import { beforeEach, describe, expect, it, vi } from "vitest"

const mocks = vi.hoisted(() => ({
  authMock: vi.fn(),
  getUserProfileMock: vi.fn(),
  redirectMock: vi.fn((target: string) => {
    throw new Error(`REDIRECT:${target}`)
  }),
}))

vi.mock("@/auth", () => ({
  auth: mocks.authMock,
}))

vi.mock("@/modules/users/data-access", () => ({
  getUserProfile: mocks.getUserProfileMock,
}))

vi.mock("next/navigation", () => ({
  redirect: mocks.redirectMock,
}))

import DashboardPage from "@/app/(dashboard)/dashboard/page"

describe("dashboard route dispatcher", () => {
  beforeEach(() => {
    vi.resetAllMocks()
    mocks.redirectMock.mockImplementation((target: string) => {
      throw new Error(`REDIRECT:${target}`)
    })
  })

  it("redirects to login when session is missing", async () => {
    mocks.authMock.mockResolvedValue(null)
    await expect(DashboardPage()).rejects.toThrow("REDIRECT:/login")
  })

  it("redirects to login when user profile is missing", async () => {
    mocks.authMock.mockResolvedValue({ user: { id: "u_1" } })
    mocks.getUserProfileMock.mockResolvedValue(null)
    await expect(DashboardPage()).rejects.toThrow("REDIRECT:/login")
  })

  it("redirects admin to admin dashboard", async () => {
    mocks.authMock.mockResolvedValue({ user: { id: "u_admin" } })
    mocks.getUserProfileMock.mockResolvedValue({ role: "admin" })
    await expect(DashboardPage()).rejects.toThrow("REDIRECT:/admin/dashboard")
  })

  it("redirects student to student dashboard", async () => {
    mocks.authMock.mockResolvedValue({ user: { id: "u_student" } })
    mocks.getUserProfileMock.mockResolvedValue({ role: "student" })
    await expect(DashboardPage()).rejects.toThrow("REDIRECT:/student/dashboard")
  })

  it("redirects parent to parent dashboard", async () => {
    mocks.authMock.mockResolvedValue({ user: { id: "u_parent" } })
    mocks.getUserProfileMock.mockResolvedValue({ role: "parent" })
    await expect(DashboardPage()).rejects.toThrow("REDIRECT:/parent/dashboard")
  })

  it("falls back to student dashboard when role is unknown", async () => {
    mocks.authMock.mockResolvedValue({ user: { id: "u_teacher" } })
    mocks.getUserProfileMock.mockResolvedValue({ role: "" })
    await expect(DashboardPage()).rejects.toThrow("REDIRECT:/student/dashboard")
  })
})