import { createPinia, setActivePinia } from 'pinia'
import { beforeEach, describe, expect, it, vi } from 'vitest'
import { nextTick } from 'vue'

import { useSettingSearch } from '@/composables/setting/useSettingSearch'
import { st } from '@/i18n'
import { getSettingInfo, useSettingStore } from '@/stores/settingStore'

// Mock dependencies
vi.mock('@/i18n', () => ({
  st: vi.fn((_: string, fallback: string) => fallback)
}))

vi.mock('@/stores/settingStore', () => ({
  useSettingStore: vi.fn(),
  getSettingInfo: vi.fn()
}))

describe('useSettingSearch', () => {
  let mockSettingStore: any
  let mockSettings: any

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

    // Mock settings data
    mockSettings = {
      'Category.Setting1': {
        id: 'Category.Setting1',
        name: 'Setting One',
        type: 'text',
        defaultValue: 'default',
        category: ['Category', 'Basic']
      },
      'Category.Setting2': {
        id: 'Category.Setting2',
        name: 'Setting Two',
        type: 'boolean',
        defaultValue: false,
        category: ['Category', 'Advanced']
      },
      'Category.HiddenSetting': {
        id: 'Category.HiddenSetting',
        name: 'Hidden Setting',
        type: 'hidden',
        defaultValue: 'hidden',
        category: ['Category', 'Basic']
      },
      'Category.DeprecatedSetting': {
        id: 'Category.DeprecatedSetting',
        name: 'Deprecated Setting',
        type: 'text',
        defaultValue: 'deprecated',
        deprecated: true,
        category: ['Category', 'Advanced']
      },
      'Other.Setting3': {
        id: 'Other.Setting3',
        name: 'Other Setting',
        type: 'select',
        defaultValue: 'option1',
        category: ['Other', 'SubCategory']
      }
    }

    // Mock setting store
    mockSettingStore = {
      settingsById: mockSettings
    }
    vi.mocked(useSettingStore).mockReturnValue(mockSettingStore)

    // Mock getSettingInfo function
    vi.mocked(getSettingInfo).mockImplementation((setting: any) => {
      const parts = setting.category || setting.id.split('.')
      return {
        category: parts[0] ?? 'Other',
        subCategory: parts[1] ?? 'Other'
      }
    })

    // Mock st function to return fallback value
    vi.mocked(st).mockImplementation((_: string, fallback: string) => fallback)
  })

  describe('initialization', () => {
    it('initializes with default state', () => {
      const search = useSettingSearch()

      expect(search.searchQuery.value).toBe('')
      expect(search.filteredSettingIds.value).toEqual([])
      expect(search.searchInProgress.value).toBe(false)
      expect(search.queryIsEmpty.value).toBe(true)
      expect(search.inSearch.value).toBe(false)
      expect(search.searchResultsCategories.value).toEqual(new Set())
    })
  })

  describe('reactive properties', () => {
    it('queryIsEmpty computed property works correctly', () => {
      const search = useSettingSearch()

      expect(search.queryIsEmpty.value).toBe(true)

      search.searchQuery.value = 'test'
      expect(search.queryIsEmpty.value).toBe(false)

      search.searchQuery.value = ''
      expect(search.queryIsEmpty.value).toBe(true)
    })

    it('inSearch computed property works correctly', () => {
      const search = useSettingSearch()

      // Empty query, not in search
      expect(search.inSearch.value).toBe(false)

      // Has query but search in progress
      search.searchQuery.value = 'test'
      search.searchInProgress.value = true
      expect(search.inSearch.value).toBe(false)

      // Has query and search complete
      search.searchInProgress.value = false
      expect(search.inSearch.value).toBe(true)
    })

    it('searchResultsCategories computed property works correctly', () => {
      const search = useSettingSearch()

      // No results
      expect(search.searchResultsCategories.value).toEqual(new Set())

      // Add some filtered results
      search.filteredSettingIds.value = ['Category.Setting1', 'Other.Setting3']
      expect(search.searchResultsCategories.value).toEqual(
        new Set(['Category', 'Other'])
      )
    })

    it('watches searchQuery and sets searchInProgress to true', async () => {
      const search = useSettingSearch()

      expect(search.searchInProgress.value).toBe(false)

      search.searchQuery.value = 'test'
      await nextTick()

      expect(search.searchInProgress.value).toBe(true)
    })
  })

  describe('handleSearch', () => {
    it('clears results when query is empty', () => {
      const search = useSettingSearch()
      search.filteredSettingIds.value = ['Category.Setting1']

      search.handleSearch('')

      expect(search.filteredSettingIds.value).toEqual([])
    })

    it('filters settings by ID (case insensitive)', () => {
      const search = useSettingSearch()

      search.handleSearch('category.setting1')

      expect(search.filteredSettingIds.value).toContain('Category.Setting1')
      expect(search.filteredSettingIds.value).not.toContain('Other.Setting3')
    })

    it('filters settings by name (case insensitive)', () => {
      const search = useSettingSearch()

      search.handleSearch('setting one')

      expect(search.filteredSettingIds.value).toContain('Category.Setting1')
      expect(search.filteredSettingIds.value).not.toContain('Category.Setting2')
    })

    it('filters settings by category', () => {
      const search = useSettingSearch()

      search.handleSearch('other')

      expect(search.filteredSettingIds.value).toContain('Other.Setting3')
      expect(search.filteredSettingIds.value).not.toContain('Category.Setting1')
    })

    it('excludes hidden settings from results', () => {
      const search = useSettingSearch()

      search.handleSearch('hidden')

      expect(search.filteredSettingIds.value).not.toContain(
        'Category.HiddenSetting'
      )
    })

    it('excludes deprecated settings from results', () => {
      const search = useSettingSearch()

      search.handleSearch('deprecated')

      expect(search.filteredSettingIds.value).not.toContain(
        'Category.DeprecatedSetting'
      )
    })

    it('sets searchInProgress to false after search', () => {
      const search = useSettingSearch()
      search.searchInProgress.value = true

      search.handleSearch('test')

      expect(search.searchInProgress.value).toBe(false)
    })

    it('includes visible settings in results', () => {
      const search = useSettingSearch()

      search.handleSearch('setting')

      expect(search.filteredSettingIds.value).toEqual(
        expect.arrayContaining([
          'Category.Setting1',
          'Category.Setting2',
          'Other.Setting3'
        ])
      )
      expect(search.filteredSettingIds.value).not.toContain(
        'Category.HiddenSetting'
      )
      expect(search.filteredSettingIds.value).not.toContain(
        'Category.DeprecatedSetting'
      )
    })

    it('includes all visible settings in comprehensive search', () => {
      const search = useSettingSearch()

      // Search for a partial match that should include multiple settings
      search.handleSearch('setting')

      // Should find all visible settings (not hidden/deprecated)
      expect(search.filteredSettingIds.value.length).toBeGreaterThan(0)
      expect(search.filteredSettingIds.value).toEqual(
        expect.arrayContaining([
          'Category.Setting1',
          'Category.Setting2',
          'Other.Setting3'
        ])
      )
    })

    it('uses translated categories for search', () => {
      const search = useSettingSearch()

      // Mock st to return translated category names
      vi.mocked(st).mockImplementation((key: string, fallback: string) => {
        if (key === 'settingsCategories.Category') {
          return 'Translated Category'
        }
        return fallback
      })

      search.handleSearch('translated category')

      expect(search.filteredSettingIds.value).toEqual(
        expect.arrayContaining(['Category.Setting1', 'Category.Setting2'])
      )
    })
  })

  describe('getSearchResults', () => {
    it('groups results by subcategory', () => {
      const search = useSettingSearch()
      search.filteredSettingIds.value = [
        'Category.Setting1',
        'Category.Setting2'
      ]

      const results = search.getSearchResults(null)

      expect(results).toEqual([
        {
          label: 'Basic',
          settings: [mockSettings['Category.Setting1']]
        },
        {
          label: 'Advanced',
          settings: [mockSettings['Category.Setting2']]
        }
      ])
    })

    it('filters results by active category', () => {
      const search = useSettingSearch()
      search.filteredSettingIds.value = ['Category.Setting1', 'Other.Setting3']

      const activeCategory = { label: 'Category' } as any
      const results = search.getSearchResults(activeCategory)

      expect(results).toEqual([
        {
          label: 'Basic',
          settings: [mockSettings['Category.Setting1']]
        }
      ])
    })

    it('returns all results when no active category', () => {
      const search = useSettingSearch()
      search.filteredSettingIds.value = ['Category.Setting1', 'Other.Setting3']

      const results = search.getSearchResults(null)

      expect(results).toEqual([
        {
          label: 'Basic',
          settings: [mockSettings['Category.Setting1']]
        },
        {
          label: 'SubCategory',
          settings: [mockSettings['Other.Setting3']]
        }
      ])
    })

    it('returns empty array when no filtered results', () => {
      const search = useSettingSearch()
      search.filteredSettingIds.value = []

      const results = search.getSearchResults(null)

      expect(results).toEqual([])
    })

    it('handles multiple settings in same subcategory', () => {
      const search = useSettingSearch()

      // Add another setting to Basic subcategory
      mockSettings['Category.Setting4'] = {
        id: 'Category.Setting4',
        name: 'Setting Four',
        type: 'text',
        defaultValue: 'default',
        category: ['Category', 'Basic']
      }

      search.filteredSettingIds.value = [
        'Category.Setting1',
        'Category.Setting4'
      ]

      const results = search.getSearchResults(null)

      expect(results).toEqual([
        {
          label: 'Basic',
          settings: [
            mockSettings['Category.Setting1'],
            mockSettings['Category.Setting4']
          ]
        }
      ])
    })
  })

  describe('edge cases', () => {
    it('handles empty settings store', () => {
      mockSettingStore.settingsById = {}
      const search = useSettingSearch()

      search.handleSearch('test')

      expect(search.filteredSettingIds.value).toEqual([])
    })

    it('handles settings with undefined category', () => {
      mockSettings['NoCategorySetting'] = {
        id: 'NoCategorySetting',
        name: 'No Category',
        type: 'text',
        defaultValue: 'default'
      }

      const search = useSettingSearch()

      search.handleSearch('category')

      expect(search.filteredSettingIds.value).toContain('NoCategorySetting')
    })

    it('handles special characters in search query', () => {
      const search = useSettingSearch()

      // Search for part of the ID that contains a dot
      search.handleSearch('category.setting')

      expect(search.filteredSettingIds.value).toContain('Category.Setting1')
    })

    it('handles very long search queries', () => {
      const search = useSettingSearch()
      const longQuery = 'a'.repeat(1000)

      search.handleSearch(longQuery)

      expect(search.filteredSettingIds.value).toEqual([])
    })

    it('handles rapid consecutive searches', async () => {
      const search = useSettingSearch()

      search.handleSearch('setting')
      search.handleSearch('other')
      search.handleSearch('category')

      expect(search.filteredSettingIds.value).toEqual(
        expect.arrayContaining(['Category.Setting1', 'Category.Setting2'])
      )
    })
  })
})