import React from 'react'
import type { UnistylesThemes } from '../global'
import { UnistylesRuntime, UnistylesShadowRegistry } from '../specs'
import { AdaptiveTheme } from './AdaptiveTheme'
import { NamedTheme } from './NamedTheme'

type ThemeProps = {
    name: keyof UnistylesThemes,
    invertedAdaptive?: never
    reset?: never
} | {
    name?: never,
    invertedAdaptive: boolean,
    reset?: never
} | {
    name?: never,
    invertedAdaptive?: never,
    reset: boolean
}

export const ScopedTheme: React.FunctionComponent<React.PropsWithChildren<ThemeProps>> = ({
    name,
    children,
    invertedAdaptive,
    reset
}) => {
    const hasAdaptiveThemes = UnistylesRuntime.hasAdaptiveThemes
    const isAdaptiveTheme = invertedAdaptive && hasAdaptiveThemes
    const previousScopedTheme = UnistylesShadowRegistry.getScopedTheme()

    switch (true) {
        case name !== undefined:
            return (
                <NamedTheme
                    name={name as keyof UnistylesThemes}
                    previousScopedTheme={previousScopedTheme}
                >
                    {children}
                </NamedTheme>
            )
        case isAdaptiveTheme:
            return (
                <AdaptiveTheme previousScopedTheme={previousScopedTheme}>
                    {children}
                </AdaptiveTheme>
            )
        case reset:
            return (
                <NamedTheme
                    name={undefined}
                    previousScopedTheme={previousScopedTheme}
                >
                    {children}
                </NamedTheme>
            )
        default:
            return children
    }
}