_FORMAT: &[time::format_description::FormatItem] =
     time::macros::format_description!("[year]-[month]-[day]-[hour][minute][second]");
 
+fn sanitise(name: &str) -> String {
+    sanitise_file_name::sanitise(&name.nfd().collect::<String>())
+}
+
 #[derive(thiserror::Error, Debug)]
 enum Error {
     #[error("Failed to parse file metadata")]
@@ -104,7 +108,7 @@ pub struct UploadedFile {
 impl UploadedFile {
     fn new(name: &str, size: u64, modtime: OffsetDateTime) -> Self {
         Self {
-            name: sanitise_file_name::sanitise(&name.nfd().collect::<String>()),
+            name: sanitise(name),
             size,
             modtime,
         }
@@ -134,6 +138,7 @@ struct UploadManifest {
     files: Vec<RawUploadedFile>,
     lifetime: u16,
     password: String,
+    collection_name: Option<String>,
 }
 
 #[derive(Serialize)]
@@ -229,6 +234,7 @@ impl Uploader {
                     files: raw_files,
                     lifetime,
                     password,
+                    collection_name,
                 } = serde_json::from_slice(text.as_bytes())?;
                 if std::env::var("TRANSBEAM_UPLOAD_PASSWORD") != Ok(password) {
                     return Err(Error::IncorrectPassword);
@@ -277,9 +283,13 @@ impl Uploader {
                     let now = OffsetDateTime::now_utc();
                     let zip_writer = super::zip::ZipGenerator::new(files.clone(), writer);
                     let size = zip_writer.total_size();
-                    let download_filename = super::APP_NAME.to_owned()
-                        + &now.format(FILENAME_DATE_FORMAT).unwrap()
-                        + ".zip";
+                    let download_filename = collection_name
+                        .map(|f| sanitise(&(f + ".zip")))
+                        .unwrap_or_else(|| {
+                            super::APP_NAME.to_owned()
+                                + &now.format(FILENAME_DATE_FORMAT).unwrap()
+                                + ".zip"
+                        });
                     (Box::new(zip_writer), download_filename, size, now)
                 } else {
                     (

static/css/states.css

@@ -4,6 +4,7 @@
  * landing: haven't entered upload password yet
  * uploads_closed: uploading is currently unavailable
  * no_files: no files are selected
+ * one_file: exactly one file is selected
  * selecting: upload hasn't started yet
  * uploading: upload is in progress
  * completed: upload is done
@@ -43,6 +44,8 @@ body.landing #upload_controls { display: none; }
 body.selecting #upload_settings { display: revert; }
 body.no_files #upload_settings { display: none; }
 
+body.one_file #collection_name { display: none; }
+
 body.selecting #download_code_container { display: none; }
 
 #progress_container { display: none; }

static/css/transbeam.css

@@ -273,6 +273,7 @@ button:disabled, input:disabled + .fake_button, input[type="submit"]:disabled {
 
 #lifetime_container {
     margin-top: 10px;
+    margin-bottom: 10px;
 }
 
 input[type="text"], input[type="password"] {

static/js/upload.js

@@ -21,6 +21,7 @@ let fileInput;
 let fileList;
 let uploadButton;
 let lifetimeInput;
+let collectionNameInput;
 let downloadCode;
 
 let progressPercentage;
@@ -43,6 +44,7 @@ document.addEventListener('DOMContentLoaded', () => {
     fileList = document.getElementById('file_list');
     uploadButton = document.getElementById('upload_button');
     lifetimeInput = document.getElementById('lifetime');
+    collectionNameInput = document.getElementById('collection_name');
     downloadCode = document.getElementById('download_code');
     progressPercentage = document.getElementById('progress_percentage');
     progressSize = document.getElementById('progress_size');
@@ -120,6 +122,9 @@ function updateFiles() {
         fileInputMessage.textContent = 'Select files to upload...';
         document.body.className = 'no_files selecting' + extraClasses;
     } else {
+        if (files.length === 1) {
+            extraClasses += " one_file";
+        }
         fileInputMessage.textContent = 'Select more files to upload...';
         uploadButton.textContent = `Upload ${files.length} file${files.length > 1 ? 's' : ''} (${displaySize(totalBytes)})`;
         document.body.className = 'selecting' + extraClasses;
@@ -184,6 +189,7 @@ function beginUpload() {
 
 function sendManifest() {
     const lifetime = parseInt(lifetimeInput.value);
+    const collection_name = collectionNameInput.value || null;
     const fileMetadata = files.map((file) => ({
         name: file.name,
         size: file.size,
@@ -192,6 +198,7 @@ function sendManifest() {
     socket.send(JSON.stringify({
         files: fileMetadata,
         lifetime,
+        collection_name,
         password: uploadPassword,
     }));
 }

templates/index.html

@@ -60,6 +60,9 @@
             </select>
           </label>
         </div>
+        <div>
+          <input type="text" id="collection_name" placeholder="Collection name"/>
+        </div>
       </div>
       <div id="download_code_container">
         <div id="download_code_main">