import { describe, it, expect } from 'vitest'
import { buildTestApp, setupAdmin, getCookie, auth, loginAs } from './helpers.js'

describe('auth routes', () => {
  it('setup creates admin when no users exist, then is closed', async () => {
    const app = await buildTestApp()
    const status = await app.inject({ method: 'GET', url: '/api/setup' })
    expect(status.json()).toEqual({ needed: true })

    const cookie = await setupAdmin(app)

    const me = await app.inject({ method: 'GET', url: '/api/me', ...auth(cookie) })
    expect(me.statusCode).toBe(200)
    expect(me.json()).toEqual({ user: { id: 1, username: 'admin', isAdmin: true } })

    const again = await app.inject({
      method: 'POST',
      url: '/api/setup',
      payload: { username: 'x', password: 'password123' },
    })
    expect(again.statusCode).toBe(403)
    await app.close()
  })

  it('setup validates input', async () => {
    const app = await buildTestApp()
    const bad = await app.inject({
      method: 'POST',
      url: '/api/setup',
      payload: { username: 'ab', password: 'short' },
    })
    expect(bad.statusCode).toBe(400)
    await app.close()
  })

  it('login and logout', async () => {
    const app = await buildTestApp()
    await setupAdmin(app)
    const login = await app.inject({
      method: 'POST',
      url: '/api/login',
      payload: { username: 'admin', password: 'adminpass123' },
    })
    expect(login.statusCode).toBe(200)
    const cookie = getCookie(login)

    const me = await app.inject({ method: 'GET', url: '/api/me', ...auth(cookie) })
    expect(me.statusCode).toBe(200)

    await app.inject({ method: 'POST', url: '/api/logout', ...auth(cookie) })
    const after = await app.inject({ method: 'GET', url: '/api/me', ...auth(cookie) })
    expect(after.statusCode).toBe(401)
    await app.close()
  })

  it('login rejects wrong password', async () => {
    const app = await buildTestApp()
    await setupAdmin(app)
    const res = await app.inject({
      method: 'POST',
      url: '/api/login',
      payload: { username: 'admin', password: 'wrongpass123' },
    })
    expect(res.statusCode).toBe(401)
    await app.close()
  })

  it('protected route requires auth', async () => {
    const app = await buildTestApp()
    const res = await app.inject({ method: 'GET', url: '/api/me' })
    expect(res.statusCode).toBe(401)
    await app.close()
  })

  it('re-login invalidates the previous session', async () => {
    const app = await buildTestApp()
    await setupAdmin(app)
    const first = await app.inject({
      method: 'POST',
      url: '/api/login',
      payload: { username: 'admin', password: 'adminpass123' },
    })
    const firstCookie = getCookie(first)

    const second = await app.inject({
      method: 'POST',
      url: '/api/login',
      ...auth(firstCookie),
      payload: { username: 'admin', password: 'adminpass123' },
    })
    expect(second.statusCode).toBe(200)

    const oldStale = await app.inject({ method: 'GET', url: '/api/me', ...auth(firstCookie) })
    expect(oldStale.statusCode).toBe(401)

    const newCookie = getCookie(second)
    const fresh = await app.inject({ method: 'GET', url: '/api/me', ...auth(newCookie) })
    expect(fresh.statusCode).toBe(200)
    await app.close()
  })
})

describe('user admin', () => {
  async function adminApp() {
    const app = await buildTestApp()
    const cookie = await setupAdmin(app)
    return { app, cookie }
  }

  it('admin creates a user and lists users', async () => {
    const { app, cookie } = await adminApp()
    const created = await app.inject({
      method: 'POST',
      url: '/api/users',
      ...auth(cookie),
      payload: { username: 'bob', password: 'bobpass123' },
    })
    expect(created.statusCode).toBe(200)
    expect(created.json()).toEqual({ id: 2, username: 'bob', isAdmin: false })

    const list = await app.inject({ method: 'GET', url: '/api/users', ...auth(cookie) })
    expect(list.json().users.map((u: { username: string }) => u.username)).toEqual(['admin', 'bob'])
    await app.close()
  })

  it('non-admin cannot list or create users', async () => {
    const { app, cookie } = await adminApp()
    const bobCookie = await loginAs(app, cookie, 'bob', 'bobpass123')
    const list = await app.inject({ method: 'GET', url: '/api/users', ...auth(bobCookie) })
    expect(list.statusCode).toBe(403)
    const create = await app.inject({
      method: 'POST',
      url: '/api/users',
      ...auth(bobCookie),
      payload: { username: 'eve', password: 'evepass123' },
    })
    expect(create.statusCode).toBe(403)
    await app.close()
  })

  it('cannot delete self; deleting another user works and cascades settings', async () => {
    const { app, cookie } = await adminApp()
    await loginAs(app, cookie, 'bob', 'bobpass123')
    const settingsCount = () =>
      (app.db.prepare('SELECT COUNT(*) AS n FROM settings WHERE user_id = 2').get() as { n: number }).n
    const sessionsCount = () =>
      (app.db.prepare('SELECT COUNT(*) AS n FROM sessions WHERE user_id = 2').get() as { n: number }).n
    expect(settingsCount()).toBe(1)
    expect(sessionsCount()).toBe(1)
    const selfDelete = await app.inject({ method: 'DELETE', url: '/api/users/1', ...auth(cookie) })
    expect(selfDelete.statusCode).toBe(400)

    const del = await app.inject({ method: 'DELETE', url: '/api/users/2', ...auth(cookie) })
    expect(del.statusCode).toBe(200)
    expect(settingsCount()).toBe(0)
    expect(sessionsCount()).toBe(0)
    const list = await app.inject({ method: 'GET', url: '/api/users', ...auth(cookie) })
    expect(list.json().users).toHaveLength(1)
    await app.close()
  })

  it('rejects duplicate username', async () => {
    const { app, cookie } = await adminApp()
    await app.inject({
      method: 'POST',
      url: '/api/users',
      ...auth(cookie),
      payload: { username: 'bob', password: 'bobpass123' },
    })
    const again = await app.inject({
      method: 'POST',
      url: '/api/users',
      ...auth(cookie),
      payload: { username: 'bob', password: 'otherpass123' },
    })
    expect(again.statusCode).toBe(409)
    await app.close()
  })
})