import { fireEvent, screen, waitFor } from "@testing-library/react"
import userEvent from "@testing-library/user-event"
import { rest } from "msw"
import { Language } from "../../components/SignInForm/SignInForm"
import { history, render } from "../../testHelpers/renderHelpers"
import { server } from "../../testHelpers/server"
import { LoginPage } from "./LoginPage"

describe("LoginPage", () => {
  beforeEach(() => {
    history.replace("/login")
    // appear logged out
    server.use(
      rest.get("/api/v2/users/me", (req, res, ctx) => {
        return res(ctx.status(401), ctx.json({ message: "no user here" }))
      }),
    )
  })

  it("renders the sign-in form", async () => {
    // When
    render(<LoginPage />)

    // Then
    await screen.findByText(Language.passwordSignIn)
  })

  it("shows an error message if SignIn fails", async () => {
    // Given
    server.use(
      // Make login fail
      rest.post("/api/v2/users/login", async (req, res, ctx) => {
        return res(ctx.status(500), ctx.json({ message: Language.errorMessages.authError }))
      }),
    )

    // When
    render(<LoginPage />)
    const email = screen.getByLabelText(Language.emailLabel)
    const password = screen.getByLabelText(Language.passwordLabel)
    await userEvent.type(email, "test@coder.com")
    await userEvent.type(password, "password")
    // Click sign-in
    const signInButton = await screen.findByText(Language.passwordSignIn)
    fireEvent.click(signInButton)

    // Then
    const errorMessage = await screen.findByText(Language.errorMessages.authError)
    expect(errorMessage).toBeDefined()
    expect(history.location.pathname).toEqual("/login")
  })

  it("shows an error if fetching auth methods fails", async () => {
    // Given
    const apiErrorMessage = "Unable to fetch methods"
    server.use(
      // Make login fail
      rest.get("/api/v2/users/authmethods", async (req, res, ctx) => {
        return res(ctx.status(500), ctx.json({ message: apiErrorMessage }))
      }),
    )

    // When
    render(<LoginPage />)

    // Then
    const errorMessage = await screen.findByText(apiErrorMessage)
    expect(errorMessage).toBeDefined()
  })

  it("shows github authentication when enabled", async () => {
    // Given
    server.use(
      rest.get("/api/v2/users/authmethods", async (req, res, ctx) => {
        return res(
          ctx.status(200),
          ctx.json({
            password: true,
            github: true,
          }),
        )
      }),
    )

    // When
    render(<LoginPage />)

    // Then
    await screen.findByText(Language.passwordSignIn)
    await screen.findByText(Language.githubSignIn)
  })

  it("redirects to the setup page if there is no first user", async () => {
    // Given
    server.use(
      rest.get("/api/v2/users/first", async (req, res, ctx) => {
        return res(ctx.status(404))
      }),
    )

    // When
    render(<LoginPage />)

    // Then
    await waitFor(() => expect(history.location.pathname).toEqual("/setup"))
  })
})