import { beforeEach, describe, expect, it, vi } from "vitest";
import { decrypt } from "./aes";
import { deriveKey } from "../crypto/argon2";
import type { StoredVault } from "../shared/types";

type StorageShape = Record<string, unknown>;

describe("background vault", () => {
  let storage: StorageShape;
  let alarms = { created: [] as Array<{ name: string; delayInMinutes: number }>, cleared: [] as string[] };

  beforeEach(() => {
    vi.resetModules();
    storage = {};
    alarms = { created: [], cleared: [] };

    const chromeMock = {
      storage: {
        local: {
          get: vi.fn(async (key?: string | string[]) => {
            if (!key) return storage;
            if (typeof key === "string") {
              return { [key]: storage[key] };
            }

            return key.reduce<Record<string, unknown>>((result, entry) => {
              result[entry] = storage[entry];
              return result;
            }, {});
          }),
          set: vi.fn(async (next: Record<string, unknown>) => {
            Object.assign(storage, next);
          }),
          remove: vi.fn(async (keys: string | string[]) => {
            const list = Array.isArray(keys) ? keys : [keys];
            for (const key of list) {
              delete storage[key];
            }
          }),
        },
      },
      alarms: {
        clear: vi.fn((name: string) => {
          alarms.cleared.push(name);
        }),
        create: vi.fn((name: string, info: { delayInMinutes: number }) => {
          alarms.created.push({ name, delayInMinutes: info.delayInMinutes });
        }),
        onAlarm: { addListener: vi.fn() },
      },
      idle: {
        setDetectionInterval: vi.fn(),
        onStateChanged: { addListener: vi.fn() },
      },
    } as unknown as typeof chrome;

    (globalThis as { chrome?: typeof chrome }).chrome = chromeMock;

    // Prevent fire-and-forget breach-check fetches from leaking into other tests.
    vi.stubGlobal("fetch", vi.fn(async () => {
      throw new Error("network disabled in tests");
    }));
  });

  it("creates a vault and stores encrypted payload", async () => {
    const vault = await import("./vault");

    await vault.createVault("correct horse battery staple");

    expect(storage.peach_vault_a).toBeDefined();
    expect((storage.peach_vault_a as StoredVault).ciphertext).toBeTruthy();
    expect(vault.getEntries()).toEqual([]);
    expect(alarms.created).toContainEqual({
      name: "autolock",
      delayInMinutes: 5,
    });
  });

  it("writes both slots A and B on vault creation", async () => {
    const vault = await import("./vault");
    await vault.createVault("correct horse battery staple");

    expect(storage.peach_vault_a).toBeDefined();
    expect(storage.peach_vault_b).toBeDefined();
    expect(storage.peach_duress).toBeUndefined();
    expect(storage.peach_vault).toBeUndefined();
    expect(storage.peach_decoy_vault).toBeUndefined();
  });

  it("slot A and slot B have matching ciphertext size at fresh install", async () => {
    const vault = await import("./vault");
    await vault.createVault("correct horse battery staple");

    const a = storage.peach_vault_a as StoredVault;
    const b = storage.peach_vault_b as StoredVault;
    expect(a.ciphertext.length).toBe(b.ciphertext.length);
  });

  it("does not expose a plaintext duress flag after setupDuress", async () => {
    const vault = await import("./vault");
    await vault.createVault("real-password-12345");
    await vault.setupDuress("decoy-password-67890");

    expect(storage.peach_duress).toBeUndefined();
    expect(storage.peach_decoy_vault).toBeUndefined();
    const keys = Object.keys(storage).filter((k) => k.startsWith("peach_"));
    // Slot-neutral keys + optional settings + vault history (snapshot of the
    // pre-setupDuress real-mode blob). No exposed duress flag.
    for (const key of keys) {
      expect(
        [
          "peach_vault_a",
          "peach_vault_b",
          "peach_settings",
          "peach_vault_history",
          "peach_last_modified_at",
        ]
      ).toContain(key);
    }
    expect(keys).toContain("peach_vault_a");
    expect(keys).toContain("peach_vault_b");
  });

  it("unlocks with real password and loads real entries", async () => {
    const vault = await import("./vault");
    await vault.createVault("real-password-12345");
    await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "realsecret",
      url: "github.com",
    });
    vault.lock();

    const ok = await vault.unlock("real-password-12345");
    expect(ok).toBe(true);
    expect(vault.getEntries()).toHaveLength(1);
    expect(vault.getEntries()[0].title).toBe("GitHub");
  });

  it("unlocks with duress password and loads empty entries", async () => {
    const vault = await import("./vault");
    await vault.createVault("real-password-12345");
    await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "realsecret",
      url: "github.com",
    });
    await vault.setupDuress("decoy-password-67890");
    vault.lock();

    const ok = await vault.unlock("decoy-password-67890");
    expect(ok).toBe(true);
    expect(vault.getEntries()).toEqual([]);
  });

  it("runs both slot derivations in parallel for constant-time unlock (DUR-002)", async () => {
    // The unlock path must derive keys for both slots unconditionally so a
    // real-mode unlock and a decoy-mode unlock both spend roughly the same
    // wall-clock time. Verified here by spying on deriveKey and asserting it
    // is called twice (once per slot) on every unlock attempt.
    const argon2 = await import("../crypto/argon2");
    const deriveSpy = vi.spyOn(argon2, "deriveKey");

    const vault = await import("./vault");
    await vault.createVault("real-password-12345");
    await vault.setupDuress("decoy-password-67890");
    vault.lock();

    deriveSpy.mockClear();
    await vault.unlock("real-password-12345");
    expect(deriveSpy).toHaveBeenCalledTimes(2);
    vault.lock();

    deriveSpy.mockClear();
    await vault.unlock("decoy-password-67890");
    expect(deriveSpy).toHaveBeenCalledTimes(2);
    vault.lock();

    deriveSpy.mockClear();
    await vault.unlock("wrong-password-xxxxx");
    expect(deriveSpy).toHaveBeenCalledTimes(2);

    deriveSpy.mockRestore();
  });

  it("rejects wrong passwords", async () => {
    const vault = await import("./vault");
    await vault.createVault("real-password-12345");
    vault.lock();

    const ok = await vault.unlock("nope-nope-nope");
    expect(ok).toBe(false);
  });

  it("persists duressConfigured across lock/unlock in encrypted payload", async () => {
    const vault = await import("./vault");
    await vault.createVault("real-password-12345");
    await vault.setupDuress("decoy-password-67890");
    vault.lock();

    await vault.unlock("real-password-12345");
    expect(await vault.isDuressEnabled()).toBe(true);

    await vault.disableDuress();
    expect(await vault.isDuressEnabled()).toBe(false);
    vault.lock();

    await vault.unlock("real-password-12345");
    expect(await vault.isDuressEnabled()).toBe(false);
  });

  it("migrates legacy peach_vault / peach_decoy_vault / peach_duress schema", async () => {
    // Arrange: set up storage as if from pre-A-2 (v1.4.24 and earlier).
    const firstVault = await import("./vault");
    await firstVault.createVault("legacy-password-abcde");
    const legacySlotA = storage.peach_vault_a as StoredVault;
    storage.peach_vault = legacySlotA;
    delete storage.peach_vault_a;
    delete storage.peach_vault_b;
    storage.peach_duress = { enabled: true };
    storage.peach_decoy_vault = legacySlotA; // reuse shape for test
    vi.resetModules();

    // Act: fresh module load triggers migration on next vault access.
    const vault = await import("./vault");
    await vault.hasVault();

    // Assert: legacy keys removed, new keys present.
    expect(storage.peach_vault).toBeUndefined();
    expect(storage.peach_decoy_vault).toBeUndefined();
    expect(storage.peach_duress).toBeUndefined();
    expect(storage.peach_vault_a).toBeDefined();
    expect(storage.peach_vault_b).toBeDefined();
  });

  it("soft deletes entries while keeping deletedAt in encrypted storage", async () => {
    const vault = await import("./vault");

    await vault.createVault("correct horse battery staple");
    const entry = await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "secret123",
      url: "github.com",
    });

    await vault.deleteEntry(entry.id);

    expect(vault.getEntries()).toEqual([]);

    const stored = storage.peach_vault_a as StoredVault;
    const salt = Uint8Array.from(
      stored.salt.match(/.{1,2}/g)!.map((value: string) => parseInt(value, 16))
    );
    const key = await deriveKey("correct horse battery staple", salt);
    const plain = await decrypt(key, stored.nonce, stored.ciphertext, stored.tag, "slot_a_v1");
    const parsed = JSON.parse(plain) as { entries: Array<{ id: string; deletedAt?: number }> };

    expect(parsed.entries).toHaveLength(1);
    expect(parsed.entries[0].id).toBe(entry.id);
    expect(typeof parsed.entries[0].deletedAt).toBe("number");
  });

  it("accepts imported entries without a username or url", async () => {
    const vault = await import("./vault");

    await vault.createVault("correct horse battery staple");
    const entry = await vault.addEntry({
      title: "Imported Login",
      username: "",
      password: "secret123",
      url: "",
      notes: "migrated from another manager",
    });

    expect(entry.username).toBe("");
    expect(entry.url).toBe("");
    expect(vault.getEntries()).toHaveLength(1);
  });

  it("changePassword happy path — new password unlocks, old is rejected", async () => {
    const vault = await import("./vault");

    await vault.createVault("old-pass-abc123");
    await vault.addEntry({ title: "GitHub", username: "june", password: "secret1", url: "github.com" });
    await vault.addEntry({ title: "Gmail", username: "june", password: "secret2", url: "mail.google.com" });

    expect(await vault.changePassword("old-pass-abc123", "new-pass-xyz789")).toBe(true);

    vault.lock();
    expect(await vault.unlock("new-pass-xyz789")).toBe(true);
    expect(vault.getEntries()).toHaveLength(2);

    vault.lock();
    expect(await vault.unlock("old-pass-abc123")).toBe(false);
  });

  it("stamps peach_last_modified_at on createVault", async () => {
    const vault = await import("./vault");
    const before = Date.now();
    await new Promise((resolve) => setTimeout(resolve, 1));

    await vault.createVault("stamp-create-pass");

    expect(Number(storage.peach_last_modified_at)).toBeGreaterThanOrEqual(before);
  });

  it("stamps peach_last_modified_at on entry mutations through persistEntries", async () => {
    const vault = await import("./vault");
    await vault.createVault("stamp-entry-pass");

    let previous = Number(storage.peach_last_modified_at);
    await new Promise((resolve) => setTimeout(resolve, 1));
    const entry = await vault.addEntry({
      title: "Stamp",
      username: "",
      password: "p",
      url: "",
    });
    expect(Number(storage.peach_last_modified_at)).toBeGreaterThan(previous);

    previous = Number(storage.peach_last_modified_at);
    await new Promise((resolve) => setTimeout(resolve, 1));
    await vault.updateEntry(entry.id, { title: "Stamped" });
    expect(Number(storage.peach_last_modified_at)).toBeGreaterThan(previous);

    previous = Number(storage.peach_last_modified_at);
    await new Promise((resolve) => setTimeout(resolve, 1));
    await vault.deleteEntry(entry.id);
    expect(Number(storage.peach_last_modified_at)).toBeGreaterThan(previous);
  });

  it("stamps peach_last_modified_at on setupDuress and changePassword", async () => {
    const vault = await import("./vault");
    await vault.createVault("stamp-real-pass");

    let previous = Number(storage.peach_last_modified_at);
    await new Promise((resolve) => setTimeout(resolve, 1));
    await vault.setupDuress("stamp-decoy-pass");
    expect(Number(storage.peach_last_modified_at)).toBeGreaterThan(previous);

    previous = Number(storage.peach_last_modified_at);
    await new Promise((resolve) => setTimeout(resolve, 1));
    expect(await vault.changePassword("stamp-real-pass", "stamp-new-pass")).toBe(true);
    expect(Number(storage.peach_last_modified_at)).toBeGreaterThan(previous);
  });

  it("changePassword with wrong current password returns false and leaves slot A unchanged", async () => {
    const vault = await import("./vault");

    await vault.createVault("correct-pass-abcde");
    const slotABefore = JSON.stringify(storage.peach_vault_a);

    expect(await vault.changePassword("wrong-pass", "new-pass")).toBe(false);
    expect(JSON.stringify(storage.peach_vault_a)).toBe(slotABefore);

    vault.lock();
    expect(await vault.unlock("correct-pass-abcde")).toBe(true);
  });

  it("changePassword with duress configured leaves slot B byte-identical", async () => {
    const vault = await import("./vault");

    await vault.createVault("real-pass-abcde");
    await vault.setupDuress("duress-pass-xyzzz");

    const slotBBefore = JSON.stringify(storage.peach_vault_b);
    expect(await vault.changePassword("real-pass-abcde", "new-real-pass-fghij")).toBe(true);
    expect(JSON.stringify(storage.peach_vault_b)).toBe(slotBBefore);

    // Duress path still works with the old decoy password.
    vault.lock();
    expect(await vault.unlock("duress-pass-xyzzz")).toBe(true);
    expect(vault.getEntries()).toEqual([]);
  });

  it("restoreEntries with mode 'replace' and empty incoming throws and leaves entries intact", async () => {
    const vault = await import("./vault");

    await vault.createVault("pass-abcdef");
    await vault.addEntry({ title: "One", username: "", password: "1", url: "" });
    await vault.addEntry({ title: "Two", username: "", password: "2", url: "" });
    await vault.addEntry({ title: "Three", username: "", password: "3", url: "" });

    await expect(vault.restoreEntries([], "replace")).rejects.toThrow(
      /refuse to replace with empty entry set/i
    );
    expect(vault.getEntries()).toHaveLength(3);
  });

  it("changePassword swaps the active key before Slot B is regenerated", async () => {
    const vault = await import("./vault");

    await vault.createVault("correct-pass-12345");
    const entry = await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "secret123",
      url: "https://github.com",
    });

    const setMock = chrome.storage.local.set as unknown as ReturnType<typeof vi.fn>;
    const originalSet = setMock.getMockImplementation();
    let injectedDuringSlotBWrite = false;

    setMock.mockImplementation(async (next: Record<string, unknown>) => {
      Object.assign(storage, next);

      if (!injectedDuringSlotBWrite && "peach_vault_b" in next) {
        injectedDuringSlotBWrite = true;
        await vault.updateEntry(entry.id, { notes: "updated during password change" });
      }
    });

    expect(await vault.changePassword("correct-pass-12345", "new-pass-67890")).toBe(true);

    setMock.mockImplementation(originalSet ?? (async (next: Record<string, unknown>) => {
      Object.assign(storage, next);
    }));

    vault.lock();
    expect(await vault.unlock("new-pass-67890")).toBe(true);
    expect(vault.getEntryById(entry.id)?.notes).toBe("updated during password change");

    vault.lock();
    expect(await vault.unlock("correct-pass-12345")).toBe(false);
  });

  it("restoreEntries replace mode replaces existing entries", async () => {
    const vault = await import("./vault");

    await vault.createVault("replace-pass-12345");
    await vault.addEntry({ title: "A", username: "june", password: "one", url: "https://a.test" });
    await vault.addEntry({ title: "B", username: "june", password: "two", url: "https://b.test" });

    const incoming = [
      {
        id: "entry-c",
        type: "login" as const,
        title: "C",
        username: "june",
        password: "three",
        url: "https://c.test",
        createdAt: 10,
        modifiedAt: 10,
      },
      {
        id: "entry-d",
        type: "login" as const,
        title: "D",
        username: "june",
        password: "four",
        url: "https://d.test",
        createdAt: 20,
        modifiedAt: 20,
      },
    ];

    await expect(vault.restoreEntries(incoming, "replace")).resolves.toEqual({
      added: 2,
      updated: 0,
      skipped: 0,
    });

    expect(vault.getEntries().map((entry) => entry.id)).toEqual(["entry-c", "entry-d"]);
  });

  it("restoreEntries merge mode lets newer incoming entries win", async () => {
    const vault = await import("./vault");

    await vault.createVault("merge-pass-12345");
    const existing = await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "old-secret",
      url: "https://github.com",
    });

    await expect(
      vault.restoreEntries(
        [
          {
            ...existing,
            password: "new-secret",
            modifiedAt: existing.modifiedAt + 100,
          },
        ],
        "merge"
      )
    ).resolves.toEqual({ added: 0, updated: 1, skipped: 0 });

    expect(vault.getEntryById(existing.id)?.password).toBe("new-secret");
  });

  it("restoreEntries merge mode keeps newer local entries when incoming is older", async () => {
    const vault = await import("./vault");

    await vault.createVault("merge-pass-67890");
    const existing = await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "current-secret",
      url: "https://github.com",
    });

    await expect(
      vault.restoreEntries(
        [
          {
            ...existing,
            password: "stale-secret",
            modifiedAt: existing.modifiedAt - 100,
          },
        ],
        "merge"
      )
    ).resolves.toEqual({ added: 0, updated: 0, skipped: 1 });

    expect(vault.getEntryById(existing.id)?.password).toBe("current-secret");
  });

  it("clearVaultEntries without explicit confirmation throws", async () => {
    const vault = await import("./vault");

    await vault.createVault("clear-pass-12345");
    await vault.addEntry({ title: "A", username: "", password: "one", url: "" });

    const clearVaultEntries = vault.clearVaultEntries as unknown as (
      confirmation?: unknown
    ) => Promise<void>;

    await expect(clearVaultEntries()).rejects.toThrow(/explicit confirmation/i);
    await expect(clearVaultEntries("wrong")).rejects.toThrow(/explicit confirmation/i);
    expect(vault.getEntries()).toHaveLength(1);
  });

  it("clearVaultEntries with REPLACE_ALL soft-deletes all entries", async () => {
    const vault = await import("./vault");

    await vault.createVault("clear-pass-67890");
    await vault.addEntry({ title: "A", username: "", password: "one", url: "" });
    await vault.addEntry({ title: "B", username: "", password: "two", url: "" });
    await vault.addEntry({ title: "C", username: "", password: "three", url: "" });

    await vault.clearVaultEntries("REPLACE_ALL");

    expect(vault.getEntries()).toEqual([]);
    expect(vault.getDeletedEntries()).toHaveLength(3);
    expect(vault.getDeletedEntries().every((entry) => typeof entry.deletedAt === "number")).toBe(true);
  });

  it("deduplicateEntries throws in decoy mode", async () => {
    const vault = await import("./vault");

    await vault.createVault("real-pass-12345");
    await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "secret123",
      url: "https://github.com",
    });
    await vault.setupDuress("duress-pass-12345");
    vault.lock();

    expect(await vault.unlock("duress-pass-12345")).toBe(true);
    await expect(vault.deduplicateEntries()).rejects.toThrow(/decoy mode/i);
  });

  it("deduplicateEntries removes older duplicates in real mode", async () => {
    const vault = await import("./vault");

    await vault.createVault("dedupe-pass-12345");
    await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "old-secret",
      url: "https://github.com",
    });
    await new Promise<void>((resolve) => setTimeout(resolve, 5));
    const newer = await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "new-secret",
      url: "https://github.com",
    });

    expect(await vault.deduplicateEntries()).toBe(1);
    expect(vault.getEntries()).toHaveLength(1);
    expect(vault.getEntries()[0].id).toBe(newer.id);
    expect(vault.getDeletedEntries()).toHaveLength(1);
  });

  it("updateEntry with an empty password on a login entry clears the password", async () => {
    const vault = await import("./vault");

    await vault.createVault("update-pass-12345");
    const entry = await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "secret123",
      url: "https://github.com",
    });

    await expect(vault.updateEntry(entry.id, { password: "" })).resolves.toBeUndefined();
    expect(vault.getEntryById(entry.id)?.password).toBeUndefined();
  });

  it("updateEntry with an empty password on a note entry is allowed", async () => {
    const vault = await import("./vault");

    await vault.createVault("note-pass-12345");
    const entry = await vault.addEntry({
      type: "note",
      title: "Secure note",
      notes: "keep me",
    });

    await expect(vault.updateEntry(entry.id, { password: "", notes: "updated" })).resolves.toBeUndefined();
    expect(vault.getEntryById(entry.id)).toMatchObject({
      type: "note",
      notes: "updated",
    });
  });

  it("lock zeroes the derived key and resets unlock state", async () => {
    const aes = await import("./aes");
    const zeroKeySpy = vi.spyOn(aes, "zeroKey");
    const vault = await import("./vault");

    await vault.createVault("lock-pass-12345");
    expect(vault.isUnlocked()).toBe(true);

    vault.lock();

    expect(zeroKeySpy).toHaveBeenCalled();
    expect(vault.isUnlocked()).toBe(false);
    zeroKeySpy.mockRestore();
  });

  it("lock clears in-memory entries", async () => {
    const vault = await import("./vault");

    await vault.createVault("lock-pass-67890");
    const entry = await vault.addEntry({
      title: "GitHub",
      username: "june",
      password: "secret123",
      url: "https://github.com",
    });

    expect(vault.getEntryById(entry.id)?.title).toBe("GitHub");
    vault.lock();
    expect(vault.getEntryById(entry.id)).toBeUndefined();
  });

  it("unlock with neither slot decryptable returns false and leaves the vault locked", async () => {
    const vault = await import("./vault");

    await vault.createVault("real-pass-67890");
    vault.lock();

    expect(await vault.unlock("totally-wrong-password")).toBe(false);
    expect(vault.isUnlocked()).toBe(false);
  });

  it("isUnlocked tracks the full lock lifecycle", async () => {
    const vault = await import("./vault");

    expect(vault.isUnlocked()).toBe(false);
    await vault.createVault("unlock-pass-12345");
    expect(vault.isUnlocked()).toBe(true);
    vault.lock();
    expect(vault.isUnlocked()).toBe(false);
    expect(await vault.unlock("unlock-pass-12345")).toBe(true);
    expect(vault.isUnlocked()).toBe(true);
    vault.lock();
    expect(vault.isUnlocked()).toBe(false);
  });

  it("persistEntries surfaces STORAGE_QUOTA_EXCEEDED when slot writes hit quota", async () => {
    const vault = await import("./vault");

    await vault.createVault("quota-pass-12345");

    const setMock = chrome.storage.local.set as unknown as ReturnType<typeof vi.fn>;
    setMock.mockImplementation(async (next: Record<string, unknown>) => {
      if ("peach_vault_a" in next || "peach_vault_b" in next) {
        throw new Error("QUOTA_BYTES quota reached");
      }
      Object.assign(storage, next);
    });

    await expect(
      vault.addEntry({
        title: "GitHub",
        username: "june",
        password: "secret123",
        url: "https://github.com",
      })
    ).rejects.toThrow("STORAGE_QUOTA_EXCEEDED");
  });

  it("persistSettings surfaces STORAGE_QUOTA_EXCEEDED when settings writes hit quota", async () => {
    const vault = await import("./vault");

    await vault.createVault("settings-pass-12345");

    const setMock = chrome.storage.local.set as unknown as ReturnType<typeof vi.fn>;
    setMock.mockImplementation(async (next: Record<string, unknown>) => {
      if ("peach_settings" in next) {
        throw new Error("QUOTA_BYTES quota reached");
      }
      Object.assign(storage, next);
    });

    await expect(vault.updateSettings({ autoLockMinutes: 10 })).rejects.toThrow(
      "STORAGE_QUOTA_EXCEEDED"
    );
  });

  it("card entry round-trips through vault — all fields preserved", async () => {
    const vault = await import("./vault");

    await vault.createVault("card-test-pass-12345");
    const entry = await vault.addEntry({
      type: "card",
      title: "Personal Visa",
      cardholderName: "Jane Smith",
      cardNumber: "4111111111111111",
      expMonth: "05",
      expYear: "2028",
      cvc: "123",
      cardNickname: "Personal Visa",
      network: "visa",
      last4: "1111",
    });

    expect(entry.type).toBe("card");
    expect(entry.cardholderName).toBe("Jane Smith");
    expect(entry.cardNumber).toBe("4111111111111111");
    expect(entry.expMonth).toBe("05");
    expect(entry.expYear).toBe("2028");
    expect(entry.cvc).toBe("123");
    expect(entry.network).toBe("visa");
    expect(entry.last4).toBe("1111");

    vault.lock();
    await vault.unlock("card-test-pass-12345");
    const entries = vault.getEntries();
    expect(entries).toHaveLength(1);
    expect(entries[0].cardNumber).toBe("4111111111111111");
    expect(entries[0].cvc).toBe("123");
  });

  it("updateEntry — cannot clear card number on card entry", async () => {
    const vault = await import("./vault");

    await vault.createVault("card-guard-pass-12345");
    const entry = await vault.addEntry({
      type: "card",
      title: "My Card",
      cardholderName: "Jane Smith",
      cardNumber: "4111111111111111",
      expMonth: "05",
      expYear: "2028",
      cvc: "123",
    });

    await expect(
      vault.updateEntry(entry.id, { cardNumber: "" })
    ).rejects.toThrow("card number is required for card entries");

    const entries = vault.getEntries();
    expect(entries[0].cardNumber).toBe("4111111111111111");
  });

  it("declineCardSaveOffer — stores fingerprint in settings", async () => {
    const vault = await import("./vault");

    await vault.createVault("decline-pass-12345");
    await vault.declineCardSaveOffer("1111", "05", "2028");

    const settings = vault.getSettings();
    expect(settings.declinedCardFingerprints).toHaveLength(1);
  });

  it("isCardDeclined — returns true for previously declined card", async () => {
    const vault = await import("./vault");

    await vault.createVault("declined-check-pass-12345");
    await vault.declineCardSaveOffer("1111", "05", "2028");

    expect(await vault.isCardDeclined("1111", "05", "2028")).toBe(true);
  });

  it("isCardDeclined — returns false for card with same last4 but different expiry", async () => {
    const vault = await import("./vault");

    await vault.createVault("declined-diff-pass-12345");
    await vault.declineCardSaveOffer("1111", "05", "2028");

    expect(await vault.isCardDeclined("1111", "06", "2028")).toBe(false);
  });

  it("queryDomain matches an entry against its additionalUrls", async () => {
    const vault = await import("./vault");

    await vault.createVault("multi-domain-pass-12345");
    const entry = await vault.addEntry({
      type: "login",
      title: "Foo",
      username: "june",
      password: "secret",
      url: "https://foo.com",
      additionalUrls: ["https://bar.io", "https://baz.org"],
    });

    // Vault index keys by eTLD+1 (tldts.getDomain), so additionalUrls only
    // add new buckets when the eTLD+1 is genuinely different from the primary.
    expect(vault.queryDomain("foo.com").map((e) => e.id)).toContain(entry.id);
    expect(vault.queryDomain("bar.io").map((e) => e.id)).toContain(entry.id);
    expect(vault.queryDomain("baz.org").map((e) => e.id)).toContain(entry.id);
    expect(vault.queryDomain("unrelated.com")).toEqual([]);
  });

  it("updateEntry trims, dedupes, and clears empty additionalUrls", async () => {
    const vault = await import("./vault");

    await vault.createVault("dedupe-additional-pass-12345");
    const entry = await vault.addEntry({
      type: "login",
      title: "Foo",
      username: "june",
      password: "secret",
      url: "https://foo.com",
    });

    await vault.updateEntry(entry.id, {
      additionalUrls: [
        "  https://login.foo.com  ",
        "https://login.foo.com",
        "",
        "  ",
        "https://accounts.foo.com",
      ],
    });

    const stored = vault.getEntryById(entry.id);
    expect(stored?.additionalUrls).toEqual([
      "https://login.foo.com",
      "https://accounts.foo.com",
    ]);

    await vault.updateEntry(entry.id, { additionalUrls: ["", "   "] });
    expect(vault.getEntryById(entry.id)?.additionalUrls).toBeUndefined();
  });

  it("preserves email field through lock/unlock cycle", async () => {
    const vault = await import("./vault");
    await vault.createVault("preserve-email-pass-12345");
    await vault.addEntry({
      type: "login",
      title: "GitHub",
      username: "june",
      email: "ada@proton.me",
      password: "secret",
      url: "https://github.com",
    });
    vault.lock();

    const ok = await vault.unlock("preserve-email-pass-12345");
    expect(ok).toBe(true);
    const entry = vault.getEntries().find((e) => e.title === "GitHub");
    expect(entry?.email).toBe("ada@proton.me");
  });

  it("preserves additionalUrls through lock/unlock cycle", async () => {
    const vault = await import("./vault");
    await vault.createVault("preserve-urls-pass-12345");
    await vault.addEntry({
      type: "login",
      title: "Example",
      username: "june",
      password: "secret",
      url: "https://example.com",
      additionalUrls: [
        "https://beta.example.com",
        "https://staging.example.com",
      ],
    });
    vault.lock();

    const ok = await vault.unlock("preserve-urls-pass-12345");
    expect(ok).toBe(true);
    const entry = vault.getEntries().find((e) => e.title === "Example");
    expect(entry?.additionalUrls).toEqual([
      "https://beta.example.com",
      "https://staging.example.com",
    ]);
  });
});