// @flow
import TestServer from "fetch-test-server";
import app from "../../app";
import mailer from "../../mailer";
import { buildUser, buildGuestUser, buildTeam } from "../../test/factories";
import { flushdb } from "../../test/support";

const server = new TestServer(app.callback());

jest.mock("../../mailer");

beforeEach(async () => {
  await flushdb();

  // $FlowFixMe – does not understand Jest mocks
  mailer.signin.mockReset();
});
afterAll(() => server.close());

describe("email", () => {
  it("should require email param", async () => {
    const res = await server.post("/auth/email", {
      body: {},
    });
    const body = await res.json();

    expect(res.status).toEqual(400);
    expect(body.error).toEqual("validation_error");
    expect(body.ok).toEqual(false);
  });

  it("should respond with redirect location when user is SSO enabled", async () => {
    const user = await buildUser();

    const res = await server.post("/auth/email", {
      body: { email: user.email },
    });
    const body = await res.json();

    expect(res.status).toEqual(200);
    expect(body.redirect).toMatch("slack");
    expect(mailer.signin).not.toHaveBeenCalled();
  });

  it("should respond with redirect location when user is SSO enabled on another subdomain", async () => {
    process.env.URL = "http://localoutline.com";
    process.env.SUBDOMAINS_ENABLED = "true";

    const user = await buildUser();

    await buildTeam({
      subdomain: "example",
    });

    const res = await server.post("/auth/email", {
      body: { email: user.email },
      headers: { host: "example.localoutline.com" },
    });
    const body = await res.json();

    expect(res.status).toEqual(200);
    expect(body.redirect).toMatch("slack");
    expect(mailer.signin).not.toHaveBeenCalled();
  });

  it("should respond with success when user is not SSO enabled", async () => {
    const user = await buildGuestUser();

    const res = await server.post("/auth/email", {
      body: { email: user.email },
    });
    const body = await res.json();

    expect(res.status).toEqual(200);
    expect(body.success).toEqual(true);
    expect(mailer.signin).toHaveBeenCalled();
  });

  it("should respond with success regardless of whether successful to prevent crawling email logins", async () => {
    const res = await server.post("/auth/email", {
      body: { email: "user@example.com" },
    });
    const body = await res.json();

    expect(res.status).toEqual(200);
    expect(body.success).toEqual(true);
    expect(mailer.signin).not.toHaveBeenCalled();
  });

  describe("with multiple users matching email", () => {
    it("should default to current subdomain with SSO", async () => {
      process.env.URL = "http://localoutline.com";
      process.env.SUBDOMAINS_ENABLED = "true";

      const email = "sso-user@example.org";
      const team = await buildTeam({
        subdomain: "example",
      });

      await buildGuestUser({ email });
      await buildUser({ email, teamId: team.id });

      const res = await server.post("/auth/email", {
        body: { email },
        headers: { host: "example.localoutline.com" },
      });
      const body = await res.json();

      expect(res.status).toEqual(200);
      expect(body.redirect).toMatch("slack");
      expect(mailer.signin).not.toHaveBeenCalled();
    });

    it("should default to current subdomain with guest email", async () => {
      process.env.URL = "http://localoutline.com";
      process.env.SUBDOMAINS_ENABLED = "true";

      const email = "guest-user@example.org";
      const team = await buildTeam({
        subdomain: "example",
      });

      await buildUser({ email });
      await buildGuestUser({ email, teamId: team.id });

      const res = await server.post("/auth/email", {
        body: { email },
        headers: { host: "example.localoutline.com" },
      });
      const body = await res.json();

      expect(res.status).toEqual(200);
      expect(body.success).toEqual(true);
      expect(mailer.signin).toHaveBeenCalled();
    });

    it("should default to custom domain with SSO", async () => {
      const email = "sso-user-2@example.org";
      const team = await buildTeam({
        domain: "docs.mycompany.com",
      });

      await buildGuestUser({ email });
      await buildUser({ email, teamId: team.id });

      const res = await server.post("/auth/email", {
        body: { email },
        headers: { host: "docs.mycompany.com" },
      });
      const body = await res.json();

      expect(res.status).toEqual(200);
      expect(body.redirect).toMatch("slack");
      expect(mailer.signin).not.toHaveBeenCalled();
    });

    it("should default to custom domain with guest email", async () => {
      const email = "guest-user-2@example.org";
      const team = await buildTeam({
        domain: "docs.mycompany.com",
      });

      await buildUser({ email });
      await buildGuestUser({ email, teamId: team.id });

      const res = await server.post("/auth/email", {
        body: { email },
        headers: { host: "docs.mycompany.com" },
      });
      const body = await res.json();

      expect(res.status).toEqual(200);
      expect(body.success).toEqual(true);
      expect(mailer.signin).toHaveBeenCalled();
    });
  });
});
