modrinth/apps/frontend/src/plugins/theme/themes.ts

export const LightThemes = ['light'] as const

export type LightTheme = (typeof LightThemes)[number]

export const DarkThemes = ['dark', 'oled', 'retro'] as const

export type DarkTheme = (typeof DarkThemes)[number]

export type Theme = LightTheme | DarkTheme

export function isLightTheme(theme: Theme | (string & Record<never, never>)): theme is LightTheme {
	return LightThemes.includes(theme as any)
}

export function isDarkTheme(theme: Theme | (string & Record<never, never>)): theme is DarkTheme {
	return DarkThemes.includes(theme as any)
}

export type ThemeType = 'light' | 'dark'

export function getThemeType(
	theme: Theme | (string & Record<never, never>),
): ThemeType | 'unknown' {
	if (isLightTheme(theme)) return 'light'
	if (isDarkTheme(theme)) return 'dark'
	return 'unknown'
}