Now Showing

import { SceneScreen, useScene } from "@/features/scenes/kit";
import { LinearGradient } from "expo-linear-gradient";
import * as React from "react";
import { Pressable, StyleSheet, Text, View } from "react-native";
import Animated, {
	Easing,
	Extrapolation,
	type SharedValue,
	interpolate,
	interpolateColor,
	useAnimatedReaction,
	useAnimatedStyle,
	useSharedValue,
	withTiming,
} from "react-native-reanimated";
import {
	Carousel,
	type CarouselItemAnimation,
} from "react-native-reanimated-carousel";
import Svg, { Defs, Path, RadialGradient, Rect, Stop } from "react-native-svg";
import { scheduleOnRN } from "react-native-worklets";
 
type Art = "jelly" | "grid" | "sun" | "dune" | "planet";
 
interface Movie {
	title: string;
	tagline: string;
	genres: string[];
	rating: number;
	length: string;
	colors: [string, string];
	accent: string;
	art: Art;
	// Soft light for the blurred backdrop: x, y, radius (in % of the screen) and color.
	glows: [number, number, number, string][];
	times: string[];
}
 
const MOVIES: Movie[] = [
	{
		title: "Echoes of the Deep",
		tagline: "SOME SIGNALS STAY LOST",
		genres: ["Sci-fi", "Mystery"],
		rating: 8.6,
		length: "2h 08m",
		colors: ["#0B3954", "#087E8B"],
		accent: "#7FF5E8",
		art: "jelly",
		glows: [
			[28, 30, 40, "#7FF5E8"],
			[74, 22, 26, "#7FF5E8"],
			[60, 62, 24, "#2EC4B6"],
		],
		times: ["1:10 PM", "4:20 PM", "7:30 PM", "10:15 PM"],
	},
	{
		title: "Neon City",
		tagline: "THE CITY NEVER LOGS OFF",
		genres: ["Action", "Cyberpunk"],
		rating: 7.9,
		length: "1h 54m",
		colors: ["#2B0A3D", "#D7263D"],
		accent: "#FF4FD8",
		art: "grid",
		glows: [
			[50, 92, 70, "#FF4FD8"],
			[50, 42, 34, "#12051E"],
		],
		times: ["12:45 PM", "3:30 PM", "6:50 PM", "9:40 PM"],
	},
	{
		title: "The Last Summer",
		tagline: "EVERY SUMMER ENDS",
		genres: ["Drama", "Coming of age"],
		rating: 8.2,
		length: "1h 47m",
		colors: ["#F6AE2D", "#F26419"],
		accent: "#FFF3B0",
		art: "sun",
		glows: [
			[50, 45, 38, "#FFF3B0"],
			[50, 95, 60, "#2E86AB"],
		],
		times: ["11:30 AM", "2:15 PM", "5:00 PM", "8:10 PM"],
	},
	{
		title: "Song of the Dunes",
		tagline: "THE SAND REMEMBERS",
		genres: ["Adventure"],
		rating: 8.8,
		length: "2h 31m",
		colors: ["#9C4A1A", "#E09F3E"],
		accent: "#FFE8C2",
		art: "dune",
		glows: [
			[72, 22, 26, "#FFE8C2"],
			[40, 96, 66, "#8A3F12"],
		],
		times: ["12:00 PM", "3:45 PM", "7:15 PM", "10:30 PM"],
	},
	{
		title: "The Star Courier",
		tagline: "4 LIGHT-YEARS. ONE PARCEL.",
		genres: ["Sci-fi", "Comedy"],
		rating: 8.4,
		length: "1h 59m",
		colors: ["#1B1035", "#5B3A9E"],
		accent: "#FFD166",
		art: "planet",
		glows: [
			[50, 44, 34, "#FFD166"],
			[20, 80, 40, "#7B5CD6"],
		],
		times: ["1:30 PM", "4:40 PM", "7:00 PM", "9:55 PM"],
	},
];
 
const ACCENTS = MOVIES.map((m) => m.accent);
const TODAY = new Date()
	.toLocaleDateString("en-US", {
		weekday: "short",
		month: "short",
		day: "numeric",
	})
	.toUpperCase();
const EASE_OUT_QUART = Easing.bezier(0.25, 1, 0.5, 1);
const STAR =
	"M12 2.8l2.8 5.9 6.4.8-4.7 4.4 1.2 6.3L12 17.1l-5.7 3.1 1.2-6.3L2.8 9.5l6.4-.8z";
const circle = (x: number, y: number, r: number) =>
	`M${x - r} ${y}a${r} ${r} 0 1 0 ${2 * r} 0a${r} ${r} 0 1 0 ${-2 * r} 0`;
const each = (n: number, part: (k: number) => string) =>
	Array.from({ length: n }, (_, k) => part(k)).join("");
const JELLIES = [
	[70, 120, 34, 150],
	[160, 80, 22, 100],
	[130, 190, 16, 204],
];
 
// Poster art in a 220 x 320 box, as [path, fill, stroke, strokeWidth] layers.
const ART: Record<Art, [string, string, string?, number?][]> = {
	jelly: [
		[
			JELLIES.map(([x, y, r]) => circle(x, y, r)).join(""),
			"rgba(127,245,232,0.45)",
		],
		[
			JELLIES.map(
				([x, , , t]) =>
					`M${x - 14} ${t}q4 30-4 50M${x} ${t + 4}q-4 34 4 56M${x + 14} ${t}q6 28-2 46`,
			).join(""),
			"none",
			"rgba(127,245,232,0.6)",
			2,
		],
	],
	grid: [
		[
			each(9, (k) => `M${28 * k} 200L${110 + (k - 4) * 70} 320`),
			"none",
			"rgba(255,79,216,0.7)",
			1.5,
		],
		[
			"M0 210H220M0 228H220M0 250H220M0 280H220M0 316H220",
			"none",
			"rgba(255,79,216,0.7)",
			1.5,
		],
		[
			"M20 110h26v90H20zM52 80h34v120H52zM92 126h22v74H92zM120 60h40v140h-40zM166 100h34v100h-34z",
			"#12051E",
		],
	],
	sun: [
		[circle(110, 170, 64), "#FFF3B0"],
		["M0 190h220v130H0z", "#2E86AB"],
		["M20 214h70M120 232h80M40 256h120", "none", "rgba(255,243,176,0.7)", 3],
	],
	dune: [
		[circle(160, 80, 26), "#FFE8C2"],
		[
			"M-10 320L-10 198L20 188Q50 178 80 180Q110 182 140 176Q170 169 200 188L230 208L230 320Z",
			"#C46A2B",
		],
		[
			"M-10 320L-10 240L14 243Q38 246 62 228Q86 211 110 230Q134 250 158 242Q182 235 206 235L230 236L230 320Z",
			"#8A3F12",
		],
	],
	planet: [
		[
			each(30, (k) =>
				circle((k * 73 + 11) % 220, (k * 131 + 47) % 320, 0.6 + (k % 3) * 0.4),
			),
			"rgba(255,255,255,0.8)",
		],
		[circle(110, 150, 54), "#FFD166"],
		// The ring: an ellipse 96 x 18 tilted by -18 degrees.
		[
			"M18.7 179.7A96 18 -18 1 0 201.3 120.3A96 18 -18 1 0 18.7 179.7",
			"none",
			"#FFF1C1",
			5,
		],
	],
};
 
const Poster = React.memo(function Poster({
	movie,
	width,
}: {
	movie: Movie;
	width: number;
}) {
	const k = width / 220;
	const radius = 16 * k;
	return (
		<View
			style={[
				styles.posterShadow,
				{ width, height: width * (320 / 220), borderRadius: radius },
			]}
		>
			<LinearGradient
				colors={movie.colors}
				start={{ x: 0.41, y: 0 }}
				end={{ x: 0.59, y: 1 }}
				style={[styles.poster, { borderRadius: radius }]}
			>
				<Svg
					width="100%"
					height="100%"
					viewBox="0 0 220 320"
					preserveAspectRatio="xMidYMid slice"
				>
					{ART[movie.art].map(([d, fill, stroke, strokeWidth]) => (
						<Path
							key={d}
							d={d}
							fill={fill}
							stroke={stroke}
							strokeWidth={strokeWidth}
						/>
					))}
				</Svg>
				<View
					style={[
						styles.posterText,
						{ left: 14 * k, right: 14 * k, bottom: 16 * k },
					]}
				>
					<Text
						style={[
							styles.posterTitle,
							{ color: movie.accent, fontSize: 25 * k, lineHeight: 27 * k },
						]}
					>
						{movie.title}
					</Text>
					<Text
						style={[
							styles.tagline,
							{ fontSize: 9 * k, lineHeight: 12 * k, letterSpacing: 1.8 * k },
						]}
					>
						{movie.tagline}
					</Text>
				</View>
				<View style={[styles.badge, { top: 12 * k, right: 12 * k }]}>
					<Text style={styles.badgeText}>IMAX</Text>
				</View>
			</LinearGradient>
		</View>
	);
});
 
// One full-screen layer per movie; its opacity is 1 minus its distance to progress (on a loop).
function Backdrop({
	movie,
	index,
	progress,
}: {
	movie: Movie;
	index: number;
	progress: SharedValue<number>;
}) {
	const style = useAnimatedStyle(() => {
		const n = MOVIES.length;
		const d = (((progress.value - index) % n) + n) % n;
		return { opacity: Math.max(0, 1 - Math.min(d, n - d)) };
	});
	return (
		<Animated.View style={[StyleSheet.absoluteFill, style]}>
			<LinearGradient
				colors={movie.colors}
				start={{ x: 0.33, y: 0 }}
				end={{ x: 0.67, y: 1 }}
				style={StyleSheet.absoluteFill}
			/>
			<Svg
				width="100%"
				height="100%"
				viewBox="0 0 100 100"
				preserveAspectRatio="none"
			>
				<Defs>
					{movie.glows.map(([x, y, r, color], k) => (
						<RadialGradient
							key={k}
							id={`${movie.art}-glow-${k}`}
							cx={x}
							cy={y}
							r={r}
							gradientUnits="userSpaceOnUse"
						>
							<Stop offset="0" stopColor={color} stopOpacity={0.6} />
							<Stop offset="1" stopColor={color} stopOpacity={0} />
						</RadialGradient>
					))}
				</Defs>
				{movie.glows.map((_, k) => (
					<Rect
						key={k}
						width={100}
						height={100}
						fill={`url(#${movie.art}-glow-${k})`}
					/>
				))}
			</Svg>
		</Animated.View>
	);
}
 
// Mounted again (new key) for every movie, so the text fades up into place.
function FadeIn({ children }: { children: React.ReactNode }) {
	const t = useSharedValue(0);
	React.useEffect(() => {
		t.value = withTiming(1, {
			duration: 350,
			easing: Easing.out(Easing.cubic),
		});
	}, []);
	const style = useAnimatedStyle(() => ({
		opacity: t.value,
		transform: [{ translateY: (1 - t.value) * 6 }],
	}));
	return <Animated.View style={style}>{children}</Animated.View>;
}
 
function Stars({ rating }: { rating: number }) {
	const full = Math.round(rating / 2);
	return (
		<View style={styles.stars}>
			{Array.from({ length: 5 }, (_, k) => (
				<Svg key={k} width={16} height={16} viewBox="0 0 24 24">
					<Path
						d={STAR}
						fill={k < full ? "#FFD166" : "none"}
						stroke="#FFD166"
						strokeWidth={1.6}
						strokeLinejoin="round"
					/>
				</Svg>
			))}
		</View>
	);
}
 
function NowShowing() {
	const { width, height, insets } = useScene();
	const progress = useSharedValue(0);
	const [index, setIndex] = React.useState(0);
	const [time, setTime] = React.useState(2);
 
	// Tabs, movie details and the button take about 380 pt; the posters get the rest.
	const room = height - insets.top - Math.max(insets.bottom, 16) - 380;
	const posterWidth = Math.round(
		Math.min(width * 0.6, (room - 40) / (320 / 220)),
	);
	const itemSize = Math.round(posterWidth * 1.05);
	const k = posterWidth / 220; // the prototype's numbers are for a 220 pt poster
	const fit = Math.min(1, width / 402); // keeps the three tabs on one line
 
	const itemAnimation = React.useCallback<CarouselItemAnimation>(
		(value) => {
			"worklet";
			const d = Math.abs(value);
			return {
				transform: [
					{ translateX: value * itemSize + (width - itemSize) / 2 },
					{
						translateY: interpolate(
							d,
							[0, 1],
							[0, 24 * k],
							Extrapolation.CLAMP,
						),
					},
					{ scale: interpolate(d, [0, 1], [1, 0.84], Extrapolation.CLAMP) },
				],
				opacity: interpolate(d, [0, 1, 2], [1, 0.6, 0], Extrapolation.CLAMP),
				zIndex: Math.round(100 - d * 10),
			};
		},
		[itemSize, width, k],
	);
 
	// Details follow the poster closest to the center.
	useAnimatedReaction(
		() => {
			const n = MOVIES.length;
			return ((Math.round(progress.value) % n) + n) % n;
		},
		(current, previous) => {
			if (current !== previous) scheduleOnRN(setIndex, current);
		},
	);
 
	// The button blends from one movie's accent to the next while you drag.
	const buttonStyle = useAnimatedStyle(() => {
		const n = ACCENTS.length;
		const i = Math.floor(progress.value);
		const from = ACCENTS[((i % n) + n) % n];
		const to = ACCENTS[(((i + 1) % n) + n) % n];
		return {
			backgroundColor: interpolateColor(progress.value - i, [0, 1], [from, to]),
		};
	});
 
	const renderItem = React.useCallback(
		({ item }: { item: Movie }) => (
			<View style={[styles.slide, { width: itemSize, paddingTop: 12 }]}>
				<Poster movie={item} width={posterWidth} />
			</View>
		),
		[itemSize, posterWidth],
	);
 
	const movie = MOVIES[index];
 
	return (
		<View style={styles.fill}>
			{MOVIES.map((m, i) => (
				<Backdrop key={m.title} movie={m} index={i} progress={progress} />
			))}
			<LinearGradient
				colors={[
					"rgba(0,0,0,0.5)",
					"rgba(0,0,0,0.2)",
					"rgba(0,0,0,0.3)",
					"rgba(0,0,0,0.88)",
				]}
				locations={[0, 0.16, 0.42, 0.68]}
				style={StyleSheet.absoluteFill}
			/>
 
			<View style={[styles.tabs, { marginTop: insets.top + 12 }]}>
				<Text style={[styles.tabOn, { fontSize: 22 * fit }]}>Now Showing</Text>
				<Text style={[styles.tab, { fontSize: 15 * fit }]}>Coming Soon</Text>
				<Text style={[styles.tab, { fontSize: 15 * fit }]}>Cinemas</Text>
			</View>
 
			<View style={styles.stage}>
				<Carousel
					data={MOVIES}
					loop
					autoplay
					autoplayInterval={3000}
					itemSize={itemSize}
					style={{ width, height: posterWidth * (320 / 220) + 48 * k + 12 }}
					animation={{ type: "timing", duration: 650, easing: EASE_OUT_QUART }}
					progress={progress}
					itemAnimation={itemAnimation}
					renderItem={renderItem}
				/>
			</View>
 
			<View
				style={[styles.info, { paddingBottom: Math.max(insets.bottom, 16) }]}
			>
				<FadeIn key={movie.title}>
					<Text style={styles.title} numberOfLines={1}>
						{movie.title}
					</Text>
					<View style={styles.chips}>
						{[...movie.genres, movie.length, "PG-13"].map((label) => (
							<View key={label} style={styles.chip}>
								<Text style={styles.chipText}>{label}</Text>
							</View>
						))}
					</View>
					<View style={styles.rating}>
						<Text style={styles.score}>{movie.rating.toFixed(1)}</Text>
						<Stars rating={movie.rating} />
						<Text style={styles.scoreLabel}>Audience score</Text>
					</View>
				</FadeIn>
 
				<Text style={styles.label}>TODAY · {TODAY}</Text>
				<View style={styles.times}>
					{movie.times.map((t, i) => (
						<Pressable
							key={t}
							onPress={() => setTime(i)}
							style={[styles.time, i === time && { borderColor: movie.accent }]}
						>
							<Text
								style={[styles.timeText, i === time && { color: movie.accent }]}
							>
								{t}
							</Text>
						</Pressable>
					))}
				</View>
 
				<Pressable
					accessibilityRole="button"
					style={({ pressed }) => ({ opacity: pressed ? 0.85 : 1 })}
				>
					<Animated.View style={[styles.button, buttonStyle]}>
						<Text style={styles.buttonText}>
							Get tickets · {movie.times[time]}
						</Text>
					</Animated.View>
				</Pressable>
			</View>
		</View>
	);
}
 
export default function Scene() {
	return (
		<SceneScreen
			background="#000000"
			statusBar="light"
			fonts={[
				"Bricolage-Bold",
				"Instrument-Regular",
				"Instrument-Medium",
				"Instrument-Bold",
				"Fraunces-Bold",
				"JetBrainsMono-Medium",
				"JetBrainsMono-SemiBold",
				"JetBrainsMono-Bold",
			]}
		>
			<NowShowing />
		</SceneScreen>
	);
}
 
const styles = StyleSheet.create({
	fill: { flex: 1 },
	tabs: {
		flexDirection: "row",
		alignItems: "baseline",
		gap: 16,
		paddingHorizontal: 24,
	},
	tabOn: {
		fontFamily: "Bricolage-Bold",
		fontSize: 22,
		lineHeight: 28,
		color: "#FFFFFF",
	},
	tab: {
		fontFamily: "Instrument-Medium",
		fontSize: 15,
		lineHeight: 20,
		color: "rgba(255,255,255,0.6)",
	},
	stage: { flex: 1, justifyContent: "center" },
	slide: { alignItems: "center" },
	posterShadow: { boxShadow: "0 24px 40px -16px rgba(0,0,0,0.7)" },
	poster: { flex: 1, overflow: "hidden" },
	posterText: { position: "absolute", gap: 4 },
	posterTitle: {
		fontFamily: "Fraunces-Bold",
		textShadowColor: "rgba(0,0,0,0.4)",
		textShadowOffset: { width: 0, height: 2 },
		textShadowRadius: 12,
	},
	tagline: {
		fontFamily: "JetBrainsMono-SemiBold",
		color: "rgba(255,255,255,0.8)",
	},
	badge: {
		position: "absolute",
		paddingHorizontal: 6,
		paddingVertical: 4,
		borderRadius: 4,
		backgroundColor: "rgba(0,0,0,0.45)",
	},
	badgeText: {
		fontFamily: "JetBrainsMono-Bold",
		fontSize: 9,
		lineHeight: 11,
		letterSpacing: 0.9,
		color: "#FFFFFF",
	},
	info: { paddingHorizontal: 24 },
	title: {
		fontFamily: "Fraunces-Bold",
		fontSize: 30,
		lineHeight: 36,
		color: "#FFFFFF",
	},
	chips: { flexDirection: "row", flexWrap: "wrap", gap: 6, marginTop: 12 },
	chip: {
		paddingHorizontal: 10,
		paddingVertical: 6,
		borderRadius: 999,
		backgroundColor: "rgba(255,255,255,0.14)",
	},
	chipText: {
		fontFamily: "Instrument-Medium",
		fontSize: 12,
		lineHeight: 14,
		color: "#FFFFFF",
	},
	rating: {
		flexDirection: "row",
		alignItems: "center",
		gap: 10,
		marginTop: 14,
	},
	score: {
		fontFamily: "Bricolage-Bold",
		fontSize: 24,
		lineHeight: 28,
		color: "#FFFFFF",
	},
	stars: { flexDirection: "row", gap: 3 },
	scoreLabel: {
		fontFamily: "Instrument-Regular",
		fontSize: 12,
		lineHeight: 16,
		color: "rgba(255,255,255,0.55)",
	},
	label: {
		fontFamily: "JetBrainsMono-Medium",
		fontSize: 11,
		lineHeight: 14,
		letterSpacing: 1.1,
		color: "rgba(255,255,255,0.55)",
		marginTop: 22,
	},
	times: { flexDirection: "row", gap: 8, marginTop: 10, marginBottom: 20 },
	time: {
		flex: 1,
		height: 40,
		borderRadius: 12,
		borderWidth: 1.5,
		borderColor: "rgba(255,255,255,0.18)",
		backgroundColor: "rgba(255,255,255,0.06)",
		alignItems: "center",
		justifyContent: "center",
	},
	timeText: {
		fontFamily: "Instrument-Medium",
		fontSize: 13,
		lineHeight: 16,
		color: "#FFFFFF",
	},
	button: {
		height: 54,
		borderRadius: 14,
		alignItems: "center",
		justifyContent: "center",
	},
	buttonText: {
		fontFamily: "Instrument-Bold",
		fontSize: 16,
		lineHeight: 20,
		color: "#111111",
	},
});