import React, { useEffect, useRef } from 'react';
import { View, Animated, ViewStyle } from 'react-native';
import { useTheme } from '~/features/theme/ThemeProvider';

interface DotsAnimationProps {
	size?: number;
	style?: ViewStyle;
	color?: string;
	dotSize?: number;
}

/**
 * Drei pulsierende Punkte
 * Subtil und unaufdringlich - perfekt für inline Loading States
 */
export function DotsAnimation({ size = 60, style, color, dotSize = 12 }: DotsAnimationProps) {
	const { colors } = useTheme();

	const dot1Anim = useRef(new Animated.Value(0.4)).current;
	const dot2Anim = useRef(new Animated.Value(0.4)).current;
	const dot3Anim = useRef(new Animated.Value(0.4)).current;

	const dotColor = color || colors.primary;

	useEffect(() => {
		const createDotAnimation = (animValue: Animated.Value, delay: number) => {
			return Animated.loop(
				Animated.sequence([
					Animated.delay(delay),
					Animated.timing(animValue, {
						toValue: 1,
						duration: 400,
						useNativeDriver: true,
					}),
					Animated.timing(animValue, {
						toValue: 0.4,
						duration: 400,
						useNativeDriver: true,
					}),
					Animated.delay(400),
				])
			);
		};

		const animations = Animated.parallel([
			createDotAnimation(dot1Anim, 0),
			createDotAnimation(dot2Anim, 200),
			createDotAnimation(dot3Anim, 400),
		]);

		animations.start();

		return () => animations.stop();
	}, [dot1Anim, dot2Anim, dot3Anim]);

	return (
		<View
			style={[
				{ flexDirection: 'row', alignItems: 'center', justifyContent: 'center', gap: 8 },
				style,
			]}
		>
			<Animated.View
				style={{
					width: dotSize,
					height: dotSize,
					borderRadius: dotSize / 2,
					backgroundColor: dotColor,
					opacity: dot1Anim,
				}}
			/>
			<Animated.View
				style={{
					width: dotSize,
					height: dotSize,
					borderRadius: dotSize / 2,
					backgroundColor: dotColor,
					opacity: dot2Anim,
				}}
			/>
			<Animated.View
				style={{
					width: dotSize,
					height: dotSize,
					borderRadius: dotSize / 2,
					backgroundColor: dotColor,
					opacity: dot3Anim,
				}}
			/>
		</View>
	);
}