package com.projectsacrifice.game;

public final class AccessibilitySettings {
    private enum TextSize {
        STANDARD("Standard", 1f),
        LARGE("Large", 1.25f);

        final String label;
        final float scale;

        TextSize(String label, float scale) {
            this.label = label;
            this.scale = scale;
        }
    }

    private final TextSize textSize;
    private final boolean highContrastEnabled;
    private final boolean reducedMotionEnabled;

    private AccessibilitySettings(TextSize textSize, boolean highContrastEnabled,
                                  boolean reducedMotionEnabled) {
        this.textSize = textSize;
        this.highContrastEnabled = highContrastEnabled;
        this.reducedMotionEnabled = reducedMotionEnabled;
    }

    public static AccessibilitySettings defaults() {
        return new AccessibilitySettings(TextSize.STANDARD, false, false);
    }

    static AccessibilitySettings restore(int textSizeIndex, boolean highContrastEnabled) {
        return restore(textSizeIndex, highContrastEnabled, false);
    }

    static AccessibilitySettings restore(int textSizeIndex, boolean highContrastEnabled,
                                         boolean reducedMotionEnabled) {
        TextSize[] values = TextSize.values();
        TextSize restored = textSizeIndex >= 0 && textSizeIndex < values.length
                ? values[textSizeIndex] : TextSize.STANDARD;
        return new AccessibilitySettings(restored, highContrastEnabled, reducedMotionEnabled);
    }

    public String textSizeLabel() {
        return textSize.label;
    }

    public float textScale() {
        return textSize.scale;
    }

    public float canvasTextSize(float baseSize) {
        return baseSize * textSize.scale;
    }

    public AccessibilitySettings nextTextSize() {
        TextSize[] values = TextSize.values();
        return new AccessibilitySettings(values[(textSize.ordinal() + 1) % values.length],
                highContrastEnabled, reducedMotionEnabled);
    }

    public boolean highContrastEnabled() {
        return highContrastEnabled;
    }

    public String highContrastLabel() {
        return highContrastEnabled ? "On" : "Off";
    }

    public AccessibilitySettings toggleHighContrast() {
        return new AccessibilitySettings(textSize, !highContrastEnabled, reducedMotionEnabled);
    }

    public boolean reducedMotionEnabled() { return reducedMotionEnabled; }

    public String reducedMotionLabel() { return reducedMotionEnabled ? "On" : "Off"; }

    public AccessibilitySettings toggleReducedMotion() {
        return new AccessibilitySettings(textSize, highContrastEnabled, !reducedMotionEnabled);
    }

    int textSizeIndex() {
        return textSize.ordinal();
    }
}