/**
 * SDK e2e harness entry — the MINIMAL page loaded inside the broker iframe.
 *
 * It imports the REAL `@ng-org/web` `ng` + this package (`@ng-eventually/client`),
 * configures the polyfill session injection exactly the way a consumer does
 * (`configure` + `configureStoreRegistry`), waits for the real broker to hand back
 * a session, then exposes `window.__sdk`: a flat bag of async methods the
 * Playwright test drives. This has ZERO application domain — no Festipod shapes,
 * screens, or entities. It exercises the polyfill's OWN surface against the real
 * broker.
 *
 * Why a bridge object of async methods (not calling the lib from Node): the real
 * `ng` is browser-only (WASM + iframe RPC). Every SDK call must run INSIDE the
 * broker iframe; Playwright reaches in via `frame.evaluate(() => window.__sdk.x())`.
 */

import { ng as realNg, init as realInit } from "@ng-org/web";
import { configure, configureStoreRegistry, setCurrentUser, getCaps, resetCaps } from "@ng-eventually/client/polyfill";
import {
  docs,
  subscribeDoc,
  subscribeDocs,
  readModel,
  inbox,
  discovery,
  storeRegistry,
  useShape as libUseShape,
  watchShape,
  accounts,
} from "@ng-eventually/client";
import type { ShapeObservable, ShapeQuery } from "@ng-eventually/client";

const { IdentityStore } = accounts;

// ── The broker session, resolved once the iframe connects ──────────────────
interface BrokerSession {
  session_id: string;
  private_store_id: string;
  protected_store_id: string;
  public_store_id: string;
  [k: string]: unknown;
}

let session: BrokerSession | null = null;
let sessionResolve!: (s: BrokerSession) => void;
const sessionReady = new Promise<BrokerSession>((r) => (sessionResolve = r));

// A minimal in-memory Set-like, so the lib's read-filtered `useShape` view can be
// exercised WITHOUT the real ORM (`@ng-org/orm` is not installed here, and the
// read-filter is pure — it wraps whatever Set-like the injected useShape returns).
// The injected useShape receives `(shapeType, scope)`; we ignore both and return
// the items array captured by the test through window.__sdk.caps.seedSet().
let injectedSetItems: any[] = [];
function fakeUseShape(_shape: unknown, _scope: unknown): any {
  const items = () => injectedSetItems;
  return {
    get size() { return items().length; },
    [Symbol.iterator]() { return items()[Symbol.iterator](); },
    forEach(cb: (v: unknown) => void) { items().forEach(cb); },
    add(item: any) { injectedSetItems.push(item); },
  };
}

// ── Inject the real SDK + polyfill settings (the consumer bootstrap) ────────
configure({
  ng: realNg,
  useShape: fakeUseShape,
  init: realInit,
});

configureStoreRegistry({
  // The registry (+ subscribe/inbox/discovery/read-model) reach the session
  // through this. It resolves once the broker connects.
  getSession: async () => {
    // Read the CURRENT session (mutable): a fresh session (session_stop+session_start
    // for the reconnection cold-start test) swaps `session` in place, and the SDK must
    // route reads/opens through the NEW session_id. Fall back to the first-connect
    // promise until the initial session lands.
    const s = session ?? (await sessionReady);
    return {
      sessionId: s.session_id,
      privateStoreId: s.private_store_id,
      protectedStoreId: s.protected_store_id,
      publicStoreId: s.public_store_id,
    };
  },
  // Identity normalization used as the shim key (lowercase, strip leading `@`).
  normalizeId: (id: string) => id.trim().replace(/^@/, "").toLowerCase(),
  // REAL broker: enable the POINTER micro-guard. The account records live in a
  // subscribable doc-shim reached via a write-once pointer triple in the store-root;
  // the account read is barrier-authoritative (no account retry). The only residual
  // store-root sync-lag is the pointer read — this bounded guard re-reads JUST that
  // one write-once triple on a cold reconnect (CONTRACT 2 non-fork). It can never
  // provision or fork an account.
  pointerGuard: { attempts: 8, baseMs: 150, maxStepMs: 2000 },
});

// ── Bridge marshaling note ─────────────────────────────────────────────────
// Everything crossing frame.evaluate must be structured-cloneable. NURIs/strings/
// numbers/plain objects are fine. We never return functions or the raw `ng`.

const state: { status: string; error?: string } = { status: "connecting" };

// Identity store over the iframe's localStorage (the real AccountStorage).
const identity = new IdentityStore(
  typeof window !== "undefined" && window.localStorage ? window.localStorage : null,
);

// Expose the bridge immediately (status reflects connection progress).
(window as any).__sdk = {
  status: () => state.status,
  error: () => state.error ?? null,
  sessionInfo: () =>
    session
      ? {
          session_id: session.session_id,
          private_store_id: session.private_store_id,
          protected_store_id: session.protected_store_id,
          public_store_id: session.public_store_id,
        }
      : null,

  /**
   * Export the CURRENT wallet as a `.ngw` file, base64-encoded so it can cross the
   * frame.evaluate bridge back to Node. Used by the reconnection cold-start test to
   * re-import the SAME wallet into a CLEAN browser profile (empty local repo storage)
   * — the only faithful way to force the broker-only cold-start (a fresh profile has
   * no local IndexedDB copy of the repos to eagerly rehydrate).
   */
  async exportWalletFile() {
    const ws = await (realNg as any).get_wallets();
    const walletName = Object.keys(ws ?? {})[0];
    const file = await (realNg as any).wallet_get_file(walletName);
    const bytes = file instanceof Uint8Array ? file : new Uint8Array(file);
    let bin = "";
    for (let i = 0; i < bytes.length; i++) bin += String.fromCharCode(bytes[i]!);
    return { walletName, b64: btoa(bin), len: bytes.length };
  },

  // ── docs primitives ──────────────────────────────────────────────────────
  async docCreate() {
    const s = await sessionReady;
    return docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
  },
  async sparqlUpdate(query: string, anchor?: string) {
    const s = await sessionReady;
    return docs.sparqlUpdate(s.session_id, query, anchor);
  },
  async sparqlQuery(query: string, anchor?: string) {
    const s = await sessionReady;
    return docs.sparqlQuery(s.session_id, query, undefined, anchor);
  },
  /**
   * The load-bearing graph-behavior characterization against the REAL broker.
   * fake-ng cannot verify any of this — it needs the broker's repo_graph_name
   * overlay. This is the ground truth the lib's write/read comments cite.
   *
   * Anchored to doc D, it measures each write shape:
   *   (a) `INSERT DATA { <s> <p> o }` (NO GRAPH) → read anchored default graph
   *   (b) `INSERT DATA { GRAPH <D> { <s> <p> o } }` (explicit plain NURI) → read
   *       both the anchored default graph AND `GRAPH <D>` explicitly
   *   (c) anchorless `SELECT … WHERE { GRAPH ?g { … } }` over TWO docs D and D2 →
   *       does it see BOTH docs' graphs (the O(wallet) union scan)?
   */
  async docRoundTrip() {
    const s = await sessionReady;
    const doc = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
    const subj = "urn:e2e:s";
    // (a) anchored default-graph write (no GRAPH) — the canonical shape the lib writes.
    await docs.sparqlUpdate(
      s.session_id,
      `INSERT DATA { <${subj}> <urn:e2e:anchored> "yes" }`,
      doc,
    );
    // (b) explicit `GRAPH <plainNuri>` write, anchored to the same doc.
    await docs.sparqlUpdate(
      s.session_id,
      `INSERT DATA { GRAPH <${doc}> { <${subj}> <urn:e2e:explicitGraph> "yes" } }`,
      doc,
    );
    // read back anchored default graph — both predicates expected if (b) round-trips.
    const res: any = await docs.sparqlQuery(
      s.session_id,
      `SELECT ?p ?o WHERE { <${subj}> ?p ?o }`,
      undefined,
      doc,
    );
    const rows = Array.isArray(res) ? res : res?.results?.bindings ?? [];
    const preds = rows.map((r: any) => r.p?.value).filter(Boolean);
    // (b, cont.) read the explicit-graph triple back via its OWN named graph, to
    // confirm `GRAPH <plainNuri>` when anchored resolves to the same repo graph.
    const explicitNamed: any = await docs.sparqlQuery(
      s.session_id,
      `SELECT ?o WHERE { GRAPH <${doc}> { <${subj}> <urn:e2e:explicitGraph> ?o } }`,
      undefined,
      doc,
    );
    const enRows = Array.isArray(explicitNamed) ? explicitNamed : explicitNamed?.results?.bindings ?? [];

    // (c) anchorless `GRAPH ?g` union scan across TWO docs. Create a second doc
    // with a DISTINCT triple, then run an ANCHORLESS scan (anchor undefined →
    // UserSite → local union). If it returns rows from BOTH graphs, the anchorless
    // union spans every named graph in the session store — the O(wallet-size) cost
    // the read path exists to avoid. Two docs is enough to demonstrate the union;
    // it does not bloat the wallet.
    let unionSpan: { sawDocA: boolean; sawDocB: boolean; graphCount: number } = {
      sawDocA: false,
      sawDocB: false,
      graphCount: 0,
    };
    try {
      const docB = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
      await docs.sparqlUpdate(
        s.session_id,
        `INSERT DATA { <urn:e2e:s2> <urn:e2e:anchoredB> "yes" }`,
        docB,
      );
      const union: any = await docs.sparqlQuery(
        s.session_id,
        `SELECT ?g ?s ?p WHERE { GRAPH ?g { ?s ?p ?o } }`,
        undefined,
        undefined, // ANCHORLESS → UserSite → local union of all named graphs
      );
      const uRows = Array.isArray(union) ? union : union?.results?.bindings ?? [];
      const subjs = new Set(uRows.map((r: any) => r.s?.value).filter(Boolean));
      const graphs = new Set(uRows.map((r: any) => r.g?.value).filter(Boolean));
      unionSpan = {
        sawDocA: subjs.has(subj),
        sawDocB: subjs.has("urn:e2e:s2"),
        graphCount: graphs.size,
      };
    } catch (e: any) {
      unionSpan = { sawDocA: false, sawDocB: false, graphCount: -1 };
      (unionSpan as any).error = String(e?.message ?? e);
    }

    return {
      doc,
      predicates: preds,
      anchoredPresent: preds.includes("urn:e2e:anchored"),
      explicitGraphPresent: preds.includes("urn:e2e:explicitGraph"),
      explicitViaNamedGraph: enRows.length > 0,
      unionSpan,
    };
  },

  // ── read-model ───────────────────────────────────────────────────────────
  /**
   * Create N docs, write a marker triple into each (anchored default graph), then
   * readUnion over them → one subject per doc. Optionally inject a bad NURI to
   * prove per-doc tolerance (the bad one is skipped, the batch survives).
   */
  async readUnionOverDocs(n: number, includeBad: boolean) {
    const s = await sessionReady;
    const docNuris: string[] = [];
    for (let i = 0; i < n; i++) {
      const d = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
      await docs.sparqlUpdate(
        s.session_id,
        `INSERT DATA { <urn:e2e:rm:${i}> <urn:e2e:idx> "${i}" }`,
        d,
      );
      docNuris.push(d);
    }
    const toRead = includeBad ? [...docNuris, "did:ng:o:definitely-not-a-real-doc-xyz"] : docNuris;
    const subjects = await readModel.readUnion(toRead);
    return { docNuris, subjectCount: subjects.length, subjects };
  },
  /**
   * readUnion cap gate: create a doc, mark it protected for owner O, set the
   * current user to a DIFFERENT identity, and readUnion → the doc is dropped.
   */
  async readUnionCapGate() {
    const s = await sessionReady;
    resetCaps();
    const doc = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
    await docs.sparqlUpdate(s.session_id, `INSERT DATA { <urn:e2e:cg> <urn:e2e:p> "x" }`, doc);
    getCaps().open(doc, "protected", "owner-O");
    setCurrentUser("someone-else");
    const asStranger = await readModel.readUnion([doc]);
    setCurrentUser("owner-O");
    const asOwner = await readModel.readUnion([doc]);
    resetCaps();
    setCurrentUser(null);
    return { strangerCount: asStranger.length, ownerCount: asOwner.length };
  },

  // ── reactivity (doc_subscribe) ───────────────────────────────────────────
  // The test installs a counter; subscribeDoc pushes an initial state, then a
  // push per subsequent write. We record every push and expose the count/log so
  // the test can wait event-driven (waitForFunction on the counter), never timed.
  _subs: {} as Record<string, { count: number; unsub: () => void }>,
  async subscribeDocStart(handle: string) {
    const s = await sessionReady;
    const doc = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
    const rec = { count: 0, unsub: () => {} };
    (window as any).__sdk._subs[handle] = rec;
    rec.unsub = subscribeDoc(doc, () => {
      rec.count += 1;
    });
    return { doc };
  },
  subscribeCount(handle: string) {
    return (window as any).__sdk._subs[handle]?.count ?? -1;
  },
  async writeTo(doc: string, marker: string) {
    const s = await sessionReady;
    await docs.sparqlUpdate(
      s.session_id,
      `INSERT DATA { <urn:e2e:sub:${marker}> <urn:e2e:m> "${marker}" }`,
      doc,
    );
  },
  subscribeStop(handle: string) {
    const rec = (window as any).__sdk._subs[handle];
    if (rec) rec.unsub();
  },
  /**
   * subscribeDocs isolation: subscribe to [goodDoc, deadDoc]. The dead doc's
   * subscription fails in isolation; the good doc still fires on its write.
   */
  _multiSub: { good: 0, bad: 0, unsub: () => {} },
  async subscribeDocsStart() {
    const s = await sessionReady;
    const good = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
    const bad = "did:ng:o:absent-doc-never-created";
    const rec = { good: 0, bad: 0, unsub: () => {} };
    (window as any).__sdk._multiSub = rec;
    rec.unsub = subscribeDocs([good, bad], (nuri) => {
      if (nuri === good) rec.good += 1;
      else rec.bad += 1;
    });
    return { good, bad };
  },
  multiSubCounts() {
    const r = (window as any).__sdk._multiSub;
    return { good: r.good, bad: r.bad };
  },
  multiSubStop() {
    (window as any).__sdk._multiSub.unsub();
  },

  // ── inbox ────────────────────────────────────────────────────────────────
  async inboxPostRead(payloadA: unknown, payloadB: unknown) {
    const s = await sessionReady;
    const target = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
    setCurrentUser("inbox-user");
    await inbox.post(target, { payload: payloadA, from: null, ts: 1000 });
    await inbox.post(target, { payload: payloadB, from: null, ts: 2000 });
    const deposits = await inbox.read(target);
    setCurrentUser(null);
    return { target, deposits };
  },
  // watch (doc_subscribe-based) fires when a deposit lands.
  _inboxWatch: { fires: 0, lastLen: -1, unsub: () => {}, target: "" },
  async inboxWatchStart() {
    const s = await sessionReady;
    const target = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
    const rec = { fires: 0, lastLen: -1, unsub: () => {}, target };
    (window as any).__sdk._inboxWatch = rec;
    rec.unsub = inbox.watch(target, (deposits) => {
      rec.fires += 1;
      rec.lastLen = deposits.length;
    });
    return { target };
  },
  async inboxWatchDeposit(payload: unknown) {
    const rec = (window as any).__sdk._inboxWatch;
    setCurrentUser("watcher");
    await inbox.post(rec.target, { payload, from: null });
    setCurrentUser(null);
  },
  inboxWatchState() {
    const r = (window as any).__sdk._inboxWatch;
    return { fires: r.fires, lastLen: r.lastLen };
  },
  inboxWatchStop() {
    (window as any).__sdk._inboxWatch.unsub();
  },
  // spoof guard: depositing as another principal throws.
  async inboxSpoofGuard() {
    const s = await sessionReady;
    const target = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
    setCurrentUser("alice");
    let threw = false;
    try {
      await inbox.post(target, { payload: { x: 1 }, from: "bob" });
    } catch {
      threw = true;
    }
    // self + anonymous both allowed
    let selfOk = true, anonOk = true;
    try { await inbox.post(target, { payload: { x: 2 }, from: "alice" }); } catch { selfOk = false; }
    try { await inbox.post(target, { payload: { x: 3 }, from: null }); } catch { anonOk = false; }
    setCurrentUser(null);
    return { spoofRejected: threw, selfOk, anonOk };
  },

  // ── discovery index ──────────────────────────────────────────────────────
  async discoverySubmitRead(ref: unknown) {
    setCurrentUser("publisher");
    await discovery.submitToIndex(ref);
    setCurrentUser(null);
    const entries = await discovery.readIndex();
    return { entries };
  },
  _discWatch: { fires: 0, lastLen: -1, unsub: () => {} },
  discoveryWatchStart() {
    const rec = { fires: 0, lastLen: -1, unsub: () => {} };
    (window as any).__sdk._discWatch = rec;
    rec.unsub = discovery.watchIndex((entries) => {
      rec.fires += 1;
      rec.lastLen = entries.length;
    });
  },
  async discoverySubmit(ref: unknown) {
    setCurrentUser("publisher2");
    await discovery.submitToIndex(ref);
    setCurrentUser(null);
  },
  discoveryWatchState() {
    const r = (window as any).__sdk._discWatch;
    return { fires: r.fires, lastLen: r.lastLen };
  },
  discoveryWatchStop() {
    (window as any).__sdk._discWatch.unsub();
  },
  // reserved @index account isolation: a real user named "index"/"@index" resolves
  // to a DIFFERENT account than the reserved index owner.
  async discoveryIndexIsolation() {
    const userIndex = await storeRegistry.ensureAccount("@index");
    const reserved = await storeRegistry.ensureAccount(discovery.INDEX_ACCOUNT);
    return {
      userIndexDoc: userIndex.docPublic,
      reservedDoc: reserved.docPublic,
      disjoint: userIndex.docPublic !== reserved.docPublic,
    };
  },

  // ── store-registry ───────────────────────────────────────────────────────
  async ensureAccountIdempotent(id: string) {
    storeRegistry.resetRegistryCache();
    const first = await storeRegistry.ensureAccount(id);
    storeRegistry.resetRegistryCache();
    const second = await storeRegistry.ensureAccount(id);
    return {
      firstDocs: [first.docPublic, first.docProtected, first.docPrivate],
      secondDocs: [second.docPublic, second.docProtected, second.docPrivate],
      same:
        first.docPublic === second.docPublic &&
        first.docProtected === second.docProtected &&
        first.docPrivate === second.docPrivate,
    };
  },
  async entityDocsBounded(idA: string, idB: string) {
    storeRegistry.resetRegistryCache();
    const dA1 = await storeRegistry.createEntityDoc(idA, "public");
    const dA2 = await storeRegistry.createEntityDoc(idA, "public");
    const dB1 = await storeRegistry.createEntityDoc(idB, "public");
    // listMyEntityDocs(A) → only A's docs (poll: the index append can lag).
    let listA: string[] = [];
    for (let i = 0; i < 12; i++) {
      storeRegistry.resetRegistryCache();
      listA = await storeRegistry.listMyEntityDocs(idA, "public");
      if (listA.includes(dA1) && listA.includes(dA2)) break;
      await new Promise((r) => setTimeout(r, 1000));
    }
    return {
      dA1, dA2, dB1,
      listA,
      hasA1: listA.includes(dA1),
      hasA2: listA.includes(dA2),
      leaksB: listA.includes(dB1),
    };
  },
  /**
   * RECONNECTION cold-start seed (phase 1, run in the FIRST session).
   *
   * Create a per-entity document under (id, scope) — which also appends its NURI to
   * the account's scope-index document — and write a marker triple INTO the entity
   * doc (anchored default graph, the canonical shape). Poll until listMyEntityDocs
   * sees it, so the index append has actually landed on the broker before we tear
   * the session down. Returns everything the FRESH session needs to re-find it
   * purely from the persistent wallet: only `id` + `scope` are load-bearing (the
   * fresh session re-resolves the account from the shim); entityNuri/marker are the
   * expected values to assert against.
   */
  async reconnectSeed(id: string, scope: "public" | "protected" | "private") {
    storeRegistry.resetRegistryCache();
    const s = await sessionReady;
    const entityNuri = await storeRegistry.createEntityDoc(id, scope);
    const marker = "recon-" + Date.now();
    await docs.sparqlUpdate(
      s.session_id,
      `INSERT DATA { <urn:e2e:recon:subject> <urn:e2e:recon:marker> "${marker}" }`,
      entityNuri,
    );
    // Wait until the index append + the triple are visible in THIS session (the
    // session that created them — where the repos are already open), so we know the
    // data is persisted before the fresh session tries to read it back.
    let listed: string[] = [];
    for (let i = 0; i < 15; i++) {
      storeRegistry.resetRegistryCache();
      listed = await storeRegistry.listMyEntityDocs(id, scope);
      if (listed.includes(entityNuri)) break;
      await new Promise((r) => setTimeout(r, 1000));
    }
    return { id, scope, entityNuri, marker, listedInSeed: listed };
  },
  /**
   * RECONNECTION read (phase 2, run in a FRESH session over the SAME wallet). First a
   * DIAGNOSTIC raw anchored read with NO open (rawRowCount), then re-resolve the
   * account's entity docs of `scope` (listMyEntityDocs → readScopeIndex) and readUnion
   * them, purely from the persistent wallet — nothing from phase 1's session state
   * carries over. The SDK's open-before-read heal (open-repo.ts) opens each repo via
   * doc_subscribe before the anchored reads. NB: on the SDK/broker version tested here
   * the broker-login bootstrap already opens the user's repos, so rawRowCount is
   * non-zero even without the heal — this is a reconnection REGRESSION guard, not a
   * fail-without-the-fix proof (see run.ts's reconnection step comment).
   */
  async reconnectRead(id: string, scope: "public" | "protected" | "private", entityNuri: string, marker: string) {
    // DIAGNOSTIC: a RAW anchored read of the entity doc with NO open at all, first
    // thing in the fresh session — reports how many rows the bare anchored query
    // resolves for a not-yet-opened repo (the premise: 0 until opened). Uses the
    // low-level docs primitive directly, bypassing readUnion's open step.
    const s = session ?? (await sessionReady);
    let rawRowCount = -1;
    try {
      const raw: any = await docs.sparqlQuery(s.session_id, "SELECT ?s ?p ?o WHERE { ?s ?p ?o }", undefined, entityNuri);
      rawRowCount = Array.isArray(raw) ? raw.length : (raw?.results?.bindings?.length ?? 0);
    } catch (e: any) {
      rawRowCount = -2; // threw (e.g. RepoNotFound / InvalidNuri)
    }

    storeRegistry.resetRegistryCache();
    const listed = await storeRegistry.listMyEntityDocs(id, scope);
    const subjects = await readModel.readUnion(listed.length ? listed : [entityNuri]);
    const markers: string[] = [];
    for (const subj of subjects) {
      for (const vals of Object.values(subj.props)) {
        for (const v of vals) markers.push(v);
      }
    }
    return {
      rawRowCount,
      listed,
      listedCount: listed.length,
      foundEntity: listed.includes(entityNuri),
      subjectCount: subjects.length,
      markerPresent: markers.includes(marker),
      markers,
    };
  },
  /**
   * NON-FORK contract probe. Resolve (or create on first sight) the account for
   * `id` and return its THREE scope-document NURIs (docPublic/docProtected/
   * docPrivate) exactly as ensureAccount records them in the shim. Run in session 1
   * it PROVISIONS the account (first NURIs); run in a FRESH faithful reconnect
   * session it must RE-RESOLVE the SAME account from the synced shim and return the
   * SAME NURIs — never a second provisioning (an account fork). resetRegistryCache
   * first so the resolve goes to the shim, not a same-session in-memory hit.
   */
  async accountDocs(id: string) {
    storeRegistry.resetRegistryCache();
    const rec = await storeRegistry.ensureAccount(id);
    return { docPublic: rec.docPublic, docProtected: rec.docProtected, docPrivate: rec.docPrivate };
  },
  async scopeResolvers() {
    const priv = await storeRegistry.resolveScopeGraph("private");
    const prot = await storeRegistry.resolveScopeGraph("protected");
    const pub = await storeRegistry.resolveScopeGraph("public");
    return { priv, prot, pub };
  },

  /**
   * COLD-START anchor probe. Runs the EXACT shim SELECT the registry issues,
   * anchored to `did:ng:${private_store_id}` (the shim anchor), as the very first
   * thing in a fresh session — BEFORE anything opens that repo. Reports whether the
   * raw anchored query threw `RepoNotFound` (the cold-start bug: the private-store
   * repo not yet in `self.repos`) or returned rows. Uses the low-level docs
   * primitive directly so nothing (open-repo, ensureAccount) opens the repo first.
   */
  async shimAnchorProbe() {
    const s = session ?? (await sessionReady);
    const anchor = `did:ng:${s.private_store_id}`;
    const query =
      "SELECT ?acc WHERE { GRAPH <" +
      anchor +
      "> { ?acc a <urn:ng-eventually:shim:Account> } }";
    try {
      const res: any = await docs.sparqlQuery(s.session_id, query, undefined, anchor);
      const rows = Array.isArray(res) ? res.length : (res?.results?.bindings?.length ?? 0);
      return { threw: false, error: null, rows, anchor };
    } catch (e: any) {
      return { threw: true, error: String(e?.message ?? e), rows: -1, anchor };
    }
  },
  /**
   * COLD-START account provision. resetRegistryCache then ensureAccount(id) — the
   * real bootstrap the app runs on first login. On a fresh wallet, if the anchor
   * repo isn't open, resolveAccount's read AND ensureAccount's provision write both
   * hit RepoNotFound; the account never persists. Returns the 3 scope docs (all
   * truthy iff provisioning succeeded) so the runner can gate on real persistence.
   */
  async coldEnsureAccount(id: string) {
    storeRegistry.resetRegistryCache();
    try {
      const rec = await storeRegistry.ensureAccount(id);
      return {
        threw: false,
        error: null,
        docPublic: rec.docPublic,
        docProtected: rec.docProtected,
        docPrivate: rec.docPrivate,
      };
    } catch (e: any) {
      return { threw: true, error: String(e?.message ?? e), docPublic: "", docProtected: "", docPrivate: "" };
    }
  },
  /**
   * VERIFY the provisioned account actually PERSISTED to the shim: resetRegistryCache
   * then re-resolve the SAME id via a fresh anchored read. Returns whether the read
   * threw + the resolved docs. After the fix, on a fresh wallet this returns the SAME
   * docs coldEnsureAccount minted (real persistence, no RepoNotFound).
   */
  async verifyShimPersisted(id: string) {
    storeRegistry.resetRegistryCache();
    try {
      const rec = await storeRegistry.ensureAccount(id);
      return { threw: false, error: null, docPublic: rec.docPublic, docProtected: rec.docProtected, docPrivate: rec.docPrivate };
    } catch (e: any) {
      return { threw: true, error: String(e?.message ?? e), docPublic: "", docProtected: "", docPrivate: "" };
    }
  },

  // ── watchShape (reactive useQuery-shaped read) ───────────────────────────
  // A minimal SHEX-ish ShapeType pinning rdf:type to an e2e class IRI. watchShape
  // reads only `.shape`/`.schema[...].predicates[rdf:type].dataTypes[].literals`
  // to know which @type to keep — generic, no application domain.
  _wsProbes: {} as Record<
    string,
    { obs: ShapeObservable; initial: ShapeQuery; unsub: () => void }
  >,
  /**
   * REAL-BROKER cycle proof. Under a fresh identity, create ONE protected entity
   * document carrying an rdf:type=<e2e class> triple, then open a `watchShape` over
   * (that class shape, "protected"). Capture the FIRST snapshot right after subscribe
   * (must be isPending) so the caller can then wait event-driven for isSuccess with
   * the seeded datum present. Returns the handle + the initial snapshot + the seed
   * doc/type so the runner can assert the data landed.
   */
  async watchShapeSeedAndSubscribe(handle: string, cls: string) {
    storeRegistry.resetRegistryCache();
    const id = "@ws-" + handle;
    setCurrentUser(id);
    const doc = await storeRegistry.createEntityDoc(id, "protected");
    const s = await sessionReady;
    // Seed the entity doc with the shape's type + a title (anchored default graph).
    await docs.sparqlUpdate(
      s.session_id,
      `INSERT DATA { <${doc}> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <${cls}> ; <urn:e2e:ws:title> "seeded" }`,
      doc,
    );
    // Wait until this session sees the index append (data persisted on the broker).
    for (let i = 0; i < 15; i++) {
      storeRegistry.resetRegistryCache();
      const listed = await storeRegistry.listMyEntityDocs(id, "protected");
      if (listed.includes(doc)) break;
      await new Promise((r) => setTimeout(r, 1000));
    }
    const shape = {
      shape: "urn:e2e:ws:Shape",
      schema: {
        "urn:e2e:ws:Shape": {
          iri: "urn:e2e:ws:Shape",
          predicates: [
            {
              iri: "http://www.w3.org/1999/02/22-rdf-syntax-ns#type",
              readablePredicate: "type",
              maxCardinality: 1,
              minCardinality: 1,
              dataTypes: [{ literals: [cls], valType: "iri" }],
            },
          ],
        },
      },
    };
    const obs = watchShape(shape, "protected") as ShapeObservable;
    const unsub = obs.subscribe(() => {});
    // First snapshot immediately after subscribe — the barrier is not yet crossed
    // (docs opening via doc_subscribe), so this MUST be pending.
    const initial = obs.getSnapshot();
    (window as any).__sdk._wsProbes[handle] = { obs, initial, unsub };
    // NB: leave the current user SET for the probe's lifetime — watchShape resolves
    // the scope from getCurrentUser() on every (reactive) refresh, exactly as the app
    // keeps a stable identity. watchShapeStop clears it.
    return { doc, cls, initial: { isPending: initial.isPending, isSuccess: initial.isSuccess, dataLen: initial.data.length } };
  },
  /** Current snapshot of a watchShape probe (event-driven poll target). */
  watchShapeSnapshot(handle: string) {
    const rec = (window as any).__sdk._wsProbes[handle];
    if (!rec) return null;
    const snap: ShapeQuery = rec.obs.getSnapshot();
    return {
      isPending: snap.isPending,
      isSuccess: snap.isSuccess,
      isError: snap.isError,
      dataLen: snap.data.length,
      // The seeded title, if the datum is present (proves the real data landed).
      titles: snap.data.flatMap((d: any) => d.props?.["urn:e2e:ws:title"] ?? []),
    };
  },
  watchShapeStop(handle: string) {
    const rec = (window as any).__sdk._wsProbes[handle];
    if (rec) rec.unsub();
    setCurrentUser(null);
  },
  /**
   * EMPTY-scope proof: a brand-new identity with NO entity docs of `scope`. watchShape
   * must reach isSuccess with data:[] (synced-but-empty), NOT stay pending. Returns
   * the handle; poll watchShapeSnapshot for the transition.
   */
  watchShapeEmptyStart(handle: string, cls: string) {
    storeRegistry.resetRegistryCache();
    const id = "@ws-empty-" + handle;
    setCurrentUser(id);
    const shape = {
      shape: "urn:e2e:ws:Shape",
      schema: {
        "urn:e2e:ws:Shape": {
          iri: "urn:e2e:ws:Shape",
          predicates: [
            {
              iri: "http://www.w3.org/1999/02/22-rdf-syntax-ns#type",
              readablePredicate: "type",
              maxCardinality: 1,
              minCardinality: 1,
              dataTypes: [{ literals: [cls], valType: "iri" }],
            },
          ],
        },
      },
    };
    const obs = watchShape(shape, "protected") as ShapeObservable;
    const unsub = obs.subscribe(() => {});
    const initial = obs.getSnapshot();
    (window as any).__sdk._wsProbes[handle] = { obs, initial, unsub };
    // Keep the identity set for the probe's lifetime (watchShapeStop clears it): a
    // faithful "empty scope for a real identity", not "no identity at all".
    return { initial: { isPending: initial.isPending, isSuccess: initial.isSuccess } };
  },

  // ── caps / read-filter (in-memory cap model) ─────────────────────────────
  // The read-filter over the injected useShape Set-like. Boundary note: the
  // caps/read-filter are EMULATED in-memory (CapRegistry) — the real broker does
  // NOT yet enforce per-doc read caps here (one shared wallet reads everything).
  // We test what the SDK enforces: the in-memory read-filtered VIEW.
  capsReadFilter() {
    resetCaps();
    injectedSetItems = [
      { "@graph": "did:ng:o:protdoc", "@id": "1", v: "protected-item" },
      { "@graph": "did:ng:o:pubdoc", "@id": "2", v: "public-item" },
      { "@graph": "did:ng:o:ungoverned", "@id": "3", v: "ungoverned-item" },
    ];
    getCaps().open("did:ng:o:protdoc", "protected", "owner-O");
    getCaps().makePublic("did:ng:o:pubdoc");
    // as owner-O
    setCurrentUser("owner-O");
    const ownerView = [...(libUseShape(null, null) as Iterable<any>)].map((i) => i.v);
    // as a stranger
    setCurrentUser("stranger");
    const strangerView = [...(libUseShape(null, null) as Iterable<any>)].map((i) => i.v);
    resetCaps();
    injectedSetItems = [];
    setCurrentUser(null);
    return { ownerView, strangerView };
  },
  capsDirectedGrant() {
    resetCaps();
    injectedSetItems = [{ "@graph": "did:ng:o:sharedoc", "@id": "1", v: "shared-item" }];
    getCaps().open("did:ng:o:sharedoc", "protected", "owner-O");
    setCurrentUser("friend");
    const before = [...(libUseShape(null, null) as Iterable<any>)].length;
    getCaps().grantRead("did:ng:o:sharedoc", "friend");
    const after = [...(libUseShape(null, null) as Iterable<any>)].length;
    resetCaps();
    injectedSetItems = [];
    setCurrentUser(null);
    return { before, after };
  },

  // ── accounts (IdentityStore) ─────────────────────────────────────────────
  identitySet(id: string) { return identity.set(id); },
  identityGet() { return identity.get(); },
  identityClear() { identity.clear(); return identity.get(); },

  // ── CONTRACT: first-State barrier (doc_subscribe sync-point) ────────────
  //
  // The contract under test: the 1st event emitted by doc_subscribe is a `State`
  // that marks the end of the initial broker sync. After that push:
  //   - if the doc has data → it MUST be present in the State (no "not yet synced")
  //   - if the doc is empty → it IS definitively empty (no later arrival)
  //
  // We drive this via the polyfill's subscribeDoc (which calls ng.doc_subscribe
  // directly), but we capture the RAW AppResponse for each push so we can:
  //   (a) identify the event type  (State vs Patch vs TabInfo vs other)
  //   (b) measure the time-to-first-State
  //   (c) correlate "State received" with the SPARQL content query result
  //
  // Bridge state for a single active first-State probe.
  _stateProbe: null as null | {
    doc: string;
    startMs: number;
    events: Array<{ typeKey: string; elapsedMs: number }>;
    unsub: () => void;
  },

  /**
   * PRESENCE probe — phase 1: write a triple into `doc` (same session, so the
   * write is already committed on the broker before we subscribe). Returns the doc
   * NURI so the test can hand it to stateProbeSubscribe. Split into write + subscribe
   * so the test controls the ordering precisely.
   */
  async stateProbeWrite(triple: { s: string; p: string; o: string }): Promise<string> {
    const s = await sessionReady;
    const doc = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
    await docs.sparqlUpdate(
      s.session_id,
      `INSERT DATA { <${triple.s}> <${triple.p}> "${triple.o}" }`,
      doc,
    );
    return doc;
  },

  /**
   * Subscribe to `doc` and record every raw event (type key + elapsed ms from
   * subscribe call). The state probe slot is single-use per call; a previous probe
   * is torn down first. `subscribeDoc` is the polyfill wrapper — it passes the raw
   * AppResponse straight through to the callback.
   */
  stateProbeSubscribe(doc: string): void {
    // Tear down any prior probe.
    const prev = (window as any).__sdk._stateProbe;
    if (prev) { try { prev.unsub(); } catch { /* ignore */ } }
    const probe = {
      doc,
      startMs: Date.now(),
      events: [] as Array<{ typeKey: string; elapsedMs: number }>,
      unsub: () => {},
    };
    (window as any).__sdk._stateProbe = probe;
    probe.unsub = subscribeDoc(doc, (resp: any) => {
      const elapsedMs = Date.now() - probe.startMs;
      // AppResponse shape: { V0: { State: … } } | { V0: { Patch: … } } | { V0: { TabInfo: … } } | …
      let typeKey = "unknown";
      try {
        const v0 = resp?.V0 ?? resp?.v0 ?? resp;
        if (v0 && typeof v0 === "object") {
          const keys = Object.keys(v0);
          typeKey = keys[0] ?? "empty";
        } else {
          typeKey = String(v0);
        }
      } catch { typeKey = "parse-error"; }
      probe.events.push({ typeKey, elapsedMs });
    });
  },

  /** Return the accumulated event log (snapshot — safe to call at any time). */
  stateProbeEvents(): Array<{ typeKey: string; elapsedMs: number }> {
    return (window as any).__sdk._stateProbe?.events ?? [];
  },

  /**
   * Return the count of events with typeKey === `State` received so far.
   * Used by waitForFunction to wait for the first State (not just any event —
   * the broker pushes TabInfo first, State second).
   */
  stateProbeStateCount(): number {
    const events: Array<{ typeKey: string }> = (window as any).__sdk._stateProbe?.events ?? [];
    return events.filter((e) => e.typeKey === "State").length;
  },

  /**
   * After the first State has been received, run an anchored SPARQL query on the
   * probe doc to read back its triples. Returns the raw rows so the test can assert
   * presence/absence without re-querying from the test side.
   */
  async stateProbeQuery(s_uri: string, p_uri: string): Promise<{ rows: number; found: boolean }> {
    const s = await sessionReady;
    const doc = (window as any).__sdk._stateProbe?.doc;
    if (!doc) return { rows: -1, found: false };
    try {
      const res: any = await docs.sparqlQuery(
        s.session_id,
        `SELECT ?o WHERE { <${s_uri}> <${p_uri}> ?o }`,
        undefined,
        doc,
      );
      const rows = Array.isArray(res)
        ? res.length
        : (res?.results?.bindings?.length ?? 0);
      return { rows, found: rows > 0 };
    } catch (e: any) {
      return { rows: -2, found: false };
    }
  },

  /** Stop the active probe's subscription. */
  stateProbeStop(): void {
    const probe = (window as any).__sdk._stateProbe;
    if (probe) { try { probe.unsub(); } catch { /* ignore */ } }
    (window as any).__sdk._stateProbe = null;
  },

  /**
   * ABSENCE probe — subscribe to a doc NURI that was never written (non-existent).
   * Returns the doc immediately after creating it (empty), then subscribes.
   * The test waits for the first State, then verifies the doc is empty AND stays
   * empty for a grace window (no late Patch arrival).
   */
  async stateProbeEmptyDoc(): Promise<string> {
    // Create a real doc so it's valid for doc_subscribe, but write NOTHING into it.
    const s = await sessionReady;
    const doc = await docs.docCreate(s.session_id, "Graph", "data:graph", "store", undefined);
    // Subscribe immediately (no data written).
    (window as any).__sdk.stateProbeSubscribe(doc);
    return doc;
  },
};

// ── Connect to the real broker ─────────────────────────────────────────────
// Mirrors ngSession.ts: register the init callback; the broker (this iframe is
// loaded by it) drives the connection and calls back with the session.
(async () => {
  try {
    await (realInit as any)(
      (event: any) => {
        session = event.session as BrokerSession;
        state.status = "connected";
        sessionResolve(session);
      },
      true,
      [],
    );
  } catch (e: any) {
    state.status = "error";
    state.error = String(e?.message ?? e);
  }
})();