From 20d04361bca5fbe352c23c6e6f45eead1d8c2da6 Mon Sep 17 00:00:00 2001
From: marwin <marwin@creamfresh.xyz>
Date: Sat, 15 Aug 2026 20:36:54 +0200
Subject: [PATCH] TUI: Statusleiste mit Akkustand und Uhrzeit
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Neues diora_tui/statusbar.py: StatusBar-Widget, unten rechts auf Bibliotheks-
und Reader-Screen, zeigt Akkustand (psutil.sensors_battery(), degradiert
sauber zu reiner Uhrzeit auf Geräten ohne Akku) + aktuelle Uhrzeit,
sekündlich aktualisiert.

Getestet: Anzeige und Aktualisierung auf beiden Screens verifiziert.
---
 tui/README.md                  |  3 +++
 tui/diora_tui/app.py           |  2 ++
 tui/diora_tui/app.tcss         |  9 +++++++
 tui/diora_tui/reader_screen.py |  2 ++
 tui/diora_tui/statusbar.py     | 44 ++++++++++++++++++++++++++++++++++
 tui/pyproject.toml             |  1 +
 6 files changed, 61 insertions(+)
 create mode 100644 tui/diora_tui/statusbar.py

diff --git a/tui/README.md b/tui/README.md
index 960dc6d..4af7ad6 100644
--- a/tui/README.md
+++ b/tui/README.md
@@ -44,6 +44,9 @@ Tastenkürzel:
 Der Fließtext ist auf 120 Zeichen Breite begrenzt und horizontal zentriert (lesbarer als
 volle Terminalbreite bei breiten Fenstern).
 
+Unten rechts zeigt eine Statusleiste Akkustand (falls vorhanden, via `psutil`) und Uhrzeit,
+sekündlich aktualisiert, auf Bibliotheks- und Reader-Ansicht.
+
 Die Bibliotheksansicht ist nach zuletzt geöffnetem Buch sortiert (neueste zuerst; anhand
 des Zeitstempels der zuletzt gespeicherten Position), und blendet gelesene Bücher
 standardmäßig aus (`EBook.is_read` aus dem Sync-Snapshot, lokal in `library.json`
diff --git a/tui/diora_tui/app.py b/tui/diora_tui/app.py
index 350de9b..883df81 100644
--- a/tui/diora_tui/app.py
+++ b/tui/diora_tui/app.py
@@ -17,6 +17,7 @@ from textual.widgets import Footer, Header, Label, ListItem, ListView
 from . import config as config_mod
 from . import crypto, epub, library_meta, progress, remote
 from .reader_screen import ReaderScreen
+from .statusbar import StatusBar
 
 DEFAULT_LIBRARY = Path.home() / "Books"
 
@@ -38,6 +39,7 @@ class LibraryScreen(Screen):
     def compose(self) -> ComposeResult:
         yield Header()
         yield ListView(id="library-list")
+        yield StatusBar()
         yield Footer()
 
     def on_mount(self) -> None:
diff --git a/tui/diora_tui/app.tcss b/tui/diora_tui/app.tcss
index d707750..06172cd 100644
--- a/tui/diora_tui/app.tcss
+++ b/tui/diora_tui/app.tcss
@@ -2,6 +2,15 @@
     height: 1fr;
 }
 
+StatusBar {
+    dock: bottom;
+    height: 1;
+    padding: 0 1;
+    background: $panel;
+    color: $text-muted;
+    text-align: right;
+}
+
 #reader-scroll {
     height: 1fr;
     padding: 1 2;
diff --git a/tui/diora_tui/reader_screen.py b/tui/diora_tui/reader_screen.py
index 9dbd17f..f820a0f 100644
--- a/tui/diora_tui/reader_screen.py
+++ b/tui/diora_tui/reader_screen.py
@@ -25,6 +25,7 @@ from textual.widgets import Footer, Header, Label, LoadingIndicator, Static
 
 from . import api, blocks, cache, config as config_mod, layout, progress
 from .book_view import ContinuousBookView
+from .statusbar import StatusBar
 
 MAX_LINE_WIDTH = 120
 AUTOSAVE_INTERVAL = 5.0
@@ -88,6 +89,7 @@ class ReaderScreen(Screen):
             # nothing to clamp against and silently resets to 0.
             self._book_view = ContinuousBookView(_EMPTY_LAYOUT)
             yield self._book_view
+        yield StatusBar()
         yield Footer()
 
     def on_mount(self) -> None:
diff --git a/tui/diora_tui/statusbar.py b/tui/diora_tui/statusbar.py
new file mode 100644
index 0000000..e38675a
--- /dev/null
+++ b/tui/diora_tui/statusbar.py
@@ -0,0 +1,44 @@
+"""Bottom status bar: battery level + current time, refreshed every second.
+Battery is read via psutil (cross-platform); on a desktop machine with no
+battery, psutil.sensors_battery() returns None and the bar just shows time.
+"""
+
+from __future__ import annotations
+
+from datetime import datetime
+
+from textual.widgets import Static
+
+try:
+    import psutil
+except ImportError:
+    psutil = None  # battery display degrades gracefully to time-only
+
+
+class StatusBar(Static):
+    def on_mount(self) -> None:
+        self._refresh()
+        self.set_interval(1.0, self._refresh)
+
+    def _refresh(self) -> None:
+        self.update(self._render_text())
+
+    def _render_text(self) -> str:
+        parts = []
+        battery = self._battery_text()
+        if battery:
+            parts.append(battery)
+        parts.append(datetime.now().strftime("%H:%M:%S"))
+        return "  ".join(parts)
+
+    def _battery_text(self) -> str | None:
+        if psutil is None:
+            return None
+        try:
+            battery = psutil.sensors_battery()
+        except Exception:
+            return None
+        if battery is None:
+            return None
+        state = "lädt" if battery.power_plugged else "Akku"
+        return f"{state} {round(battery.percent)}%"
diff --git a/tui/pyproject.toml b/tui/pyproject.toml
index 80d5a24..969d473 100644
--- a/tui/pyproject.toml
+++ b/tui/pyproject.toml
@@ -11,6 +11,7 @@ dependencies = [
     "platformdirs>=4.0",
     "requests>=2.31",
     "cryptography>=42.0",
+    "psutil>=5.9",
 ]
 
 [project.scripts]