/*
Copyright 2024-2026 ChatterMate

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

import { describe, it, expect, vi, beforeEach } from 'vitest'
import { mount, VueWrapper } from '@vue/test-utils'
import { nextTick } from 'vue'
import ConversationsView from '../../views/ConversationsView.vue'
import { createPinia, setActivePinia } from 'pinia'

// Mock vue-router (component uses useRoute for deep-link query params)
vi.mock('vue-router', () => ({
  useRoute: () => ({ query: {} }),
  useRouter: () => ({ push: vi.fn(), replace: vi.fn() })
}))

// Mock the chat service
vi.mock('@/services/chat', () => ({
  chatService: {
    getRecentChats: vi.fn(),
    getChatDetail: vi.fn(),
    takeoverChat: vi.fn(),
    reassignChat: vi.fn()
  }
}))

// Mock the components
vi.mock('@/layouts/DashboardLayout.vue', () => ({
  default: {
    name: 'DashboardLayout',
    template: '<div class="dashboard-layout"><slot /></div>'
  }
}))

vi.mock('@/components/conversations/ConversationsList.vue', () => ({
  default: {
    name: 'ConversationsList',
    template: '<div class="conversations-list"></div>',
    props: ['conversations', 'loading', 'error', 'loadedCount', 'totalCount', 'hasMore', 'statusFilter', 'showChatInfo'],
    emits: ['refresh', 'update-filter', 'load-more', 'chat-updated', 'chat-selected', 'clear-unread']
  }
}))

vi.mock('@/components/conversations/ConversationFilters.vue', () => ({
  default: {
    name: 'ConversationFilters',
    template: '<div class="conversation-filters"></div>',
    props: ['showFilters', 'filterValues', 'users', 'agents', 'loadingUsers', 'loadingAgents'],
    emits: ['toggle', 'apply', 'clear', 'update:filterValues']
  }
}))

vi.mock('@/components/conversations/ChatInfoPanel.vue', () => ({
  default: {
    name: 'ChatInfoPanel',
    template: '<div class="chat-info-panel"></div>',
    props: ['chatInfo', 'users'],
    emits: ['close', 'refresh', 'chatUpdated', 'chatClosed']
  }
}))

// Mock API service
vi.mock('@/services/api', () => ({
  default: {
    get: vi.fn().mockResolvedValue({ data: [] }),
    post: vi.fn().mockResolvedValue({ data: {} }),
    put: vi.fn().mockResolvedValue({ data: {} }),
    delete: vi.fn().mockResolvedValue({ data: {} })
  }
}))

// Mock agent service
vi.mock('@/services/agent', () => ({
  agentService: {
    getOrganizationAgents: vi.fn().mockResolvedValue([])
  }
}))

// Import the mocked modules
import { chatService } from '@/services/chat'

describe('ConversationsView', () => {
  let wrapper: VueWrapper

  beforeEach(() => {
    setActivePinia(createPinia())
    vi.clearAllMocks()
  })

  it('renders properly', () => {
    wrapper = mount(ConversationsView)
    expect(wrapper.find('.page-header').exists()).toBe(true)
    expect(wrapper.find('h1').text()).toBe('会话')
  })

  it('shows loading state initially', () => {
    wrapper = mount(ConversationsView)
    const conversationsList = wrapper.findComponent({ name: 'ConversationsList' })
    expect(conversationsList.props('loading')).toBe(true)
  })

  it('loads conversations on mount', async () => {
    const mockConversations = [
      { id: '1', title: 'Chat 1' },
      { id: '2', title: 'Chat 2' }
    ]
    
    ;(chatService.getRecentChats as any).mockResolvedValue(mockConversations)
    
    wrapper = mount(ConversationsView)
    
    // Wait for the mounted hook and async operations to complete
    await vi.waitFor(async () => {
      await nextTick()
      const conversationsList = wrapper.findComponent({ name: 'ConversationsList' })
      return conversationsList.props('loading') === false
    })
    
    const conversationsList = wrapper.findComponent({ name: 'ConversationsList' })
    expect(chatService.getRecentChats).toHaveBeenCalledWith({
      status: 'open,transferred',
      skip: 0,
      limit: 20
    })
    expect(conversationsList.props('conversations')).toEqual(mockConversations)
    expect(conversationsList.props('loading')).toBe(false)
  })

  it('handles loading error', async () => {
    const errorMessage = '加载会话失败'
    ;(chatService.getRecentChats as any).mockRejectedValue(new Error('API Error'))
    
    wrapper = mount(ConversationsView)
    
    // Wait for the mounted hook and async operations to complete
    await vi.waitFor(async () => {
      await nextTick()
      const conversationsList = wrapper.findComponent({ name: 'ConversationsList' })
      return conversationsList.props('loading') === false
    })
    
    const conversationsList = wrapper.findComponent({ name: 'ConversationsList' })
    expect(conversationsList.props('error')).toBe(errorMessage)
    expect(conversationsList.props('loading')).toBe(false)
  })

  it('refreshes conversations when refresh event is emitted', async () => {
    const mockConversations = [
      { id: '1', title: 'Chat 1' },
      { id: '2', title: 'Chat 2' }
    ]
    
    ;(chatService.getRecentChats as any).mockResolvedValue(mockConversations)
    
    wrapper = mount(ConversationsView)
    await vi.waitFor(async () => {
      await nextTick()
      const conversationsList = wrapper.findComponent({ name: 'ConversationsList' })
      return conversationsList.props('loading') === false
    })
    
    // Clear the first call to getRecentChats from mounted
    vi.clearAllMocks()
    
    // Trigger refresh
    const conversationsList = wrapper.findComponent({ name: 'ConversationsList' })
    await conversationsList.vm.$emit('refresh')
    
    // Wait for the refresh to complete
    await vi.waitFor(async () => {
      await nextTick()
      return chatService.getRecentChats.mock.calls.length > 0
    })
    
    expect(chatService.getRecentChats).toHaveBeenCalled()
  })
})