Lagerort-QR + Zuordnen per Scan

Web: druckbare QR-Etiketten fuer Lagerorte (Locations-Seite) und Route /l/<id>
(zeigt den Ort im Browser). Geteilter QR-Helfer (web/src/qr.jsx).

iOS: neuer Ablauf "Ort zuordnen" - erst Einzelstueck-QR (…/i/<UID>) scannen, dann
Lagerort-QR (…/l/<ID>); das Stueck wird dem Ort zugewiesen, danach gleich das
naechste. Plus die zuvor gebaute "Nachschlagen"-Kachel.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

ios/Sources/AssignScanView.swift

@@ -0,0 +1,90 @@
+import SwiftUI
+
+/// Zuordnen per Scan: erst ein Einzelstück (…/i/<UID>) scannen, dann einen
+/// Lagerort (…/l/<ID>) – das Stück wird dem Ort zugewiesen. Danach gleich das
+/// nächste Stück, ohne Tippen.
+struct AssignScanView: View {
+    @Environment(\.dismiss) private var dismiss
+
+    @State private var paused = false
+    @State private var torchOn = false
+    @State private var pending: Item?          // gescanntes Stück, wartet auf Ort
+    @State private var status: String?
+    @State private var error: String?
+
+    var body: some View {
+        ScrollView {
+            VStack(spacing: 14) {
+                ScannerView(onCode: { code in Task { await handle(code) } },
+                            isPaused: $paused, torchOn: $torchOn)
+                    .aspectRatio(4.0 / 3.0, contentMode: .fit)
+                    .clipShape(RoundedRectangle(cornerRadius: 16))
+                    .padding(.horizontal)
+
+                if let pending {
+                    VStack(spacing: 4) {
+                        Text("Einzelstück \(pending.uid)").font(.headline)
+                        Text("Jetzt den Lagerort-QR scannen")
+                            .font(.caption).foregroundStyle(.secondary)
+                        Button("Abbrechen") { self.pending = nil }
+                            .font(.caption).padding(.top, 2)
+                    }
+                    .padding().frame(maxWidth: .infinity)
+                    .background(Color.accentColor.opacity(0.15))
+                    .clipShape(RoundedRectangle(cornerRadius: 12)).padding(.horizontal)
+                } else {
+                    Text("Schritt 1: Einzelstück-QR scannen")
+                        .font(.caption).foregroundStyle(.secondary)
+                }
+
+                if let status {
+                    Text(status).font(.callout).foregroundStyle(.green)
+                        .frame(maxWidth: .infinity, alignment: .leading).padding(.horizontal)
+                }
+                if let error {
+                    Text(error).font(.callout).foregroundStyle(.red)
+                        .frame(maxWidth: .infinity, alignment: .leading).padding(.horizontal)
+                }
+            }
+            .padding(.vertical)
+        }
+        .navigationTitle("Ort zuordnen")
+        .navigationBarTitleDisplayMode(.inline)
+        .toolbar {
+            ToolbarItem(placement: .topBarLeading) { Button("Fertig") { dismiss() } }
+            ToolbarItem(placement: .topBarTrailing) { TorchButton(isOn: $torchOn) }
+        }
+    }
+
+    private func handle(_ code: String) async {
+        // Lagerort-QR (…/l/<ID>)?
+        if let r = code.range(of: "/l/") {
+            let idStr = String(code[r.upperBound...])
+                .trimmingCharacters(in: CharacterSet(charactersIn: "/ "))
+            if let locId = Int(idStr) {
+                guard let it = pending else {
+                    error = "Erst ein Einzelstück scannen."; status = nil; return
+                }
+                do {
+                    _ = try await APIClient.shared.updateItem(id: it.id, ItemUpdateRequest(
+                        locationId: locId, shopId: it.shopId,
+                        acquiredOn: it.acquiredOn, warrantyUntil: it.warrantyUntil, note: it.note))
+                    status = "\(it.uid) zugeordnet. Nächstes Stück scannen."
+                    error = nil
+                    pending = nil
+                } catch { self.error = error.localizedDescription }
+                return
+            }
+        }
+        // Einzelstück-QR (…/i/<UID>)?
+        if let r = code.range(of: "/i/") {
+            let uid = String(code[r.upperBound...])
+                .trimmingCharacters(in: CharacterSet(charactersIn: "/ ")).uppercased()
+            if !uid.isEmpty, let it = try? await APIClient.shared.itemByUid(uid: uid) {
+                pending = it; status = nil; error = nil
+                return
+            }
+        }
+        error = "Unbekannter Code – bitte einen Einzelstück- oder Lagerort-QR scannen."
+    }
+}

ios/Sources/RootView.swift

@@ -30,6 +30,7 @@ struct RootView: View {
                 case .checkin: CheckInView()
                 case .checkout: CheckOutView()
                 case .lookup: LookupScanView()
+                case .assign: AssignScanView()
                 case .expiring:
                     ExpiringView()
                         .toolbar {
@@ -111,6 +112,13 @@ struct ScanTabView: View {
                                    subtitle: "Ohne Barcode – Name, Kategorie, eigene Felder",
                                    systemImage: "plus")
                     }
+                    Button {
+                        router.route = .assign
+                    } label: {
+                        ActionTile(title: "Ort zuordnen",
+                                   subtitle: "Einzelstück-QR scannen, dann Lagerort-QR",
+                                   systemImage: "mappin.and.ellipse")
+                    }
                 }
                 Spacer()
             }

ios/Sources/VorraniaApp.swift

@@ -10,6 +10,7 @@ enum Route: String {
     case checkout
     case expiring
     case lookup
+    case assign
 }
 
 final class Router: ObservableObject {

ios/Vorrania.xcodeproj/project.pbxproj

@@ -19,6 +19,7 @@
 		4C486D190D1AB338925D29B5 /* HistoryView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7DACFBB69CB536BA7CBBD484 /* HistoryView.swift */; };
 		4F86620DF8303DB02314DB5A /* CheckInView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0365A16FEAE3F2BEC321E68A /* CheckInView.swift */; };
 		56A5DFAC86DF972B1481A691 /* ItemViews.swift in Sources */ = {isa = PBXBuildFile; fileRef = 69B59B9F69BC30451D45A3C7 /* ItemViews.swift */; };
+		5A0C3254B45CA13B1C3D9265 /* AssignScanView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 76393ADA26304E5BC5AD7E7F /* AssignScanView.swift */; };
 		6816C33381DF52A96E5BB303 /* Models.swift in Sources */ = {isa = PBXBuildFile; fileRef = 314B1BB7220691A7423E8929 /* Models.swift */; };
 		728CF5124D2D5BBF826BCD2C /* ServerFetch.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1847E65D41ACEDD01CD108BC /* ServerFetch.swift */; };
 		75F805F8AE93479933BD811D /* VorraniaApp.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9948219CDDC4188EA4298F22 /* VorraniaApp.swift */; };
@@ -64,6 +65,7 @@
 		69B59B9F69BC30451D45A3C7 /* ItemViews.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ItemViews.swift; sourceTree = "<group>"; };
 		6F574168AA0F849D46C384EE /* ProductDetailView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ProductDetailView.swift; sourceTree = "<group>"; };
 		717C8EB336170526F5F3E695 /* DateScanView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DateScanView.swift; sourceTree = "<group>"; };
+		76393ADA26304E5BC5AD7E7F /* AssignScanView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AssignScanView.swift; sourceTree = "<group>"; };
 		7B5BB49FBEFF88768B0BC902 /* ObjectStockView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ObjectStockView.swift; sourceTree = "<group>"; };
 		7DACFBB69CB536BA7CBBD484 /* HistoryView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HistoryView.swift; sourceTree = "<group>"; };
 		8AF19A735AC17451B57BF5BB /* ScannerView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ScannerView.swift; sourceTree = "<group>"; };
@@ -89,6 +91,7 @@
 			children = (
 				378F1B2DE567B62169E84426 /* APIClient.swift */,
 				660ACEFA22BC77D52FBE736A /* AppDashboards.swift */,
+				76393ADA26304E5BC5AD7E7F /* AssignScanView.swift */,
 				AA022A27118BEEEC5912ECDC /* BestBeforeText.swift */,
 				CDD672F65352DA0D122EC9AE /* CategoryPicker.swift */,
 				E580BA2815BB8F6341D64B47 /* ChartCards.swift */,
@@ -215,6 +218,7 @@
 			files = (
 				39F1F17DCB4E491652D08DEE /* APIClient.swift in Sources */,
 				F3F718BFC60BF945CFA32BD2 /* AppDashboards.swift in Sources */,
+				5A0C3254B45CA13B1C3D9265 /* AssignScanView.swift in Sources */,
 				A7017E6C0532A650439AED7B /* BestBeforeText.swift in Sources */,
 				25FC3913EFFA37D013328FDE /* CategoryPicker.swift in Sources */,
 				FFD4DB783F89083C9098F1C4 /* ChartCards.swift in Sources */,

web/src/App.jsx

@@ -14,6 +14,7 @@ import Groups from "./pages/Groups";
 import Categories from "./pages/Categories";
 import Shops from "./pages/Shops";
 import ItemResolve from "./pages/ItemResolve";
+import LocationResolve from "./pages/LocationResolve";
 import Locations from "./pages/Locations";
 import PackageTypes from "./pages/PackageTypes";
 import Units from "./pages/Units";
@@ -136,6 +137,7 @@ export default function App() {
       <Route path="/products/new" element={<Protected adminOnly><ProductForm /></Protected>} />
       <Route path="/products/:id" element={<Protected><ProductForm /></Protected>} />
       <Route path="/i/:uid" element={<Protected><ItemResolve /></Protected>} />
+      <Route path="/l/:id" element={<Protected><LocationResolve /></Protected>} />
       <Route path="/groups" element={<Protected><Groups /></Protected>} />
       <Route path="/categories" element={<Protected><Categories /></Protected>} />
       <Route path="/shopping" element={<Protected><ShoppingList /></Protected>} />

web/src/pages/LocationResolve.jsx

@@ -0,0 +1,38 @@
+import { useEffect, useState } from "react";
+import { useParams } from "react-router-dom";
+import { api } from "../api";
+import Icon from "../components/Icon";
+
+/**
+ * Ziel eines gescannten Lagerort-QR (/l/<id>). Im Browser zeigt es nur den
+ * Namen; das eigentliche Zuordnen (Stück → Ort) läuft über die App.
+ */
+export default function LocationResolve() {
+  const { id } = useParams();
+  const [name, setName] = useState(null);
+  const [error, setError] = useState(null);
+
+  useEffect(() => {
+    api.listLocations()
+      .then((ls) => {
+        const l = ls.find((x) => String(x.id) === String(id));
+        if (l) setName(l.name);
+        else setError("Lagerort nicht gefunden.");
+      })
+      .catch((e) => setError(e.message));
+  }, [id]);
+
+  return (
+    <div>
+      <div className="page-head">
+        <div>
+          <h1>Lagerort {name || `#${id}`}</h1>
+          <div className="sub">
+            {error || "Diesen QR-Code in der App scannen (Ort zuordnen), um Einzelstücke hier einzuordnen."}
+          </div>
+        </div>
+      </div>
+      {error && <div className="alert error"><Icon name="alert" size={16} />{error}</div>}
+    </div>
+  );
+}

web/src/pages/Locations.jsx

@@ -2,6 +2,7 @@ import { useEffect, useState } from "react";
 import { api } from "../api";
 import { useConfirm } from "../confirm";
 import Icon from "../components/Icon";
+import { QrImg, printQrLabels } from "../qr";
 
 export default function Locations() {
   const confirm = useConfirm();
@@ -71,6 +72,12 @@ export default function Locations() {
           <h1>Lagerorte</h1>
           <div className="sub">Orte lassen sich verschachteln (z.B. Keller → Regal 2 → Fach A)</div>
         </div>
+        {locations.length > 0 && (
+          <button className="btn" onClick={() => printQrLabels("Lagerort-Etiketten",
+            locations.map((l) => ({ text: `${window.location.origin}/l/${l.id}`, line1: l.name, line2: "Lagerort" })))}>
+            <Icon name="download" size={16} />QR-Etiketten drucken
+          </button>
+        )}
       </div>
       {error && <div className="alert error"><Icon name="alert" size={16} />{error}</div>}
 
@@ -108,9 +115,12 @@ export default function Locations() {
                   <span className="badge">in {nameById[l.parent_id]}</span>
                 )}
               </span>
+              <span style={{ display: "flex", alignItems: "center", gap: 8 }}>
+                <QrImg text={`${window.location.origin}/l/${l.id}`} size={44} />
                 <button className="btn-icon danger" onClick={() => remove(l.id)} title="Löschen">
                   <Icon name="trash" size={16} />
                 </button>
+              </span>
             </li>
           ))}
           {locations.length === 0 && <li className="empty">Noch keine Lagerorte.</li>}

web/src/qr.jsx

@@ -0,0 +1,42 @@
+import { useEffect, useState } from "react";
+import QRCode from "qrcode";
+
+/** Kleines QR-Bild für einen Wert (asynchron erzeugt). */
+export function QrImg({ text, size = 60 }) {
+  const [url, setUrl] = useState(null);
+  useEffect(() => {
+    let ok = true;
+    QRCode.toDataURL(text, { margin: 1, width: size * 2 })
+      .then((u) => { if (ok) setUrl(u); })
+      .catch(() => {});
+    return () => { ok = false; };
+  }, [text, size]);
+  return url
+    ? <img src={url} width={size} height={size} alt="QR" style={{ display: "block" }} />
+    : <span style={{ display: "inline-block", width: size, height: size }} />;
+}
+
+const esc = (s) => (s || "").replace(/[<>&]/g, "");
+
+/** Druckt QR-Etiketten in einem neuen Fenster. entries: [{ text, line1, line2 }]. */
+export async function printQrLabels(title, entries) {
+  const labels = await Promise.all(entries.map(async (e) => {
+    const url = await QRCode.toDataURL(e.text, { margin: 1, width: 260 });
+    return `<div class="label"><img src="${url}"/><div class="l1">${esc(e.line1)}</div>`
+      + `<div class="l2">${esc(e.line2)}</div></div>`;
+  }));
+  const w = window.open("", "_blank");
+  if (!w) return false;
+  w.document.write(
+    `<!doctype html><html><head><meta charset="utf-8"><title>${esc(title)}</title><style>
+      body{font-family:sans-serif;margin:8mm;display:flex;flex-wrap:wrap;gap:6mm}
+      .label{width:34mm;text-align:center;border:1px solid #ccc;border-radius:3mm;padding:3mm;page-break-inside:avoid}
+      .label img{width:28mm;height:28mm}
+      .l1{font-weight:700;font-size:10pt;margin-top:1mm}
+      .l2{font-size:8pt;color:#444}
+    </style></head><body>${labels.join("")}
+    <script>window.onload=function(){window.print()}</script></body></html>`,
+  );
+  w.document.close();
+  return true;
+}