520 lines
21 KiB
JavaScript
520 lines
21 KiB
JavaScript
document.addEventListener('DOMContentLoaded', () => {
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const loginForm = document.querySelector('.login-form');
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const loginContainer = document.querySelector('.login-container');
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const feedView = document.getElementById('feed-view');
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const emailInput = document.getElementById('email');
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const passwordInput = document.getElementById('password');
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const confirmPasswordInput = document.getElementById('confirm-password');
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const confirmPasswordGroup = document.getElementById('confirm-password-group');
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const submitBtn = document.querySelector('.btn-primary');
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const btnText = submitBtn.querySelector('span');
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const helperText = document.querySelector('.signup-link');
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const toggleLink = document.querySelector('.signup-link a');
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const title = document.querySelector('.brand-section h1');
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const subtitle = document.querySelector('.brand-section p');
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let isLoginMode = true;
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// Toggle between Login and Signup
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if (toggleLink) {
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toggleLink.addEventListener('click', (e) => {
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e.preventDefault();
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isLoginMode = !isLoginMode;
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updateUI();
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});
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}
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function updateUI() {
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if (isLoginMode) {
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title.innerText = 'Welcome Back';
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subtitle.innerText = 'Enter your details below';
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btnText.innerText = 'Sign In';
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helperText.innerHTML = 'Don\'t have an account? <a href="#">Create One</a>';
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confirmPasswordGroup.classList.add('hidden');
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confirmPasswordInput.required = false;
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} else {
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title.innerText = 'Create Account';
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subtitle.innerText = 'Start your journey with us';
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btnText.innerText = 'Sign Up';
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helperText.innerHTML = 'Already have an account? <a href="#">Sign In</a>';
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confirmPasswordGroup.classList.remove('hidden');
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confirmPasswordInput.required = true;
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}
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// Re-attach listener to the new link element
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const newLink = document.querySelector('.signup-link a');
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newLink.addEventListener('click', (e) => {
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e.preventDefault();
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isLoginMode = !isLoginMode;
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updateUI();
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});
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// Reset form and styles
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loginForm.reset();
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resetButton();
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}
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function resetButton() {
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submitBtn.style.background = '';
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submitBtn.style.transform = '';
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btnText.innerText = isLoginMode ? 'Sign In' : 'Sign Up';
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}
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function showFeedback(isSuccess, message) {
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btnText.innerText = message;
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if (isSuccess) {
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submitBtn.style.background = 'linear-gradient(135deg, #10B981 0%, #059669 100%)'; // Success Green
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} else {
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submitBtn.style.background = 'linear-gradient(135deg, #EF4444 0%, #B91C1C 100%)'; // Error Red
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submitBtn.animate([
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{ transform: 'translateX(0)' },
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{ transform: 'translateX(-5px)' },
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{ transform: 'translateX(5px)' },
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{ transform: 'translateX(0)' }
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], { duration: 300 });
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}
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setTimeout(() => {
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if (!message.includes('Success')) {
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resetButton();
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}
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}, 2000);
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}
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function navigateToFeed() {
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if (loginContainer && feedView) {
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// Fade out login
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loginContainer.style.opacity = '0';
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setTimeout(() => {
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loginContainer.classList.add('hidden');
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loginContainer.style.display = 'none'; // Ensure it's gone
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// Show Feed
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feedView.classList.remove('hidden');
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// Trigger reflow
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void feedView.offsetWidth;
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feedView.classList.add('fade-in');
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// Load persisted state for posts
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loadPostState();
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// Remove fade-in class after animation to fix fixed positioning context
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setTimeout(() => {
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feedView.classList.remove('fade-in');
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}, 600);
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}, 600); // Wait for transition
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}
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}
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if (loginForm) {
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loginForm.addEventListener('submit', (e) => {
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e.preventDefault();
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const email = emailInput.value.trim();
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const password = passwordInput.value.trim();
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const confirmPassword = confirmPasswordInput.value.trim();
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const timestamp = new Date().toISOString();
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// Get existing users
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const existingUsers = JSON.parse(localStorage.getItem('socialAppUsers') || '[]');
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if (isLoginMode) {
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// --- LOGIN LOGIC ---
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const user = existingUsers.find(u => u.email === email && u.password === password);
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if (user) {
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console.log('Login Successful:', user);
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showFeedback(true, 'Success!');
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setTimeout(navigateToFeed, 1000);
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} else {
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console.warn('Login Failed: Invalid credentials');
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showFeedback(false, 'Incorrect details');
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}
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} else {
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// --- SIGNUP LOGIC ---
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// 1. Check if user already exists
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if (existingUsers.some(u => u.email === email)) {
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showFeedback(false, 'User exists');
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return;
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}
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// 2. Validate Password Match
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if (password !== confirmPassword) {
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showFeedback(false, 'Passwords do not match');
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return;
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}
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const newUser = { email, password, joinedAt: timestamp };
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existingUsers.push(newUser);
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localStorage.setItem('socialAppUsers', JSON.stringify(existingUsers));
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console.log('New User Registered:', newUser);
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showFeedback(true, 'Account Created!');
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// Switch to login mode after success
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setTimeout(() => {
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isLoginMode = true;
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updateUI();
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setTimeout(navigateToFeed, 1000);
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}, 1500);
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}
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});
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}
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// --- PERSISTENCE LOGIC ---
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function getPostState() {
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return JSON.parse(localStorage.getItem('socialAppPostState') || '{}');
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}
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function savePostState(state) {
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localStorage.setItem('socialAppPostState', JSON.stringify(state));
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}
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function loadPostState() {
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const state = getPostState();
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const posts = document.querySelectorAll('.post-card');
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posts.forEach(card => {
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const id = card.getAttribute('data-post-id');
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if (id && state[id]) {
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const data = state[id];
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// Restore Likes
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const likeIcon = card.querySelector('.heart-icon');
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const likesText = card.querySelector('.likes');
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if (data.liked) {
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likeIcon.classList.add('liked');
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likeIcon.style.fill = '#EF4444';
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likeIcon.style.stroke = '#EF4444';
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} else {
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likeIcon.classList.remove('liked');
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likeIcon.style.fill = 'none';
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likeIcon.style.stroke = 'white';
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}
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likesText.innerText = data.likesCount + ' likes';
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// Restore Comments
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const commentsContainer = card.querySelector('.added-comments');
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commentsContainer.innerHTML = ''; // Clear existing to prevent dupes on re-run
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if (data.comments && data.comments.length > 0) {
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data.comments.forEach(text => {
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const commentEl = document.createElement('div');
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commentEl.classList.add('comment-item');
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commentEl.innerHTML = `<span class="comment-user">you</span> ${text}`;
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commentsContainer.appendChild(commentEl);
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});
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}
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}
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});
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}
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// --- FEED INTERACTIONS ---
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if (feedView) {
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feedView.addEventListener('click', (e) => {
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const target = e.target;
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// 1. LIKE ACTION
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const likeBtn = target.closest('.heart-icon')?.closest('.icon-btn');
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if (likeBtn) {
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const icon = likeBtn.querySelector('.heart-icon');
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const postCard = likeBtn.closest('.post-card');
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const likesText = postCard.querySelector('.likes');
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const postId = postCard.getAttribute('data-post-id');
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// Toggle State
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icon.classList.toggle('liked');
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// Update Count (Simple parsing)
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let count = parseInt(likesText.innerText);
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let isLiked = false;
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if (icon.classList.contains('liked')) {
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icon.style.fill = '#EF4444';
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icon.style.stroke = '#EF4444';
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count++;
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isLiked = true;
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} else {
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icon.style.fill = 'none';
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icon.style.stroke = 'white';
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count--;
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isLiked = false;
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}
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likesText.innerText = count + ' likes';
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// Save State
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if (postId) {
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const state = getPostState();
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if (!state[postId]) state[postId] = { comments: [] };
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state[postId].liked = isLiked;
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state[postId].likesCount = count;
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// Preserve existing comments if we didn't just load them
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if (!state[postId].comments) state[postId].comments = [];
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savePostState(state);
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}
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return;
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}
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// 2. COMMENT TOGGLE ACTION
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const commentBtn = target.closest('.icon-btn');
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if (commentBtn && !commentBtn.querySelector('.heart-icon')) {
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// Check if it's the comment button (has specific path)
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const path = commentBtn.querySelector('path');
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if (path && (path.getAttribute('d').startsWith('M21 11.5') || path.closest('svg')?.innerHTML.includes('M21 11.5'))) {
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const postCard = commentBtn.closest('.post-card');
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const commentSection = postCard.querySelector('.comment-section');
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commentSection.classList.toggle('active');
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if (commentSection.classList.contains('active')) {
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commentSection.querySelector('input').focus();
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}
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return;
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}
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}
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// 3. POST COMMENT ACTION
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if (target.classList.contains('post-btn')) {
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const wrapper = target.closest('.comment-input-wrapper');
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const input = wrapper.querySelector('.comment-input');
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const text = input.value.trim();
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const postCard = wrapper.closest('.post-card');
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const postId = postCard.getAttribute('data-post-id');
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if (text) {
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addComment(wrapper.closest('.comment-section'), text);
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if (postId) {
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const state = getPostState();
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if (!state[postId]) state[postId] = { liked: false, likesCount: parseInt(postCard.querySelector('.likes').innerText) || 0, comments: [] };
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if (!state[postId].comments) state[postId].comments = [];
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state[postId].comments.push(text);
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savePostState(state);
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}
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input.value = '';
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}
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}
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});
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// Enter key for comments
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feedView.addEventListener('keydown', (e) => {
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if (e.key === 'Enter' && e.target.classList.contains('comment-input')) {
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const text = e.target.value.trim();
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const wrapper = e.target.closest('.comment-input-wrapper');
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const postCard = wrapper.closest('.post-card');
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const postId = postCard.getAttribute('data-post-id');
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if (text) {
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addComment(e.target.closest('.comment-section'), text);
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if (postId) {
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const state = getPostState();
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if (!state[postId]) state[postId] = { liked: false, likesCount: parseInt(postCard.querySelector('.likes').innerText) || 0, comments: [] };
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if (!state[postId].comments) state[postId].comments = [];
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state[postId].comments.push(text);
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savePostState(state);
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}
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e.target.value = '';
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}
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}
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});
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}
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function addComment(section, text) {
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const container = section.querySelector('.added-comments');
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const commentEl = document.createElement('div');
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commentEl.classList.add('comment-item');
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commentEl.innerHTML = `<span class="comment-user">you</span> ${text}`;
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container.appendChild(commentEl);
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}
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// --- CREATE POST LOGIC ---
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const createPostView = document.getElementById('create-post-view');
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const cancelPostBtn = document.getElementById('cancel-post-btn');
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const sharePostBtn = document.getElementById('share-post-btn');
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const uploadTrigger = document.getElementById('upload-trigger');
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const imageInput = document.getElementById('post-image-input');
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const imagePreview = document.getElementById('image-preview');
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const captionInput = document.getElementById('post-caption-input');
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const navPostBtn = document.querySelector('.nav-btn:nth-child(2)'); // Center Post Button
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const navHomeBtn = document.querySelector('.nav-btn:first-child');
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// 1. Navigation
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if (navPostBtn) {
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navPostBtn.addEventListener('click', () => {
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feedView.classList.add('hidden');
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createPostView.classList.remove('hidden');
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createPostView.classList.add('fade-in');
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});
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}
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if (cancelPostBtn) {
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cancelPostBtn.addEventListener('click', () => {
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resetPostForm();
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createPostView.classList.add('hidden');
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feedView.classList.remove('hidden');
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});
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}
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if (navHomeBtn && feedView.classList.contains('hidden') && !createPostView.classList.contains('hidden')) {
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// Logic handled by cancel mostly, but good to have explicit nav
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navHomeBtn.addEventListener('click', () => {
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if (!createPostView.classList.contains('hidden')) {
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resetPostForm();
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createPostView.classList.add('hidden');
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feedView.classList.remove('hidden');
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}
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});
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}
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// 2. Image Selection
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if (uploadTrigger) {
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uploadTrigger.addEventListener('click', () => imageInput.click());
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}
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if (imageInput) {
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imageInput.addEventListener('change', (e) => {
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const file = e.target.files[0];
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if (file) {
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const reader = new FileReader();
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reader.onload = (e) => {
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imagePreview.src = e.target.result;
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imagePreview.classList.remove('hidden');
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document.querySelector('.upload-placeholder').classList.add('hidden');
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};
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reader.readAsDataURL(file);
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}
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});
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}
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// 3. Share Post
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if (sharePostBtn) {
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sharePostBtn.addEventListener('click', () => {
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if (!imagePreview.src || imagePreview.classList.contains('hidden')) {
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alert('Please select an image first.');
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return;
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}
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const caption = captionInput.value.trim();
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const imageSrc = imagePreview.src;
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const id = 'post_' + Date.now();
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const newPost = {
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id,
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imageSrc,
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caption,
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timestamp: new Date().toISOString(),
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username: 'you', // Mock user
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likes: 0
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};
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// Save to LocalStorage
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const userPosts = JSON.parse(localStorage.getItem('socialAppUserPosts') || '[]');
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userPosts.unshift(newPost); // Add to top
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localStorage.setItem('socialAppUserPosts', JSON.stringify(userPosts));
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// Render to Feed
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renderPost(newPost, true); // true = prepend
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// Reset and Go Back
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resetPostForm();
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createPostView.classList.add('hidden');
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feedView.classList.remove('hidden');
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// Re-bind listeners isn't needed strictly due to delegation, but state refresh might be
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loadPostState();
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});
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}
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function resetPostForm() {
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imageInput.value = '';
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captionInput.value = '';
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imagePreview.src = '';
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imagePreview.classList.add('hidden');
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document.querySelector('.upload-placeholder').classList.remove('hidden');
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}
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function renderPost(post, prepend = false) {
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const feedContainer = document.querySelector('.feed-container');
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const article = document.createElement('article');
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article.className = 'post-card';
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article.setAttribute('data-post-id', post.id);
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article.innerHTML = `
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<div class="post-header">
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<div class="post-user">
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<img src="https://i.pravatar.cc/150?img=12" alt="User" class="avatar-sm">
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<span class="username">${post.username}</span>
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</div>
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<button class="icon-btn-sm">...</button>
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</div>
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<div class="post-image">
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<img src="${post.imageSrc}" alt="Post">
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</div>
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<div class="post-actions">
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<div class="action-left">
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<button class="icon-btn"><svg viewBox="0 0 24 24" width="24" height="24" stroke="white" fill="none" class="heart-icon"><path d="M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z"></path></svg></button>
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<button class="icon-btn"><svg viewBox="0 0 24 24" width="24" height="24" stroke="white" fill="none"><path d="M21 11.5a8.38 8.38 0 0 1-.9 3.8 8.5 8.5 0 0 1-7.6 4.7 8.38 8.38 0 0 1-3.8-.9L3 21l1.9-5.7a8.38 8.38 0 0 1-.9-3.8 8.5 8.5 0 0 1 4.7-7.6 8.38 8.38 0 0 1 3.8-.9h.5a8.48 8.48 0 0 1 8 8v.5z"></path></svg></button>
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</div>
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<button class="icon-btn"><svg viewBox="0 0 24 24" width="24" height="24" stroke="white" fill="none"><path d="M19 21l-7-5-7 5V5a2 2 0 0 1 2-2h10a2 2 0 0 1 2 2z"></path></svg></button>
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</div>
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<div class="post-content">
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<span class="likes">0 likes</span>
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<p><span class="username">${post.username}</span> ${post.caption}</p>
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</div>
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<div class="comment-section">
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<div class="added-comments"></div>
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<div class="comment-input-wrapper">
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<input type="text" class="comment-input" placeholder="Add a comment...">
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<button class="post-btn">Post</button>
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</div>
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</div>
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`;
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// This is a bit tricky with existing static posts.
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// Ideally we keep static posts static and just inject dynamic ones.
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if (prepend) {
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feedContainer.insertBefore(article, feedContainer.firstChild);
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// Note: index.html has static articles directly. `firstChild` might be text node or first article.
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// A safer insert would be after the first spacer if I had one, or simply `prepend`.
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// Let's use `prepend` on the container, but strict ordering might be weird with existing static HTML.
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// Actually, `prepend` puts it before the first child, which IS the first post card. Perfect.
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} else {
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feedContainer.appendChild(article);
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}
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}
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// Load User Posts on Init
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const savedUserPosts = JSON.parse(localStorage.getItem('socialAppUserPosts') || '[]');
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savedUserPosts.forEach(post => {
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// Check if already in DOM to avoid dupes (simple check)
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if (!document.querySelector(`[data-post-id="${post.id}"]`)) {
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renderPost(post, true); // Keep order inverted?
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// If we loop saved posts [newest, ..., oldest], we should Append?
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// Actually saved as [newest, oldest].
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// If we prepend one by one:
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// 1. Newest -> Prepend -> Top.
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// 2. Oldest -> Prepend -> Top (Wrong).
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// So we should iterate in reverse if we prepend, OR just append at top once properly sorted.
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// Let's keep it simple: Iterate in reverse order [oldest ... newest] and prepend each, so newest ends up on top.
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}
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});
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// Fix order: Reverse iteration for prepend logic
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// savedUserPosts.reverse().forEach(...) -> Wait, `unshift` adds to start. So [0] is newest.
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// Loop:
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// Post 0 (Newest) -> Prepend (become first).
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// Post 1 (Older) -> Prepend (become first).
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// Result: Post 1 is above Post 0. WRONG.
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// Correct: Iterate from last to first (reverse) and prepend.
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// Post Last (Oldest) -> Prepend.
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// ...
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// Post 0 (Newest) -> Prepend (Top). CORRECT.
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// So:
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[...savedUserPosts].reverse().forEach(post => {
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if (!document.querySelector(`[data-post-id="${post.id}"]`)) {
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renderPost(post, true);
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}
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});
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});
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