import type {
  Config,
  PlatformConfig,
  TransformedToken,
} from 'style-dictionary/types'

import Color from 'colorjs.io'
import { beforeEach, describe, expect, it, vi } from 'vitest'

import { filter, transform } from './oklch.js'

describe('oklch transform', () => {
  const createMockToken = (value: string, type = 'color'): TransformedToken =>
    ({
      name: 'test-token',
      value,
      $value: value,
      type,
      $type: type,
      path: [],
      original: {},
      filePath: '',
      isSource: false,
    }) as TransformedToken

  const createMockConfig = (usesDtcg = false): Config => ({
    usesDtcg,
    platforms: {},
    source: [],
    include: [],
  })

  const createMockPlatformConfig = (): PlatformConfig => ({
    transforms: [],
    buildPath: '',
    files: [],
  })

  describe('filter', () => {
    it('should return true for color tokens with usesDtcg false', () => {
      const token = createMockToken('#000000', 'color')
      const config = createMockConfig(false)

      const result = filter(token, config)

      expect(result).toBe(true)
    })

    it('should return true for color tokens with usesDtcg true', () => {
      const token = createMockToken('#000000', 'color')
      const config = createMockConfig(true)

      const result = filter(token, config)

      expect(result).toBe(true)
    })

    it('should return false for non-color tokens with usesDtcg false', () => {
      const token = createMockToken('1rem', 'spacing')
      const config = createMockConfig(false)

      const result = filter(token, config)

      expect(result).toBe(false)
    })

    it('should return false for non-color tokens with usesDtcg true', () => {
      const token = createMockToken('1rem', 'spacing')
      const config = createMockConfig(true)

      const result = filter(token, config)

      expect(result).toBe(false)
    })

    it('should handle different token types', () => {
      const testCases = [
        { type: 'color', expected: true },
        { type: 'spacing', expected: false },
        { type: 'typography', expected: false },
        { type: 'border', expected: false },
        { type: 'shadow', expected: false },
      ]

      testCases.forEach(({ type, expected }) => {
        const token = createMockToken('test-value', type)
        const config = createMockConfig(false)

        const result = filter(token, config)

        expect(result).toBe(expected)
      })
    })
  })

  describe('transform', () => {
    beforeEach(() => {
      vi.clearAllMocks()
    })

    it('should convert color to OKLCH format with usesDtcg false', () => {
      const token = createMockToken('#ff0000', 'color')
      const config = createMockPlatformConfig()
      const options = createMockConfig(false)

      const result = transform(token, config, options)

      expect(result).toBe('oklch(62.796% 0.25768 29.234)')
    })

    it('should convert color to OKLCH format with usesDtcg true', () => {
      const token = createMockToken('#ff0000', 'color')
      const config = createMockPlatformConfig()
      const options = createMockConfig(true)

      const result = transform(token, config, options)

      expect(result).toBe('oklch(62.796% 0.25768 29.234)')
    })

    it('should handle different color formats', () => {
      const testCases = [
        { value: '#ff0000', expected: 'oklch(62.796% 0.25768 29.234)' },
        { value: 'rgb(0, 255, 0)', expected: 'oklch(86.644% 0.29483 142.5)' },
        {
          value: 'hsl(240, 100%, 50%)',
          expected: 'oklch(45.201% 0.31321 264.05)',
        },
        {
          value: 'rgba(255, 0, 0, 0.5)',
          expected: 'oklch(62.796% 0.25768 29.234 / 0.5)',
        },
      ]

      testCases.forEach(({ value, expected }) => {
        const token = createMockToken(value, 'color')
        const config = createMockPlatformConfig()
        const options = createMockConfig(false)

        const result = transform(token, config, options)

        expect(result).toBe(expected)
      })
    })

    it('should handle color with alpha channel', () => {
      const token = createMockToken('rgba(255, 0, 0, 0.8)', 'color')
      const config = createMockPlatformConfig()
      const options = createMockConfig(false)

      const result = transform(token, config, options)

      expect(result).toBe('oklch(62.796% 0.25768 29.234 / 0.8)')
    })

    it('should handle named colors', () => {
      const token = createMockToken('red', 'color')
      const config = createMockPlatformConfig()
      const options = createMockConfig(false)

      const result = transform(token, config, options)

      expect(result).toBe('oklch(62.796% 0.25768 29.234)')
    })
  })
})