import { describe, expect, it } from 'vitest'

import {
  COMPLEX_PREFERENCE_MAPPINGS,
  type ComplexMapping,
  getComplexMappingById,
  getComplexMappingTargetKeys,
  type SourceDefinition,
  type TransformFunction,
  type TransformResult
} from '../ComplexPreferenceMappings'

const appFavorite = (id: string) => ({ type: 'app', id })

describe('ComplexPreferenceMappings', () => {
  describe('type exports', () => {
    it('should export SourceDefinition type', () => {
      // Type check - this will fail to compile if types are not exported correctly
      const sourceDef: SourceDefinition = {
        source: 'electronStore',
        key: 'testKey'
      }
      expect(sourceDef.source).toBe('electronStore')
    })

    it('should export SourceDefinition with redux category', () => {
      const sourceDef: SourceDefinition = {
        source: 'redux',
        key: 'testKey',
        category: 'settings'
      }
      expect(sourceDef.category).toBe('settings')
    })

    it('should export TransformResult type', () => {
      const result: TransformResult = {
        'test.key': 'value',
        'another.key': 123
      }
      expect(result['test.key']).toBe('value')
    })

    it('should export TransformFunction type', () => {
      const fn: TransformFunction = (sources) => {
        return { 'output.key': sources.input }
      }
      expect(fn({ input: 'test' })).toEqual({ 'output.key': 'test' })
    })

    it('should export ComplexMapping type', () => {
      const mapping: ComplexMapping = {
        id: 'test_mapping',
        description: 'Test mapping',
        sources: {
          testSource: { source: 'electronStore', key: 'test' }
        },
        targetKeys: ['target.key'],
        transform: () => ({ 'target.key': 'value' })
      }
      expect(mapping.id).toBe('test_mapping')
    })
  })

  describe('COMPLEX_PREFERENCE_MAPPINGS', () => {
    it('should be an array', () => {
      expect(Array.isArray(COMPLEX_PREFERENCE_MAPPINGS)).toBe(true)
    })

    it('should include file processing overrides merge mapping', () => {
      const fileProcessingMapping = COMPLEX_PREFERENCE_MAPPINGS.find((m) => m.id === 'file_processing_overrides_merge')

      expect(fileProcessingMapping).toBeDefined()
      expect(fileProcessingMapping).toMatchObject({
        id: 'file_processing_overrides_merge',
        targetKeys: ['feature.file_processing.overrides']
      })
    })
    it('should contain websearch compression flatten mapping', () => {
      const websearchMapping = COMPLEX_PREFERENCE_MAPPINGS.find((m) => m.id === 'websearch_compression_flatten')
      expect(websearchMapping).toBeDefined()
      expect(websearchMapping?.targetKeys).toContain('chat.web_search.compression.method')
      expect(websearchMapping?.targetKeys.length).toBe(2)
    })

    it('should contain websearch providers migrate mapping', () => {
      const providersMapping = COMPLEX_PREFERENCE_MAPPINGS.find((m) => m.id === 'websearch_providers_migrate')
      expect(providersMapping).toBeDefined()
      expect(providersMapping?.targetKeys).toContain('chat.web_search.provider_overrides')
    })

    it('should contain websearch default provider migrate mapping', () => {
      const defaultProviderMapping = COMPLEX_PREFERENCE_MAPPINGS.find(
        (m) => m.id === 'websearch_default_provider_migrate'
      )
      expect(defaultProviderMapping).toBeDefined()
      expect(defaultProviderMapping?.targetKeys).toEqual(['chat.web_search.default_search_keywords_provider'])
    })

    it('should contain the code_cli_overrides mapping', () => {
      const codeToolsMapping = COMPLEX_PREFERENCE_MAPPINGS.find((m) => m.id === 'code_cli_overrides')
      expect(codeToolsMapping).toBeDefined()
      expect(codeToolsMapping!.targetKeys).toEqual(['feature.code_cli.overrides'])
    })
  })

  describe('getComplexMappingTargetKeys', () => {
    it('should return target keys from configured mappings', () => {
      const keys = getComplexMappingTargetKeys()
      expect(keys).toContain('feature.file_processing.overrides')
    })
    it('should return target keys from all mappings', () => {
      const keys = getComplexMappingTargetKeys()
      expect(keys).toContain('chat.web_search.compression.method')
      expect(keys).toContain('chat.web_search.provider_overrides')
      expect(keys).toContain('chat.web_search.default_search_keywords_provider')
      expect(keys).toContain('feature.code_cli.overrides')
      expect(keys).toContain('feature.file_processing.overrides')
      expect(keys).toContain('chat.default_model_id')
      expect(keys).toContain('topic.naming.model_id')
      expect(keys).toContain('feature.quick_assistant.model_id')
      expect(keys).toContain('feature.translate.model_id')
      expect(keys).toContain('feature.openclaw.gateway_port')
      expect(keys).toContain('feature.openclaw.selected_model_id')
      expect(keys).toContain('shortcut.app.zoom.in')
      expect(keys).toContain('ui.sidebar.favorites')
      expect(keys).toContain('feature.translate.action.preferred_lang')
      expect(keys).toContain('feature.translate.action.alter_lang')
      expect(keys).toContain('feature.translate.mini_window.target_lang')
    })

    it('should flatten target keys from all mappings', () => {
      // Test the function behavior with mock data
      // Note: This tests the logic, actual mappings are empty
      const mockMappings: ComplexMapping[] = [
        {
          id: 'mapping1',
          description: 'Test 1',
          sources: {},
          targetKeys: ['key.a', 'key.b'],
          transform: () => ({})
        },
        {
          id: 'mapping2',
          description: 'Test 2',
          sources: {},
          targetKeys: ['key.c'],
          transform: () => ({})
        }
      ]

      // Simulate flatMap behavior
      const expectedKeys = mockMappings.flatMap((m) => m.targetKeys)
      expect(expectedKeys).toEqual(['key.a', 'key.b', 'key.c'])
    })
  })

  describe('getComplexMappingById', () => {
    it('should return the configured mapping by id', () => {
      const mapping = getComplexMappingById('file_processing_overrides_merge')
      expect(mapping).toBeDefined()
      expect(mapping?.targetKeys).toEqual(['feature.file_processing.overrides'])
    })
    it('should return mapping by id', () => {
      const mapping = getComplexMappingById('websearch_compression_flatten')
      expect(mapping).toBeDefined()
      expect(mapping?.id).toBe('websearch_compression_flatten')
    })

    it('should return undefined for non-existent id', () => {
      const mapping = getComplexMappingById('does_not_exist')
      expect(mapping).toBeUndefined()
    })
  })

  describe('sidebar_favorites_migrate', () => {
    it("should rewrite 'minapp' to 'mini_app' in visible favorites and add agents", () => {
      const mapping = getComplexMappingById('sidebar_favorites_migrate')
      expect(mapping).toBeDefined()

      const result = mapping!.transform({
        visible: ['assistants', 'minapp', 'translate'],
        disabled: ['minapp', 'files']
      })

      expect(result).toEqual({
        'ui.sidebar.favorites': [
          appFavorite('assistants'),
          appFavorite('agents'),
          appFavorite('mini_app'),
          appFavorite('translate')
        ]
      })
    })

    it('should pass through other literals unchanged', () => {
      const mapping = getComplexMappingById('sidebar_favorites_migrate')!
      const result = mapping.transform({
        visible: ['assistants', 'translate', 'paintings'],
        disabled: ['files', 'knowledge']
      })

      expect(result).toEqual({
        'ui.sidebar.favorites': [
          appFavorite('assistants'),
          appFavorite('agents'),
          appFavorite('translate'),
          appFavorite('paintings')
        ]
      })
    })

    it('should append agents when assistants is absent', () => {
      const mapping = getComplexMappingById('sidebar_favorites_migrate')!
      const result = mapping.transform({
        visible: ['store', 'translate'],
        disabled: []
      })

      expect(result).toEqual({
        'ui.sidebar.favorites': [appFavorite('store'), appFavorite('translate'), appFavorite('agents')]
      })
    })

    it('should keep agents in place when it is already visible', () => {
      const mapping = getComplexMappingById('sidebar_favorites_migrate')!
      const result = mapping.transform({
        visible: ['assistants', 'agents', 'translate'],
        disabled: []
      })

      expect(result).toEqual({
        'ui.sidebar.favorites': [appFavorite('assistants'), appFavorite('agents'), appFavorite('translate')]
      })
    })

    it('should preserve the old default visible sidebar favorites', () => {
      const mapping = getComplexMappingById('sidebar_favorites_migrate')!
      const result = mapping.transform({
        visible: [
          'assistants',
          'store',
          'paintings',
          'translate',
          'mini_app',
          'knowledge',
          'files',
          'code_tools',
          'notes',
          'openclaw'
        ],
        disabled: []
      })

      expect(result).toEqual({
        'ui.sidebar.favorites': [
          appFavorite('assistants'),
          appFavorite('agents'),
          appFavorite('store'),
          appFavorite('paintings'),
          appFavorite('translate'),
          appFavorite('mini_app'),
          appFavorite('knowledge'),
          appFavorite('files'),
          appFavorite('code_tools'),
          appFavorite('notes'),
          appFavorite('openclaw')
        ]
      })
    })

    it('should preserve the old default visible sidebar favorites without openclaw', () => {
      const mapping = getComplexMappingById('sidebar_favorites_migrate')!
      const result = mapping.transform({
        visible: [
          'assistants',
          'store',
          'paintings',
          'translate',
          'mini_app',
          'knowledge',
          'files',
          'code_tools',
          'notes'
        ],
        disabled: []
      })

      expect(result).toEqual({
        'ui.sidebar.favorites': [
          appFavorite('assistants'),
          appFavorite('agents'),
          appFavorite('store'),
          appFavorite('paintings'),
          appFavorite('translate'),
          appFavorite('mini_app'),
          appFavorite('knowledge'),
          appFavorite('files'),
          appFavorite('code_tools'),
          appFavorite('notes')
        ]
      })
    })

    it('should preserve old visible sidebar favorites when invisible is non-empty', () => {
      const mapping = getComplexMappingById('sidebar_favorites_migrate')!
      const result = mapping.transform({
        visible: [
          'assistants',
          'store',
          'paintings',
          'translate',
          'mini_app',
          'knowledge',
          'files',
          'code_tools',
          'notes'
        ],
        disabled: ['files']
      })

      expect(result).toEqual({
        'ui.sidebar.favorites': [
          appFavorite('assistants'),
          appFavorite('agents'),
          appFavorite('store'),
          appFavorite('paintings'),
          appFavorite('translate'),
          appFavorite('mini_app'),
          appFavorite('knowledge'),
          appFavorite('files'),
          appFavorite('code_tools'),
          appFavorite('notes')
        ]
      })
    })

    it('should not force agents visible when it was explicitly hidden', () => {
      const mapping = getComplexMappingById('sidebar_favorites_migrate')!
      const result = mapping.transform({
        visible: ['assistants', 'translate'],
        disabled: ['agents', 'files']
      })

      expect(result).toEqual({
        'ui.sidebar.favorites': [appFavorite('assistants'), appFavorite('translate')]
      })
    })

    it('should deduplicate migrated favorites', () => {
      const mapping = getComplexMappingById('sidebar_favorites_migrate')!
      const result = mapping.transform({
        visible: ['assistants', 'minapp', 'mini_app', 'translate', 'translate'],
        disabled: []
      })

      expect(result).toEqual({
        'ui.sidebar.favorites': [
          appFavorite('assistants'),
          appFavorite('agents'),
          appFavorite('mini_app'),
          appFavorite('translate')
        ]
      })
    })

    it('should return undefined for non-array inputs without crashing', () => {
      const mapping = getComplexMappingById('sidebar_favorites_migrate')!

      expect(mapping.transform({ visible: undefined, disabled: undefined })).toEqual({
        'ui.sidebar.favorites': undefined
      })

      expect(mapping.transform({ visible: null, disabled: null })).toEqual({
        'ui.sidebar.favorites': undefined
      })

      expect(mapping.transform({})).toEqual({
        'ui.sidebar.favorites': undefined
      })
    })
  })

  describe('openclaw_preferences', () => {
    it('should map gateway port and convert selected model JSON', () => {
      const mapping = getComplexMappingById('openclaw_preferences')!

      expect(
        mapping.transform({
          gatewayPort: 18790,
          selectedModelUniqId: '{"id":"gpt-4o","provider":"openai"}'
        })
      ).toEqual({
        'feature.openclaw.gateway_port': 18790,
        'feature.openclaw.selected_model_id': 'openai::gpt-4o'
      })
    })

    it.each([
      ['', null],
      ['null', null],
      ['"some-string"', null],
      ['[{"id":"x","provider":"y"}]', null],
      ['{"id":"openai::gpt-4","provider":"openai"}', 'openai::gpt-4'],
      ['openai::gpt-4', null]
    ])('should handle legacy selected model value %s', (selectedModelUniqId, expected) => {
      const mapping = getComplexMappingById('openclaw_preferences')!

      expect(
        mapping.transform({
          gatewayPort: 18790,
          selectedModelUniqId
        })['feature.openclaw.selected_model_id']
      ).toBe(expected)
    })

    it('should skip invalid gateway ports so schema default applies', () => {
      const mapping = getComplexMappingById('openclaw_preferences')!

      expect(mapping.transform({ gatewayPort: undefined })['feature.openclaw.gateway_port']).toBeUndefined()
      expect(mapping.transform({ gatewayPort: null })['feature.openclaw.gateway_port']).toBeUndefined()
      expect(mapping.transform({ gatewayPort: '18790' })['feature.openclaw.gateway_port']).toBeUndefined()
      expect(mapping.transform({ gatewayPort: Number.NaN })['feature.openclaw.gateway_port']).toBeUndefined()
    })
  })

  describe('ComplexMapping structure validation', () => {
    it('should validate mapping structure', () => {
      // Create a valid mapping structure
      const validMapping: ComplexMapping = {
        id: 'window_bounds_split',
        description: 'Split windowBounds object into separate position and size keys',
        sources: {
          windowBounds: { source: 'electronStore', key: 'windowBounds' }
        },
        targetKeys: [
          'app.window.position.x',
          'app.window.position.y',
          'app.window.size.width',
          'app.window.size.height'
        ],
        transform: (sources) => {
          const bounds = sources.windowBounds as { x: number; y: number; width: number; height: number } | undefined
          return {
            'app.window.position.x': bounds?.x ?? 0,
            'app.window.position.y': bounds?.y ?? 0,
            'app.window.size.width': bounds?.width ?? 800,
            'app.window.size.height': bounds?.height ?? 600
          }
        }
      }

      // Validate structure
      expect(validMapping.id).toBeDefined()
      expect(validMapping.description).toBeDefined()
      expect(validMapping.sources).toBeDefined()
      expect(validMapping.targetKeys).toBeDefined()
      expect(validMapping.transform).toBeDefined()
      expect(typeof validMapping.transform).toBe('function')
    })

    it('should execute transform function correctly', () => {
      const transform: TransformFunction = (sources) => {
        const bounds = sources.windowBounds as { x: number; y: number; width: number; height: number } | undefined
        return {
          'app.window.position.x': bounds?.x ?? 0,
          'app.window.position.y': bounds?.y ?? 0,
          'app.window.size.width': bounds?.width ?? 800,
          'app.window.size.height': bounds?.height ?? 600
        }
      }

      // Test with valid data
      const result1 = transform({
        windowBounds: { x: 100, y: 200, width: 1024, height: 768 }
      })
      expect(result1).toEqual({
        'app.window.position.x': 100,
        'app.window.position.y': 200,
        'app.window.size.width': 1024,
        'app.window.size.height': 768
      })

      // Test with missing data (should use defaults)
      const result2 = transform({})
      expect(result2).toEqual({
        'app.window.position.x': 0,
        'app.window.position.y': 0,
        'app.window.size.width': 800,
        'app.window.size.height': 600
      })
    })

    it('should handle multi-source merging', () => {
      const transform: TransformFunction = (sources) => {
        if (!sources.proxyEnabled) return {}
        return {
          'network.proxy.enabled': sources.proxyEnabled,
          'network.proxy.host': sources.proxyHost ?? '',
          'network.proxy.port': sources.proxyPort ?? 0
        }
      }

      // Test with proxy enabled
      const result1 = transform({
        proxyEnabled: true,
        proxyHost: '127.0.0.1',
        proxyPort: 8080
      })
      expect(result1).toEqual({
        'network.proxy.enabled': true,
        'network.proxy.host': '127.0.0.1',
        'network.proxy.port': 8080
      })

      // Test with proxy disabled (should return empty)
      const result2 = transform({
        proxyEnabled: false,
        proxyHost: '127.0.0.1',
        proxyPort: 8080
      })
      expect(result2).toEqual({})
    })

    it('should handle conditional mapping', () => {
      const transform: TransformFunction = (sources) => {
        const result: TransformResult = {}

        if (sources.backupType === 'webdav' && sources.webdavUrl) {
          result['data.backup.webdav.enabled'] = true
          result['data.backup.webdav.url'] = sources.webdavUrl
        }

        if (sources.backupType === 's3' && sources.s3Bucket) {
          result['data.backup.s3.enabled'] = true
          result['data.backup.s3.bucket'] = sources.s3Bucket
        }

        return result
      }

      // Test webdav backup
      const result1 = transform({
        backupType: 'webdav',
        webdavUrl: 'https://dav.example.com'
      })
      expect(result1).toEqual({
        'data.backup.webdav.enabled': true,
        'data.backup.webdav.url': 'https://dav.example.com'
      })

      // Test s3 backup
      const result2 = transform({
        backupType: 's3',
        s3Bucket: 'my-bucket'
      })
      expect(result2).toEqual({
        'data.backup.s3.enabled': true,
        'data.backup.s3.bucket': 'my-bucket'
      })

      // Test no backup configured
      const result3 = transform({
        backupType: 'none'
      })
      expect(result3).toEqual({})
    })
  })
})
