// Render tests for the License card (#347). No jsdom needed: react-dom/server
// renders in vitest's node environment, and the license context and machine
// hook are replaced by fakes so each test pins one visible state. The fake
// hook computes its flags with the real selectors.
import { describe, it, expect, vi, beforeEach } from "vitest";
import type { ReactElement } from "react";
import { renderToStaticMarkup } from "react-dom/server";

vi.mock("@tauri-apps/api/core", () => ({ invoke: vi.fn() }));
vi.mock("@tauri-apps/plugin-opener", () => ({ openUrl: vi.fn(() => Promise.resolve()) }));

let language = "fr";
vi.mock("react-i18next", () => ({
  useTranslation: () => ({
    t: (k: string, o?: Record<string, unknown>) =>
      o ? `${k}[${Object.entries(o).map(([a, b]) => `${a}=${String(b)}`).join(",")}]` : k,
    i18n: { language },
  }),
}));

let context: Record<string, unknown>;
vi.mock("../../contexts/LicenseContext", async (importOriginal) => ({
  ...(await importOriginal<typeof import("../../contexts/LicenseContext")>()),
  useLicenseContext: () => context,
}));

let machines: Record<string, unknown>;
vi.mock("../../hooks/useLicenseMachines", async (importOriginal) => ({
  ...(await importOriginal<typeof import("../../hooks/useLicenseMachines")>()),
  useLicenseMachines: () => machines,
}));

import LicenseCard from "./LicenseCard";
import { licenseIdentity } from "../../contexts/LicenseContext";
import {
  initialLicenseMachinesState,
  selectCanActivate,
  selectCanDeactivate,
  selectShowEmptyState,
  type LicenseMachinesState,
} from "../../hooks/useLicenseMachines";
import { parseLicenseError, type LicenseInfo, type MachineInfo } from "../../services/licenseService";

const DAY_S = 86400;
const nowS = () => Math.floor(Date.now() / 1000);
// Noon UTC, so the calendar day is the same in UTC (CI) and America/Toronto.
const TEN_YEAR_EXPIRY_S = Date.UTC(2036, 8, 26, 12) / 1000;

const machine = (id: string, isThisMachine = false): MachineInfo => ({
  machine_id: id,
  machine_name: `host-${id}`,
  activated_at: "2026-09-01T12:00:00Z",
  last_seen_at: "2026-09-20T12:00:00Z",
  is_this_machine: isThisMachine,
});

/** What the real hook returns for `state`, with its real selectors. */
function hookView(partial: Partial<LicenseMachinesState>, revoked = false) {
  const state: LicenseMachinesState = { ...initialLicenseMachinesState, ...partial };
  return {
    state,
    revoked,
    activate: vi.fn(),
    deactivate: vi.fn(),
    toggleList: vi.fn(),
    showEmptyState: selectShowEmptyState(state),
    canDeactivate: selectCanDeactivate(state),
    canActivate: selectCanActivate(state, revoked),
  };
}

const notActivated = { is_activated: false };
const loadedList = (list: MachineInfo[]) => ({
  listOpen: true,
  listLoaded: true,
  machines: list,
});

const render = () => renderToStaticMarkup(<LicenseCard />);

beforeEach(() => {
  language = "fr";
  context = {
    status: "ready",
    edition: "base",
    features: [],
    info: {
      edition: "base",
      email: "user@example.com",
      features: [],
      machine_limit: 3,
      issued_at: nowS(),
      expires_at: TEN_YEAR_EXPIRY_S,
      revoked: false,
    },
    error: null,
    validating: false,
    validationError: null,
    revoked: false,
    refresh: vi.fn(),
    submitKey: vi.fn(),
  };
  machines = hookView({});
});

describe("LicenseCard load error", () => {
  it("names a serialized LicenseError instead of printing it", () => {
    context = { ...context, status: "error", error: '{"code":"storage"}' };
    const html = render();
    expect(html).toContain("license.errors.storage");
    expect(html).not.toContain("{&quot;code&quot;");
  });

  it("never prints a raw backend string, even one that is not a LicenseError", () => {
    context = { ...context, status: "error", error: "Cannot read license file: permission denied" };
    const html = render();
    expect(html).toContain("license.errors.unknown");
    expect(html).not.toContain("Cannot read license file");
  });
});

// The main case since #365: Rust persists the revocation and resolves the edition of a
// revoked key to Free. The card says why, and offers a way out.
describe("LicenseCard revoked key (Free edition)", () => {
  beforeEach(() => {
    context = {
      ...context,
      edition: "free",
      revoked: true,
      info: { ...(context.info as LicenseInfo), revoked: true },
    };
    machines = hookView({}, true);
  });

  it("shows the Free edition, names the revocation once, and offers to buy or enter a key", () => {
    const html = render();
    expect(html).toContain("license.editions.free");
    expect(html.split("license.errors.licenseRevoked")).toHaveLength(2);
    expect(html).toContain("license.purchase");
    expect(html).toContain("license.enterKey");
  });

  it("shows no expiry date: it would read as a date until which the key works", () => {
    const html = render();
    expect(html).not.toContain("license.expiresAt");
    expect(html).not.toContain("license.noExpiry");
    expect(html).not.toContain("2036-09-26");
  });

  it("shows neither the Machines section nor the edition's green check", () => {
    const html = render();
    expect(html).not.toContain("license.machines.title");
    expect(html).not.toContain("license.activate");
    expect(html).not.toContain("lucide-circle-check-big");
  });

  it("keeps the expiry date of a key that is not revoked", () => {
    context = {
      ...context,
      edition: "base",
      revoked: false,
      info: { ...(context.info as LicenseInfo), revoked: false },
    };
    machines = hookView({});
    const html = render();
    expect(html).toContain("license.expiresAt");
    expect(html).toContain("2036-09-26");
    expect(html).not.toContain("license.errors.licenseRevoked");
  });
});

// The corner that keeps a revoked key under a paid edition: Premium coming from the
// Maximus account while a revoked key is stored. The Machines section is then still shown.
describe("LicenseCard revoked key under an account Premium", () => {
  beforeEach(() => {
    context = {
      ...context,
      edition: "premium",
      revoked: true,
      info: { ...(context.info as LicenseInfo), revoked: true },
    };
  });

  it("names the revocation at card level with the list closed, and blocks Activate", () => {
    machines = hookView({ activation: notActivated }, true);
    const html = render();
    expect(html).toContain("license.errors.licenseRevoked");
    expect(html).toContain("license.activate");
    expect(html).toContain('disabled=""');
  });

  it("keeps Activate live without a revocation", () => {
    machines = hookView({ activation: notActivated });
    expect(render()).not.toContain('disabled=""');
  });

  it("swaps the edition's green check for an alert", () => {
    // Machine not activated: the "Activated" badge carries the same check icon.
    machines = hookView({ activation: notActivated }, true);
    expect(render()).not.toContain("lucide-circle-check-big");

    machines = hookView({ activation: notActivated });
    expect(render()).toContain("lucide-circle-check-big");
  });

  it("hides the Activated badge: the server deactivated every machine of a revoked key", () => {
    const activated = { is_activated: true };
    machines = hookView({ activation: activated }, true);
    expect(render()).not.toContain("license.machines.activated");

    machines = hookView({ activation: activated });
    expect(render()).toContain("license.machines.activated");
  });

  it("does not repeat the revocation under Machines", () => {
    const revokedError = parseLicenseError('{"code":"license_revoked"}');
    machines = hookView(
      { activation: notActivated, activationError: revokedError, listOpen: true, listError: revokedError },
      true,
    );
    expect(render().split("license.errors.licenseRevoked")).toHaveLength(2);
  });
});

describe("LicenseCard machines", () => {
  it("keeps the other errors visible under Machines", () => {
    // Only the revocation moves to card level: the machine-limit message of the D2 path
    // (#270) and a failed list load still show where they happen.
    machines = hookView({
      activation: notActivated,
      activationError: parseLicenseError('{"code":"machine_limit_reached"}'),
    });
    expect(render()).toContain("license.errors.machineLimitReached");

    machines = hookView({ listOpen: true, listError: parseLicenseError('{"code":"network"}') });
    expect(render()).toContain("license.errors.network");
  });

  it("counts the activated machines against the key's limit", () => {
    machines = hookView(loadedList([machine("a"), machine("b")]));
    expect(render()).toContain("license.machines.count[count=2,limit=3]");
  });

  it("shows no count without a stored key (account Premium)", () => {
    context = { ...context, edition: "premium", info: null };
    machines = hookView(loadedList([machine("a")]));
    expect(render()).not.toContain("license.machines.count");
  });

  // The backend decides which rows name this machine (#350): it knows both forms of the
  // identifier, the webview knows neither.
  const THIS_MACHINE = "(license.machines.thisMachine)";
  /** The row of `id`: from its host name up to its Deactivate button. */
  const rowOf = (html: string, id: string) => {
    const start = html.indexOf(`host-${id}`);
    expect(start).toBeGreaterThan(-1);
    return html.slice(start, html.indexOf("license.machines.deactivate", start));
  };

  it("marks the row the backend flags as this machine, and only that row", () => {
    machines = hookView(loadedList([machine("a"), machine("b", true), machine("c")]));
    const html = render();
    expect(rowOf(html, "b")).toContain(THIS_MACHINE);
    expect(rowOf(html, "a")).not.toContain(THIS_MACHINE);
    expect(rowOf(html, "c")).not.toContain(THIS_MACHINE);
    expect(html.split(THIS_MACHINE)).toHaveLength(2);
  });

  it("marks every flagged row: an old activation of this machine next to its new one", () => {
    machines = hookView(loadedList([machine("old", true), machine("new", true), machine("c")]));
    expect(render().split(THIS_MACHINE)).toHaveLength(3);
  });

  it("marks no row when none is flagged, whatever the activation status", () => {
    for (const activation of [null, notActivated, { is_activated: true }]) {
      machines = hookView({ ...loadedList([machine("a"), machine("b")]), activation });
      expect(render()).not.toContain(THIS_MACHINE);
    }
    // And the other way round: a flagged row is marked without any activation status.
    machines = hookView({ ...loadedList([machine("a", true)]), activation: null });
    expect(render()).toContain(THIS_MACHINE);
  });

  it("lets an empty list say so on its own line", () => {
    machines = hookView(loadedList([]));
    const html = render();
    expect(html).toContain("license.machines.noMachines");
    expect(html).not.toContain("license.machines.count");
  });

  it("marks this machine as not activated next to Activate", () => {
    machines = hookView({ activation: notActivated });
    const html = render();
    expect(html).toContain("license.machines.notActivated");
    expect(html).toContain("license.activate");
  });

  it("locks key entry while an activation runs, and Activate while a key is stored", () => {
    // Either order would leave the previous key's token next to the new key (#364 review).
    const enterKeyDisabled = /<button[^>]*disabled=""[^>]*>license\.enterKey<\/button>/;
    const activateDisabled = /<button[^>]*disabled=""[^>]*>license\.activate<\/button>/;

    machines = hookView({ activation: notActivated, activating: true });
    expect(render()).toMatch(enterKeyDisabled);

    machines = hookView({ activation: notActivated });
    context = { ...context, validating: true };
    expect(render()).toMatch(activateDisabled);

    context = { ...context, validating: false };
    const idle = render();
    expect(idle).not.toMatch(enterKeyDisabled);
    expect(idle).not.toMatch(activateDisabled);
  });

  it("labels the buttons while an activation or a deactivation runs", () => {
    machines = hookView({ activation: notActivated, activating: true });
    expect(render()).toContain("license.machines.activating");

    machines = hookView({ ...loadedList([machine("a")]), deactivatingId: "a" });
    expect(render()).toContain("license.machines.deactivating");
  });
});

describe("LicenseCard dates", () => {
  it("shows no expiry date for a 100-year key", () => {
    context = {
      ...context,
      info: { ...(context.info as object), expires_at: nowS() + 36525 * DAY_S },
    };
    const html = render();
    expect(html).toContain("license.noExpiry");
    expect(html).not.toContain("license.expiresAt");
  });

  it.each([
    ["fr", "fr-CA"],
    ["en", "en-CA"],
  ])("formats every date for the app language (%s → %s)", (lng, locale) => {
    language = lng;
    machines = hookView(loadedList([machine("a")]));
    const spy = vi.spyOn(Date.prototype, "toLocaleDateString");
    try {
      const html = render();
      const locales = spy.mock.calls.map((call) => call[0]);
      // The expiry date and the machine's activation date.
      expect(locales).toHaveLength(2);
      expect(locales).toEqual([locale, locale]);
      expect(html).toContain("license.expiresAt");
      expect(html).toContain("2036-09-26");
      expect(html).toContain("2026-09-01");
    } finally {
      spy.mockRestore();
    }
  });
});

describe("LicenseCard key change", () => {
  it("remounts for another key, so the previous key's activation and machines are dropped", () => {
    const first = LicenseCard() as ReactElement;
    expect(first.key).toBe(licenseIdentity(context.info as LicenseInfo));

    context = { ...context, info: { ...(context.info as LicenseInfo), issued_at: 1 } };
    const second = LicenseCard() as ReactElement;
    expect(second.key).not.toBe(first.key);
  });
});