fix: VideoKonverter v4.0.3 - JSON-Import-Fix, Player D-Pad-Navigation, Overlay-Bugfix

- import json in library_api.py ergänzt (fehlte, Video-Info-API crashte)
- Player: D-Pad-Navigation für Samsung TV Fernbedienung eingebaut
- Player: Samsung Farbtasten (Rot=Audio, Grün=Subs, Gelb=Qualität, Blau=Speed)
- Player: Overlay zeigt nur noch die zum Button passende Sektion
- Player: Auto-Fokus beim Öffnen von Overlays

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

video-konverter/app/routes/library_api.py

@@ -1,5 +1,6 @@
 """REST API Endpoints fuer die Video-Bibliothek"""
 import asyncio
+import json
 import logging
 import aiomysql
 from aiohttp import web

video-konverter/app/static/tv/js/player.js

@@ -285,6 +285,15 @@ function toggleOverlay() {
     if (overlayOpen) {
         renderOverlay();
         showControls();
+        // Nur Geschwindigkeit (Audio/Subs/Qualitaet haben eigene Buttons)
+        overlay.querySelectorAll(".player-overlay-section").forEach(s => {
+            s.style.display = s.id === "overlay-speed" ? "" : "none";
+        });
+        var el = document.getElementById("overlay-speed");
+        if (el) {
+            var firstBtn = el.querySelector("[data-focusable]");
+            if (firstBtn) firstBtn.focus();
+        }
     }
 }
 
@@ -295,6 +304,9 @@ function openOverlaySection(section) {
         // Bereits offen -> schliessen
         overlayOpen = false;
         overlay.style.display = "none";
+        // Alle Sektionen wieder sichtbar machen
+        overlay.querySelectorAll(".player-overlay-section").forEach(
+            s => s.style.display = "");
         return;
     }
     overlayOpen = true;
@@ -302,8 +314,25 @@ function openOverlaySection(section) {
     renderOverlay();
     showControls();
     if (section) {
+        // Nur die gewaehlte Sektion anzeigen, andere verstecken
+        overlay.querySelectorAll(".player-overlay-section").forEach(s => {
+            s.style.display = s.id === "overlay-" + section ? "" : "none";
+        });
         var el = document.getElementById("overlay-" + section);
-        if (el) el.scrollIntoView({ behavior: "smooth" });
+        if (el) {
+            var firstBtn = el.querySelector("[data-focusable]");
+            if (firstBtn) firstBtn.focus();
+        }
+    } else {
+        // Settings-Button: nur Geschwindigkeit (Audio/Subs/Qualitaet haben eigene Buttons)
+        overlay.querySelectorAll(".player-overlay-section").forEach(s => {
+            s.style.display = s.id === "overlay-speed" ? "" : "none";
+        });
+        var el = document.getElementById("overlay-speed");
+        if (el) {
+            var firstBtn = el.querySelector("[data-focusable]");
+            if (firstBtn) firstBtn.focus();
+        }
     }
 }
 
@@ -435,6 +464,45 @@ function cancelNext() {
     setTimeout(() => window.history.back(), 500);
 }
 
+// === D-Pad Navigation fuer Fernbedienung ===
+
+/**
+ * Fokussierbare Elemente im aktuellen Kontext finden.
+ * Im Overlay: nur Overlay-Buttons. Sonst: Player-Control-Buttons.
+ */
+function _getFocusables() {
+    if (overlayOpen) {
+        const overlay = document.getElementById("player-overlay");
+        return overlay ? Array.from(overlay.querySelectorAll("[data-focusable]")) : [];
+    }
+    // "Naechste Episode" oder "Schaust du noch" Overlay?
+    const nextOv = document.getElementById("next-overlay");
+    if (nextOv && nextOv.style.display !== "none") {
+        return Array.from(nextOv.querySelectorAll("[data-focusable]"));
+    }
+    const stillOv = document.getElementById("still-watching-overlay");
+    if (stillOv && stillOv.style.display !== "none") {
+        return Array.from(stillOv.querySelectorAll("[data-focusable]"));
+    }
+    // Player-Controls
+    const controls = document.getElementById("player-controls");
+    return controls ? Array.from(controls.querySelectorAll("[data-focusable]")) : [];
+}
+
+function _focusNext(direction) {
+    const items = _getFocusables();
+    if (!items.length) return false;
+    const cur = items.indexOf(document.activeElement);
+    let next;
+    if (direction === 1) {
+        next = cur < 0 ? 0 : Math.min(cur + 1, items.length - 1);
+    } else {
+        next = cur < 0 ? items.length - 1 : Math.max(cur - 1, 0);
+    }
+    items[next].focus();
+    return true;
+}
+
 // === Tastatur-Steuerung ===
 
 function onKeyDown(e) {
@@ -443,29 +511,109 @@ function onKeyDown(e) {
         10009: "Escape", 10182: "Escape",
         415: "Play", 19: "Pause", 413: "Stop",
         417: "FastForward", 412: "Rewind",
+        // Samsung Farbtasten
+        403: "ColorRed", 404: "ColorGreen",
+        405: "ColorYellow", 406: "ColorBlue",
     };
     const key = keyMap[e.keyCode] || e.key;
 
-    // Overlay offen? -> Navigation im Overlay
+    const active = document.activeElement;
-    if (overlayOpen && (key === "Escape" || key === "Backspace")) {
+    const buttonFocused = active && active.hasAttribute("data-focusable") &&
-        toggleOverlay();
+        active.tagName === "BUTTON";
-        e.preventDefault();
+
-        return;
+    // --- Overlay offen: D-Pad navigiert im Overlay ---
+    if (overlayOpen) {
+        switch (key) {
+            case "Escape": case "Backspace":
+                toggleOverlay();
+                // Focus zurueck auf Settings-Button
+                const btnSettings = document.getElementById("btn-settings");
+                if (btnSettings) btnSettings.focus();
+                e.preventDefault(); return;
+            case "ArrowUp":
+                _focusNext(-1); e.preventDefault(); return;
+            case "ArrowDown":
+                _focusNext(1); e.preventDefault(); return;
+            case "ArrowLeft":
+                _focusNext(-1); e.preventDefault(); return;
+            case "ArrowRight":
+                _focusNext(1); e.preventDefault(); return;
+            case "Enter":
+                if (buttonFocused) active.click();
+                e.preventDefault(); return;
+        }
     }
 
+    // --- "Naechste Episode" / "Schaust du noch" Overlay ---
+    const nextOv = document.getElementById("next-overlay");
+    const stillOv = document.getElementById("still-watching-overlay");
+    const modalOpen = (nextOv && nextOv.style.display !== "none") ||
+                      (stillOv && stillOv.style.display !== "none");
+    if (modalOpen) {
+        switch (key) {
+            case "ArrowLeft": case "ArrowRight":
+                _focusNext(key === "ArrowRight" ? 1 : -1);
+                e.preventDefault(); return;
+            case "Enter":
+                if (buttonFocused) active.click();
+                e.preventDefault(); return;
+        }
+    }
+
+    // --- Controls sichtbar + Button fokussiert: D-Pad navigiert ---
+    if (controlsVisible && buttonFocused) {
+        switch (key) {
+            case "ArrowLeft":
+                _focusNext(-1); showControls(); e.preventDefault(); return;
+            case "ArrowRight":
+                _focusNext(1); showControls(); e.preventDefault(); return;
+            case "ArrowUp":
+                // Vom Button weg = Controls ausblenden, Video steuern
+                active.blur(); showControls(); e.preventDefault(); return;
+            case "ArrowDown":
+                active.blur(); showControls(); e.preventDefault(); return;
+            case "Enter":
+                active.click(); showControls(); e.preventDefault(); return;
+        }
+    }
+
+    // --- Standard Player-Tasten ---
     switch (key) {
-        case " ": case "Enter": case "Play": case "Pause":
+        case " ": case "Play": case "Pause":
             togglePlay(); e.preventDefault(); break;
+        case "Enter":
+            // Kein Button fokussiert: Controls einblenden + Focus auf Play
+            if (!controlsVisible) {
+                showControls();
+                if (playBtn) playBtn.focus();
+            } else {
+                togglePlay();
+            }
+            e.preventDefault(); break;
         case "ArrowLeft": case "Rewind":
-            seekRelative(-10); e.preventDefault(); break;
+            seekRelative(-10); showControls(); e.preventDefault(); break;
         case "ArrowRight": case "FastForward":
-            seekRelative(10); e.preventDefault(); break;
+            seekRelative(10); showControls(); e.preventDefault(); break;
         case "ArrowUp":
-            if (videoEl) videoEl.volume = Math.min(1, videoEl.volume + 0.1);
+            // Erster Druck: Controls + Focus auf Buttons
-            showControls(); e.preventDefault(); break;
+            if (!controlsVisible) {
+                showControls();
+                if (playBtn) playBtn.focus();
+            } else {
+                // Controls sichtbar aber kein Button fokussiert: Focus setzen
+                if (playBtn) playBtn.focus();
+                showControls();
+            }
+            e.preventDefault(); break;
         case "ArrowDown":
-            if (videoEl) videoEl.volume = Math.max(0, videoEl.volume - 0.1);
+            if (!controlsVisible) {
-            showControls(); e.preventDefault(); break;
+                showControls();
+                if (playBtn) playBtn.focus();
+            } else {
+                if (playBtn) playBtn.focus();
+                showControls();
+            }
+            e.preventDefault(); break;
         case "Escape": case "Backspace": case "Stop":
             saveProgress();
             setTimeout(() => window.history.back(), 100);
@@ -477,6 +625,15 @@ function onKeyDown(e) {
         case "n":
             if (cfg.nextVideoId) playNextEpisode();
             e.preventDefault(); break;
+        // Samsung Farbtasten: Direkt-Zugriff auf Overlay-Sektionen
+        case "ColorRed":
+            openOverlaySection("audio"); e.preventDefault(); break;
+        case "ColorGreen":
+            openOverlaySection("subs"); e.preventDefault(); break;
+        case "ColorYellow":
+            openOverlaySection("quality"); e.preventDefault(); break;
+        case "ColorBlue":
+            openOverlaySection("speed"); e.preventDefault(); break;
     }
 }