Cuz why not

This commit is contained in:
Tyler
2026-04-20 00:51:29 -04:00
committed by GitHub
parent 2a5eb3ff04
commit 7a27d314a2
14 changed files with 0 additions and 1835 deletions
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/**
* Encryption module.
* Handles cryptographic operations using Web Crypto API.
* Implements AES-GCM encryption with PBKDF2 key derivation.
*/
// ===== Constants =====
const SALT_LENGTH = 16;
const IV_LENGTH = 12;
const PBKDF2_ITERATIONS = 200_000;
const KEY_LENGTH = 256;
// ===== Binary-safe Base64 Helpers =====
function base64Encode(buffer) {
const binary = Array.from(new Uint8Array(buffer))
.map(byte => String.fromCharCode(byte))
.join('');
return btoa(binary);
}
function base64Decode(b64str) {
const binary = atob(b64str);
const bytes = new Uint8Array(binary.length);
for (let i = 0; i < binary.length; i++) {
bytes[i] = binary.charCodeAt(i);
}
return bytes;
}
// ===== Key Derivation =====
/**
* Derives an AES-GCM key from a password using PBKDF2.
* @param {string} password - User-supplied password.
* @param {Uint8Array} salt - Randomly generated salt.
* @returns {Promise<CryptoKey>} - Derived cryptographic key.
*/
export async function deriveKey(password, salt) {
const encoder = new TextEncoder();
const keyMaterial = await crypto.subtle.importKey(
'raw',
encoder.encode(password),
{ name: 'PBKDF2' },
false,
['deriveKey']
);
return crypto.subtle.deriveKey(
{
name: 'PBKDF2',
salt,
iterations: PBKDF2_ITERATIONS,
hash: 'SHA-256'
},
keyMaterial,
{ name: 'AES-GCM', length: KEY_LENGTH },
false,
['encrypt', 'decrypt']
);
}
// ===== Encryption =====
/**
* Encrypts a message using AES-GCM with a derived key.
* @param {string} message - Plaintext message to encrypt.
* @param {string} password - User password for key derivation.
* @returns {Promise<string>} - Base64-encoded encrypted string.
*/
export async function encryptAdvanced(message, password) {
const encoder = new TextEncoder();
const salt = crypto.getRandomValues(new Uint8Array(SALT_LENGTH));
const iv = crypto.getRandomValues(new Uint8Array(IV_LENGTH));
const key = await deriveKey(password, salt);
const encoded = encoder.encode(message);
const ciphertext = await crypto.subtle.encrypt(
{ name: 'AES-GCM', iv },
key,
encoded
);
const output = new Uint8Array(salt.length + iv.length + ciphertext.byteLength);
output.set(salt);
output.set(iv, salt.length);
output.set(new Uint8Array(ciphertext), salt.length + iv.length);
return base64Encode(output.buffer);
}
// ===== Decryption =====
/**
* Decrypts an AES-GCM encrypted string.
* @param {string} encryptedData - Base64-encoded ciphertext.
* @param {string} password - Password used to derive the decryption key.
* @returns {Promise<string>} - Decrypted plaintext.
*/
export async function decryptAdvanced(encryptedData, password) {
const encrypted = base64Decode(encryptedData);
const salt = encrypted.slice(0, SALT_LENGTH);
const iv = encrypted.slice(SALT_LENGTH, SALT_LENGTH + IV_LENGTH);
const ciphertext = encrypted.slice(SALT_LENGTH + IV_LENGTH);
const key = await deriveKey(password, salt);
const decrypted = await crypto.subtle.decrypt(
{ name: 'AES-GCM', iv },
key,
ciphertext
);
return new TextDecoder().decode(decrypted);
}
// ===== Module Initialization =====
/**
* Initializes the encryption module and logs its status.
*/
export function setupEncryption() {
console.log('[Encryption] Module loaded');
}
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import { deriveKey } from "./encryption.js"; // assuming shared deriveKey()
const SALT_LENGTH = 16;
const IV_LENGTH = 12;
const KEY_LENGTH = 256;
/**
* Encrypts a full file and downloads the encrypted version.
*/
export async function encryptFile(fileInput, password) {
const file = fileInput.files[0];
if (!file) return;
try {
const salt = crypto.getRandomValues(new Uint8Array(SALT_LENGTH));
const iv = crypto.getRandomValues(new Uint8Array(IV_LENGTH));
const key = await deriveKey(password, salt);
const fileBuffer = new Uint8Array(await file.arrayBuffer());
const ciphertext = await crypto.subtle.encrypt(
{ name: "AES-GCM", iv },
key,
fileBuffer
);
const ctBytes = new Uint8Array(ciphertext);
const result = new Uint8Array(salt.length + iv.length + ctBytes.length);
result.set(salt);
result.set(iv, salt.length);
result.set(ctBytes, salt.length + iv.length);
const blob = new Blob([result], { type: "application/octet-stream" });
const url = URL.createObjectURL(blob);
const a = document.createElement("a");
a.href = url;
a.download = file.name + ".encrypted";
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
} catch (error) {
alert("Error encrypting file: " + error.message);
}
}
export async function decryptFile(fileInput, password) {
const file = fileInput.files[0];
if (!file) return;
try {
const data = new Uint8Array(await file.arrayBuffer());
const salt = data.slice(0, SALT_LENGTH);
const iv = data.slice(SALT_LENGTH, SALT_LENGTH + IV_LENGTH);
const ciphertext = data.slice(SALT_LENGTH + IV_LENGTH);
const key = await deriveKey(password, salt);
const decrypted = await crypto.subtle.decrypt(
{ name: "AES-GCM", iv },
key,
ciphertext
);
const blob = new Blob([decrypted], { type: "application/octet-stream" });
const url = URL.createObjectURL(blob);
const a = document.createElement("a");
a.href = url;
a.download = file.name.replace(".encrypted", "");
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
} catch (error) {
alert("Error decrypting file: " + error.message);
}
}
// ===== File Processing =====
async function processFile(file, password, isEncrypt) {
const chunks = [];
const totalChunks = Math.ceil(file.size / CHUNK_SIZE);
let processedChunks = 0;
for (let start = 0; start < file.size; start += CHUNK_SIZE) {
const chunk = file.slice(start, start + CHUNK_SIZE);
const arrayBuffer = await chunk.arrayBuffer();
const uint8Array = new Uint8Array(arrayBuffer);
const processedChunk = await processChunk(uint8Array, password, isEncrypt);
chunks.push(processedChunk);
processedChunks++;
updateProgress(processedChunks, totalChunks);
}
return chunks;
}
async function processChunk(data, password, isEncrypt) {
const payload = {
"encryption-type": "advanced",
operation: isEncrypt ? "encrypt" : "decrypt",
message: Array.from(data).join(','),
password: password
};
const response = await fetch("/", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify(payload)
});
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const result = await response.json();
return new Uint8Array(result.result.split(',').map(Number));
}
// ===== File Download =====
function downloadEncryptedFile(chunks, originalName) {
const blob = new Blob(chunks, { type: 'application/octet-stream' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = originalName + '.encrypted';
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
}
function downloadDecryptedFile(chunks, originalName) {
const blob = new Blob(chunks, { type: 'application/octet-stream' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = originalName.replace('.encrypted', '');
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
}
// ===== Progress Tracking =====
function updateProgress(processed, total) {
const progressBar = document.getElementById("file-progress");
const progressText = document.getElementById("file-progress-text");
if (progressBar && progressText) {
const percent = Math.round((processed / total) * 100);
progressBar.style.width = percent + "%";
progressText.textContent = `Processing: ${percent}%`;
if (processed === total) {
setTimeout(() => {
progressBar.style.width = "0%";
progressText.textContent = "";
}, 1000);
}
}
}
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/**
* Main application entry point.
* Initializes UI and game components when the DOM is loaded.
*/
import { setupUI } from './ui.js';
import { setupGame } from './pacman.js';
// Initialize application when DOM is fully loaded
window.addEventListener("DOMContentLoaded", () => {
setupUI();
setupGame();
});
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/**
* Pacman game module.
* Handles game logic, rendering, and user interaction.
*/
// ===== Game Constants =====
const PACMAN_SPEED = 40;
const ENEMY_SPEED = 20;
const CELL_SIZE = 40;
const DOT_SIZE = 5;
// ===== Game State =====
let canvas, ctx, pacman, enemy, walls, dots, score;
let cols, rows, randSeed, gameInterval;
// ===== Public Interface =====
export function setupGame() {
console.log('[PacMan] Game module loaded.');
window.startPacman = startPacman;
window.exitGame = exitGame;
}
export function startPacman() {
// Scroll to the Pacman section
const pacmanSection = document.getElementById("pacman-section");
if (pacmanSection) {
pacmanSection.scrollIntoView({ behavior: 'smooth' });
}
// Initialize game state
initializeGame();
setupGameLoop();
}
export function stopPacman() {
clearInterval(gameInterval);
if (ctx) ctx.clearRect(0, 0, canvas.width, canvas.height);
// Restore scrolling
document.body.style.overflow = '';
document.removeEventListener('wheel', preventScroll);
document.removeEventListener('touchmove', preventScroll);
}
export function resetGame() {
stopPacman();
startPacman();
}
export function exitGame() {
stopPacman();
document.getElementById("input-text").value = "";
document.getElementById("pacman-section").style.display = "none";
document.getElementById("encoding-section").style.display = "block";
}
// ===== Game Initialization =====
function initializeGame() {
canvas = document.getElementById("pacmanCanvas");
ctx = canvas.getContext("2d");
cols = Math.floor(canvas.width / CELL_SIZE);
rows = Math.floor(canvas.height / CELL_SIZE);
walls = [];
dots = [];
score = 0;
clearInterval(gameInterval);
// Get seed from generated password or use default
const passwordField = document.getElementById("generated-password");
const seedSource = passwordField?.value || "pacman";
randSeed = [...seedSource].reduce((s, c) => s + c.charCodeAt(0), 0);
generateWalls();
generateDots();
pacman = spawn();
do { enemy = spawn(); } while (enemy.x === pacman.x && enemy.y === pacman.y);
pacman.dx = pacman.dy = 0;
document.addEventListener("keydown", movePacman);
// Prevent scrolling
document.body.style.overflow = 'hidden';
document.addEventListener('wheel', preventScroll, { passive: false });
document.addEventListener('touchmove', preventScroll, { passive: false });
// Add touch controls
let touchStartX = 0;
let touchStartY = 0;
canvas.addEventListener('touchstart', (e) => {
e.preventDefault();
touchStartX = e.touches[0].clientX;
touchStartY = e.touches[0].clientY;
}, { passive: false });
canvas.addEventListener('touchmove', (e) => {
e.preventDefault();
}, { passive: false });
canvas.addEventListener('touchend', (e) => {
e.preventDefault();
const touchEndX = e.changedTouches[0].clientX;
const touchEndY = e.changedTouches[0].clientY;
const dx = touchEndX - touchStartX;
const dy = touchEndY - touchStartY;
// Determine swipe direction based on the larger movement
if (Math.abs(dx) > Math.abs(dy)) {
// Horizontal swipe
if (dx > 0) {
pacman.dx = PACMAN_SPEED;
pacman.dy = 0;
} else {
pacman.dx = -PACMAN_SPEED;
pacman.dy = 0;
}
} else {
// Vertical swipe
if (dy > 0) {
pacman.dx = 0;
pacman.dy = PACMAN_SPEED;
} else {
pacman.dx = 0;
pacman.dy = -PACMAN_SPEED;
}
}
}, { passive: false });
}
function setupGameLoop() {
gameInterval = setInterval(gameLoop, 150);
}
// ===== Game Setup Helpers =====
function spawn() {
const options = [];
for (let c = 1; c < cols - 1; c++) {
for (let r = 1; r < rows - 1; r++) {
if (!walls.some(w => w.c === c && w.r === r)) {
const neighbors = [
{ c: c + 1, r }, { c: c - 1, r },
{ c, r: r + 1 }, { c, r: r - 1 }
];
if (neighbors.some(n => !walls.some(w => w.c === n.c && w.r === n.r))) {
options.push({ c, r });
}
}
}
}
const s = options[Math.floor(rand() * options.length)];
return {
x: s.c * CELL_SIZE + CELL_SIZE / 2,
y: s.r * CELL_SIZE + CELL_SIZE / 2,
size: CELL_SIZE / 2 - 5,
dx: 0,
dy: 0
};
}
function rand() {
const x = Math.sin(randSeed++) * 10000;
return x - Math.floor(x);
}
function generateWalls() {
// First pass: generate initial walls
for (let c = 0; c < cols; c++) {
for (let r = 0; r < rows; r++) {
if (c === 0 || r === 0 || c === cols - 1 || r === rows - 1 || rand() < 0.2) {
walls.push({ c, r });
}
}
}
// Second pass: check for enclosed spaces
for (let c = 1; c < cols - 1; c++) {
for (let r = 1; r < rows - 1; r++) {
// Skip if already a wall
if (walls.some(w => w.c === c && w.r === r)) continue;
// Check all four sides
const hasWallAbove = walls.some(w => w.c === c && w.r === r - 1);
const hasWallBelow = walls.some(w => w.c === c && w.r === r + 1);
const hasWallLeft = walls.some(w => w.c === c - 1 && w.r === r);
const hasWallRight = walls.some(w => w.c === c + 1 && w.r === r);
// If all sides are walls, make this spot a wall too
if (hasWallAbove && hasWallBelow && hasWallLeft && hasWallRight) {
walls.push({ c, r });
}
}
}
}
function generateDots() {
dots = [];
for (let c = 1; c < cols - 1; c++) {
for (let r = 1; r < rows - 1; r++) {
if (walls.some(w => w.c === c && w.r === r)) continue;
const isEnclosed =
walls.some(w => w.c === c + 1 && w.r === r) &&
walls.some(w => w.c === c - 1 && w.r === r) &&
walls.some(w => w.c === c && w.r === r + 1) &&
walls.some(w => w.c === c && w.r === r - 1);
if (!isEnclosed) dots.push({ c, r });
}
}
}
// ===== Game Loop & Rendering =====
function gameLoop() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
drawWalls();
moveChar(pacman);
moveEnemy();
drawChar(pacman, "yellow");
drawChar(enemy, "red");
eatDots();
drawScore();
checkGameOver();
}
function drawWalls() {
ctx.fillStyle = "blue";
walls.forEach(w => {
ctx.fillRect(w.c * CELL_SIZE, w.r * CELL_SIZE, CELL_SIZE, CELL_SIZE);
});
}
function drawChar(ch, color) {
ctx.beginPath();
ctx.arc(ch.x, ch.y, ch.size, 0, Math.PI * 2);
ctx.fillStyle = color;
ctx.fill();
}
function drawScore() {
ctx.fillStyle = "white";
ctx.font = "20px Poppins";
ctx.textAlign = "left";
// Add padding to prevent clipping
const padding = 10;
ctx.fillText("Score: " + score, padding, 25);
}
function checkGameOver() {
if (
Math.abs(pacman.x - enemy.x) < pacman.size &&
Math.abs(pacman.y - enemy.y) < pacman.size
) {
ctx.fillStyle = "#00ff99";
ctx.font = "40px Poppins";
ctx.textAlign = "center";
ctx.fillText("Game Over!", canvas.width / 2, canvas.height / 2);
clearInterval(gameInterval);
}
}
// ===== Movement Logic =====
function movePacman(e) {
const k = e.key;
if (!["ArrowUp", "ArrowDown", "ArrowLeft", "ArrowRight"].includes(k)) return;
e.preventDefault();
if (k === "ArrowUp") { pacman.dx = 0; pacman.dy = -PACMAN_SPEED; }
if (k === "ArrowDown") { pacman.dx = 0; pacman.dy = PACMAN_SPEED; }
if (k === "ArrowLeft") { pacman.dx = -PACMAN_SPEED; pacman.dy = 0; }
if (k === "ArrowRight") { pacman.dx = PACMAN_SPEED; pacman.dy = 0; }
}
function moveChar(ch) {
const nx = ch.x + ch.dx;
const ny = ch.y + ch.dy;
if (!willCollide(nx, ny, ch.size)) {
ch.x = nx;
ch.y = ny;
}
}
function moveEnemy() {
const options = [];
const moves = [[ENEMY_SPEED, 0], [-ENEMY_SPEED, 0], [0, ENEMY_SPEED], [0, -ENEMY_SPEED]];
moves.forEach(([dx, dy]) => {
const nx = enemy.x + dx;
const ny = enemy.y + dy;
if (!willCollide(nx, ny, enemy.size)) options.push({ dx, dy });
});
if (!options.length) return;
let best = options[0];
let bestDist = dist(enemy.x + best.dx, enemy.y + best.dy, pacman.x, pacman.y);
for (const opt of options) {
const d = dist(enemy.x + opt.dx, enemy.y + opt.dy, pacman.x, pacman.y);
if (d < bestDist) {
best = opt;
bestDist = d;
}
}
enemy.x += best.dx;
enemy.y += best.dy;
}
function dist(x1, y1, x2, y2) {
return Math.abs(x1 - x2) + Math.abs(y1 - y2);
}
function willCollide(x, y, size) {
const left = x - size, right = x + size;
const top = y - size, bottom = y + size;
return walls.some(w => {
const wx1 = w.c * CELL_SIZE, wy1 = w.r * CELL_SIZE;
const wx2 = wx1 + CELL_SIZE, wy2 = wy1 + CELL_SIZE;
return right > wx1 && left < wx2 && bottom > wy1 && top < wy2;
});
}
function eatDots() {
const chompSound = document.getElementById("chomp-sound");
dots = dots.filter(d => {
const dx = d.c * CELL_SIZE + CELL_SIZE / 2;
const dy = d.r * CELL_SIZE + CELL_SIZE / 2;
if (Math.abs(pacman.x - dx) < pacman.size && Math.abs(pacman.y - dy) < pacman.size) {
score++;
if (chompSound) {
chompSound.currentTime = 0;
chompSound.volume = 0.4;
chompSound.play();
}
return false;
}
return true;
});
// Check if all dots are eaten
if (dots.length === 0) {
// Trigger password generator for new random map
const generateBtn = document.getElementById("generate-btn");
if (generateBtn) {
generateBtn.click();
}
// Auto-restart the game after a short delay
setTimeout(() => {
resetGame();
}, 1000);
}
ctx.fillStyle = "white";
dots.forEach(d => {
ctx.beginPath();
ctx.arc(d.c * CELL_SIZE + CELL_SIZE / 2, d.r * CELL_SIZE + CELL_SIZE / 2, DOT_SIZE, 0, Math.PI * 2);
ctx.fill();
});
}
// ===== Global Functions =====
window.resetGame = resetGame;
window.exitGame = exitGame;
// Add scroll prevention function
function preventScroll(e) {
e.preventDefault();
}
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/**
* UI management module.
* Handles user interface interactions and form handling.
*/
import { encryptFile, decryptFile } from './fileops.js';
// ===== UI Initialization =====
export function setupUI() {
const removeBtn = document.getElementById("remove-file-btn");
if (removeBtn) {
removeBtn.style.display = "none";
}
initializeEventListeners();
}
function initializeEventListeners() {
const elements = {
encryptionType: document.getElementById("encryption-type"),
inputText: document.getElementById("input-text"),
form: document.getElementById("crypto-form"),
removeFileBtn: document.getElementById("remove-file-btn"),
clearAllBtn: document.getElementById("clear-all-btn"),
generateBtn: document.getElementById("generate-btn"),
copyPasswordBtn: document.getElementById("copy-btn"),
copyOutputBtn: document.getElementById("copy-output-btn"),
toggleSwitch: document.getElementById("operation-toggle"),
copyShareBtn: document.getElementById("copy-share-btn"),
shareLink: document.getElementById("share-link")
};
if (validateElements(elements)) {
setupElementListeners(elements);
}
}
function validateElements(elements) {
return elements.encryptionType && elements.inputText && elements.form &&
elements.removeFileBtn && elements.clearAllBtn && elements.generateBtn &&
elements.copyPasswordBtn && elements.toggleSwitch;
}
function setupElementListeners(elements) {
elements.encryptionType.addEventListener("change", toggleEncryptionOptions);
elements.inputText.addEventListener("input", handleInputChange);
elements.form.addEventListener("submit", handleSubmit);
elements.removeFileBtn.addEventListener("click", removeFile);
elements.clearAllBtn.addEventListener("click", clearAll);
elements.generateBtn.addEventListener("click", generateRandomPassword);
elements.copyPasswordBtn.addEventListener("click", () => copyToClipboard("generated-password", "password-copy-feedback"));
elements.copyOutputBtn?.addEventListener("click", () => copyToClipboard("output-text", "output-copy-feedback"));
elements.toggleSwitch.addEventListener("change", () => {
console.log("Mode:", elements.toggleSwitch.checked ? "Decrypt" : "Encrypt");
});
const fileInput = document.getElementById("file-input");
if (fileInput) {
fileInput.addEventListener("change", () => {
const removeBtn = document.getElementById("remove-file-btn");
if (removeBtn) {
removeBtn.style.display = fileInput.files.length > 0 ? "inline-block" : "none";
}
});
}
setupShareLinkListeners(elements);
}
function setupShareLinkListeners(elements) {
if (elements.copyShareBtn && elements.shareLink) {
elements.copyShareBtn.addEventListener("click", () => {
const linkText = elements.shareLink.textContent.trim();
navigator.clipboard.writeText(linkText).then(() => {
const feedback = document.getElementById("shared-link-feedback");
if (feedback) {
feedback.style.display = "block";
feedback.classList.add("show");
setTimeout(() => {
feedback.classList.remove("show");
setTimeout(() => {
feedback.style.display = "none";
}, 300);
}, 3000);
}
});
});
}
}
function toggleEncryptionOptions() {
const type = document.getElementById("encryption-type").value.trim().toLowerCase();
const passwordInputWrapper = document.getElementById("password-input");
const fileSection = document.querySelector("#encoding-section #file-section");
const isAdvanced = type.includes("advanced");
if (passwordInputWrapper) {
passwordInputWrapper.classList.toggle("hidden", !isAdvanced);
}
if (fileSection) {
fileSection.classList.toggle("hidden", !isAdvanced);
}
updateToggleLabels();
toggleInputMode();
}
function updateToggleLabels() {
const type = document.getElementById("encryption-type")?.value;
const leftLabel = document.getElementById("toggle-left-label");
const rightLabel = document.getElementById("toggle-right-label");
if (!type || !leftLabel || !rightLabel) return;
const isAdvanced = type.toLowerCase().includes("advanced");
leftLabel.textContent = isAdvanced ? "Encrypt" : "Encode";
rightLabel.textContent = isAdvanced ? "Decrypt" : "Decode";
}
function toggleInputMode() {
const fileInput = document.getElementById("file-input");
const textValue = document.getElementById("input-text")?.value.trim();
const isAdvanced = document.getElementById("encryption-type")?.value === "advanced";
const textSection = document.getElementById("text-section");
const fileSection = document.getElementById("file-section");
const removeBtn = document.getElementById("remove-file-btn");
if (!fileInput || !textSection || !fileSection || !removeBtn) return;
const fileSelected = fileInput.files.length > 0;
textSection.style.display = fileSelected ? "none" : "flex";
fileSection.style.display = (isAdvanced && !textValue) ? "flex" : "none";
removeBtn.style.display = fileSelected ? "inline-block" : "none";
}
async function handleSubmit(event) {
event.preventDefault();
const encryptionType = document.getElementById("encryption-type")?.value;
const password = document.getElementById("password")?.value;
const fileInput = document.getElementById("file-input");
const isDecrypt = document.getElementById("operation-toggle").checked;
const operation = isDecrypt ? "decrypt" : "encrypt";
if (!encryptionType || !fileInput) return;
if (encryptionType === "advanced" && !password) {
return alert("Password is required for advanced encryption.");
}
if (fileInput.files.length > 0) {
return (operation === "encrypt")
? encryptFile(fileInput, password)
: decryptFile(fileInput, password);
}
await handleTextOperation(encryptionType, operation, password);
}
async function handleTextOperation(encryptionType, operation, password) {
const payload = {
"encryption-type": encryptionType,
operation: operation,
message: document.getElementById("input-text")?.value,
password: password
};
try {
const response = await fetch("/", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify(payload)
});
const data = await response.json();
const outputField = document.getElementById("output-text");
if (outputField) {
outputField.value = data.result || "[Error] No response received.";
}
} catch (err) {
alert("Error processing request: " + err.message);
}
}
function removeFile() {
const fileInput = document.getElementById("file-input");
if (fileInput) fileInput.value = "";
const removeBtn = document.getElementById("remove-file-btn");
if (removeBtn) removeBtn.style.display = 'none';
toggleInputMode();
}
function generateRandomPassword() {
const charset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()_+[]{}|;:,.<>?/~";
const length = 30;
const password = Array.from({ length }, () =>
charset.charAt(Math.floor(Math.random() * charset.length))
).join("");
const passwordField = document.getElementById("generated-password");
if (passwordField) {
passwordField.value = password;
checkForPacman();
}
}
function copyToClipboard(elementId, feedbackId) {
const el = document.getElementById(elementId);
const feedback = document.getElementById(feedbackId);
if (!el || !el.value) return;
const textarea = document.createElement('textarea');
textarea.value = el.value;
textarea.style.position = 'fixed';
textarea.style.opacity = '0';
document.body.appendChild(textarea);
textarea.select();
textarea.setSelectionRange(0, 99999);
try {
navigator.clipboard.writeText(el.value).then(() => {
showFeedback(feedback);
}).catch(() => {
document.execCommand('copy');
showFeedback(feedback);
});
} catch (err) {
document.execCommand('copy');
showFeedback(feedback);
}
document.body.removeChild(textarea);
}
function showFeedback(feedback) {
if (feedback) {
feedback.style.display = "block";
feedback.classList.add("show");
setTimeout(() => {
feedback.classList.remove("show");
setTimeout(() => {
feedback.style.display = "none";
}, 300);
}, 3000);
}
}
function clearAll() {
const fields = ["input-text", "output-text", "file-input", "password"];
fields.forEach(id => {
const el = document.getElementById(id);
if (el) el.value = "";
});
removeFile();
toggleInputMode();
document.getElementById("pacman-section")?.style.setProperty("display", "none");
document.getElementById("encoding-section")?.style.setProperty("display", "block");
}
function handleInputChange() {
toggleInputMode();
checkForPacman();
}
function checkForPacman() {
const val = document.getElementById("input-text").value.trim().toLowerCase();
const pacSection = document.getElementById("pacman-section");
const encSection = document.getElementById("encoding-section");
if (val.includes("pacman") && pacSection.style.display !== "block") {
pacSection.style.display = "block";
encSection.style.display = "none";
window.startPacman();
} else if (pacSection.style.display === "block" && !val.includes("pacman")) {
window.exitGame();
}
}
function copyShareLink() {
const linkEl = document.getElementById("share-link");
const feedback = document.getElementById("shared-link-feedback");
if (!linkEl) return;
const linkText = linkEl.href || linkEl.textContent.trim();
if (navigator.clipboard && window.isSecureContext) {
navigator.clipboard.writeText(linkText).then(() => {
showCopyFeedback(feedback);
}).catch(() => {
fallbackCopy(linkText, feedback);
});
} else {
fallbackCopy(linkText, feedback);
}
}
function fallbackCopy(text, feedbackEl) {
const tempInput = document.createElement("input");
tempInput.value = text;
document.body.appendChild(tempInput);
tempInput.select();
try {
document.execCommand("copy");
showCopyFeedback(feedbackEl);
} catch (err) {
alert("Copy failed. Please copy manually.");
}
document.body.removeChild(tempInput);
}
function showCopyFeedback(feedbackEl) {
if (!feedbackEl) return;
feedbackEl.style.display = "block";
feedbackEl.classList.add("show");
setTimeout(() => {
feedbackEl.classList.remove("show");
setTimeout(() => {
feedbackEl.style.display = "none";
}, 300);
}, 3000);
}
function startPacman() { }
function exitGame() { }