feat: impression depuis galerie publique (quota session, modal copies)

backend/api/print_api.py

@@ -142,12 +142,96 @@ async def get_user_print_config(request: Request):
     """Retourne la config impression galerie utilisateur."""
     cfg = request.app.state.config.print
     return {
-        "user_print_enabled":   cfg.user_print_enabled,
-        "user_print_quota":     cfg.user_print_quota,
+        "user_print_enabled":    cfg.user_print_enabled,
+        "user_print_quota":      cfg.user_print_quota,
         "user_print_max_copies": cfg.user_print_max_copies,
     }
 
 
+@router.get("/print/user-print-status")
+async def get_user_print_status(request: Request):
+    """Statut d'impression de la session courante (quota restant, config active)."""
+    cfg = request.app.state.config.print
+    count = request.session.get("gallery_print_count", 0)
+    remaining = (cfg.user_print_quota - count) if cfg.user_print_quota > 0 else -1
+    return {
+        "user_print_enabled":    cfg.user_print_enabled,
+        "user_print_quota":      cfg.user_print_quota,
+        "user_print_max_copies": cfg.user_print_max_copies,
+        "session_print_count":   count,
+        "remaining_quota":       remaining,   # -1 = illimité
+    }
+
+
+@router.post("/print/request-gallery")
+async def gallery_print_request(request: Request, body: dict = Body(...)):
+    """Demande d'impression depuis la galerie publique.
+    Vérifie que l'impression est activée et que le quota session n'est pas dépassé.
+    """
+    from pathlib import Path as _Path
+
+    cfg_print = request.app.state.config.print
+
+    # ── Activation ────────────────────────────────────────────────────────────
+    if not cfg_print.user_print_enabled:
+        return JSONResponse({"error": "L'impression est désactivée"}, status_code=403)
+
+    photo_id = str(body.get("photo_id", "")).strip()
+    if not photo_id:
+        return JSONResponse({"error": "photo_id requis"}, status_code=400)
+
+    copies = max(1, min(cfg_print.user_print_max_copies, int(body.get("copies", 1))))
+
+    # ── Quota session ─────────────────────────────────────────────────────────
+    if cfg_print.user_print_quota > 0:
+        count = request.session.get("gallery_print_count", 0)
+        if count >= cfg_print.user_print_quota:
+            return JSONResponse({
+                "error": f"Quota atteint ({cfg_print.user_print_quota} impression(s) maximum par session)",
+                "quota_exceeded": True,
+            }, status_code=429)
+
+    # ── Résolution du fichier ─────────────────────────────────────────────────
+    media_dir = _Path(request.app.state.config.photobooth.media_dir)
+    candidates = sorted(media_dir.glob(f"{photo_id}*"))
+    if not candidates:
+        return JSONResponse({"error": "Photo introuvable"}, status_code=404)
+    filepath = str(candidates[0])
+
+    # ── Enqueue ───────────────────────────────────────────────────────────────
+    pb = request.app.state.photobooth_service
+    printer_svc = request.app.state.printer_service
+    ws = request.app.state.ws_manager
+    led = request.app.state.led_service
+
+    thumb_url = pb.thumbnail_url(photo_id)
+    entry = await printer_svc.add_request(filepath, thumb_url, copies)
+    await ws.broadcast({"type": "print_request", "entry": entry})
+
+    # ── Incrémenter compteur session ──────────────────────────────────────────
+    new_count = request.session.get("gallery_print_count", 0) + 1
+    request.session["gallery_print_count"] = new_count
+    remaining = (cfg_print.user_print_quota - new_count) if cfg_print.user_print_quota > 0 else -1
+
+    # ── Stats événement ───────────────────────────────────────────────────────
+    event_svc = getattr(request.app.state, "event_service", None)
+    if event_svc:
+        slug = request.app.state.config.event.slug
+        asyncio.create_task(event_svc.increment(slug, "print_requests"))
+
+    # ── LED si mode direct ────────────────────────────────────────────────────
+    if request.app.state.config.print.mode == "direct":
+        led.play("printing")
+
+    logger.info("Impression galerie: photo_id=%s copies=%d session_count=%d", photo_id, copies, new_count)
+    return {
+        "ok":              True,
+        "id":              entry["id"],
+        "mode":            request.app.state.config.print.mode,
+        "remaining_quota": remaining,
+    }
+
+
 # ── Gestion avancée des imprimantes CUPS ──────────────────────────────────────
 
 @router.post("/print/printers/{printer_name}/enable")