import { router } from '@inertiajs/react'
import * as React from 'react'
import { RouterProvider } from 'react-aria-components'

type Theme = 'dark' | 'light' | 'system'

type ThemeProviderProps = {
  children: React.ReactNode
  defaultTheme?: Theme
  storageKey?: string
}

type ThemeProviderState = {
  theme: Theme
  setTheme: (theme: Theme) => void
}

const initialState: ThemeProviderState = {
  theme: 'system',
  setTheme: () => null,
}

const ThemeProviderContext = React.createContext<ThemeProviderState>(initialState)

function ThemeProvider({
  children,
  defaultTheme = 'system',
  storageKey = 'vite-ui-theme',
  ...props
}: ThemeProviderProps) {
  const [theme, setTheme] = React.useState<Theme>(
    () => (localStorage.getItem(storageKey) as Theme) || defaultTheme,
  )

  React.useEffect(() => {
    const root = window.document.documentElement

    root.classList.remove('light', 'dark')

    if (theme === 'system') {
      const systemTheme = window.matchMedia('(prefers-color-scheme: dark)').matches
        ? 'dark'
        : 'light'

      root.classList.add(systemTheme)
      return
    }

    if (theme === 'light' || theme === 'dark') {
      root.classList.add(theme)
    }
  }, [theme])

  const value = {
    theme,
    setTheme: (newTheme: Theme) => {
      if (newTheme === 'light' || newTheme === 'dark' || newTheme === 'system') {
        localStorage.setItem(storageKey, newTheme)
        setTheme(newTheme)
      }
    },
  }

  return (
    <ThemeProviderContext.Provider {...props} value={value}>
      {children}
    </ThemeProviderContext.Provider>
  )
}

const useTheme = () => {
  const context = React.useContext(ThemeProviderContext)

  if (context === undefined) throw new Error('useTheme must be used within a ThemeProvider')

  return context
}

function Providers({ children }: { children: React.ReactNode }) {
  return (
    <RouterProvider navigate={(to, options) => router.visit(to, options as any)}>
      <ThemeProvider defaultTheme='system' storageKey='ui-theme'>
        {children}
      </ThemeProvider>
    </RouterProvider>
  )
}

export { Providers, useTheme }