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

import { hasSession, loadSession, signIn, signOut } from "./session"

describe("session", () => {
  beforeEach(() => {
    localStorage.clear()
  })

  it("starts unauthenticated", () => {
    expect(loadSession()).toBeNull()
    expect(hasSession()).toBe(false)
  })

  it("rejects empty credentials", async () => {
    await expect(signIn("", "")).rejects.toThrow(/required/i)
    await expect(signIn("not-an-email", "pw")).rejects.toThrow(/valid email/i)
    expect(hasSession()).toBe(false)
  })

  it("creates a session on sign-in and clears on sign-out", async () => {
    const session = await signIn("alice@example.com", "hunter2")
    expect(session.email).toBe("alice@example.com")
    expect(session.token).toMatch(/^dev-/)
    expect(hasSession()).toBe(true)

    signOut()
    expect(loadSession()).toBeNull()
    expect(hasSession()).toBe(false)
  })
})