import { describe, expect, it } from 'vitest'
import {
  transformInvocationData,
  aggregateInvocationsByTimestamp,
  filterToWhereClause,
} from './edge-functions.config'
import {
  extractStatusCodesFromData,
  generateStatusCodeAttributes,
  transformStatusCodeData,
} from 'components/interfaces/Reports/Reports.utils'

const defaultFilters = {
  status_code: null,
  region: [],
  execution_time: null,
  functions: [],
}

describe('extractStatusCodesFromData', () => {
  it('should extract and sort unique status codes from the data', () => {
    const data = [
      { status_code: 200 },
      { status_code: 500 },
      { status_code: 200 },
      { status_code: 404 },
    ]
    const result = extractStatusCodesFromData(data)
    expect(result).toEqual(['200', '404', '500'])
  })

  it('should handle an empty array', () => {
    const data: any[] = []
    const result = extractStatusCodesFromData(data)
    expect(result).toEqual([])
  })

  it('should handle data with missing status_code properties', () => {
    const data = [{ status_code: 200 }, {}, { status_code: 500 }]
    const result = extractStatusCodesFromData(data)
    expect(result).toEqual(['200', '500'])
  })

  it('should handle various data types for status_code', () => {
    const data = [{ status_code: 200 }, { status_code: '500' }, { status_code: 404 }]
    const result = extractStatusCodesFromData(data)
    expect(result).toEqual(['200', '404', '500'])
  })
})

describe('generateStatusCodeAttributes', () => {
  it('should generate the correct attributes for a list of status codes', () => {
    const statusCodes = ['200', '404', '500']
    const result = generateStatusCodeAttributes(statusCodes)
    expect(result.map(({ color, ...rest }) => rest)).toEqual([
      {
        attribute: '200',
        label: '200 OK',
      },
      {
        attribute: '404',
        label: '404 Not Found',
      },
      {
        attribute: '500',
        label: '500 Internal Server Error',
      },
    ])
  })

  it('should handle an empty array', () => {
    const statusCodes: string[] = []
    const result = generateStatusCodeAttributes(statusCodes)
    expect(result).toEqual([])
  })
})

describe('transformStatusCodeData', () => {
  it('should pivot the data correctly', () => {
    const data = [
      { timestamp: '2023-01-01T00:00:00Z', status_code: 200, count: 10 },
      { timestamp: '2023-01-01T00:00:00Z', status_code: 500, count: 5 },
      { timestamp: '2023-01-02T00:00:00Z', status_code: 200, count: 20 },
    ]
    const result = transformStatusCodeData(data, ['200', '500'])
    expect(result).toEqual([
      { timestamp: '2023-01-01T00:00:00.000Z', '200': 10, '500': 5 },
      { timestamp: '2023-01-02T00:00:00.000Z', '200': 20, '500': 0 },
    ])
  })

  it('should handle an empty array', () => {
    const data: any[] = []
    const result = transformStatusCodeData(data, [])
    expect(result).toEqual([])
  })

  it('should handle a single entry', () => {
    const data = [{ timestamp: '2023-01-01T00:00:00Z', status_code: 200, count: 10 }]
    const result = transformStatusCodeData(data, ['200', '404'])
    expect(result).toEqual([{ timestamp: '2023-01-01T00:00:00.000Z', '200': 10, '404': 0 }])
  })
})

describe('transformInvocationData', () => {
  const mockFunctions = [
    { id: 'func1', name: 'Function One' },
    { id: 'func2', name: 'Function Two' },
  ]

  it('should transform raw invocation data with function names', () => {
    const rawData = [
      {
        timestamp: '2023-01-01T00:00:00Z',
        function_id: 'func1',
        count: 10,
      },
      {
        timestamp: '2023-01-01T01:00:00Z',
        function_id: 'func2',
        count: 5,
      },
    ]

    const result = transformInvocationData(rawData, mockFunctions)
    expect(result).toEqual([
      {
        timestamp: '2023-01-01T00:00:00.000Z',
        function_id: 'func1',
        count: 10,
        function_name: 'Function One',
      },
      {
        timestamp: '2023-01-01T01:00:00.000Z',
        function_id: 'func2',
        count: 5,
        function_name: 'Function Two',
      },
    ])
  })

  it('should use function_id as fallback when function name not found', () => {
    const rawData = [
      {
        timestamp: '2023-01-01T00:00:00Z',
        function_id: 'unknown_func',
        count: 10,
      },
    ]

    const result = transformInvocationData(rawData, mockFunctions)
    expect(result).toEqual([
      {
        timestamp: '2023-01-01T00:00:00.000Z',
        function_id: 'unknown_func',
        count: 10,
        function_name: 'unknown_func',
      },
    ])
  })

  it('should handle unix micro timestamps', () => {
    const rawData = [
      {
        timestamp: 1672531200000000, // Unix micro timestamp for 2023-01-01T00:00:00Z
        function_id: 'func1',
        count: 10,
      },
    ]

    const result = transformInvocationData(rawData, mockFunctions)
    expect(result[0].timestamp).toBe('2023-01-01T00:00:00.000Z')
    expect(result[0].function_name).toBe('Function One')
  })

  it('should handle empty data array', () => {
    const result = transformInvocationData([], mockFunctions)
    expect(result).toEqual([])
  })

  it('should handle empty functions array', () => {
    const rawData = [
      {
        timestamp: '2023-01-01T00:00:00Z',
        function_id: 'func1',
        count: 10,
      },
    ]

    const result = transformInvocationData(rawData, [])
    expect(result).toEqual([
      {
        timestamp: '2023-01-01T00:00:00.000Z',
        function_id: 'func1',
        count: 10,
        function_name: 'func1',
      },
    ])
  })
})

describe('aggregateInvocationsByTimestamp', () => {
  it('should aggregate counts by timestamp', () => {
    const data = [
      { timestamp: '2023-01-01T00:00:00.000Z', function_id: 'func1', count: 10 },
      { timestamp: '2023-01-01T00:00:00.000Z', function_id: 'func2', count: 5 },
      { timestamp: '2023-01-01T01:00:00.000Z', function_id: 'func1', count: 20 },
    ]

    const result = aggregateInvocationsByTimestamp(data)
    expect(result).toEqual([
      { timestamp: '2023-01-01T00:00:00.000Z', count: 15 },
      { timestamp: '2023-01-01T01:00:00.000Z', count: 20 },
    ])
  })

  it('should handle single entry per timestamp', () => {
    const data = [
      { timestamp: '2023-01-01T00:00:00.000Z', function_id: 'func1', count: 10 },
      { timestamp: '2023-01-01T01:00:00.000Z', function_id: 'func2', count: 5 },
    ]

    const result = aggregateInvocationsByTimestamp(data)
    expect(result).toEqual([
      { timestamp: '2023-01-01T00:00:00.000Z', count: 10 },
      { timestamp: '2023-01-01T01:00:00.000Z', count: 5 },
    ])
  })

  it('should handle empty data array', () => {
    const result = aggregateInvocationsByTimestamp([])
    expect(result).toEqual([])
  })

  it('should handle multiple entries with same timestamp and different counts', () => {
    const data = [
      { timestamp: '2023-01-01T00:00:00.000Z', function_id: 'func1', count: 1 },
      { timestamp: '2023-01-01T00:00:00.000Z', function_id: 'func2', count: 2 },
      { timestamp: '2023-01-01T00:00:00.000Z', function_id: 'func3', count: 3 },
    ]

    const result = aggregateInvocationsByTimestamp(data)
    expect(result).toEqual([{ timestamp: '2023-01-01T00:00:00.000Z', count: 6 }])
  })

  it('should preserve timestamp order from reduce operation', () => {
    const data = [
      { timestamp: '2023-01-01T02:00:00.000Z', function_id: 'func1', count: 30 },
      { timestamp: '2023-01-01T00:00:00.000Z', function_id: 'func1', count: 10 },
      { timestamp: '2023-01-01T01:00:00.000Z', function_id: 'func1', count: 20 },
    ]

    const result = aggregateInvocationsByTimestamp(data)
    expect(result).toHaveLength(3)
    expect(result.map((item) => item.timestamp)).toEqual([
      '2023-01-01T02:00:00.000Z',
      '2023-01-01T00:00:00.000Z',
      '2023-01-01T01:00:00.000Z',
    ])
  })
})

describe('filterToWhereClause', () => {
  it('should return empty string when no filters are provided', () => {
    const result = filterToWhereClause()
    expect(result).toBe('')
  })

  it('should return empty string when filters object is empty', () => {
    const result = filterToWhereClause(defaultFilters)
    expect(result).toBe('')
  })

  it('should generate WHERE clause for functions filter', () => {
    const filters = {
      ...defaultFilters,
      functions: ['func1', 'func2'],
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe("WHERE function_id IN ('func1','func2')")
  })

  it('should generate WHERE clause for status_code filter', () => {
    const filters = {
      ...defaultFilters,
      status_code: {
        operator: '>=' as const,
        value: 400,
      },
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe('WHERE response.status_code >= 400')
  })

  it('should generate WHERE clause for region filter', () => {
    const filters = {
      ...defaultFilters,
      region: ['us-east-1', 'eu-west-1'],
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe("WHERE h.x_sb_edge_region IN ('us-east-1','eu-west-1')")
  })

  it('should generate WHERE clause for execution_time filter', () => {
    const filters = {
      ...defaultFilters,
      execution_time: {
        operator: '<' as const,
        value: 1000,
      },
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe('WHERE m.execution_time_ms < 1000')
  })

  it('should combine multiple filters with AND', () => {
    const filters = {
      functions: ['func1'],
      status_code: {
        operator: '=' as const,
        value: 200,
      },
      region: ['us-east-1'],
      execution_time: {
        operator: '<=' as const,
        value: 500,
      },
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe(
      "WHERE function_id IN ('func1') AND response.status_code = 200 AND h.x_sb_edge_region IN ('us-east-1') AND m.execution_time_ms <= 500"
    )
  })

  it('should handle functions filter with no selected functions', () => {
    const filters = {
      ...defaultFilters,
      functions: [],
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe('')
  })

  it('should handle region filter with no selected regions', () => {
    const filters = {
      ...defaultFilters,
      region: [],
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe('')
  })

  it('should handle single function selection', () => {
    const filters = {
      ...defaultFilters,
      functions: ['single-func'],
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe("WHERE function_id IN ('single-func')")
  })

  it('should handle single region selection', () => {
    const filters = {
      ...defaultFilters,
      region: ['single-region'],
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe("WHERE h.x_sb_edge_region IN ('single-region')")
  })

  it('should handle all comparison operators for status_code', () => {
    const operators = ['=', '!=', '>', '>=', '<', '<='] as const

    operators.forEach((operator) => {
      const filters = {
        ...defaultFilters,
        status_code: {
          operator,
          value: 200,
        },
      }
      const result = filterToWhereClause(filters)
      expect(result).toBe(`WHERE response.status_code ${operator} 200`)
    })
  })

  it('should handle all comparison operators for execution_time', () => {
    const operators = ['=', '!=', '>', '>=', '<', '<='] as const

    operators.forEach((operator) => {
      const filters = {
        ...defaultFilters,
        execution_time: {
          operator,
          value: 100,
        },
      }
      const result = filterToWhereClause(filters)
      expect(result).toBe(`WHERE m.execution_time_ms ${operator} 100`)
    })
  })

  it('should handle numeric values correctly', () => {
    const filters = {
      ...defaultFilters,
      status_code: {
        operator: '>' as const,
        value: 0,
      },
      execution_time: {
        operator: '>=' as const,
        value: 1.5,
      },
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe('WHERE response.status_code > 0 AND m.execution_time_ms >= 1.5')
  })

  it('should handle special characters in function IDs and regions', () => {
    const filters = {
      ...defaultFilters,
      functions: ['func-with-dash', 'func_with_underscore', 'func.with.dots'],
      region: ['region-with-dash', 'region_with_underscore'],
    }
    const result = filterToWhereClause(filters)
    expect(result).toBe(
      "WHERE function_id IN ('func-with-dash','func_with_underscore','func.with.dots') AND h.x_sb_edge_region IN ('region-with-dash','region_with_underscore')"
    )
  })
})