import { describe, it, expect } from 'vitest'
import { getWeatherInfo, getWeatherSeverity, isSevereWeather } from '../../../src/lib/api/weather-codes.js'

describe('weather-codes', () => {
  describe('getWeatherInfo', () => {
    it('returns correct info for clear sky (0)', () => {
      const info = getWeatherInfo(0)
      expect(info.icon).toBe('☀️')
      expect(info.label).toBe('Clear')
      expect(info.desc).toBe('Clear sky')
    })

    it('returns correct info for partly cloudy (2)', () => {
      const info = getWeatherInfo(2)
      expect(info.icon).toBe('⛅')
      expect(info.label).toBe('Partly Cloudy')
    })

    it('returns correct info for thunderstorm (95)', () => {
      const info = getWeatherInfo(95)
      expect(info.icon).toBe('⛈️')
      expect(info.label).toBe('Thunderstorm')
    })

    it('returns fallback for unknown code', () => {
      const info = getWeatherInfo(999)
      expect(info.icon).toBe('❓')
      expect(info.label).toBe('Unknown')
    })

    it('handles fog codes', () => {
      expect(getWeatherInfo(45).icon).toBe('🌫️')
      expect(getWeatherInfo(48).icon).toBe('🌫️')
    })

    it('handles drizzle codes', () => {
      expect(getWeatherInfo(51).icon).toBe('🌦️')
      expect(getWeatherInfo(53).icon).toBe('🌦️')
      expect(getWeatherInfo(55).icon).toBe('🌧️')
    })

    it('handles rain codes', () => {
      expect(getWeatherInfo(61).icon).toBe('🌧️')
      expect(getWeatherInfo(63).icon).toBe('🌧️')
      expect(getWeatherInfo(65).icon).toBe('🌧️')
    })

    it('handles snow codes', () => {
      expect(getWeatherInfo(71).icon).toBe('🌨️')
      expect(getWeatherInfo(73).icon).toBe('🌨️')
      expect(getWeatherInfo(75).icon).toBe('❄️')
    })

    it('handles showers', () => {
      expect(getWeatherInfo(80).icon).toBe('🌧️')
      expect(getWeatherInfo(81).icon).toBe('🌧️')
      expect(getWeatherInfo(82).icon).toBe('⛈️')
    })
  })

  describe('getWeatherSeverity', () => {
    it('returns clear for code 0', () => {
      expect(getWeatherSeverity(0)).toBe('clear')
    })

    it('returns cloudy for codes 1-3', () => {
      expect(getWeatherSeverity(1)).toBe('cloudy')
      expect(getWeatherSeverity(3)).toBe('cloudy')
    })

    it('returns fog for codes 45-48', () => {
      expect(getWeatherSeverity(45)).toBe('fog')
      expect(getWeatherSeverity(48)).toBe('fog')
    })

    it('returns rain for codes 51-67', () => {
      expect(getWeatherSeverity(51)).toBe('rain')
      expect(getWeatherSeverity(65)).toBe('rain')
    })

    it('returns snow for codes 71-86', () => {
      expect(getWeatherSeverity(71)).toBe('snow')
      expect(getWeatherSeverity(86)).toBe('snow')
    })

    it('returns storm for codes 95-99', () => {
      expect(getWeatherSeverity(95)).toBe('storm')
      expect(getWeatherSeverity(99)).toBe('storm')
    })
  })

  describe('isSevereWeather', () => {
    it('identifies heavy rain as severe', () => {
      expect(isSevereWeather(65)).toBe(true)
    })

    it('identifies heavy snow as severe', () => {
      expect(isSevereWeather(75)).toBe(true)
    })

    it('identifies violent rain showers as severe', () => {
      expect(isSevereWeather(82)).toBe(true)
    })

    it('identifies thunderstorms as severe', () => {
      expect(isSevereWeather(95)).toBe(true)
      expect(isSevereWeather(96)).toBe(true)
      expect(isSevereWeather(99)).toBe(true)
    })

    it('does not consider clear sky severe', () => {
      expect(isSevereWeather(0)).toBe(false)
    })

    it('does not consider light drizzle severe', () => {
      expect(isSevereWeather(51)).toBe(false)
    })
  })
})