import { mkdtempSync, readJsonSync, rmSync } from 'fs-extra'
import { tmpdir } from 'os'
import { join } from 'path'
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'

const mocks = vi.hoisted(() => ({
  capability: { getPersonalWechatSendCapability: vi.fn() },
  sender: { send: vi.fn() }
}))

vi.mock('electron', () => ({ app: { getPath: () => '/tmp/tracememo-gateway-default' } }))
vi.mock('../../src/main/services/personal-wechat-capability-service', () => ({
  personalWechatCapabilityService: mocks.capability
}))
vi.mock('../../src/main/services/personal-wechat-send-service', () => ({
  personalWechatSendService: mocks.sender
}))

import { WechatActionGateway } from '../../src/main/services/wechat-action-gateway'
import type { PersonalWechatSendCapability } from '../../src/shared/personal-wechat'
import type { WechatActionResult } from '../../src/shared/wechat-action'

const readyCapability: PersonalWechatSendCapability = {
  supported: true,
  ready: true,
  status: 'ready',
  capabilities: { text: true, image: true, voice: true },
  senderStatus: {} as never,
  message: 'ready'
}

describe('WechatActionGateway', () => {
  const directories: string[] = []

  beforeEach(() => {
    mocks.capability.getPersonalWechatSendCapability.mockReset().mockResolvedValue(readyCapability)
    mocks.sender.send.mockReset().mockResolvedValue({ success: true, status: {} })
  })

  afterEach(() => {
    while (directories.length) rmSync(directories.pop()!, { recursive: true, force: true })
  })

  function createGateway(): WechatActionGateway {
    const userData = mkdtempSync(join(tmpdir(), 'tracememo-wechat-action-'))
    directories.push(userData)
    return new WechatActionGateway({ getUserDataPath: () => userData })
  }

  function memberAction(
    gateway: WechatActionGateway,
    roomId = 'room@chatroom'
  ): Promise<WechatActionResult> {
    gateway.registerMemberEvent({ id: 'event-1', roomId: 'room@chatroom' })
    return gateway.execute({
      origin: 'member_monitor',
      purpose: 'member_left_notification',
      triggerType: 'automation',
      sourceId: 'event-1',
      recipient: { type: 'group', id: roomId },
      content: { type: 'text', text: '张三已退出群聊' }
    })
  }

  it('allows a valid member action, sends once, and writes an audit record', async () => {
    const userData = mkdtempSync(join(tmpdir(), 'tracememo-wechat-action-'))
    directories.push(userData)
    const gateway = new WechatActionGateway({ getUserDataPath: () => userData })
    const result = await memberAction(gateway)

    expect(result).toMatchObject({ status: 'sent', decision: 'allow' })
    expect(mocks.sender.send).toHaveBeenCalledOnce()
    expect(mocks.sender.send).toHaveBeenCalledWith({
      type: 'text',
      to: 'room@chatroom',
      isGroup: true,
      text: '张三已退出群聊'
    })
    const audit = readJsonSync(join(userData, 'actions', 'wechat-actions.json'))
    expect(audit).toEqual([
      expect.objectContaining({
        purpose: 'member_left_notification',
        recipientId: 'room@chatroom',
        sendStatus: 'sent',
        decision: 'allow',
        contentPreview: '张三已退出群聊'
      })
    ])
  })

  it('deduplicates the same member event across repeated execution calls', async () => {
    const gateway = createGateway()
    const first = await memberAction(gateway)
    const second = await memberAction(gateway)

    expect(second.actionId).toBe(first.actionId)
    expect(mocks.sender.send).toHaveBeenCalledOnce()
  })

  it('blocks a recipient outside the source group', async () => {
    const gateway = createGateway()
    const result = await memberAction(gateway, 'other@chatroom')

    expect(result).toMatchObject({
      status: 'blocked',
      decision: 'block',
      errorCode: 'RECIPIENT_SCOPE_VIOLATION'
    })
    expect(mocks.sender.send).not.toHaveBeenCalled()
  })

  it('blocks unknown automation purposes before checking capability', async () => {
    const gateway = createGateway()
    const result = await gateway.execute({
      origin: 'unknown',
      purpose: 'arbitrary_message',
      triggerType: 'automation',
      recipient: { type: 'group', id: 'room@chatroom' },
      content: { type: 'text', text: '不应自动发送' }
    })

    expect(result).toMatchObject({
      status: 'blocked',
      decision: 'block',
      errorCode: 'ACTION_NOT_ALLOWED'
    })
    expect(mocks.capability.getPersonalWechatSendCapability).not.toHaveBeenCalled()
    expect(mocks.sender.send).not.toHaveBeenCalled()
  })

  it('returns INVALID_REQUEST for malformed input without throwing from audit handling', async () => {
    const gateway = createGateway()
    const result = await gateway.execute({
      origin: 'member_monitor',
      purpose: 'member_left_notification',
      triggerType: 'automation',
      recipient: { type: 'group', id: 'room@chatroom' }
    } as never)

    expect(result).toMatchObject({
      status: 'blocked',
      decision: 'block',
      errorCode: 'INVALID_REQUEST'
    })
  })

  it('returns INVALID_RECIPIENT when the recipient id is missing', async () => {
    const gateway = createGateway()
    const result = await gateway.execute({
      origin: 'member_monitor',
      purpose: 'member_left_notification',
      triggerType: 'automation',
      sourceId: 'event-1',
      recipient: { type: 'group', id: '' },
      content: { type: 'text', text: '张三已退出群聊' }
    })

    expect(result).toMatchObject({
      status: 'blocked',
      decision: 'block',
      errorCode: 'INVALID_RECIPIENT'
    })
    expect(mocks.sender.send).not.toHaveBeenCalled()
  })

  it('does not accept an event lookup for a different source id', async () => {
    const userData = mkdtempSync(join(tmpdir(), 'tracememo-wechat-action-'))
    directories.push(userData)
    const gateway = new WechatActionGateway({
      getUserDataPath: () => userData,
      getMemberEvent: () => ({ id: 'different-event', roomId: 'room@chatroom' })
    })
    const result = await gateway.execute({
      origin: 'member_monitor',
      purpose: 'member_left_notification',
      triggerType: 'automation',
      sourceId: 'event-1',
      recipient: { type: 'group', id: 'room@chatroom' },
      content: { type: 'text', text: '张三已退出群聊' }
    })

    expect(result).toMatchObject({
      status: 'blocked',
      decision: 'block',
      errorCode: 'INVALID_REQUEST'
    })
    expect(mocks.sender.send).not.toHaveBeenCalled()
  })

  it('returns a structured capability failure without sending', async () => {
    const gateway = createGateway()
    mocks.capability.getPersonalWechatSendCapability.mockResolvedValueOnce({
      ...readyCapability,
      ready: false,
      capabilities: { text: false, image: false, voice: false },
      message: '当前微信发送能力不可用'
    })
    const result = await memberAction(gateway)

    expect(result).toMatchObject({
      status: 'failed',
      decision: 'allow',
      errorCode: 'SEND_CAPABILITY_UNAVAILABLE'
    })
    expect(mocks.sender.send).not.toHaveBeenCalled()
  })

  it('converts a transport throw into SEND_FAILED', async () => {
    const gateway = createGateway()
    mocks.sender.send.mockRejectedValueOnce(new Error('connector timeout'))
    const result = await memberAction(gateway)

    expect(result).toMatchObject({
      status: 'failed',
      decision: 'allow',
      errorCode: 'SEND_FAILED',
      reason: 'connector timeout'
    })
  })
})