import { beforeEach, describe, expect, it, vi } from 'vitest'
import { createEvent, mockSuccessReadBody } from './setup'

vi.mock('../server/utils/auth.js', () => ({
  verifyToken: vi.fn(),
  getUserById: vi.fn(),
  hasAnyRole: vi.fn((user, ...roles) => {
    if (!user) return false
    const userRoles = Array.isArray(user.roles) ? user.roles : (user.role ? [user.role] : [])
    return roles.some(r => userRoles.includes(r))
  })
}))

vi.mock('../server/utils/news.js', () => ({
  readNews: vi.fn(),
  saveNews: vi.fn(),
  deleteNews: vi.fn()
}))

const authUtils = await import('../server/utils/auth.js')
const newsUtils = await import('../server/utils/news.js')

import newsGetHandler from '../server/api/news.get.js'
import newsPostHandler from '../server/api/news.post.js'
import newsDeleteHandler from '../server/api/news.delete.js'

describe('News API Endpoints', () => {
  beforeEach(() => {
    vi.clearAllMocks()
  })

  const adminEvent = () => {
    const event = createEvent({ cookies: { auth_token: 'token' } })
    authUtils.verifyToken.mockReturnValue({ id: '1' })
    authUtils.getUserById.mockResolvedValue({ id: '1', roles: ['admin'], name: 'Admin' })
    authUtils.hasAnyRole.mockReturnValue(true)
    return event
  }

  describe('GET /api/news', () => {
    it('verlangt Authentifizierung', async () => {
      const event = createEvent()
      await expect(newsGetHandler(event)).rejects.toMatchObject({ statusCode: 401 })
    })

    it('lehnt ungültiges Token ab', async () => {
      const event = createEvent({ cookies: { auth_token: 'bad' } })
      authUtils.verifyToken.mockReturnValue(null)
      await expect(newsGetHandler(event)).rejects.toMatchObject({ statusCode: 401 })
    })

    it('liefert News nach Datum sortiert (neueste zuerst)', async () => {
      const event = createEvent({ cookies: { auth_token: 'token' } })
      authUtils.verifyToken.mockReturnValue({ id: '1' })
      newsUtils.readNews.mockResolvedValue([
        { id: 'a', title: 'Alt', created: '2024-01-01' },
        { id: 'b', title: 'Neu', created: '2025-06-01' }
      ])

      const result = await newsGetHandler(event)

      expect(result.success).toBe(true)
      expect(result.news[0].id).toBe('b')
      expect(result.news[1].id).toBe('a')
    })
  })

  describe('POST /api/news', () => {
    it('verlangt Authentifizierung', async () => {
      const event = createEvent()
      mockSuccessReadBody({})
      await expect(newsPostHandler(event)).rejects.toMatchObject({ statusCode: 401 })
    })

    it('lehnt ungültiges Token ab', async () => {
      const event = createEvent({ cookies: { auth_token: 'bad' } })
      authUtils.verifyToken.mockReturnValue(null)
      mockSuccessReadBody({ title: 'T', content: 'C' })
      await expect(newsPostHandler(event)).rejects.toMatchObject({ statusCode: 401 })
    })

    it('verlangt Admin- oder Vorstand-Rolle', async () => {
      const event = createEvent({ cookies: { auth_token: 'token' } })
      authUtils.verifyToken.mockReturnValue({ id: '1' })
      authUtils.getUserById.mockResolvedValue({ id: '1', roles: ['mitglied'] })
      authUtils.hasAnyRole.mockReturnValue(false)
      mockSuccessReadBody({ title: 'T', content: 'C' })
      await expect(newsPostHandler(event)).rejects.toMatchObject({ statusCode: 403 })
    })

    it('validiert Pflichtfelder – kein Titel', async () => {
      const event = adminEvent()
      mockSuccessReadBody({ content: 'Nur Inhalt ohne Titel' })
      await expect(newsPostHandler(event)).rejects.toMatchObject({ statusCode: 400 })
    })

    it('validiert Pflichtfelder – kein Inhalt', async () => {
      const event = adminEvent()
      mockSuccessReadBody({ title: 'Nur Titel' })
      await expect(newsPostHandler(event)).rejects.toMatchObject({ statusCode: 400 })
    })

    it('speichert News erfolgreich', async () => {
      const event = adminEvent()
      newsUtils.saveNews.mockResolvedValue(undefined)
      mockSuccessReadBody({ title: 'Neue Info', content: 'Inhalt hier', isPublic: true })

      const result = await newsPostHandler(event)

      expect(result.success).toBe(true)
      expect(newsUtils.saveNews).toHaveBeenCalledWith(
        expect.objectContaining({ title: 'Neue Info', content: 'Inhalt hier', isPublic: true })
      )
    })

    it('setzt autor auf den angemeldeten Benutzer', async () => {
      const event = adminEvent()
      newsUtils.saveNews.mockResolvedValue(undefined)
      mockSuccessReadBody({ title: 'Titel', content: 'Inhalt' })

      await newsPostHandler(event)

      expect(newsUtils.saveNews).toHaveBeenCalledWith(
        expect.objectContaining({ author: 'Admin' })
      )
    })
  })

  describe('DELETE /api/news', () => {
    it('verlangt Authentifizierung', async () => {
      const event = createEvent()
      await expect(newsDeleteHandler(event)).rejects.toMatchObject({ statusCode: 401 })
    })

    it('verlangt Admin- oder Vorstand-Rolle', async () => {
      const event = createEvent({ cookies: { auth_token: 'token' } })
      authUtils.verifyToken.mockReturnValue({ id: '1' })
      authUtils.getUserById.mockResolvedValue({ id: '1', roles: ['mitglied'] })
      authUtils.hasAnyRole.mockReturnValue(false)
      await expect(newsDeleteHandler(event)).rejects.toMatchObject({ statusCode: 403 })
    })

    it('validiert fehlende News-ID', async () => {
      const event = adminEvent()
      // query ist leer → kein id
      await expect(newsDeleteHandler(event)).rejects.toMatchObject({ statusCode: 400 })
    })

    it('löscht News erfolgreich', async () => {
      const event = adminEvent()
      event.__query = { id: 'abc-123' }
      newsUtils.deleteNews.mockResolvedValue(undefined)

      const result = await newsDeleteHandler(event)

      expect(result.success).toBe(true)
      expect(newsUtils.deleteNews).toHaveBeenCalledWith('abc-123')
    })
  })
})