import type { Job } from 'bullmq'
import { beforeEach, describe, expect, it, vi } from 'vitest'
import { TASK_TYPE, type TaskJobData } from '@/lib/task/types'

type WorkerProcessor = (job: Job<TaskJobData>) => Promise<unknown>

type PanelRow = {
  id: string
  videoUrl: string | null
  imageUrl: string | null
  videoPrompt: string | null
  description: string | null
  firstLastFramePrompt: string | null
}

const workerState = vi.hoisted(() => ({
  processor: null as WorkerProcessor | null,
}))

const reportTaskProgressMock = vi.hoisted(() => vi.fn(async () => undefined))
const withTaskLifecycleMock = vi.hoisted(() =>
  vi.fn(async (job: Job<TaskJobData>, handler: WorkerProcessor) => await handler(job)),
)

const utilsMock = vi.hoisted(() => ({
  assertTaskActive: vi.fn(async () => undefined),
  getProjectModels: vi.fn(async () => ({ videoRatio: '16:9' })),
  resolveLipSyncVideoSource: vi.fn(async () => 'https://provider.example/lipsync.mp4'),
  resolveVideoSourceFromGeneration: vi.fn(async () => 'https://provider.example/video.mp4'),
  toSignedUrlIfCos: vi.fn((url: string | null) => (url ? `https://signed.example/${url}` : null)),
  uploadVideoSourceToCos: vi.fn(async () => 'cos/lip-sync/video.mp4'),
}))

const prismaMock = vi.hoisted(() => ({
  novelPromotionPanel: {
    findUnique: vi.fn(),
    findFirst: vi.fn(),
    update: vi.fn(async () => undefined),
  },
  novelPromotionVoiceLine: {
    findUnique: vi.fn(),
  },
}))

vi.mock('bullmq', () => ({
  Queue: class {
    constructor(_name: string) {}

    async add() {
      return { id: 'job-1' }
    }

    async getJob() {
      return null
    }
  },
  Worker: class {
    constructor(_name: string, processor: WorkerProcessor) {
      workerState.processor = processor
    }
  },
}))

vi.mock('@/lib/redis', () => ({ queueRedis: {} }))
vi.mock('@/lib/workers/shared', () => ({
  reportTaskProgress: reportTaskProgressMock,
  withTaskLifecycle: withTaskLifecycleMock,
}))
vi.mock('@/lib/workers/utils', () => utilsMock)
vi.mock('@/lib/prisma', () => ({ prisma: prismaMock }))
vi.mock('@/lib/media/outbound-image', () => ({
  normalizeToBase64ForGeneration: vi.fn(async (input: string) => input),
}))
vi.mock('@/lib/model-capabilities/lookup', () => ({
  resolveBuiltinCapabilitiesByModelKey: vi.fn(() => ({ video: { firstlastframe: true } })),
}))
vi.mock('@/lib/model-config-contract', () => ({
  parseModelKeyStrict: vi.fn(() => ({ provider: 'fal' })),
}))
vi.mock('@/lib/api-config', () => ({
  getProviderConfig: vi.fn(async () => ({ apiKey: 'api-key' })),
}))

function buildPanel(overrides?: Partial<PanelRow>): PanelRow {
  return {
    id: 'panel-1',
    videoUrl: 'cos/base-video.mp4',
    imageUrl: 'cos/panel-image.png',
    videoPrompt: 'panel prompt',
    description: 'panel description',
    firstLastFramePrompt: null,
    ...(overrides || {}),
  }
}

function buildJob(params: {
  type: TaskJobData['type']
  payload?: Record<string, unknown>
  targetType?: string
  targetId?: string
}): Job<TaskJobData> {
  return {
    data: {
      taskId: 'task-1',
      type: params.type,
      locale: 'zh',
      projectId: 'project-1',
      episodeId: 'episode-1',
      targetType: params.targetType ?? 'NovelPromotionPanel',
      targetId: params.targetId ?? 'panel-1',
      payload: params.payload ?? {},
      userId: 'user-1',
    },
  } as unknown as Job<TaskJobData>
}

describe('worker video processor behavior', () => {
  beforeEach(async () => {
    vi.clearAllMocks()
    workerState.processor = null

    prismaMock.novelPromotionPanel.findUnique.mockResolvedValue(buildPanel())
    prismaMock.novelPromotionPanel.findFirst.mockResolvedValue(buildPanel())
    prismaMock.novelPromotionVoiceLine.findUnique.mockResolvedValue({
      id: 'line-1',
      audioUrl: 'cos/line-1.mp3',
    })

    const mod = await import('@/lib/workers/video.worker')
    mod.createVideoWorker()
  })

  it('VIDEO_PANEL: 缺少 payload.videoModel 时显式失败', async () => {
    const processor = workerState.processor
    expect(processor).toBeTruthy()

    const job = buildJob({
      type: TASK_TYPE.VIDEO_PANEL,
      payload: {},
    })

    await expect(processor!(job)).rejects.toThrow('VIDEO_MODEL_REQUIRED: payload.videoModel is required')
  })

  it('LIP_SYNC: 缺少 panel 时显式失败', async () => {
    const processor = workerState.processor
    expect(processor).toBeTruthy()

    prismaMock.novelPromotionPanel.findUnique.mockResolvedValueOnce(null)
    const job = buildJob({
      type: TASK_TYPE.LIP_SYNC,
      payload: { voiceLineId: 'line-1' },
      targetId: 'panel-missing',
    })

    await expect(processor!(job)).rejects.toThrow('Lip-sync panel not found')
  })

  it('LIP_SYNC: 正常路径写回 lipSyncVideoUrl 并清理 lipSyncTaskId', async () => {
    const processor = workerState.processor
    expect(processor).toBeTruthy()

    const job = buildJob({
      type: TASK_TYPE.LIP_SYNC,
      payload: {
        voiceLineId: 'line-1',
        lipSyncModel: 'fal::lipsync-model',
      },
      targetId: 'panel-1',
    })

    const result = await processor!(job) as { panelId: string; voiceLineId: string; lipSyncVideoUrl: string }
    expect(result).toEqual({
      panelId: 'panel-1',
      voiceLineId: 'line-1',
      lipSyncVideoUrl: 'cos/lip-sync/video.mp4',
    })

    expect(utilsMock.resolveLipSyncVideoSource).toHaveBeenCalledWith(
      expect.anything(),
      expect.objectContaining({
        userId: 'user-1',
        modelKey: 'fal::lipsync-model',
      }),
    )

    expect(prismaMock.novelPromotionPanel.update).toHaveBeenCalledWith({
      where: { id: 'panel-1' },
      data: {
        lipSyncVideoUrl: 'cos/lip-sync/video.mp4',
        lipSyncTaskId: null,
      },
    })
  })

  it('未知任务类型: 显式报错', async () => {
    const processor = workerState.processor
    expect(processor).toBeTruthy()

    const unsupportedJob = buildJob({
      type: TASK_TYPE.AI_CREATE_CHARACTER,
    })

    await expect(processor!(unsupportedJob)).rejects.toThrow('Unsupported video task type')
  })
})