// code from goatstore
// api: https://store.agi.bd
const { createCanvas, loadImage } = require("canvas");
const GIFEncoder = require("gifencoder");
const fs = require("fs-extra");
const path = require("path");

const SIZE = 400;
const FRAMES = 30;
const DELAY = 70; // ms per frame
const LAND_FRAME = 11; // ei frame-er por bar shob namiye fela hoy

const BAR_COUNT = 7;
const BAR_WIDTH = 16;
const GAP = (SIZE - BAR_COUNT * BAR_WIDTH) / (BAR_COUNT + 1);

const clamp = (v, a, b) => Math.min(b, Math.max(a, v));

// bar namar somoy ektu bounce korbe
function easeOutBounce(x) {
	const n1 = 7.5625, d1 = 2.75;
	if (x < 1 / d1) return n1 * x * x;
	if (x < 2 / d1) return n1 * (x -= 1.5 / d1) * x + 0.75;
	if (x < 2.5 / d1) return n1 * (x -= 2.25 / d1) * x + 0.9375;
	return n1 * (x -= 2.625 / d1) * x + 0.984375;
}

// Avatar ek-bar-i black & white kore rakhi (prottek frame-e kora lagbe na)
function makeGrayAvatar(avatar) {
	const c = createCanvas(SIZE, SIZE);
	const ctx = c.getContext("2d");
	ctx.drawImage(avatar, 0, 0, SIZE, SIZE);
	const img = ctx.getImageData(0, 0, SIZE, SIZE);
	const d = img.data;
	for (let i = 0; i < d.length; i += 4) {
		const g = (d[i] * 0.3 + d[i + 1] * 0.59 + d[i + 2] * 0.11) * 0.8;
		d[i] = d[i + 1] = d[i + 2] = g;
	}
	ctx.putImageData(img, 0, 0);
	return c;
}

function drawFrame(ctx, gray, f) {
	const landed = f >= LAND_FRAME;

	// 1) avatar (jail-e dhukle ektu kapbe)
	const shake = landed ? Math.sin(f * 2.2) * 3 : 0;
	ctx.fillStyle = "#000";
	ctx.fillRect(0, 0, SIZE, SIZE);
	ctx.drawImage(gray, shake, 0, SIZE, SIZE);

	// 2) police siren (lal / neel jhilik)
	if (landed) {
		const red = Math.floor((f - LAND_FRAME) / 3) % 2 === 0;
		const grad = ctx.createLinearGradient(red ? 0 : SIZE, 0, red ? SIZE * 0.7 : SIZE * 0.3, 0);
		grad.addColorStop(0, red ? "rgba(255, 30, 30, 0.55)" : "rgba(30, 90, 255, 0.55)");
		grad.addColorStop(1, "rgba(0, 0, 0, 0)");
		ctx.fillStyle = grad;
		ctx.fillRect(0, 0, SIZE, SIZE);
	}

	// 3) bar upor theke namche (ekta ekta kore, delay diye)
	for (let i = 0; i < BAR_COUNT; i++) {
		const p = clamp((f - i) / 8, 0, 1);
		if (p <= 0) continue;
		const bottom = easeOutBounce(p) * SIZE;
		const x = GAP + i * (BAR_WIDTH + GAP);
		const grad = ctx.createLinearGradient(x, 0, x + BAR_WIDTH, 0);
		grad.addColorStop(0, "#1a1a1a");
		grad.addColorStop(0.35, "#8a8a8a");
		grad.addColorStop(0.5, "#cfcfcf");
		grad.addColorStop(0.7, "#555555");
		grad.addColorStop(1, "#111111");
		ctx.fillStyle = grad;
		ctx.fillRect(x, bottom - SIZE, BAR_WIDTH, SIZE);
	}

	// 4) upore-niche rail (bar bosar por ashe)
	if (landed) {
		const a = clamp((f - LAND_FRAME) / 3, 0, 1);
		ctx.globalAlpha = a;
		for (const y of [0, SIZE - 30]) {
			const grad = ctx.createLinearGradient(0, y, 0, y + 30);
			grad.addColorStop(0, "#2b2b2b");
			grad.addColorStop(0.5, "#9a9a9a");
			grad.addColorStop(1, "#1a1a1a");
			ctx.fillStyle = grad;
			ctx.fillRect(0, y, SIZE, 30);
		}
		ctx.globalAlpha = 1;
	}

	// 5) "JAIL" plate (blink kore)
	if (f >= LAND_FRAME + 2) {
		const blink = (f - LAND_FRAME) % 4 < 3 ? 1 : 0.4;
		ctx.globalAlpha = blink;
		ctx.fillStyle = "rgba(0, 0, 0, 0.8)";
		ctx.fillRect(SIZE / 2 - 70, SIZE - 92, 140, 46);
		ctx.fillStyle = "#ffffff";
		ctx.font = "bold 32px sans-serif";
		ctx.textAlign = "center";
		ctx.textBaseline = "middle";
		ctx.fillText("JAIL", SIZE / 2, SIZE - 68);
		ctx.globalAlpha = 1;
	}
}

module.exports = {
	config: {
		name: "jail",
		aliases: ["prison", "jel"],
		version: "2.0",
		author: "Zihad",
		countDown: 15,
		role: 0,
		description: {
			en: "Kauke jail-e vore dao (animated GIF)"
		},
		category: "image",
		guide: {
			en: "{pn}: nijer avatar jail-e"
				+ "\n{pn} @tag: tag kora user jail-e"
				+ "\nOthoba kono message-e reply diye {pn}"
		}
	},

	onStart: async function ({ message, event, usersData }) {
		const { senderID, mentions, messageReply } = event;

		let uid = senderID;
		if (messageReply) uid = messageReply.senderID;
		else if (Object.keys(mentions || {}).length > 0)
			uid = Object.keys(mentions)[0];

		const name = await usersData.getName(uid);
		const outPath = path.join(__dirname, "tmp", `jail_${uid}_${Date.now()}.gif`);

		try {
			const avatar = await loadImage(await usersData.getAvatarUrl(uid));
			const gray = makeGrayAvatar(avatar);
			fs.ensureDirSync(path.dirname(outPath));

			const encoder = new GIFEncoder(SIZE, SIZE);
			const stream = encoder.createReadStream().pipe(fs.createWriteStream(outPath));
			const done = new Promise((resolve, reject) => {
				stream.on("finish", resolve);
				stream.on("error", reject);
			});

			encoder.start();
			encoder.setRepeat(0); // 0 = infinite loop
			encoder.setDelay(DELAY);
			encoder.setQuality(10);

			const canvas = createCanvas(SIZE, SIZE);
			const ctx = canvas.getContext("2d");
			for (let f = 0; f < FRAMES; f++) {
				drawFrame(ctx, gray, f);
				encoder.addFrame(ctx);
			}
			encoder.finish();
			await done;

			await message.reply({
				body: `🚔 ${name} ke jail-e pathano holo!`,
				attachment: fs.createReadStream(outPath)
			});
		}
		catch (err) {
			console.error("[jail]", err);
			return message.reply("GIF banate shomossha hoyeche, abar try korun.");
		}
		finally {
			fs.remove(outPath).catch(() => { });
		}
	}
};