Improved breadcrumb scaling

- Resolve threading deadlock when multiple watch request arrived at the same moment.
- Implement more graceful server exit.
- Reduce excessive logging.
- Fix unix socket clearing; until Sanic starts accepting Path for unix socket name.

README.md

@@ -1,116 +1,118 @@
-# Cista Web Storage
-
-<img src="https://git.zi.fi/Vasanko/cista-storage/raw/branch/main/docs/cista.jpg" align=right width=250>
-
-Cista takes its name from the ancient cistae, metal containers used by Greeks and Egyptians to safeguard valuable items. This modern application provides a browser interface for secure and accessible file storage, echoing the trust and reliability of its historical namesake.
-
-This is a cutting-edge **file and document server** designed for speed, efficiency, and unparalleled ease of use. Experience **lightning-fast browsing**, thanks to the file list maintained directly in your browser and updated from server filesystem events, coupled with our highly optimized code. Fully **keyboard-navigable** and with a responsive layout, Cista flawlessly adapts to your devices, providing a seamless experience wherever you are. Our powerful **instant search** means you're always just a few keystrokes away from finding exactly what you need. Press **1/2/3** to switch ordering, navigate with all four arrow keys (+Shift to select). Or click your way around on **breadcrumbs that remember where you were**.
-
-The Cista project started as an inevitable remake of [Droppy](https://github.com/droppyjs/droppy) which we used and loved despite its numerous bugs. Cista Storage stands out in handling even the most exotic filenames, ensuring a smooth experience where others falter.
-
-All of this is wrapped in an intuitive interface with automatic light and dark themes, making Cista Storage the ideal choice for anyone seeking a reliable, versatile, and quick file storage solution. Quickly setup your own Cista where your files are just a click away, safe, and always accessible.
-
-Experience Cista by visiting [Cista Demo](https://drop.zi.fi) for a test run and perhaps upload something...
-
-
-## Getting Started
-### Installation
-
-To install the cista application, use:
-
-```fish
-pip install cista
-```
-
-Note: Some Linux distributions might need `--break-system-packages` to install Python packages, which are safely installed in the user's home folder. As an alternative to avoid installation, run it with command `pipx run cista`
-
-### Running the Server
-
-Create an account: (or run a public server without authentication)
-```fish
-cista --user yourname --privileged
-```
-
-Serve your files at http://localhost:8000:
-```fish
-cista -l :8000 /path/to/files
-```
-
-The server remembers its settings in the config folder (default `~/.local/share/cista/`), including the listen port and directory, for future runs without arguments.
-
-### Internet Access
-
-To use your own TLS certificates, place them in the config folder and run:
-
-```fish
-cista -l cista.example.com
-```
-
-Most admins instead find the [Caddy](https://caddyserver.com/) web server convenient for its auto TLS certificates and all. A proxy also allows running multiple web services or Cista instances on the same IP address. Caddy configuration **/etc/caddy/Caddyfile** is dead simple:
-
-```Caddyfile
-cista.example.com {
-    reverse_proxy :8000
-}
-```
-
-## Development setup
-
-For rapid development, we use the Vite development server for the Vue frontend, while running the backend on port 8000 that Vite proxies backend requests to. Each server live reloads whenever its code or configuration are modified.
-
-```fish
-cd frontend
-npm install
-npm run dev
-```
-
-Concurrently, start the backend on another terminal:
-
-```fish
-hatch shell
-pip install -e '.[dev]'
-cista --dev -l :8000 /path/to/files
-```
-
-We use `hatch shell` for installing on a virtual environment, to not disturb the rest of the system with our hacking.
-
-Vue is used to build files in `cista/wwwroot`, included prebuilt in the Python package. Running `hatch build` builds the frontend and creates a NodeJS-independent Python package.
-
-## System Deployment
-
-This setup allows easy addition of storages, each with its own domain, configuration, and files.
-
-Assuming a restricted user account **storage** for serving files and that cista is installed system-wide or on this account (check with `sudo -u storage -s`). Alternatively, use `pipx run cista` or `hatch run cista` as the ExecStart command.
-
-Create **/etc/systemd/system/cista@.service**:
-
-```ini
-[Unit]
-Description=Cista storage %i
-
-[Service]
-User=storage
-ExecStart=cista -c /srv/cista/%i -l /srv/cista/%i/socket /media/storage/@%i/
-Restart=always
-
-[Install]
-WantedBy=multi-user.target
-```
-
-This setup supports multiple storages, each under `/media/storage/<domain>` for files and `/srv/cista/<domain>/` for configuration. UNIX sockets are used instead of numeric ports for convenience.
-
-```fish
-systemctl daemon-reload
-systemctl enable --now cista@foo.example.com
-systemctl enable --now cista@bar.example.com
-```
-
-Public exposure is easiest using the Caddy web server, but Nginx or others also work. Run the server with -l domain.example.com if you have TLS certificates in the config folder.
-
-**/etc/caddy/Caddyfile**:
-
-```Caddyfile
-foo.example.com, bar.example.com {
-    reverse_proxy unix//srv/cista/{host}/socket
-}
-```
+# Cista Web Storage
+
+<img src="https://git.zi.fi/Vasanko/cista-storage/raw/branch/main/docs/cista.webp" align=left width=250>
+
+Cista takes its name from the ancient *cistae*, metal containers used by Greeks and Egyptians to safeguard valuable items. This modern application provides a browser interface for secure and accessible file storage, echoing the trust and reliability of its historical namesake.
+
+This is a cutting-edge **file and document server** designed for speed, efficiency, and unparalleled ease of use. Experience **lightning-fast browsing**, thanks to the file list maintained directly in your browser and updated from server filesystem events, coupled with our highly optimized code. Fully **keyboard-navigable** and with a responsive layout, Cista flawlessly adapts to your devices, providing a seamless experience wherever you are. Our powerful **instant search** means you're always just a few keystrokes away from finding exactly what you need. Press **1/2/3** to switch ordering, navigate with all four arrow keys (+Shift to select). Or click your way around on **breadcrumbs that remember where you were**.
+
+The Cista project started as an inevitable remake of [Droppy](https://github.com/droppyjs/droppy) which we used and loved despite its numerous bugs. Cista Storage stands out in handling even the most exotic filenames, ensuring a smooth experience where others falter.
+
+All of this is wrapped in an intuitive interface with automatic light and dark themes, making Cista Storage the ideal choice for anyone seeking a reliable, versatile, and quick file storage solution. Quickly setup your own Cista where your files are just a click away, safe, and always accessible.
+
+Experience Cista by visiting [Cista Demo](https://drop.zi.fi) for a test run and perhaps upload something...
+
+
+## Getting Started
+### Installation
+
+To install the cista application, use:
+
+```fish
+pip install cista
+```
+
+Note: Some Linux distributions might need `--break-system-packages` to install Python packages, which are safely installed in the user's home folder. As an alternative to avoid installation, run it with command `pipx run cista`
+
+### Running the Server
+
+Create an account: (or run a public server without authentication)
+```fish
+cista --user yourname --privileged
+```
+
+Serve your files at http://localhost:8000:
+```fish
+cista -l :8000 /path/to/files
+```
+
+The server remembers its settings in the config folder (default `~/.local/share/cista/`), including the listen port and directory, for future runs without arguments.
+
+### Internet Access
+
+To use your own TLS certificates, place them in the config folder and run:
+
+```fish
+cista -l cista.example.com
+```
+
+Most admins instead find the [Caddy](https://caddyserver.com/) web server convenient for its auto TLS certificates and all. A proxy also allows running multiple web services or Cista instances on the same IP address but different (sub)domains.
+
+`/etc/caddy/Caddyfile`:
+
+```Caddyfile
+cista.example.com {
+    reverse_proxy :8000
+}
+```
+
+## Development setup
+
+For rapid development, we use the Vite development server for the Vue frontend, while running the backend on port 8000 that Vite proxies backend requests to. Each server live reloads whenever its code or configuration are modified.
+
+```fish
+cd frontend
+npm install
+npm run dev
+```
+
+Concurrently, start the backend on another terminal:
+
+```fish
+hatch shell
+pip install -e '.[dev]'
+cista --dev -l :8000 /path/to/files
+```
+
+We use `hatch shell` for installing on a virtual environment, to avoid disturbing the rest of the system with our hacking.
+
+Vue is used to build files in `cista/wwwroot`, included prebuilt in the Python package. Running `hatch build` builds the frontend and creates a NodeJS-independent Python package.
+
+## System Deployment
+
+This setup allows easy addition of storages, each with its own domain, configuration, and files.
+
+Assuming a restricted user account `storage` for serving files and that cista is installed system-wide or on this account (check with `sudo -u storage -s`). Alternatively, use `pipx run cista` or `hatch run cista` as the ExecStart command.
+
+Create `/etc/systemd/system/cista@.service`:
+
+```ini
+[Unit]
+Description=Cista storage %i
+
+[Service]
+User=storage
+ExecStart=cista -c /srv/cista/%i -l /srv/cista/%i/socket /media/storage/%i
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
+```
+
+This setup supports multiple storages, each under `/media/storage/<domain>` for files and `/srv/cista/<domain>/` for configuration. UNIX sockets are used instead of numeric ports for convenience.
+
+```fish
+systemctl daemon-reload
+systemctl enable --now cista@foo.example.com
+systemctl enable --now cista@bar.example.com
+```
+
+Public exposure is easiest using the Caddy web server.
+
+`/etc/caddy/Caddyfile`:
+
+```Caddyfile
+foo.example.com, bar.example.com {
+    reverse_proxy unix//srv/cista/{host}/socket
+}
+```

cista/api.py

@@ -111,13 +111,24 @@ async def watch(req, ws):
     )
     uuid = token_bytes(16)
     try:
-        with watching.state.lock:
-            q = watching.pubsub[uuid] = asyncio.Queue()
-            # Init with disk usage and full tree
-            await ws.send(watching.format_space(watching.state.space))
-            await ws.send(watching.format_root(watching.state.root))
+        q, space, root = await asyncio.get_event_loop().run_in_executor(
+            req.app.ctx.threadexec, subscribe, uuid, ws
+        )
+        await ws.send(space)
+        await ws.send(root)
         # Send updates
         while True:
             await ws.send(await q.get())
     finally:
         del watching.pubsub[uuid]
+
+
+def subscribe(uuid, ws):
+    with watching.state.lock:
+        q = watching.pubsub[uuid] = asyncio.Queue()
+        # Init with disk usage and full tree
+        return (
+            q,
+            watching.format_space(watching.state.space),
+            watching.format_root(watching.state.root),
+        )

cista/app.py

@@ -1,6 +1,7 @@
 import asyncio
 import datetime
 import mimetypes
+import threading
 from concurrent.futures import ThreadPoolExecutor
 from pathlib import Path, PurePath, PurePosixPath
 from stat import S_IFDIR, S_IFREG
@@ -12,7 +13,7 @@ import sanic.helpers
 from blake3 import blake3
 from sanic import Blueprint, Sanic, empty, raw
 from sanic.exceptions import Forbidden, NotFound
-from sanic.log import logging
+from sanic.log import logger
 from stream_zip import ZIP_AUTO, stream_zip
 
 from cista import auth, config, session, watching
@@ -31,14 +32,15 @@ app.exception(Exception)(handle_sanic_exception)
 @app.before_server_start
 async def main_start(app, loop):
     config.load_config()
-    await watching.start(app, loop)
     app.ctx.threadexec = ThreadPoolExecutor(
         max_workers=8, thread_name_prefix="cista-ioworker"
     )
+    await watching.start(app, loop)
 
 
 @app.after_server_stop
 async def main_stop(app, loop):
+    quit.set()
     await watching.stop(app, loop)
     app.ctx.threadexec.shutdown()
 
@@ -122,7 +124,7 @@ def _load_wwwroot(www):
     if not wwwnew:
         msg = f"Web frontend missing from {base}\n  Did you forget: hatch build\n"
         if not www:
-            logging.warning(msg)
+            logger.warning(msg)
         if not app.debug:
             msg = "Web frontend missing. Cista installation is broken.\n"
         wwwnew[""] = (
@@ -141,7 +143,7 @@ def _load_wwwroot(www):
 async def start(app):
     await load_wwwroot(app)
     if app.debug:
-        app.add_task(refresh_wwwroot())
+        app.add_task(refresh_wwwroot(), name="refresh_wwwroot")
 
 
 async def load_wwwroot(app):
@@ -151,27 +153,31 @@ async def load_wwwroot(app):
     )
 
 
+quit = threading.Event()
+
+
 async def refresh_wwwroot():
-    while True:
-        await asyncio.sleep(0.5)
-        try:
-            wwwold = www
-            await load_wwwroot(app)
-            changes = ""
-            for name in sorted(www):
-                attr = www[name]
-                if wwwold.get(name) == attr:
-                    continue
-                headers = attr[2]
-                changes += f"{headers['last-modified']} {headers['etag']} /{name}\n"
-            for name in sorted(set(wwwold) - set(www)):
-                changes += f"Deleted /{name}\n"
-            if changes:
-                print(f"Updated wwwroot:\n{changes}", end="", flush=True)
-        except Exception as e:
-            print("Error loading wwwroot", e)
-        if not app.debug:
-            return
+    try:
+        while not quit.is_set():
+            try:
+                wwwold = www
+                await load_wwwroot(app)
+                changes = ""
+                for name in sorted(www):
+                    attr = www[name]
+                    if wwwold.get(name) == attr:
+                        continue
+                    headers = attr[2]
+                    changes += f"{headers['last-modified']} {headers['etag']} /{name}\n"
+                for name in sorted(set(wwwold) - set(www)):
+                    changes += f"Deleted /{name}\n"
+                if changes:
+                    print(f"Updated wwwroot:\n{changes}", end="", flush=True)
+            except Exception as e:
+                print(f"Error loading wwwroot: {e!r}")
+            await asyncio.sleep(0.5)
+    except asyncio.CancelledError:
+        pass
 
 
 @app.route("/<path:path>", methods=["GET", "HEAD"])
@@ -251,7 +257,7 @@ async def zip_download(req, keys, zipfile, ext):
             for chunk in stream_zip(local_files(files)):
                 asyncio.run_coroutine_threadsafe(queue.put(chunk), loop).result()
         except Exception:
-            logging.exception("Error streaming ZIP")
+            logger.exception("Error streaming ZIP")
             raise
         finally:
             asyncio.run_coroutine_threadsafe(queue.put(None), loop)

cista/auth.py

@@ -71,7 +71,7 @@ def verify(request, *, privileged=False):
             raise Forbidden("Access Forbidden: Only for privileged users", quiet=True)
     elif config.config.public or request.ctx.user:
         return
-    raise Unauthorized("Login required", "cookie", quiet=True)
+    raise Unauthorized(f"Login required for {request.path}", "cookie", quiet=True)
 
 
 bp = Blueprint("auth")

cista/serve.py

@@ -51,7 +51,7 @@ def parse_listen(listen):
             raise ValueError(
                 f"Directory for unix socket does not exist: {unix.parent}/",
             )
-        return "http://localhost", {"unix": unix}
+        return "http://localhost", {"unix": unix.as_posix()}
     if re.fullmatch(r"(\w+(-\w+)*\.)+\w{2,}", listen, re.UNICODE):
         return f"https://{listen}", {"host": listen, "port": 443, "ssl": True}
     try:

cista/util/apphelpers.py

@@ -21,7 +21,6 @@ def jres(data, **kwargs):
 
 
 async def handle_sanic_exception(request, e):
-    logger.exception(e)
     context, code = {}, 500
     message = str(e)
     if isinstance(e, SanicException):
@@ -42,7 +41,7 @@ async def handle_sanic_exception(request, e):
         res.cookies.add_cookie("message", message, max_age=5)
         return res
     # Otherwise use Sanic's default error page
-    return errorpages.HTMLRenderer(request, e, debug=request.app.debug).full()
+    return errorpages.HTMLRenderer(request, e, debug=request.app.debug).render()
 
 
 def websocket_wrapper(handler):
@@ -54,13 +53,14 @@ def websocket_wrapper(handler):
             auth.verify(request)
             await handler(request, ws, *args, **kwargs)
         except Exception as e:
-            logger.exception(e)
             context, code, message = {}, 500, str(e) or "Internal Server Error"
             if isinstance(e, SanicException):
                 context = e.context or {}
                 code = e.status_code
             message = f"⚠️ {message}" if code < 500 else f"🛑 {message}"
             await asend(ws, ErrorMsg({"code": code, "message": message, **context}))
+            if not getattr(e, "quiet", False):
+                logger.exception(f"{code} {e!r}")
             raise
 
     return wrapper

cista/watching.py

@@ -1,15 +1,16 @@
 import asyncio
 import shutil
-import stat
 import sys
 import threading
 import time
+from contextlib import suppress
 from os import stat_result
 from pathlib import Path, PurePosixPath
+from stat import S_ISDIR, S_ISREG
 
 import msgspec
 from natsort import humansorted, natsort_keygen, ns
-from sanic.log import logging
+from sanic.log import logger
 
 from cista import config
 from cista.fileio import fuid
@@ -113,136 +114,70 @@ class State:
 
 state = State()
 rootpath: Path = None  # type: ignore
-quit = False
-modified_flags = (
-    "IN_CREATE",
-    "IN_DELETE",
-    "IN_DELETE_SELF",
-    "IN_MODIFY",
-    "IN_MOVE_SELF",
-    "IN_MOVED_FROM",
-    "IN_MOVED_TO",
-)
+quit = threading.Event()
+
+## Filesystem scanning
 
 
-def watcher_thread(loop):
-    global rootpath
-    import inotify.adapters
-
-    while not quit:
-        rootpath = config.config.path
-        i = inotify.adapters.InotifyTree(rootpath.as_posix())
-        # Initialize the tree from filesystem
-        new = walk()
-        with state.lock:
-            old = state.root
-            if old != new:
-                state.root = new
-                broadcast(format_update(old, new), loop)
-
-        # The watching is not entirely reliable, so do a full refresh every 30 seconds
-        refreshdl = time.monotonic() + 30.0
-
-        for event in i.event_gen():
-            if quit:
-                return
-            # Disk usage update
-            du = shutil.disk_usage(rootpath)
-            space = Space(*du, storage=state.root[0].size)
-            if space != state.space:
-                state.space = space
-                broadcast(format_space(space), loop)
-                break
-            # Do a full refresh?
-            if time.monotonic() > refreshdl:
-                break
-            if event is None:
-                continue
-            _, flags, path, filename = event
-            if not any(f in modified_flags for f in flags):
-                continue
-            # Update modified path
-            path = PurePosixPath(path) / filename
-            try:
-                update(path.relative_to(rootpath), loop)
-            except Exception as e:
-                print("Watching error", e, path, rootpath)
-                raise
-        i = None  # Free the inotify object
-
-
-def watcher_thread_poll(loop):
-    global rootpath
-
-    while not quit:
-        rootpath = config.config.path
-        new = walk()
-        with state.lock:
-            old = state.root
-            if old != new:
-                state.root = new
-                broadcast(format_update(old, new), loop)
-
-        # Disk usage update
-        du = shutil.disk_usage(rootpath)
-        space = Space(*du, storage=state.root[0].size)
-        if space != state.space:
-            state.space = space
-            broadcast(format_space(space), loop)
-
-        time.sleep(2.0)
-
-
-def walk(rel=PurePosixPath()) -> list[FileEntry]:  # noqa: B008
-    path = rootpath / rel
-    try:
-        st = path.stat()
-    except OSError:
-        return []
-    return _walk(rel, int(not stat.S_ISDIR(st.st_mode)), st)
-
-
-def _walk(rel: PurePosixPath, isfile: int, st: stat_result) -> list[FileEntry]:
-    entry = FileEntry(
-        level=len(rel.parts),
-        name=rel.name,
-        key=fuid(st),
-        mtime=int(st.st_mtime),
-        size=st.st_size if isfile else 0,
-        isfile=isfile,
-    )
-    if isfile:
-        return [entry]
-    ret = [entry]
+def walk(rel: PurePosixPath, stat: stat_result | None = None) -> list[FileEntry]:
     path = rootpath / rel
+    ret = []
     try:
+        st = stat or path.stat()
+        isfile = not S_ISDIR(st.st_mode)
+        entry = FileEntry(
+            level=len(rel.parts),
+            name=rel.name,
+            key=fuid(st),
+            mtime=int(st.st_mtime),
+            size=st.st_size if isfile else 0,
+            isfile=isfile,
+        )
+        if isfile:
+            return [entry]
+        # Walk all entries of the directory
+        ret = [entry]
         li = []
         for f in path.iterdir():
-            if quit:
+            if quit.is_set():
                 raise SystemExit("quit")
             if f.name.startswith("."):
                 continue  # No dotfiles
-            s = f.stat()
-            li.append((int(not stat.S_ISDIR(s.st_mode)), f.name, s))
-        for [isfile, name, s] in humansorted(li):
-            if quit:
-                raise SystemExit("quit")
-            subtree = _walk(rel / name, isfile, s)
-            child = subtree[0]
+            with suppress(FileNotFoundError):
+                s = f.lstat()
+                isfile = S_ISREG(s.st_mode)
+                isdir = S_ISDIR(s.st_mode)
+                if not isfile and not isdir:
+                    continue
+                li.append((int(isfile), f.name, s))
+        # Build the tree as a list of FileEntries
+        for [_, name, s] in humansorted(li):
+            sub = walk(rel / name, stat=s)
+            ret.extend(sub)
+            child = sub[0]
             entry.mtime = max(entry.mtime, child.mtime)
             entry.size += child.size
-            ret.extend(subtree)
     except FileNotFoundError:
         pass  # Things may be rapidly in motion
     except OSError as e:
-        print("OS error walking path", path, e)
+        if e.errno == 13:  # Permission denied
+            pass
+        logger.error(f"Watching {path=}: {e!r}")
     return ret
 
 
-def update(relpath: PurePosixPath, loop):
-    """Called by inotify updates, check the filesystem and broadcast any changes."""
-    if rootpath is None or relpath is None:
-        print("ERROR", rootpath, relpath)
+def update_root(loop):
+    """Full filesystem scan"""
+    new = walk(PurePosixPath())
+    with state.lock:
+        old = state.root
+        if old != new:
+            state.root = new
+            broadcast(format_update(old, new), loop)
+
+
+def update_path(relpath: PurePosixPath, loop):
+    """Called on FS updates, check the filesystem and broadcast any changes."""
     new = walk(relpath)
     with state.lock:
         old = state[relpath]
@@ -256,6 +191,22 @@ def update(relpath: PurePosixPath, loop):
         broadcast(format_update(old, state.root), loop)
 
 
+def update_space(loop):
+    """Called periodically to update the disk usage."""
+    du = shutil.disk_usage(rootpath)
+    space = Space(*du, storage=state.root[0].size)
+    # Update only on difference above 1 MB
+    tol = 10**6
+    old = msgspec.structs.astuple(state.space)
+    new = msgspec.structs.astuple(space)
+    if any(abs(o - n) > tol for o, n in zip(old, new, strict=True)):
+        state.space = space
+        broadcast(format_space(space), loop)
+
+
+## Messaging
+
+
 def format_update(old, new):
     # Make keep/del/insert diff until one of the lists ends
     oidx, nidx = 0, 0
@@ -316,20 +267,77 @@ async def abroadcast(msg):
             queue.put_nowait(msg)
     except Exception:
         # Log because asyncio would silently eat the error
-        logging.exception("Broadcast error")
+        logger.exception("Broadcast error")
+
+
+## Watcher thread
+
+
+def watcher_inotify(loop):
+    """Inotify watcher thread (Linux only)"""
+    import inotify.adapters
+
+    modified_flags = (
+        "IN_CREATE",
+        "IN_DELETE",
+        "IN_DELETE_SELF",
+        "IN_MODIFY",
+        "IN_MOVE_SELF",
+        "IN_MOVED_FROM",
+        "IN_MOVED_TO",
+    )
+    while not quit.is_set():
+        i = inotify.adapters.InotifyTree(rootpath.as_posix())
+        # Initialize the tree from filesystem
+        update_root(loop)
+        trefresh = time.monotonic() + 30.0
+        tspace = time.monotonic() + 5.0
+        # Watch for changes (frequent wakeups needed for quiting)
+        for event in i.event_gen(timeout_s=0.1):
+            if quit.is_set():
+                break
+            t = time.monotonic()
+            # The watching is not entirely reliable, so do a full refresh every 30 seconds
+            if t >= trefresh:
+                break
+            # Disk usage update
+            if t >= tspace:
+                tspace = time.monotonic() + 5.0
+                update_space(loop)
+            # Inotify event, update the tree
+            if event and any(f in modified_flags for f in event[1]):
+                # Update modified path
+                update_path(PurePosixPath(event[2]) / event[3], loop)
+
+        del i  # Free the inotify object
+
+
+def watcher_poll(loop):
+    """Polling version of the watcher thread."""
+    while not quit.is_set():
+        t0 = time.perf_counter()
+        update_root(loop)
+        update_space(loop)
+        dur = time.perf_counter() - t0
+        if dur > 1.0:
+            logger.debug(f"Reading the full file list took {dur:.1f}s")
+        quit.wait(0.1 + 8 * dur)
 
 
 async def start(app, loop):
+    global rootpath
     config.load_config()
+    rootpath = config.config.path
     use_inotify = sys.platform == "linux"
     app.ctx.watcher = threading.Thread(
-        target=watcher_thread if use_inotify else watcher_thread_poll,
+        target=watcher_inotify if use_inotify else watcher_poll,
         args=[loop],
+        # Descriptive name for system monitoring
+        name=f"cista-watcher {rootpath}",
     )
     app.ctx.watcher.start()
 
 
 async def stop(app, loop):
-    global quit
-    quit = True
+    quit.set()
     app.ctx.watcher.join()

frontend/README.md

@@ -1,40 +1,46 @@
-# cista-front
-
-This template should help get you started developing with Vue 3 in Vite.
-
-## Recommended IDE Setup
-
-[VSCode](https://code.visualstudio.com/) + [Volar](https://marketplace.visualstudio.com/items?itemName=Vue.volar) (and disable Vetur) + [TypeScript Vue Plugin (Volar)](https://marketplace.visualstudio.com/items?itemName=Vue.vscode-typescript-vue-plugin).
-
-## Type Support for `.vue` Imports in TS
-
-TypeScript cannot handle type information for `.vue` imports by default, so we replace the `tsc` CLI with `vue-tsc` for type checking. In editors, we need [TypeScript Vue Plugin (Volar)](https://marketplace.visualstudio.com/items?itemName=Vue.vscode-typescript-vue-plugin) to make the TypeScript language service aware of `.vue` types.
-
-If the standalone TypeScript plugin doesn't feel fast enough to you, Volar has also implemented a [Take Over Mode](https://github.com/johnsoncodehk/volar/discussions/471#discussioncomment-1361669) that is more performant. You can enable it by the following steps:
-
-1. Disable the built-in TypeScript Extension
-    1) Run `Extensions: Show Built-in Extensions` from VSCode's command palette
-    2) Find `TypeScript and JavaScript Language Features`, right click and select `Disable (Workspace)`
-2. Reload the VSCode window by running `Developer: Reload Window` from the command palette.
-
-## Customize configuration
-
-See [Vite Configuration Reference](https://vitejs.dev/config/).
-
-## Project Setup
-
-```sh
-npm install
-```
-
-### Compile and Hot-Reload for Development
-
-```sh
-npm run dev
-```
-
-### Type-Check, Compile and Minify for Production
-
-```sh
-npm run build
-```
+# Cista Vue Frontend
+
+The frontend is a Single-Page App implemented with Vue 3. Development uses the Vite server together with the main Python backend, but in production the latter also serves the prebuilt frontend files.
+
+## Recommended IDE Setup
+
+[VSCode](https://code.visualstudio.com/) + [Volar](https://marketplace.visualstudio.com/items?itemName=Vue.volar) (and disable Vetur) + [TypeScript Vue Plugin (Volar)](https://marketplace.visualstudio.com/items?itemName=Vue.vscode-typescript-vue-plugin).
+
+## Type Support for `.vue` Imports in TS
+
+TypeScript cannot handle type information for `.vue` imports by default, so we replace the `tsc` CLI with `vue-tsc` for type checking. In editors, we need [TypeScript Vue Plugin (Volar)](https://marketplace.visualstudio.com/items?itemName=Vue.vscode-typescript-vue-plugin) to make the TypeScript language service aware of `.vue` types.
+
+If the standalone TypeScript plugin doesn't feel fast enough to you, Volar has also implemented a [Take Over Mode](https://github.com/johnsoncodehk/volar/discussions/471#discussioncomment-1361669) that is more performant. You can enable it by the following steps:
+
+1. Disable the built-in TypeScript Extension
+    1) Run `Extensions: Show Built-in Extensions` from VSCode's command palette
+    2) Find `TypeScript and JavaScript Language Features`, right click and select `Disable (Workspace)`
+2. Reload the VSCode window by running `Developer: Reload Window` from the command palette.
+
+## Hot-Reload for Development
+
+### Run the backend
+
+```fish
+hatch shell
+cista --dev -l :8000
+```
+
+### And the Vite server (in another terminal)
+
+```fish
+cd frontend
+npm install
+npm run dev
+```
+Browse to Vite, which will proxy API requests to port 8000. Both servers live reload changes.
+
+
+### Type-Check, Compile and Minify for Production
+
+This is also called by `hatch build` during Python packaging:
+
+```fish
+npm run build
+```
+

frontend/src/App.vue

@@ -21,6 +21,7 @@ import { useMainStore } from '@/stores/main'
 
 import { computed } from 'vue'
 import Router from '@/router/index'
+import type { SortOrder } from './utils/docsort'
 
 interface Path {
   path: string
@@ -57,6 +58,8 @@ const globalShortcutHandler = (event: KeyboardEvent) => {
     if (
       event.key === 'ArrowUp' ||
       event.key === 'ArrowDown' ||
+      event.key === 'ArrowLeft' ||
+      event.key === 'ArrowRight' ||
       (c && event.code === 'Space')
     ) {
       event.preventDefault()
@@ -65,8 +68,17 @@ const globalShortcutHandler = (event: KeyboardEvent) => {
   }
   //console.log("key pressed", event)
   // For up/down implement custom fast repeat
-  if (event.key === 'ArrowUp') vert = keyup ? 0 : event.altKey ? -10 : -1
-  else if (event.key === 'ArrowDown') vert = keyup ? 0 : event.altKey ? 10 : 1
+  let stride = 1
+  if (store.gallery) {
+    const grid = document.querySelector('.gallery') as HTMLElement
+    stride = getComputedStyle(grid).gridTemplateColumns.split(' ').length
+  }
+  else if (event.altKey) stride *= 10
+  // Long if-else machina for all keys we handle here
+  if (event.key === 'ArrowUp') vert = stride * (keyup ? 0 : -1)
+  else if (event.key === 'ArrowDown') vert = stride * (keyup ? 0 : 1)
+  else if (event.key === 'ArrowLeft') vert = keyup ? 0 : -1
+  else if (event.key === 'ArrowRight') vert = keyup ? 0 : 1
   // Find: process on keydown so that we can bypass the built-in search hotkey
   else if (!keyup && event.key === 'f' && (event.ctrlKey || event.metaKey)) {
     headerMain.value!.toggleSearchInput()
@@ -83,13 +95,17 @@ const globalShortcutHandler = (event: KeyboardEvent) => {
   else if (!keyup && event.key === 'a' && (event.ctrlKey || event.metaKey)) {
     fileExplorer.toggleSelectAll()
   }
+  // G toggles Gallery
+  else if (keyup && event.key === 'g') {
+    store.gallery = !store.gallery
+  }
   // Keys 1-3 to sort columns
   else if (
     !input &&
     keyup &&
-    (event.key === '1' || event.key === '2' || event.key === '3')
+    (event.code === 'Backquote' || event.key === '1' || event.key === '2' || event.key === '3')
   ) {
-    fileExplorer.toggleSortColumn(+event.key)
+    store.sort(['', 'name', 'modified', 'size'][+event.key || 0] as SortOrder)
   }
   // Rename
   else if (c && keyup && !event.ctrlKey && (event.key === 'F2' || event.key === 'r')) {
@@ -133,4 +149,3 @@ onUnmounted(() => {
 })
 export type { Path }
 </script>
-@/stores/main

frontend/src/assets/main.css

@@ -14,7 +14,7 @@
   /* The following are overridden by responsive layouts */
   --root-font-size: 1rem;
   --header-font-size: 1rem;
-  --header-height: calc(6.5 * var(--header-font-size));
+  --header-height: 4rem;
 }
 @media (prefers-color-scheme: dark) {
   :root {
@@ -37,12 +37,6 @@
   :root {
     --root-font-size: calc(8px + 8 * 100vw / 1000);
   }
-  header .buttons:has(input[type='search']) > div {
-    display: none;
-  }
-  header .buttons > div:has(input[type='search']) {
-    display: inherit;
-  }
 }
 @media screen and (min-width: 2000px) {
   :root {
@@ -54,6 +48,7 @@
   :root {
     --header-font-size: calc(10px + 10 * 100vh / 600);  /* 20px at 600px height */
     --root-font-size: 0.8rem;
+    --header-height: 2rem;
   }
   header .breadcrumb > * {
     padding-top: calc(8 + 8 * 100vh / 600) !important;
@@ -78,17 +73,13 @@
   }
   header {
     display: flex;
-    flex-direction: row-reverse;
     justify-content: space-between;
-    align-items: end;
   }
-  header .breadcrumb {
-    flex-shrink: 1;
-  }
-  header .breadcrumb > * {
-    flex-shrink: 1;
-    padding-top: 1rem !important;
-    padding-bottom: 1rem !important;
+  header .headermain { order: 1; }
+  header .breadcrumb { align-self: stretch; }
+  header .action-button {
+    width: 2em;
+    height: 2em;
   }
 }
 @media print {
@@ -142,6 +133,9 @@
     left: 0;
   }
 }
+* {
+  box-sizing: border-box;
+}
 html {
   font-size: var(--root-font-size);
   overflow: hidden;

frontend/src/components/BreadCrumb.vue

@@ -12,6 +12,8 @@
       :ref="el => setLinkRef(0, el)"
       :class="{ current: !!isCurrent(0) }"
       :aria-current="isCurrent(0)"
+      @click.prevent="navigate(0)"
+      title="/"
     >
       <component :is="home" />
     </a>
@@ -21,6 +23,7 @@
         :aria-current="isCurrent(index + 1)"
         @click.prevent="navigate(index + 1)"
         :ref="el => setLinkRef(index + 1, el)"
+        :title="`/${longest.slice(0, index + 1).join('/')}`"
       >{{ location }}</a>
     </template>
   </nav>
@@ -101,31 +104,35 @@ watchEffect(() => {
   --breadcrumb-transtime: 0.3s;
 }
 .breadcrumb {
+  flex: 1 1 auto;
   display: flex;
-  list-style: none;
+  min-width: 20%;
+  max-width: 100%;
+  min-height: 2em;
   margin: 0;
   padding: 0 1em 0 0;
 }
 .breadcrumb > a {
+  flex: 0 4 auto;
+  display: flex;
+  align-items: center;
   margin: 0 -0.5em 0 -0.5em;
   padding: 0;
-  max-width: 8em;
   white-space: nowrap;
   text-overflow: ellipsis;
   overflow: hidden;
-  height: 1.5em;
   color: var(--breadcrumb-color);
   padding: 0.3em 1.5em;
   clip-path: polygon(0 0, 1em 50%, 0 100%, 100% 100%, 100% 0, 0 0);
   transition: all var(--breadcrumb-transtime);
 }
-.breadcrumb a:first-child {
-  margin-left: 0;
-  padding-left: .2em;
+.breadcrumb > a:first-child {
+  flex: 0 0 auto;
+  padding-left: 1.5em;
+  padding-right: 1.7em;
   clip-path: none;
 }
-.breadcrumb a:last-child {
-  max-width: none;
+.breadcrumb > a:last-child {
   clip-path: polygon(
     0 0,
     calc(100% - 1em) 0,
@@ -136,7 +143,7 @@ watchEffect(() => {
     0 0
   );
 }
-.breadcrumb a:only-child {
+.breadcrumb > a:only-child {
   clip-path: polygon(
     0 0,
     calc(100% - 1em) 0,
@@ -148,9 +155,9 @@ watchEffect(() => {
 }
 .breadcrumb svg {
   /* FIXME: Custom positioning to align it well; needs proper solution */
-  padding-left: 0.8em;
   width: 1.3em;
   height: 1.3em;
+  margin: -.5em;
   fill: var(--breadcrumb-color);
   transition: fill var(--breadcrumb-transtime);
 }
@@ -170,6 +177,6 @@ watchEffect(() => {
 }
 .breadcrumb a:hover { color: var(--breadcrumb-hover-color) }
 .breadcrumb a:hover svg { fill: var(--breadcrumb-hover-color) }
-.breadcrumb a.current { color: var(--accent-color) }
+.breadcrumb a.current { color: var(--accent-color); max-width: none; flex: 0 1 auto; }
 .breadcrumb a.current svg { fill: var(--accent-color) }
 </style>

frontend/src/components/FileExplorer.vue

@@ -28,11 +28,11 @@
 
         <tr
           :id="`file-${doc.key}`"
-          :class="{ file: !doc.dir, folder: doc.dir, cursor: cursor === doc }"
-          @click="cursor = cursor === doc ? null : doc"
+          :class="{ file: !doc.dir, folder: doc.dir, cursor: store.cursor === doc.key }"
+          @click="store.cursor = store.cursor === doc.key ? '' : doc.key"
           @contextmenu.prevent="contextMenu($event, doc)"
         >
-          <td class="selection" @click.up.stop="cursor = cursor === doc ? doc : null">
+          <td class="selection" @click.up.stop="store.cursor = store.cursor === doc.key ? doc.key : ''">
             <input
               type="checkbox"
               tabindex="-1"
@@ -53,12 +53,12 @@
                 :href="doc.url"
                 tabindex="-1"
                 @contextmenu.prevent
-                @focus.stop="cursor = doc"
+                @focus.stop="store.cursor = doc.key"
                 @keyup.left="router.back()"
                 @keyup.right.stop="ev => { if (doc.dir) (ev.target as HTMLElement).click() }"
                 >{{ doc.name }}</a
               >
-              <button tabindex=-1 v-if="cursor == doc" class="rename-button" @click="() => (editing = doc)">🖊️</button>
+              <button tabindex=-1 v-if="store.cursor == doc.key" class="rename-button" @click="() => (editing = doc)">🖊️</button>
             </template>
           </td>
           <FileModified :doc=doc :key=nowkey />
@@ -75,7 +75,6 @@
       </tr>
     </tbody>
   </table>
-  <div v-else class="empty-container">Nothing to see here</div>
 </template>
 
 <script setup lang="ts">
@@ -88,6 +87,7 @@ import { formatSize } from '@/utils'
 import { useRouter } from 'vue-router'
 import ContextMenu from '@imengyu/vue3-context-menu'
 import type { SortOrder } from '@/utils/docsort'
+import type SvgButtonVue from './SvgButton.vue'
 
 const props = defineProps<{
   path: Array<string>
@@ -95,7 +95,6 @@ const props = defineProps<{
 }>()
 const store = useMainStore()
 const router = useRouter()
-const cursor = shallowRef<Doc | null>(null)
 // File rename
 const editing = shallowRef<Doc | null>(null)
 const rename = (doc: Doc, newName: string) => {
@@ -143,18 +142,18 @@ defineExpose({
     if (order) store.toggleSort(order as SortOrder)
   },
   isCursor() {
-    return cursor.value !== null && editing.value === null
+    return store.cursor && editing.value === null
   },
   cursorRename() {
-    editing.value = cursor.value
+    editing.value = store.cursor
   },
   cursorSelect() {
-    const doc = cursor.value
-    if (!doc) return
-    if (store.selected.has(doc.key)) {
-      store.selected.delete(doc.key)
+    const key = store.cursor
+    if (!key) return
+    if (store.selected.has(key)) {
+      store.selected.delete(key)
     } else {
-      store.selected.add(doc.key)
+      store.selected.add(key)
     }
     this.cursorMove(1)
   },
@@ -162,17 +161,17 @@ defineExpose({
     // Move cursor up or down (keyboard navigation)
     const docs = props.documents
     if (docs.length === 0) {
-      cursor.value = null
+      store.cursor = ''
       return
     }
     const N = docs.length
     const mod = (a: number, b: number) => ((a % b) + b) % b
     const increment = (i: number, d: number) => mod(i + d, N + 1)
     const index =
-      cursor.value !== null ? docs.indexOf(cursor.value) : docs.length
+      store.cursor ? docs.find(doc => doc.key === store.cursor) : docs.length
     const moveto = increment(index, d)
-    cursor.value = docs[moveto] ?? null
-    const tr = cursor.value ? document.getElementById(`file-${cursor.value.key}`) : null
+    store.cursor = docs[moveto]?.key ?? ''
+    const tr = store.cursor ? document.getElementById(`file-${store.cursor}`) : ''
     if (select) {
       // Go forwards, possibly wrapping over the end; the last entry is not toggled
       let [begin, end] = d > 0 ? [index, moveto] : [moveto, index]
@@ -202,18 +201,18 @@ const focusBreadcrumb = () => {
 let scrolltimer: any = null
 let scrolltr: any = null
 watchEffect(() => {
-  if (cursor.value && cursor.value !== editing.value) editing.value = null
-  if (editing.value) cursor.value = editing.value
-  if (cursor.value) {
+  if (store.cursor && store.cursor !== editing.value?.key) editing.value = null
+  if (editing.value) store.cursor = editing.value?.key
+  if (store.cursor) {
     const a = document.querySelector(
-      `#file-${cursor.value.key} .name a`
+      `#file-${store.cursor} .name a`
     ) as HTMLAnchorElement | null
     if (a) a.focus()
   }
 })
 watchEffect(() => {
-  if (!props.documents.length && cursor.value) {
-    cursor.value = null
+  if (!props.documents.length && store.cursor) {
+    store.cursor = ''
     focusBreadcrumb()
   }
 })
@@ -287,7 +286,7 @@ const allSelected = computed({
 const loc = computed(() => props.path.join('/'))
 
 const contextMenu = (ev: MouseEvent, doc: Doc) => {
-  cursor.value = doc
+  store.cursor = doc.key
   ContextMenu.showContextMenu({
     x: ev.x, y: ev.y, items: [
       { label: 'Rename', onClick: () => { editing.value = doc } },

frontend/src/components/Gallery.vue

@@ -0,0 +1,241 @@
+<template>
+  <div v-if="props.documents.length || editing" class="gallery">
+    <template v-for="(doc, index) in documents" :key="doc.key">
+      <GalleryFigure :doc="doc" :index="index">
+        <BreadCrumb :path="doc.loc ? doc.loc.split('/') : []" v-if="showFolderBreadcrumb(index)" class="folder-change"/>
+      </GalleryFigure>
+    </template>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, watchEffect, shallowRef, onMounted, onUnmounted } from 'vue'
+import { useMainStore } from '@/stores/main'
+import { Doc } from '@/repositories/Document'
+import FileRenameInput from './FileRenameInput.vue'
+import { connect, controlUrl } from '@/repositories/WS'
+import { formatSize } from '@/utils'
+import { useRouter } from 'vue-router'
+import ContextMenu from '@imengyu/vue3-context-menu'
+import type { SortOrder } from '@/utils/docsort'
+
+const props = defineProps<{
+  path: Array<string>
+  documents: Doc[]
+}>()
+const store = useMainStore()
+const router = useRouter()
+// File rename
+const editing = shallowRef<Doc | null>(null)
+const rename = (doc: Doc, newName: string) => {
+  const oldName = doc.name
+  const control = connect(controlUrl, {
+    message(ev: MessageEvent) {
+      const msg = JSON.parse(ev.data)
+      if ('error' in msg) {
+        console.error('Rename failed', msg.error.message, msg.error)
+        doc.name = oldName
+      } else {
+        console.log('Rename succeeded', msg)
+      }
+    }
+  })
+  control.onopen = () => {
+    control.send(
+      JSON.stringify({
+        op: 'rename',
+        path: `${doc.loc}/${oldName}`,
+        to: newName
+      })
+    )
+  }
+  doc.name = newName // We should get an update from watch but this is quicker
+}
+defineExpose({
+  newFolder() {
+    const now = Math.floor(Date.now() / 1000)
+    editing.value = new Doc({
+      loc: loc.value,
+      key: 'new',
+      name: 'New Folder',
+      dir: true,
+      mtime: now,
+      size: 0,
+    })
+  },
+  toggleSelectAll() {
+    console.log('Select')
+    allSelected.value = !allSelected.value
+  },
+  toggleSortColumn(column: number) {
+    const order = ['', 'name', 'modified', 'size', ''][column]
+    if (order) store.toggleSort(order as SortOrder)
+  },
+  isCursor() {
+    return store.cursor && editing.value === null
+  },
+  cursorRename() {
+    editing.value = props.documents.find(doc => doc.key === store.cursor) ?? null
+  },
+  cursorSelect() {
+    const key = store.cursor
+    if (!key) return
+    if (store.selected.has(key)) {
+      store.selected.delete(key)
+    } else {
+      store.selected.add(key)
+    }
+    this.cursorMove(1)
+  },
+  cursorMove(d: number, select = false) {
+    // Move cursor up or down (keyboard navigation)
+    const docs = props.documents
+    if (docs.length === 0) {
+      store.cursor = ''
+      return
+    }
+    const N = docs.length
+    const mod = (a: number, b: number) => ((a % b) + b) % b
+    const increment = (i: number, d: number) => mod(i + d, N + 1)
+    const index =
+      store.cursor ? docs.findIndex(doc => doc.key === store.cursor) : docs.length
+    const moveto = increment(index, d)
+    store.cursor = docs[moveto]?.key ?? ''
+    const tr = store.cursor ? document.getElementById(`file-${store.cursor}`) : ''
+    if (select) {
+      // Go forwards, possibly wrapping over the end; the last entry is not toggled
+      let [begin, end] = d > 0 ? [index, moveto] : [moveto, index]
+      for (let p = begin; p !== end; p = increment(p, 1)) {
+        if (p === N) continue
+        const key = docs[p].key
+        if (store.selected.has(key)) store.selected.delete(key)
+        else store.selected.add(key)
+      }
+    }
+    // @ts-ignore
+    scrolltr = tr
+    if (!scrolltimer) {
+      scrolltimer = setTimeout(() => {
+        if (scrolltr)
+          scrolltr.scrollIntoView({ block: 'center', behavior: 'smooth' })
+        scrolltimer = null
+      }, 300)
+    }
+    if (moveto === N) focusBreadcrumb()
+  }
+})
+const focusBreadcrumb = () => {
+  const el = document.querySelector('.breadcrumb') as HTMLElement | null
+  if (el) el.focus()
+}
+let scrolltimer: any = null
+let scrolltr: any = null
+watchEffect(() => {
+  if (store.cursor && store.cursor !== editing.value?.key) editing.value = null
+  if (editing.value) store.cursor = editing.value.key
+  if (store.cursor) {
+    const a = document.querySelector(
+      `#file-${store.cursor} a`
+    ) as HTMLAnchorElement | null
+    if (a) a.focus()
+  }
+})
+watchEffect(() => {
+  if (!props.documents.length && store.cursor) {
+    store.cursor = ''
+    focusBreadcrumb()
+  }
+})
+let nowkey = ref(0)
+let modifiedTimer: any = null
+const updateModified = () => {
+  nowkey.value = Math.floor(Date.now() / 1000)
+}
+onMounted(() => { updateModified(); modifiedTimer = setInterval(updateModified, 1000) })
+onUnmounted(() => { clearInterval(modifiedTimer) })
+const mkdir = (doc: Doc, name: string) => {
+  const control = connect(controlUrl, {
+    open() {
+      control.send(
+        JSON.stringify({
+          op: 'mkdir',
+          path: `${doc.loc}/${name}`
+        })
+      )
+    },
+    message(ev: MessageEvent) {
+      const msg = JSON.parse(ev.data)
+      if ('error' in msg) {
+        console.error('Mkdir failed', msg.error.message, msg.error)
+        editing.value = null
+      } else {
+        console.log('mkdir', msg)
+        router.push(doc.urlrouter)
+      }
+    }
+  })
+  // We should get an update from watch but this is quicker
+  doc.name = name
+  doc.key = crypto.randomUUID()
+}
+const showFolderBreadcrumb = (i: number) => {
+  const docs = props.documents
+  const docloc = docs[i].loc
+  return i === 0 ? docloc !== loc.value : docloc !== docs[i - 1].loc
+}
+const selectionIndeterminate = computed({
+  get: () => {
+    return (
+      props.documents.length > 0 &&
+      props.documents.some((doc: Doc) => store.selected.has(doc.key)) &&
+      !allSelected.value
+    )
+  },
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  set: (value: boolean) => {}
+})
+const allSelected = computed({
+  get: () => {
+    return (
+      props.documents.length > 0 &&
+      props.documents.every((doc: Doc) => store.selected.has(doc.key))
+    )
+  },
+  set: (value: boolean) => {
+    console.log('Setting allSelected', value)
+    for (const doc of props.documents) {
+      if (value) {
+        store.selected.add(doc.key)
+      } else {
+        store.selected.delete(doc.key)
+      }
+    }
+  }
+})
+
+const loc = computed(() => props.path.join('/'))
+
+const contextMenu = (ev: MouseEvent, doc: Doc) => {
+  store.cursor = doc.key
+  ContextMenu.showContextMenu({
+    x: ev.x, y: ev.y, items: [
+      { label: 'Rename', onClick: () => { editing.value = doc } },
+    ],
+  })
+}
+</script>
+
+<style scoped>
+.gallery {
+  padding: 1rem;
+  width: 100%;
+  display: grid;
+  gap: .5rem;
+  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
+  grid-auto-rows: 15rem;
+}
+.breadcrumb {
+  position: absolute;
+  z-index: 1;
+}
+</style>

frontend/src/components/GalleryFigure.vue

@@ -0,0 +1,97 @@
+<template>
+  <a
+    :id="`file-${doc.key}`"
+    :href="doc.url"
+    tabindex=0
+    :class="{ file: !doc.dir, folder: doc.dir, cursor: store.cursor === doc.key }"
+    @contextmenu.prevent
+    @focus.stop="store.cursor = doc.key"
+    @click="ev => {
+      store.cursor = store.cursor === doc.key ? '' : doc.key
+      if (media) { media.play(); ev.preventDefault() }
+    }"
+  >
+    <figure>
+      <slot></slot>
+      <MediaPreview ref=media :doc="doc" />
+      <caption>
+        <label>
+          <SelectBox :doc=doc />
+          <span :title="doc.name + '\n' + doc.modified + '\n' + doc.sizedisp">{{ doc.name }}</span>
+        </label>
+      </caption>
+    </figure>
+  </a>
+</template>
+
+<script setup lang=ts>
+import { defineProps, ref } from 'vue'
+import { useMainStore } from '@/stores/main'
+import { Doc } from '@/repositories/Document'
+import MediaPreview from '@/components/MediaPreview.vue'
+
+const store = useMainStore()
+const props = defineProps<{
+  doc: Doc
+  index: number
+}>()
+const media = ref<typeof MediaPreview | null>(null)
+</script>
+
+<style scoped>
+.gallery figure {
+  height: 15rem;
+  position: relative;
+  border-radius: .5rem;
+  overflow: hidden;
+  margin: 0;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: space-between;
+  overflow: hidden;
+}
+figure caption {
+  font-weight: 600;
+  color: var(--text-color);
+  text-shadow: 0 0 .2rem #000, 0 0 1rem #000;
+}
+.cursor caption {
+  background: var(--accent-color);
+}
+caption {
+  position: absolute;
+  overflow: hidden;
+  bottom: 0;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  width: 100%;
+}
+caption label {
+  width: 100%;
+  display: flex;
+  align-items: center;
+}
+label span {
+  flex: 1 1;
+  margin-right: 2rem;
+  text-align: center;
+  overflow: hidden;
+  white-space: nowrap;
+  text-overflow: ellipsis;
+}
+label input[type='checkbox'] {
+  width: 2rem;
+  height: 2rem;
+  opacity: 0;
+  flex-shrink: 0;
+}
+label input[type='checkbox']:checked {
+  opacity: 1;
+}
+a {
+  text-decoration: none;
+}
+
+</style>

frontend/src/components/HeaderMain.vue

@@ -1,31 +1,30 @@
 <template>
-  <nav class="headermain">
-    <div class="buttons">
-      <template v-if="store.error">
-        <div class="error-message" @click="store.error = ''">{{ store.error }}</div>
-        <div class="smallgap"></div>
-      </template>
-      <UploadButton :path="props.path" />
-      <SvgButton
-        name="create-folder"
-        data-tooltip="New folder"
-        @click="() => store.fileExplorer!.newFolder()"
+  <nav class="headermain buttons">
+    <template v-if="store.error">
+      <div class="error-message" @click="store.error = ''">{{ store.error }}</div>
+      <div class="smallgap"></div>
+    </template>
+    <UploadButton :path="props.path" />
+    <SvgButton
+      name="create-folder"
+      data-tooltip="New folder"
+      @click="() => store.fileExplorer!.newFolder()"
+    />
+    <slot></slot>
+    <div class="spacer smallgap"></div>
+    <template v-if="showSearchInput">
+      <input
+        ref="search"
+        type="search"
+        :value="query"
+        @input="updateSearch"
+        placeholder="Search words"
+        class="margin-input"
       />
-      <slot></slot>
-      <div class="spacer smallgap"></div>
-      <template v-if="showSearchInput">
-        <input
-          ref="search"
-          type="search"
-          :value="query"
-          @input="updateSearch"
-          placeholder="Search words"
-          class="margin-input"
-        />
-      </template>
-      <SvgButton ref="searchButton" name="find" @click.prevent="toggleSearchInput" />
-      <SvgButton name="cog" @click="settingsMenu" />
-    </div>
+    </template>
+    <SvgButton ref="searchButton" name="find" @click.prevent="toggleSearchInput" />
+    <SvgButton name="eye" @click="store.gallery = !store.gallery" />
+    <SvgButton name="cog" @click="settingsMenu" />
   </nav>
 </template>
 
@@ -93,24 +92,18 @@ defineExpose({
 
 <style scoped>
 .buttons {
+  flex: 1000 0 auto;
   padding: 0;
   display: flex;
   align-items: center;
-  height: 3.5em;
   z-index: 10;
 }
-.buttons > * {
-  flex-shrink: 1;
-}
 input[type='search'] {
   background: var(--input-background);
   color: var(--input-color);
   border: 0;
   border-radius: 0.1em;
-  padding: 0.5em;
   outline: none;
-  font-size: 1.5em;
-  max-width: 30vw;
+  max-width: 15ch;
 }
 </style>
-@/stores/main

frontend/src/components/MediaPreview.vue

@@ -0,0 +1,94 @@
+<template>
+  <img v-if=doc.img :src=doc.url alt="">
+  <span v-else-if=doc.dir class="folder icon"></span>
+  <video v-else-if=video() ref=media :src=doc.url controls preload=metadata @click.prevent>📄</video>
+  <audio v-else-if=audio() ref=media :src=doc.url controls preload=metadata @click.stop>📄</audio>
+  <embed v-else-if=embed() :src=doc.url type=text/plain @click.stop @scroll.prevent>
+  <span v-else-if=archive() class="archive icon"></span>
+  <span v-else class="file icon" :class="`ext-${doc.ext}`"></span>
+</template>
+
+<script setup lang=ts>
+import { defineProps, ref } from 'vue'
+import type { Doc } from '@/repositories/Document'
+
+const media = ref<HTMLAudioElement | HTMLVideoElement | null>(null)
+
+const props = defineProps<{
+  doc: Doc
+}>()
+
+defineExpose({
+  play() {
+    if (media.value) {
+      media.value.play()
+    }
+  }
+})
+
+
+const video = () => ['mkv', 'mp4', 'webm', 'mov', 'avi'].includes(props.doc.ext)
+const audio = () => ['mp3', 'flac', 'ogg', 'aac'].includes(props.doc.ext)
+const embed = () => ['txt', 'py', 'html', 'css', 'js', 'json', 'xml', 'csv', 'tsv'].includes(props.doc.ext)
+const archive = () => ['zip', 'tar', 'gz', 'bz2', 'xz', '7z', 'rar'].includes(props.doc.ext)
+</script>
+
+<style scoped>
+img, embed, .icon {
+  font-size: 10em;
+  border-radius: .5rem;
+  overflow: hidden;
+  text-align: center;
+  object-fit: cover;
+  object-position: center;
+  min-width: 50%;
+  height: 100%;
+}
+audio, video {
+  height: 100%;
+  min-width: 50%;
+  max-width: 100%;
+  padding-bottom: 2rem;
+  margin: auto;
+}
+.folder::before {
+  content: '📁';
+}
+.folder:hover::before, .cursor .folder::before {
+  content: '📂';
+}
+.archive::before {
+  content: '📦';
+}
+.file::before {
+  content: '📄';
+}
+.ext-img::before {
+  content: '💿';
+}
+.ext-exe::before, .ext-msi::before, .ext-dmg::before, .ext-pkg::before {
+  content: '⚙️';
+}
+.ext-torrent::before {
+  content: '🏴‍☠️';
+}
+.icon {
+  filter: brightness(0.9);
+}
+figure.cursor .icon {
+  filter: brightness(1);
+}
+img::before, video::before {
+  /* broken image */
+  background: #888;
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  top: 0;
+  left: 0;
+  text-align: center;
+  text-shadow: 0 0 .5rem #000;
+  filter: grayscale(1);
+  content: '❌';
+}
+</style>

frontend/src/components/SelectBox.vue

@@ -0,0 +1,23 @@
+<template>
+  <input type=checkbox tabindex=-1 :checked="store.selected.has(doc.key)"
+    @change="ev => {
+      if ((ev.target as HTMLInputElement).checked) {
+        store.selected.add(doc.key)
+      } else {
+        store.selected.delete(doc.key)
+      }
+    }"
+  >
+</template>
+
+<script setup lang=ts>
+import { defineProps } from 'vue'
+import { useMainStore } from '@/stores/main'
+import type { Doc } from '@/repositories/Document'
+
+const props = defineProps<{
+  doc: Doc
+}>()
+const store = useMainStore()
+
+</script>

frontend/src/repositories/Document.ts

@@ -36,6 +36,14 @@ export class Doc {
   get urlrouter(): string {
     return this.url.replace(/^\/#/, '')
   }
+  get img(): boolean {
+    const ext = this.name.split('.').pop()?.toLowerCase()
+    return ['jpg', 'jpeg', 'png', 'gif', 'webp', 'avif', 'svg'].includes(ext || '')
+  }
+  get ext(): string {
+    const ext = this.name.split('.').pop()
+    return ext ? ext.toLowerCase() : ''
+  }
 }
 export type errorEvent = {
   error: {

frontend/src/stores/main.ts

@@ -23,6 +23,8 @@ export const useMainStore = defineStore({
     fileExplorer: null as any,
     error: '' as string,
     connected: false,
+    gallery: false,
+    cursor: '' as string,
     server: {} as Record<string, any>,
     prefs: {
       sortListing: '' as SortOrder,
@@ -77,6 +79,10 @@ export const useMainStore = defineStore({
       if (this.query) this.prefs.sortFiltered = this.prefs.sortFiltered === name ? '' : name
       else this.prefs.sortListing = this.prefs.sortListing === name ? '' : name
     },
+    sort(name: SortOrder | '') {
+      if (this.query) this.prefs.sortFiltered = name
+      else this.prefs.sortListing = name
+    },
   },
   getters: {
     sortOrder(): SortOrder { return this.query ? this.prefs.sortFiltered : this.prefs.sortListing },

frontend/src/views/ExplorerView.vue

@@ -1,19 +1,40 @@
 <template>
-  <FileExplorer
+  <div v-if="!props.path || documents.length === 0" class="empty-container">
+    <component :is="cog" class="cog"/>
+    <p v-if="!store.connected">No Connection</p>
+    <p v-else-if="store.document.length === 0">Waiting for Files</p>
+    <p v-else-if="store.query">No matches!</p>
+    <p v-else-if="!store.document.find(doc => doc.loc.length + 1 === props.path.length && [...doc.loc, doc.name].join('/') === props.path.join('/'))">Folder not found.</p>
+    <p v-else>Empty folder</p>
+  </div>
+  <Gallery
+    v-else-if="store.gallery"
     ref="fileExplorer"
-    :key="Router.currentRoute.value.path"
+    :key="`gallery-${Router.currentRoute.value.path}`"
     :path="props.path"
     :documents="documents"
-    v-if="props.path"
   />
+  <FileExplorer
+    v-else
+    ref="fileExplorer"
+    :key="`explorer-${Router.currentRoute.value.path}`"
+    :path="props.path"
+    :documents="documents"
+  />
+  <div v-if="!store.gallery && documents.some(doc => doc.img)" class="suggest-gallery">
+    <p>Media files found. Would you like a gallery view?</p>
+    <SvgButton name="eye" taborder=0 @click="() => { store.gallery = true }">Gallery</SvgButton>
+  </div>
 </template>
 
 <script setup lang="ts">
 import { watchEffect, ref, computed } from 'vue'
 import { useMainStore } from '@/stores/main'
 import Router from '@/router/index'
-import { needleFormat, localeIncludes, collator } from '@/utils';
-import { sorted } from '@/utils/docsort';
+import { needleFormat, localeIncludes, collator } from '@/utils'
+import { sorted } from '@/utils/docsort'
+import FileExplorer from '@/components/FileExplorer.vue'
+import cog from '@/assets/svg/cog.svg'
 
 const store = useMainStore()
 const fileExplorer = ref()
@@ -64,3 +85,39 @@ watchEffect(() => {
   store.query = props.query
 })
 </script>
+
+<style scoped>
+.empty-container {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  height: 100%;
+  font-size: 2rem;
+  text-shadow: 0 0 1rem #000, 0 0 2rem #000;
+  color: var(--accent-color);
+}
+@keyframes rotate {
+  0% { transform: rotate(0deg); }
+  100% { transform: rotate(359deg); }
+}
+.suggest-gallery p {
+  font-size: 2rem;
+  color: var(--accent-color);
+}
+.suggest-gallery {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+}
+
+svg.cog {
+  width: 10rem;
+  height: 10rem;
+  margin: 0 auto;
+  animation: rotate 10s linear infinite;
+  filter: drop-shadow(0 0 1rem black);
+  fill: var(--primary-color);
+}
+</style>