import { beforeEach, describe, expect, test, vi } from "vitest";
import type { ActionFunctionArgs, LoaderFunctionArgs } from "@remix-run/node";

const mocks = vi.hoisted(() => ({
  checkout: vi.fn(),
  unauthenticatedAdmin: vi.fn(),
  runActivityCheck: vi.fn(),
}));

vi.mock("../app/shopify.server", () => ({
  authenticate: {
    public: {
      checkout: mocks.checkout,
    },
  },
  unauthenticated: {
    admin: mocks.unauthenticatedAdmin,
  },
}));

vi.mock("../app/services/activity.server", () => ({
  runActivityCheck: mocks.runActivityCheck,
}));

vi.mock("../app/services/config.server", () => ({
  getActivityConfig: vi.fn(),
}));

vi.mock("../app/services/dreame-client.server", () => ({
  callPush: vi.fn(),
  callStatus: vi.fn(),
}));

vi.mock("../app/services/idempotency.server", () => ({
  findSuccessfulPush: vi.fn(),
  recordSuccessfulPush: vi.fn(),
}));

vi.mock("../app/services/logger.server", () => ({
  logActivityPush: vi.fn(),
}));

vi.mock("../app/services/order.server", () => ({
  getOrderDetails: vi.fn(),
}));

function cors(response: Response): Response {
  response.headers.set("X-Cors-Applied", "true");
  return response;
}

async function postAction(body: unknown): Promise<Response> {
  const { action } = await import("../app/routes/api.action.activity.check");
  return action({
    request: new Request("https://app.example.com/api/action/activity/check", {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
      },
      body: JSON.stringify(body),
    }),
    context: {},
    params: {},
  } as ActionFunctionArgs) as Promise<Response>;
}

describe("activity check route", () => {
  beforeEach(() => {
    vi.clearAllMocks();
    mocks.checkout.mockResolvedValue({
      sessionToken: {
        dest: "https://demo.myshopify.com",
      },
      cors,
    });
    mocks.unauthenticatedAdmin.mockResolvedValue({
      admin: {
        graphql: vi.fn(),
      },
    });
    mocks.runActivityCheck.mockResolvedValue({
      success: true,
      redirectUrl: "https://activity.example.com",
      buttonText: "Claim",
    });
  });

  test("wraps success responses with Shopify cors and no-store cache headers", async () => {
    const response = await postAction({
      orderId: "gid://shopify/Order/123",
      orderNumber: "#1001",
      locale: "en",
    });

    expect(response.status).toBe(200);
    expect(response.headers.get("X-Cors-Applied")).toBe("true");
    expect(response.headers.get("Cache-Control")).toContain("no-store");
    await expect(response.json()).resolves.toEqual({
      success: true,
      redirectUrl: "https://activity.example.com",
      buttonText: "Claim",
    });
    expect(mocks.runActivityCheck).toHaveBeenCalledWith(
      expect.objectContaining({
        shop: "demo.myshopify.com",
        orderId: "gid://shopify/Order/123",
      }),
      expect.any(Object),
    );
  });

  test("rejects checkout tokens without a myshopify shop context", async () => {
    mocks.checkout.mockResolvedValue({
      sessionToken: {
        dest: "https://not-shop.example.com",
      },
      cors,
    });

    const response = await postAction({
      orderId: "gid://shopify/Order/123",
    });

    expect(response.status).toBe(401);
    expect(response.headers.get("X-Cors-Applied")).toBe("true");
    expect(response.headers.get("Cache-Control")).toContain("no-store");
    await expect(response.json()).resolves.toEqual({
      success: false,
      error: {
        code: "INVALID_SHOP_CONTEXT",
        message: "A valid Shopify shop context is required.",
      },
    });
    expect(mocks.unauthenticatedAdmin).not.toHaveBeenCalled();
    expect(mocks.runActivityCheck).not.toHaveBeenCalled();
  });

  test("returns a bad request when orderId is missing", async () => {
    const response = await postAction({
      orderNumber: "#1001",
    });

    expect(response.status).toBe(400);
    expect(response.headers.get("X-Cors-Applied")).toBe("true");
    expect(response.headers.get("Cache-Control")).toContain("no-store");
    await expect(response.json()).resolves.toEqual({
      success: false,
      error: {
        code: "ORDER_ID_REQUIRED",
        message: "orderId is required.",
      },
    });
    expect(mocks.runActivityCheck).not.toHaveBeenCalled();
  });

  test("preserves Shopify authentication failures as HTTP errors", async () => {
    mocks.checkout.mockRejectedValue(new Response("Unauthorized", { status: 401 }));

    const response = await postAction({
      orderId: "gid://shopify/Order/123",
    });

    expect(response.status).toBe(401);
    expect(response.headers.get("Access-Control-Allow-Origin")).toBe("*");
    expect(response.headers.get("Cache-Control")).toContain("no-store");
    expect(await response.text()).toBe("Unauthorized");
    expect(mocks.unauthenticatedAdmin).not.toHaveBeenCalled();
    expect(mocks.runActivityCheck).not.toHaveBeenCalled();
  });

  test("uses Shopify checkout authentication for OPTIONS responses", async () => {
    const { loader } = await import("../app/routes/api.action.activity.check");
    const response = await loader({
      request: new Request("https://app.example.com/api/action/activity/check", {
        method: "OPTIONS",
      }),
      context: {},
      params: {},
    } as LoaderFunctionArgs);

    expect(response.status).toBe(204);
    expect(response.headers.get("X-Cors-Applied")).toBe("true");
    expect(response.headers.get("Cache-Control")).toContain("no-store");
    expect(mocks.checkout).toHaveBeenCalled();
  });
});