import { describe, it, expect } from 'vitest'
import React from 'react'
import { View, Text } from 'react-native'
import { render } from '@testing-library/react-native'

const CATEGORY_COLORS: Record<string, string> = {
  'full-body': '#FF6B35',
  'core': '#5AC8FA',
  'upper-body': '#BF5AF2',
  'lower-body': '#30D158',
  'cardio': '#FF9500',
}

describe('WorkoutCard logic', () => {
  describe('category colors', () => {
    it('should map full-body to primary brand color', () => {
      expect(CATEGORY_COLORS['full-body']).toBe('#FF6B35')
    })

    it('should map core to ice blue', () => {
      expect(CATEGORY_COLORS['core']).toBe('#5AC8FA')
    })

    it('should map upper-body to purple', () => {
      expect(CATEGORY_COLORS['upper-body']).toBe('#BF5AF2')
    })

    it('should map lower-body to green', () => {
      expect(CATEGORY_COLORS['lower-body']).toBe('#30D158')
    })

    it('should map cardio to orange', () => {
      expect(CATEGORY_COLORS['cardio']).toBe('#FF9500')
    })
  })

  describe('display formatting', () => {
    const formatDuration = (minutes: number): string => `${minutes} MIN`
    const formatCalories = (calories: number): string => `${calories} CAL`
    const formatLevel = (level: string): string => level.toUpperCase()

    it('should format duration correctly', () => {
      expect(formatDuration(4)).toBe('4 MIN')
      expect(formatDuration(8)).toBe('8 MIN')
      expect(formatDuration(12)).toBe('12 MIN')
      expect(formatDuration(20)).toBe('20 MIN')
    })

    it('should format calories correctly', () => {
      expect(formatCalories(45)).toBe('45 CAL')
      expect(formatCalories(100)).toBe('100 CAL')
    })

    it('should format level correctly', () => {
      expect(formatLevel('Beginner')).toBe('BEGINNER')
      expect(formatLevel('Intermediate')).toBe('INTERMEDIATE')
      expect(formatLevel('Advanced')).toBe('ADVANCED')
    })
  })

  describe('card variants', () => {
    type CardVariant = 'horizontal' | 'grid' | 'featured'

    const getCardDimensions = (variant: CardVariant) => {
      switch (variant) {
        case 'horizontal':
          return { width: 200, height: 280 }
        case 'grid':
          return { flex: 1, aspectRatio: 0.75 }
        case 'featured':
          return { width: 320, height: 400 }
        default:
          return { width: 200, height: 280 }
      }
    }

    it('should return correct dimensions for horizontal variant', () => {
      const dims = getCardDimensions('horizontal')
      expect(dims.width).toBe(200)
      expect(dims.height).toBe(280)
    })

    it('should return correct dimensions for grid variant', () => {
      const dims = getCardDimensions('grid')
      expect(dims.flex).toBe(1)
      expect(dims.aspectRatio).toBe(0.75)
    })

    it('should return correct dimensions for featured variant', () => {
      const dims = getCardDimensions('featured')
      expect(dims.width).toBe(320)
      expect(dims.height).toBe(400)
    })

    it('should default to horizontal for unknown variant', () => {
      const dims = getCardDimensions('unknown' as CardVariant)
      expect(dims.width).toBe(200)
    })
  })

  describe('workout metadata', () => {
    const buildMetadata = (duration: number, calories: number, level: string): string => {
      return `${duration} MIN • ${calories} CAL • ${level.toUpperCase()}`
    }

    it('should build correct metadata string', () => {
      expect(buildMetadata(4, 45, 'Beginner')).toBe('4 MIN • 45 CAL • BEGINNER')
    })

    it('should handle different levels', () => {
      expect(buildMetadata(8, 90, 'Intermediate')).toBe('8 MIN • 90 CAL • INTERMEDIATE')
      expect(buildMetadata(20, 240, 'Advanced')).toBe('20 MIN • 240 CAL • ADVANCED')
    })
  })

  describe('workout filtering helpers', () => {
    const workouts = [
      { id: '1', category: 'full-body', level: 'Beginner', duration: 4 },
      { id: '2', category: 'core', level: 'Intermediate', duration: 8 },
      { id: '3', category: 'upper-body', level: 'Advanced', duration: 12 },
      { id: '4', category: 'full-body', level: 'Intermediate', duration: 4 },
    ]

    const filterByCategory = (list: typeof workouts, cat: string) => 
      list.filter(w => w.category === cat)

    const filterByLevel = (list: typeof workouts, lvl: string) =>
      list.filter(w => w.level === lvl)

    const filterByDuration = (list: typeof workouts, dur: number) =>
      list.filter(w => w.duration === dur)

    it('should filter workouts by category', () => {
      expect(filterByCategory(workouts, 'full-body')).toHaveLength(2)
      expect(filterByCategory(workouts, 'core')).toHaveLength(1)
    })

    it('should filter workouts by level', () => {
      expect(filterByLevel(workouts, 'Beginner')).toHaveLength(1)
      expect(filterByLevel(workouts, 'Intermediate')).toHaveLength(2)
    })

    it('should filter workouts by duration', () => {
      expect(filterByDuration(workouts, 4)).toHaveLength(2)
      expect(filterByDuration(workouts, 8)).toHaveLength(1)
    })
  })
})
