go-bananas/web/src/components/use-admin-theme.ts

import { useContext } from 'react'

import { AdminThemeContextInstance, type AdminThemeValue } from './admin-theme-context'

/**
 * Reads the admin theme context.
 *
 * Throws when used outside a provider rather than returning a default. A silent
 * default would let a component render with the wrong theme and never report the
 * mistake, which is exactly the class of bug this codebase's tooling exists to
 * surface.
 */
export function useAdminTheme(): AdminThemeValue {
  const value = useContext(AdminThemeContextInstance)
  if (!value) {
    throw new Error('useAdminTheme must be used inside an AdminThemeProvider')
  }
  return value
}