package settings

type AccessibilityPreferences struct {
	DisplayDensity string
	Contrast       string
	ReducedMotion  bool
	KeyboardFocus  string
}

const (
	DisplayDensityDense       = "dense"
	DisplayDensityComfortable = "comfortable"
	ContrastStandard          = "standard"
	ContrastHigh              = "high"
	KeyboardFocusStandard     = "standard"
	KeyboardFocusProminent    = "prominent"
)

func DefaultAccessibilityPreferences() AccessibilityPreferences {
	return AccessibilityPreferences{
		DisplayDensity: DisplayDensityDense,
		Contrast:       ContrastStandard,
		KeyboardFocus:  KeyboardFocusStandard,
	}
}

func DisplayDensityForDenseLayout(dense bool) string {
	if dense {
		return DisplayDensityDense
	}
	return DisplayDensityComfortable
}

func NormalizeAccessibilityPreferences(prefs AccessibilityPreferences) AccessibilityPreferences {
	normalized := DefaultAccessibilityPreferences()
	switch prefs.DisplayDensity {
	case DisplayDensityDense, DisplayDensityComfortable:
		normalized.DisplayDensity = prefs.DisplayDensity
	}
	switch prefs.Contrast {
	case ContrastStandard, ContrastHigh:
		normalized.Contrast = prefs.Contrast
	}
	switch prefs.KeyboardFocus {
	case KeyboardFocusStandard, KeyboardFocusProminent:
		normalized.KeyboardFocus = prefs.KeyboardFocus
	}
	normalized.ReducedMotion = prefs.ReducedMotion
	return normalized
}