// Lane L7 „Offline & PWA" — reine Outbox-/Bundle-Logik ohne IndexedDB und ohne Server:
// Reihenfolge je Auftrag, Retry/Backoff, idMap-Anwendung, Blob-Upload vor der Op, Konflikt stoppt
// keine unabhängigen Ops, verkettete baseVersion, Mandanten-/User-Trennung der lokalen Stores,
// optimistische Auftragsansicht, Vorab-Download-Auswahl, Dokument-Cache (LRU), Service-Worker-Regeln.
//
// Lauf: npx tsx scripts/test-offline-core.ts (keine Infrastruktur nötig)

import { readFileSync } from "node:fs";
import { randomUUID } from "node:crypto";
import type { SyncOperationInput, SyncOpResult } from "../src/lib/sync/envelope";
import { createMemoryStore } from "../src/lib/offline/memory-store";
import {
  applyIdMapToPayload,
  applyResults,
  backoffMs,
  BACKOFF_MAX_MS,
  blobRef,
  canDiscard,
  createEntry,
  MAX_BATCH,
  problemKey,
  prunable,
  retryEntry,
  selectBatch,
  summarize,
} from "../src/lib/offline/outbox-core";
import { enqueueBlob, enqueueOp, runSyncPass, type Transport } from "../src/lib/offline/sync-engine";
import { buildOrderView, isBundleStale, parseMaxDays, selectOfflineOrders, toBundleRecords } from "../src/lib/offline/bundle-core";
import { DOC_CACHE, DOC_CACHE_MAX_BYTES, PAGE_CACHE, selectEvictions, selectOfflineDocuments } from "../src/lib/offline/doc-cache";
import { ctxKeyOf, type BundleOrderData, type OutboxEntry } from "../src/lib/offline/types";

let failures = 0;
const ok = (cond: boolean, msg: string) => {
  console.log(`${cond ? "✓" : "✗ FEHLER"} ${msg}`);
  if (!cond) failures++;
};

const A = { tenantId: "tenant-a", userId: "user-1" };
const A2 = { tenantId: "tenant-a", userId: "user-2" };
const B = { tenantId: "tenant-b", userId: "user-1" };
const T0 = new Date("2026-09-14T08:00:00.000Z");
const at = (ms: number) => new Date(T0.getTime() + ms);
const fixedRandom = () => 1; // backoff = full step

/** Fake server: records every batch, answers per op via `decide`. */
function fakeTransport(decide: (op: SyncOperationInput) => SyncOpResult, opts: { failBatches?: number; uploadError?: "network" | "invalid" | "suspended" } = {}) {
  const batches: SyncOperationInput[][] = [];
  const uploads: string[] = [];
  const log: string[] = [];
  let failBatches = opts.failBatches ?? 0;
  const transport: Transport = {
    async sendBatch(_device, operations) {
      if (failBatches > 0) {
        failBatches--;
        log.push("batch:network");
        return { ok: false, error: "network" };
      }
      batches.push(operations);
      log.push(...operations.map((o) => `op:${o.opType}`));
      return { ok: true, response: { results: operations.map(decide), serverTime: new Date().toISOString() } };
    },
    async upload(blob) {
      log.push(`upload:${blob.clientId}`);
      if (opts.uploadError) return { ok: false, error: opts.uploadError };
      uploads.push(blob.clientId);
      return { ok: true, documentId: `doc-${blob.clientId.slice(0, 8)}` };
    },
  };
  return { transport, batches, uploads, log };
}

const applied = (op: SyncOperationInput, extra: Partial<SyncOpResult> = {}): SyncOpResult => ({ clientOpId: op.clientOpId, status: "applied", ...extra });

function order(id: string, extra: Partial<BundleOrderData> = {}): BundleOrderData {
  return {
    id,
    number: `A-${id}`,
    title: `Auftrag ${id}`,
    status: "assigned",
    statusGroup: "planned",
    priority: "normal",
    isEmergency: false,
    plannedStart: null,
    plannedEnd: null,
    version: 3,
    customer: { companyName: "Kunde", firstName: null, lastName: null, street: null, houseNumber: null, postalCode: null, city: null },
    checklistItems: [{ id: "chk-1", label: "Absichern", required: true, requiresPhoto: false, checked: false, checkedAt: null, comment: null }],
    photoRequirements: [{ id: "req-1", key: "typ", label: "Typenschild", _count: { photos: 0 } }],
    materialPlans: [],
    materialUsages: [],
    documents: [],
    siteHistory: [],
    ...extra,
  };
}

async function main() {
  console.log("\n— Reihenfolge je Auftrag / Batch —");
  {
    const store = createMemoryStore();
    const ids: string[] = [];
    for (let i = 0; i < 3; i++) {
      const e = await enqueueOp(store, A, { opType: "note.create", payload: { workOrderId: "wo-1", clientId: randomUUID(), kind: "general", text: `n${i}` } }, randomUUID(), at(i));
      ids.push(e.clientOpId);
    }
    await enqueueOp(store, A, { opType: "note.create", payload: { workOrderId: "wo-2", clientId: randomUUID(), kind: "general", text: "x" } }, randomUUID(), at(10));
    const fake = fakeTransport((op) => applied(op));
    const pass = await runSyncPass({ store, ctx: A, transport: fake.transport, deviceId: "d", now: () => at(100) });
    const sentIds = fake.batches.flat().map((o) => o.clientOpId);
    ok(pass.applied === 4 && fake.batches.length === 1, "4 Ops in einem Batch übertragen und angewendet");
    ok(JSON.stringify(sentIds.slice(0, 3)) === JSON.stringify(ids), "Ops eines Auftrags in Erfassungsreihenfolge gesendet");
    ok((await store.listOps(ctxKeyOf(A))).every((o) => o.status === "applied" && !!o.appliedAt), "lokaler Status applied mit Zeitstempel");
  }
  {
    const ops: OutboxEntry[] = [];
    for (let i = 0; i < 120; i++) ops.push(createEntry(A, { opType: "note.create", payload: { workOrderId: `wo-${i % 7}`, kind: "general", text: "t" } }, { clientOpId: randomUUID(), now: at(i), existing: [], seq: i }));
    const b = selectBatch(ops, [], at(1000));
    ok(b.entries.length === MAX_BATCH && b.operations.length === MAX_BATCH, `Batch auf ${MAX_BATCH} Ops begrenzt`);
    const store = createMemoryStore();
    for (const o of ops) await store.putOp(o);
    const fake = fakeTransport((op) => applied(op));
    const pass = await runSyncPass({ store, ctx: A, transport: fake.transport, deviceId: "d", now: () => at(2000) });
    ok(pass.applied === 120 && fake.batches.length === 3 && fake.batches.every((x) => x.length <= MAX_BATCH), "120 Ops → 3 Batches (50/50/20)");
  }

  console.log("\n— Retry / Backoff —");
  {
    ok(backoffMs(1, fixedRandom) === 2000 && backoffMs(2, fixedRandom) === 4000 && backoffMs(4, fixedRandom) === 16000, "Backoff verdoppelt sich (2 s, 4 s, 16 s)");
    ok(backoffMs(30, fixedRandom) === BACKOFF_MAX_MS, "Backoff gedeckelt auf 5 min");
    ok(backoffMs(3, () => 0) === 4000, "Jitter halbiert höchstens");

    const store = createMemoryStore();
    const e1 = await enqueueOp(store, A, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "a" } }, randomUUID(), at(0));
    const e2 = await enqueueOp(store, A, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "b" } }, randomUUID(), at(1));
    const fake = fakeTransport((op) => applied(op), { failBatches: 1 });
    const p1 = await runSyncPass({ store, ctx: A, transport: fake.transport, deviceId: "d", now: () => at(10), random: fixedRandom });
    let ops = await store.listOps(ctxKeyOf(A));
    ok(p1.stopped === "network" && ops.every((o) => o.status === "queued" && o.attempts === 1 && o.lastError?.code === "network"), "Netzfehler → zurück in die Warteschlange, Versuch gezählt, Fehler gespeichert");
    ok(ops.every((o) => o.nextAttemptAt === at(10 + 2000).toISOString()), "nächster Versuch nach Backoff terminiert");
    const p2 = await runSyncPass({ store, ctx: A, transport: fake.transport, deviceId: "d", now: () => at(500), random: fixedRandom });
    ok(p2.sent === 0 && fake.batches.length === 0, "während Backoff wird nicht gesendet");
    const p3 = await runSyncPass({ store, ctx: A, transport: fake.transport, deviceId: "d", now: () => at(3000), random: fixedRandom });
    ops = await store.listOps(ctxKeyOf(A));
    ok(p3.applied === 2 && ops.every((o) => o.status === "applied"), "nach Backoff erfolgreich übertragen");
    ok(fake.batches[0].map((o) => o.clientOpId).join() === [e1.clientOpId, e2.clientOpId].join(), "gleiche clientOpIds beim Wiederholen (Idempotenz)");

    // server-side transient error per op
    const store2 = createMemoryStore();
    await enqueueOp(store2, A, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "a" } }, randomUUID(), at(0));
    const fake2 = fakeTransport((op) => ({ clientOpId: op.clientOpId, status: "rejected", errorCode: "internal" }));
    await runSyncPass({ store: store2, ctx: A, transport: fake2.transport, deviceId: "d", now: () => at(10), random: fixedRandom });
    const [t] = await store2.listOps(ctxKeyOf(A));
    ok(t.status === "queued" && t.attempts === 1 && !!t.nextAttemptAt, "rejected internal → transient, erneuter Versuch geplant");
    const store3 = createMemoryStore();
    await enqueueOp(store3, A, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "a" } }, randomUUID(), at(0));
    const fake3 = fakeTransport((op) => ({ clientOpId: op.clientOpId, status: "rejected", errorCode: "not_found" }));
    await runSyncPass({ store: store3, ctx: A, transport: fake3.transport, deviceId: "d", now: () => at(10) });
    const [r] = await store3.listOps(ctxKeyOf(A));
    ok(r.status === "rejected" && r.lastError?.code === "not_found" && canDiscard(r) && problemKey(r) === "notFound", "rejected not_found → endgültig, verwerfbar, Klartext-Schlüssel");
    const retried = retryEntry(r, at(20), "new-op-id");
    ok(retried?.status === "queued" && retried.clientOpId === "new-op-id" && retried.attempts === 0, "erneut versuchen: neue clientOpId (Server hat altes Ergebnis gespeichert)");
    const unauthorized = fakeTransport((op) => applied(op));
    unauthorized.transport.sendBatch = async () => ({ ok: false, error: "unauthorized" });
    const store4 = createMemoryStore();
    await enqueueOp(store4, A, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "a" } }, randomUUID(), at(0));
    const p4 = await runSyncPass({ store: store4, ctx: A, transport: unauthorized.transport, deviceId: "d", now: () => at(10) });
    ok(p4.stopped === "unauthorized" && summarize(await store4.listOps(ctxKeyOf(A)), []).waitingForAuth, "401 → Pass stoppt, Hinweis „neu anmelden“");
  }

  console.log("\n— Konflikt stoppt keine unabhängigen Ops —");
  {
    const store = createMemoryStore();
    const tr = await enqueueOp(store, A, { opType: "work_order.transition", baseVersion: 3, payload: { workOrderId: "wo-1", to: "accepted" } }, randomUUID(), at(0));
    const sameOrderNote = await enqueueOp(store, A, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "danach" } }, randomUUID(), at(1));
    const other = await enqueueOp(store, A, { opType: "checklist.toggle", payload: { workOrderId: "wo-2", itemId: "c", checked: true } }, randomUUID(), at(2));
    const fake = fakeTransport((op) => (op.opType === "work_order.transition" ? { clientOpId: op.clientOpId, status: "conflict", errorCode: "conflict", entityVersion: 5 } : applied(op)));
    const pass = await runSyncPass({ store, ctx: A, transport: fake.transport, deviceId: "d", now: () => at(10) });
    const byId = new Map((await store.listOps(ctxKeyOf(A))).map((o) => [o.clientOpId, o]));
    ok(pass.conflicts === 1 && byId.get(tr.clientOpId)?.status === "conflict", "Statusänderung → conflict (nicht überschrieben)");
    ok(byId.get(sameOrderNote.clientOpId)?.status === "applied" && byId.get(other.clientOpId)?.status === "applied", "additive Op desselben Auftrags und Op eines anderen Auftrags trotzdem angewendet");
    ok(problemKey(byId.get(tr.clientOpId)!) === "conflictTransition" && !canDiscard(byId.get(tr.clientOpId)!), "Konflikt: Klartext „im Büro geändert“, nicht verwerfbar");
    ok(summarize([...byId.values()], []).conflicts === 1, "Konflikt in der Zusammenfassung gezählt");
    // duplicate of a stored conflict stays a conflict
    const dupStore = createMemoryStore();
    await enqueueOp(dupStore, A, { opType: "work_order.transition", baseVersion: 3, payload: { workOrderId: "wo-1", to: "accepted" } }, randomUUID(), at(0));
    const dup = fakeTransport((op) => ({ clientOpId: op.clientOpId, status: "duplicate", errorCode: "conflict", message: "original status: conflict" }));
    await runSyncPass({ store: dupStore, ctx: A, transport: dup.transport, deviceId: "d", now: () => at(10) });
    ok((await dupStore.listOps(ctxKeyOf(A)))[0].status === "conflict", "duplicate eines gespeicherten Konflikts bleibt conflict");
  }
  {
    // pending op (backoff) blocks only later ops of the same order
    const e1 = createEntry(A, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "a" } }, { clientOpId: "a1", now: T0, existing: [], seq: 1 });
    const e2 = createEntry(A, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "b" } }, { clientOpId: "a2", now: T0, existing: [], seq: 2 });
    const e3 = createEntry(A, { opType: "note.create", payload: { workOrderId: "wo-2", kind: "general", text: "c" } }, { clientOpId: "b1", now: T0, existing: [], seq: 3 });
    const b = selectBatch([{ ...e1, nextAttemptAt: at(60_000).toISOString(), attempts: 1 }, e2, e3], [], at(1000));
    ok(b.entries.map((e) => e.clientOpId).join() === "b1", "Op im Backoff blockiert nur Folge-Ops desselben Auftrags");
  }

  console.log("\n— Blob-Upload vor der Op —");
  {
    const store = createMemoryStore();
    const clientId = randomUUID();
    const ref = await enqueueBlob(store, A, { clientId, workOrderId: "wo-1", kind: "photo", blob: new Blob([new Uint8Array(1024)], { type: "image/jpeg" }), fileName: "f.jpg" }, at(0));
    ok(ref === blobRef(clientId), "Blob-Referenz blob:<clientId>");
    const op = await enqueueOp(store, A, { opType: "photo.attach", payload: { workOrderId: "wo-1", clientId: randomUUID(), documentId: ref, phase: "during" } }, randomUUID(), at(1));
    ok(op.blobRefs.length === 1 && (await store.getBlob(clientId))?.opClientOpId === op.clientOpId, "Op mit Blob verknüpft");
    ok(selectBatch(await store.listOps(ctxKeyOf(A)), await store.listBlobs(ctxKeyOf(A)), at(2)).entries.length === 0, "ohne Upload wird die Op nicht gesendet");
    ok(summarize(await store.listOps(ctxKeyOf(A)), await store.listBlobs(ctxKeyOf(A))).pendingUploads === 1, "ausstehender Upload gezählt");
    const fake = fakeTransport((o) => applied(o));
    const pass = await runSyncPass({ store, ctx: A, transport: fake.transport, deviceId: "d", now: () => at(10) });
    ok(fake.log.indexOf(`upload:${clientId}`) === 0 && fake.log.indexOf("op:photo.attach") === 1, "Upload vor photo.attach");
    ok(fake.batches[0][0].payload.documentId === `doc-${clientId.slice(0, 8)}`, "Payload auf Server-documentId umgeschrieben");
    ok(pass.applied === 1 && (await store.getBlob(clientId)) === null, "nach applied: Blob lokal freigegeben");

    const store2 = createMemoryStore();
    const c2 = randomUUID();
    const ref2 = await enqueueBlob(store2, A, { clientId: c2, workOrderId: "wo-1", kind: "photo", blob: new Blob(["x"]), fileName: "f.jpg" }, at(0));
    await enqueueOp(store2, A, { opType: "photo.attach", payload: { workOrderId: "wo-1", documentId: ref2 } }, randomUUID(), at(1));
    const note = await enqueueOp(store2, A, { opType: "note.create", payload: { workOrderId: "wo-9", kind: "general", text: "unabhängig" } }, randomUUID(), at(2));
    const bad = fakeTransport((o) => applied(o), { uploadError: "invalid" });
    await runSyncPass({ store: store2, ctx: A, transport: bad.transport, deviceId: "d", now: () => at(10) });
    const ops2 = await store2.listOps(ctxKeyOf(A));
    const photoOp = ops2.find((o) => o.opType === "photo.attach")!;
    ok(photoOp.status === "rejected" && problemKey(photoOp) === "upload", "Upload endgültig abgelehnt → Op rejected mit Klartext");
    ok(ops2.find((o) => o.clientOpId === note.clientOpId)?.status === "applied", "unabhängige Op trotzdem gesendet");
    const store3 = createMemoryStore();
    const c3 = randomUUID();
    await enqueueOp(store3, A, { opType: "photo.attach", payload: { workOrderId: "wo-1", documentId: await enqueueBlob(store3, A, { clientId: c3, workOrderId: "wo-1", kind: "photo", blob: new Blob(["x"]), fileName: "f" }, at(0)) } }, randomUUID(), at(1));
    const offline = fakeTransport((o) => applied(o), { uploadError: "network" });
    const p = await runSyncPass({ store: store3, ctx: A, transport: offline.transport, deviceId: "d", now: () => at(10), random: fixedRandom });
    const blob3 = await store3.getBlob(c3);
    ok(p.stopped === "network" && blob3?.status === "failed" && blob3.nextAttemptAt === at(2010).toISOString() && offline.batches.length === 0, "Upload ohne Netz → Backoff, Op wartet");

    // L15: expired trial (read-only tenant) must not discard photos
    const store5 = createMemoryStore();
    const c5 = randomUUID();
    const op5 = await enqueueOp(store5, A, { opType: "photo.attach", payload: { workOrderId: "wo-1", documentId: await enqueueBlob(store5, A, { clientId: c5, workOrderId: "wo-1", kind: "photo", blob: new Blob(["x"]), fileName: "f" }, at(0)) } }, randomUUID(), at(1));
    const suspended = fakeTransport((o) => applied(o), { uploadError: "suspended" });
    const p5 = await runSyncPass({ store: store5, ctx: A, transport: suspended.transport, deviceId: "d", now: () => at(10), random: fixedRandom });
    const blob5 = await store5.getBlob(c5);
    const op5After = (await store5.listOps(ctxKeyOf(A))).find((o) => o.clientOpId === op5.clientOpId);
    ok(p5.stopped === "suspended" && p5.rejected === 0 && suspended.batches.length === 0, "Testphase abgelaufen → Pass stoppt, nichts verworfen");
    ok(!!blob5 && blob5.nextAttemptAt !== null && blob5.lastError?.message === "trial_expired" && op5After?.status === "queued", "Foto bleibt auf dem Gerät, Op wartet (Backoff)");
  }

  console.log("\n— idMap / verkettete baseVersion —");
  {
    ok(
      JSON.stringify(applyIdMapToPayload({ clientId: "c1", photoId: "c1", nested: { ref: "c1" }, list: ["c1", "x"] }, { c1: "srv-1" })) ===
        JSON.stringify({ clientId: "c1", photoId: "srv-1", nested: { ref: "srv-1" }, list: ["srv-1", "x"] }),
      "idMap ersetzt Referenzen, eigenes clientId-Feld bleibt",
    );
    const store = createMemoryStore();
    const photoClient = randomUUID();
    const first = await enqueueOp(store, A, { opType: "photo.attach", payload: { workOrderId: "wo-1", clientId: photoClient, documentId: "doc-1" } }, randomUUID(), at(0));
    const second = await enqueueOp(store, A, { opType: "material.upsert", payload: { workOrderId: "wo-1", clientId: randomUUID(), name: "Rohr", quantity: 1, unit: "m", usageStatus: "additional", photoId: photoClient } }, randomUUID(), at(1));
    const ops = await store.listOps(ctxKeyOf(A));
    const { changed, idMap } = applyResults(ops, [ops[0]], [{ clientOpId: first.clientOpId, status: "applied", idMap: { [photoClient]: "photo-srv" } }], at(5));
    const rewritten = changed.find((c) => c.clientOpId === second.clientOpId);
    ok(idMap[photoClient] === "photo-srv" && rewritten?.payload.photoId === "photo-srv", "idMap auf wartende Ops angewendet (client id → server id)");

    const chain = createMemoryStore();
    const start = await enqueueOp(chain, A, { opType: "session.start", payload: { workOrderId: "wo-1", mode: "work", clientId: randomUUID() } }, randomUUID(), at(0));
    const complete = await enqueueOp(chain, A, { opType: "work_order.transition", baseVersion: 3, payload: { workOrderId: "wo-1", to: "technically_completed" } }, randomUUID(), at(1));
    ok(complete.chainedBase === true, "Statuswechsel hinter eigener Session-Op → baseVersion verkettet");
    const fake = fakeTransport((op) => (op.opType === "session.start" ? applied(op, { entityVersion: 5 }) : op.baseVersion === 5 ? applied(op, { entityVersion: 6 }) : { clientOpId: op.clientOpId, status: "conflict", errorCode: "conflict" }));
    await runSyncPass({ store: chain, ctx: A, transport: fake.transport, deviceId: "d", now: () => at(10), maxBatch: 1 });
    const chained = (await chain.listOps(ctxKeyOf(A))).find((o) => o.clientOpId === complete.clientOpId);
    ok(fake.batches.length === 2 && fake.batches[1][0].baseVersion === 5 && chained?.status === "applied", "baseVersion aus Server-Ergebnis der Vorgänger-Op übernommen");
    ok(start.chainedBase === undefined, "additive/Session-Op ohne Verkettung");
  }

  console.log("\n— Mandanten-/User-Trennung der lokalen Stores —");
  {
    const store = createMemoryStore();
    await enqueueOp(store, A, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "A" } }, randomUUID(), at(0));
    await enqueueOp(store, B, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "B" } }, randomUUID(), at(1));
    await enqueueOp(store, A2, { opType: "note.create", payload: { workOrderId: "wo-1", kind: "general", text: "A2" } }, randomUUID(), at(2));
    await enqueueBlob(store, B, { clientId: randomUUID(), workOrderId: "wo-1", kind: "photo", blob: new Blob(["b"]), fileName: "b" }, at(3));
    await store.replaceBundle(ctxKeyOf(A), toBundleRecords(ctxKeyOf(A), [order("wo-1")], at(0).toISOString()));
    await store.replaceBundle(ctxKeyOf(B), toBundleRecords(ctxKeyOf(B), [order("wo-b")], at(0).toISOString()));
    await store.setMeta(ctxKeyOf(A), "draft:note:wo-1", { text: "geheim A" });
    const opsA = await store.listOps(ctxKeyOf(A));
    ok(opsA.length === 1 && opsA[0].payload.text === "A" && opsA[0].tenantId === "tenant-a" && opsA[0].userId === "user-1", "Outbox liefert nur Ops des eigenen Mandanten+Users");
    ok((await store.listOps(ctxKeyOf(A2))).length === 1 && (await store.listOps(ctxKeyOf(B)))[0].payload.text === "B", "anderer User desselben Mandanten / anderer Mandant getrennt");
    ok((await store.listBlobs(ctxKeyOf(A))).length === 0 && (await store.listBlobs(ctxKeyOf(B))).length === 1, "Blobs je Kontext getrennt");
    ok((await store.listBundle(ctxKeyOf(B))).map((r) => r.workOrderId).join() === "wo-b", "Bundle je Kontext getrennt");
    ok((await store.getMeta(ctxKeyOf(B), "draft:note:wo-1")) === null, "Entwürfe je Kontext getrennt");
    await store.replaceBundle(ctxKeyOf(A), [...toBundleRecords(ctxKeyOf(B), [order("wo-injected")], T0.toISOString()), ...toBundleRecords(ctxKeyOf(A), [order("wo-1")], T0.toISOString())]);
    ok((await store.listBundle(ctxKeyOf(B))).every((r) => r.workOrderId === "wo-b") && (await store.listBundle(ctxKeyOf(A))).length === 1, "replaceBundle schreibt keine Datensätze fremder Kontexte");
    await store.clearContext(ctxKeyOf(A));
    ok((await store.listOps(ctxKeyOf(A))).length === 0 && (await store.listBundle(ctxKeyOf(A))).length === 0 && (await store.getMeta(ctxKeyOf(A), "draft:note:wo-1")) === null, "Kontext A gelöscht (Logout)");
    ok((await store.listOps(ctxKeyOf(B))).length === 1 && (await store.listOps(ctxKeyOf(A2))).length === 1, "Daten anderer Kontexte bleiben erhalten");
    ok(!(await store.listContexts()).includes(ctxKeyOf(A)), "Kontext A nicht mehr gelistet");
    // a pass for context A never sends ops of B
    const fake = fakeTransport((o) => applied(o));
    await runSyncPass({ store, ctx: A, transport: fake.transport, deviceId: "d", now: () => at(10) });
    ok(fake.batches.length === 0, "Sync-Pass von A sendet keine Ops von B/A2");
  }

  console.log("\n— Optimistische Auftragsansicht —");
  {
    const record = toBundleRecords("tenant-a:user-1", [order("wo-1", { status: "accepted" })], at(0).toISOString())[0];
    const mk = (opType: OutboxEntry["opType"], payload: Record<string, unknown>, seq: number, status: OutboxEntry["status"] = "queued") => ({
      ...createEntry(A, { opType, payload }, { clientOpId: `op-${seq}`, now: at(seq * 1000), existing: [], seq }),
      status,
      ...(status === "applied" ? { appliedAt: at(seq * 1000).toISOString() } : {}),
    });
    const ops = [
      mk("session.start", { workOrderId: "wo-1", mode: "work" }, 1),
      mk("note.create", { workOrderId: "wo-1", clientId: "n-1", kind: "work_done", text: "Montiert" }, 2),
      mk("checklist.toggle", { workOrderId: "wo-1", itemId: "chk-1", checked: true }, 3),
      mk("photo.attach", { workOrderId: "wo-1", clientId: "p-1", documentId: blobRef("b-1"), photoRequirementId: "req-1" }, 4),
      mk("session.pause", { workOrderId: "wo-1" }, 5),
      mk("note.create", { workOrderId: "wo-1", kind: "general", text: "abgelehnt" }, 6, "rejected"),
      mk("note.create", { workOrderId: "wo-2", kind: "general", text: "anderer Auftrag" }, 7),
    ];
    const view = buildOrderView(record, ops);
    ok(view.status === "paused" && view.local.session === "paused" && view.statusGroup === "in_progress", "Zeiten/Status optimistisch angewendet");
    ok(view.local.notes.length === 1 && view.local.notes[0].text === "Montiert" && view.local.notes[0].pending, "Notiz lokal sichtbar (ausstehend), abgelehnte nicht");
    ok(view.checklistItems[0].checked && view.photoRequirements[0]._count.photos === 1 && view.local.photos[0].blobClientId === "b-1", "Checkliste und Pflichtfoto lokal aktualisiert");
    ok(view.local.pendingOps === 5 && view.local.rejected, "ausstehende Ops gezählt, Fehlerhinweis gesetzt");
    ok(record.data.status === "accepted" && !record.data.checklistItems[0].checked, "Server-Snapshot unverändert");
    const afterPull = buildOrderView({ ...record, syncedAt: at(60_000).toISOString() }, ops.map((o) => ({ ...o, status: "applied" as const, appliedAt: at(10_000).toISOString() })));
    ok(afterPull.status === "accepted" && afterPull.local.notes.length === 0, "nach neuem Pull gilt der Server-Stand");
    ok(prunable(ops.map((o) => ({ ...o, status: "applied" as const, appliedAt: at(10_000).toISOString() })), at(60_000).toISOString()).length === ops.length, "angewendete Ops nach Pull aufräumbar");
  }

  console.log("\n— Vorab-Download / Veraltet / Dokument-Cache —");
  {
    const now = new Date("2026-09-14T10:00:00+02:00");
    const d = (days: number, h = 9) => {
      const x = new Date(now);
      x.setHours(h, 0, 0, 0);
      x.setDate(x.getDate() + days);
      return x.toISOString();
    };
    const orders = [
      order("today", { plannedStart: d(0), plannedEnd: d(0, 17) }),
      order("in3", { plannedStart: d(3) }),
      order("in5", { plannedStart: d(5) }),
      order("running", { status: "in_progress", plannedStart: d(-10) }),
      order("past-planned", { plannedStart: d(-2), plannedEnd: d(-2, 12) }),
      order("undated"),
    ];
    const sel = selectOfflineOrders(orders, now).map((o) => o.id);
    ok(sel.join() === "today,in3,running", "heute + 3 Tage + laufende Aufträge ausgewählt");
    ok(!isBundleStale(new Date(now.getTime() - 6 * 864e5).toISOString(), now, 7) && isBundleStale(new Date(now.getTime() - 8 * 864e5).toISOString(), now, 7), "Bundle nach OFFLINE_MAX_DAYS als veraltet markiert");
    ok(parseMaxDays(undefined) === 7 && parseMaxDays("14") === 14 && parseMaxDays("0") === 7 && parseMaxDays("abc") === 7, "OFFLINE_MAX_DAYS mit Default 7");
    const docs = selectOfflineDocuments([
      { id: "1", category: "technical_drawing", fileSize: 1e6 },
      { id: "2", category: "assembly_instructions", fileSize: 25 * 1024 * 1024 },
      { id: "3", category: "safety_document", fileSize: 26 * 1024 * 1024 },
      { id: "4", category: "order_confirmation", fileSize: 1e5 },
      { id: "1", category: "technical_drawing", fileSize: 1e6 },
    ]);
    ok(docs.map((x) => x.id).join() === "1,2", "Zeichnung/Montageanleitung/Sicherheit ≤ 25 MB, ohne Dubletten");
    const MB = 1024 * 1024;
    const ev = selectEvictions(
      [
        { url: "a", size: 100 * MB, lastUsed: 1 },
        { url: "b", size: 150 * MB, lastUsed: 3 },
        { url: "c", size: 40 * MB, lastUsed: 2 },
      ],
      DOC_CACHE_MAX_BYTES,
      20 * MB,
    );
    ok(ev.join() === "a", "LRU: ältester Eintrag verdrängt, bis 300 MB passen");
    ok(selectEvictions([{ url: "a", size: 10, lastUsed: 1 }], DOC_CACHE_MAX_BYTES).length === 0, "unter dem Limit keine Verdrängung");
    ok(selectEvictions([{ url: "keep", size: 200 * MB, lastUsed: 1 }, { url: "old", size: 200 * MB, lastUsed: 5 }], DOC_CACHE_MAX_BYTES, 0, new Set(["keep"])).join() === "old", "Dokumente des aktuellen Bundles zuletzt verdrängt");
  }

  console.log("\n— Service Worker (public/sw.js) —");
  {
    const sw = readFileSync(new URL("../public/sw.js", import.meta.url), "utf8");
    ok(sw.includes(`"${DOC_CACHE}"`) && sw.includes(`"${PAGE_CACHE}"`) && sw.includes(String(DOC_CACHE_MAX_BYTES / 1024 / 1024)), "Cache-Namen/Limit in sw.js und doc-cache.ts identisch");
    ok(/request\.method !== "GET"/.test(sw), "nur GET-Anfragen werden behandelt (keine Mutationen)");
    ok(/NEVER_CACHE/.test(sw) && sw.includes('"/api/v1/sync"') && sw.includes('"/api/auth"') && sw.includes('"/login"'), "Sync-API, Auth-Routen und Login ausgeschlossen");
    ok(sw.includes('"/m/offline"') && sw.includes("/_next/static/"), "Offline-Fallback und statische Assets berücksichtigt");
    ok(sw.includes("SKIP_WAITING"), "Update-Flow über SKIP_WAITING");
  }

  console.log(`\n${failures === 0 ? "Alle Prüfungen bestanden." : `${failures} Prüfung(en) fehlgeschlagen.`}`);
  process.exit(failures === 0 ? 0 : 1);
}

main().catch((err) => {
  console.error(err);
  process.exit(1);
});