Add demo GIF and sandbox folder

sandbox/server/.gitignore

@@ -0,0 +1,132 @@
+# ---> Node
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+.temp
+.cache
+
+# Docusaurus cache and generated files
+.docusaurus
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+

sandbox/server/index.js

@@ -0,0 +1,97 @@
+const opc = require("../../index.js");
+const app = require("express")();
+
+const FOLDER_PATH = "./images";
+
+app.use((req, res, next) => {
+	//return next();  // <-- Disable All CORS rules
+	res.setHeader("Access-Control-Allow-Origin", "*");
+	res.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS");
+	res.setHeader("Access-Control-Allow-Headers", "Content-Type");
+
+	if (req.method === "OPTIONS") {
+		return res.sendStatus(200);
+	}
+
+	next();
+});
+app.use(require("body-parser").json());
+
+const tasks = new Object();
+async function generateTask (id) {
+	const task = await opc.generateTask(FOLDER_PATH);
+	tasks[id] = {
+		answer: task.answer,
+		successCode: task.openPuzzleCaptchaAPI.taskSolved.successCode,
+		fragments: task.openPuzzleCaptchaAPI.getTask.fragments,
+	};
+}
+
+function generateTaskId () {
+	return Buffer.from([...new Array(4)]
+		.map(() => Math.round(Math.random() * 255)))
+		.toString('hex');
+}
+
+app.get("/:taskId", async (req, res) => {
+	const taskId = req.params.taskId;
+	
+	// For DEMO
+	if (!tasks[taskId] && taskId === "test")
+		await generateTask("test");
+	
+	if (!tasks[taskId]) return res.status(400).json({
+		isError: true,
+		message: `Unknown task: ${req.params.taskId}`,
+	});
+	
+	if (tasks[taskId] === true)
+		await generateTask(taskId);
+	
+	return res.json({
+		isError: false,
+		mode: "3x3",
+		fragments: tasks[taskId].fragments,
+	});
+});
+
+app.post("/:taskId", async (req, res) => {
+	const taskId = req.params.taskId;
+	if (!tasks[taskId]) return res.status(400).json({
+		isError: true,
+		message: `Unknown task: ${req.params.taskId}`,
+	});
+	
+	if (!req.body.answer) return res.status(400).json({
+		isError: true,
+		message: "Filed 'answer' not found in JSON body",
+	});
+	
+	const answer = req.body.answer;
+	const trueAnswer = tasks[taskId].answer;
+	const successCode = tasks[taskId].successCode;
+	
+	delete tasks[taskId];
+	
+	if (answer !== trueAnswer) {
+		const tryAgain = generateTaskId();
+		tasks[tryAgain] = true;
+		
+		return res.json({
+			isError: false,
+			isSuccess: false,
+			tryAgain: "/"+tryAgain,
+		});
+	}
+	return res.json({
+		isError: false,
+		isSuccess: true,
+		successCode,
+	});
+});
+
+app.listen(8081, async (err) => {
+	if (err) throw err;
+	generateTask("test");
+	console.log("Listen 8081");
+});

sandbox/server/package-lock.json

@@ -0,0 +1,764 @@
+{
+  "name": "server",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "dependencies": {
+        "express": "^5.2.1",
+        "fs": "^0.0.1-security"
+      }
+    },
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+      },
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+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
+      }
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sandbox/server/package.json

@@ -0,0 +1,6 @@
+{
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+    "express": "^5.2.1",
+    "fs": "^0.0.1-security"
+  }
+}

sandbox/simple-server/.gitignore

@@ -0,0 +1,132 @@
+# ---> Node
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+.temp
+.cache
+
+# Docusaurus cache and generated files
+.docusaurus
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+

sandbox/simple-server/gm.js

@@ -0,0 +1,43 @@
+const { spawn } = require("child_process");
+
+// GM
+async function callGM(params, stdin) {
+	const out = [];
+	const err = [];
+
+	return await new Promise((resolve, reject) => {
+		gm = spawn("gm", params);
+
+		gm.stdout.on("data", (c) => out.push(c));
+		gm.stderr.on("data", (c) => err.push(c));
+
+		gm.on("close", (code) => {
+			if (code !== 0) return reject(Buffer.concat(err).toString());
+
+			resolve(Buffer.concat(out));
+		});
+		gm.stdin.end(stdin);
+	});
+}
+
+class GMController {
+	async cropImage(buffer, x, y, offsetX = 0, offsetY = 0) {
+		return await callGM(
+			["convert", "-", "-crop", `${x}x${y}+${offsetX}+${offsetY}`, "png:-"],
+			buffer,
+		);
+	}
+
+	// For change hash-sum by insignificant changes in pixel colors
+	async repixelise(buffer) {
+		const noiseAmount = Math.random() * 1; // 0..1%
+		const brightness = (98 + Math.random() * 4).toFixed(2); // 98..102%
+
+		return await callGM(
+			["convert", "-", "-noise", ""+noiseAmount, "-modulate", brightness.toString(), "png:-"],
+			buffer,
+		);
+	}
+}
+
+module.exports = new GMController();

sandbox/simple-server/package-lock.json

@@ -0,0 +1,764 @@
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+  "requires": true,
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+}

sandbox/simple-server/package.json

@@ -0,0 +1,6 @@
+{
+  "dependencies": {
+    "express": "^5.2.1",
+    "fs": "^0.0.1-security"
+  }
+}

sandbox/simple-server/server.js

@@ -0,0 +1,118 @@
+const fs = require("fs");
+const gm = require("./gm");
+
+const app = require("express")();
+const tasks = new Object();
+
+app.use((req, res, next) => {
+	//return next();  // <-- Disable All CORS
+	res.setHeader("Access-Control-Allow-Origin", "*");
+	res.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS");
+	res.setHeader("Access-Control-Allow-Headers", "Content-Type");
+
+	if (req.method === "OPTIONS") {
+		return res.sendStatus(200);
+	}
+
+	next();
+});
+app.use(require("body-parser").json());
+
+function shuffle(array) {
+	for (let i = array.length - 1; i > 0; i--) {
+		let j = Math.floor(Math.random() * (i + 1));
+		[array[i], array[j]] = [array[j], array[i]];
+	}
+}
+
+function getHash(length = 3) {
+	return Buffer.from(
+		[...new Array(length)].map((x) => Math.round(Math.random() * 255)),
+	).toString("hex");
+}
+
+app.post("/test", async (req, res) => {
+	if (!tasks.test) {
+		return res.status(400).json({
+			isError: true,
+			message: "'test' is unknown task",
+		});
+	}
+
+	console.log(req.body);
+	if (!req.body?.answer)
+		return res.status(400).json({
+			isError: true,
+			message: "Empty field 'answer' in JSON-body",
+		});
+	const solve = req.body.answer;
+	if (solve === tasks.test.solve) {
+		const successCode = tasks.test.solveHash
+		delete tasks.test;
+		return res.json({
+			isError: false,
+			isSuccess: true,
+			successCode,
+		});
+	} else {
+		delete tasks.test;
+		return res.json({
+			isError: false,
+			isSuccess: false,
+			tryAgain: "/test",
+		});
+	}
+});
+
+app.get("/test", async (req, res) => {
+	if (tasks.test)
+		return res.json({
+			isError: false,
+			mode: "3x3",
+			fragments: tasks.test.fragments,
+		});
+
+	//const choosenImage = fs.readFileSync("./images/791082.jpg");
+	//const choosenImage = fs.readFileSync("./images/f2bc8547eb879cef0b782ff2cda8baaf.jpg");
+	const choosenImage = fs.readFileSync("./images/5922524_16876101.jpg");
+	//const choosenImage = fs.readFileSync("./images/g619806.jpg");
+	//const choosenImage = fs.readFileSync("./images/576746.jpg");
+	const results = [];
+
+	const fragments = new Object();
+	let solve = "";
+	const addOps = [];
+	for (let row = 0; row < 3; row++)
+		for (let col = 0; col < 3; col++) {
+			let key;
+			do {
+				key = getHash();
+			} while (!!fragments[key]);
+			solve += key;
+			const shardBytes = await gm.repixelise(
+				await gm.cropImage(choosenImage, 50, 50, col * 50, row * 50),
+			);
+			addOps.push(
+				() =>
+					(fragments[key] =
+						`data:image/png;base64,${shardBytes.toString("base64")}`),
+			);
+		}
+
+	shuffle(addOps);
+	addOps.forEach((f) => f());
+	const solveHash = getHash(8);
+
+	tasks.test = { fragments, solve, solveHash };
+	console.log("Required solve:", solve);
+	res.json({
+		isError: false,
+		mode: "3x3",
+		fragments,
+	});
+});
+
+app.listen(8081, (err) => {
+	if (err) throw err;
+	console.info(`Listening: 8081`);
+});

sandbox/test/.gitignore

@@ -0,0 +1,5 @@
+scr.js
+example.js
+package.json
+package-lock.json
+node_modules/

sandbox/test/index.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Test Element</title>
+</head>
+<body>
+    <!-- Test url: data:application/json;utf8,{"isError":false,"mode":"3x3","fragments":{"12fedc":"","a1be45":"","0987c4":"","f5ea99":"","90871c":"","56f7e1":"","8891cf":"","ffc45e":"","0c12f1":""}} -->
+    <div value="" success="false" class="opc-widget" captcha-url='http://127.0.0.1:8081/test' style='border: 1px solid; border-color: #AFAFAF; border-radius: 15px; width: 365px; padding-top: 10px; padding-left: 10px; font: 12px system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif'>
+        <canvas width="350" height="350">Your browser don't support Canvas</canvas>
+        <a href="https://git.fullgream.tech/fullgream/openpuzzle-captcha">OpenPuzzle Captcha</a>
+    </div>
+    <script src="./index.js"></script>
+</body>
+</html>