Initial commit: PRAutoBlogger v0.1.0 with frontend posts widget
This commit is contained in:
Terence Ong
350
assets/js/posts-widget.js
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350
assets/js/posts-widget.js
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/**
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* PRAutoBlogger Posts Widget — React Frontend Component
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*
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* Uses wp.element (WordPress-bundled React) — no build step needed.
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* Fetches posts from the plugin's REST API and renders a card grid.
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*
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* @see includes/frontend/class-posts-widget.php — Registers the shortcode and REST endpoint.
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* @see assets/css/posts-widget.css — Styles for all widget states.
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*/
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/* global wp, prabPostsWidget */
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(function () {
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'use strict';
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var el = wp.element.createElement;
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var useState = wp.element.useState;
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var useEffect = wp.element.useEffect;
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/**
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* SVG icon components — inline to avoid external dependencies.
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*/
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var ClockIcon = function () {
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return el('svg', {
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viewBox: '0 0 24 24', fill: 'none', stroke: 'currentColor', strokeWidth: '2'
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},
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el('circle', { cx: '12', cy: '12', r: '10' }),
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el('polyline', { points: '12 6 12 12 16 14' })
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);
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};
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var ArrowIcon = function () {
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return el('svg', {
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viewBox: '0 0 24 24', fill: 'none', stroke: 'currentColor', strokeWidth: '2'
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},
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el('path', { d: 'M5 12h14M12 5l7 7-7 7' })
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);
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};
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var BookIcon = function () {
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return el('svg', {
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viewBox: '0 0 24 24', fill: 'none', stroke: 'currentColor', strokeWidth: '1.5'
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},
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el('path', { d: 'M12 6.042A8.967 8.967 0 006 3.75c-1.052 0-2.062.18-3 .512v14.25A8.987 8.987 0 016 18c2.305 0 4.408.867 6 2.292m0-14.25a8.966 8.966 0 016-2.292c1.052 0 2.062.18 3 .512v14.25A8.987 8.987 0 0018 18a8.967 8.967 0 00-6 2.292m0-14.25v14.25' })
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);
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};
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var DocumentIcon = function () {
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return el('svg', {
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viewBox: '0 0 24 24', fill: 'none', stroke: 'currentColor', strokeWidth: '1.5'
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},
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el('path', { d: 'M19.5 14.25v-2.625a3.375 3.375 0 00-3.375-3.375h-1.5A1.125 1.125 0 0113.5 7.125v-1.5a3.375 3.375 0 00-3.375-3.375H8.25m0 12.75h7.5m-7.5 3H12M10.5 2.25H5.625c-.621 0-1.125.504-1.125 1.125v17.25c0 .621.504 1.125 1.125 1.125h12.75c.621 0 1.125-.504 1.125-1.125V11.25a9 9 0 00-9-9z' })
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);
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};
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/**
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* Map category slug to a CSS modifier class.
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*
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* @param {string} categorySlug The category slug from the REST API.
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* @return {string} CSS class suffix.
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*/
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function getCategoryClass(categorySlug) {
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var slug = (categorySlug || '').toLowerCase();
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var map = {
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guides: 'guides',
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solutions: 'solutions',
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comparisons: 'comparisons',
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articles: 'articles'
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};
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return map[slug] || 'default';
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}
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/**
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* Format a date string to "Mon DD, YYYY".
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*
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* @param {string} dateStr ISO 8601 date string.
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* @return {string} Formatted date.
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*/
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function formatDate(dateStr) {
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var date = new Date(dateStr);
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if (isNaN(date.getTime())) {
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return 'Recent';
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}
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var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
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'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
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return months[date.getMonth()] + ' ' + date.getDate() + ', ' + date.getFullYear();
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}
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/**
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* Estimate reading time from word count.
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*
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* @param {number} wordCount Number of words.
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* @return {number} Minutes to read (minimum 1).
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*/
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function readingTime(wordCount) {
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return Math.max(1, Math.round((wordCount || 0) / 250));
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}
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/**
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* Strip HTML tags from a string.
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*
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* Uses a DOMParser to safely parse HTML without executing scripts.
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* Falls back to regex stripping if DOMParser is unavailable.
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*
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* @param {string} html HTML string.
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* @return {string} Plain text.
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*/
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function stripHtml(html) {
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if (!html) {
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return '';
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}
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if (typeof DOMParser !== 'undefined') {
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var doc = new DOMParser().parseFromString(html, 'text/html');
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return doc.body.textContent || '';
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}
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// Fallback: regex strip (less accurate but safe).
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return html.replace(/<[^>]*>/g, '');
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}
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/**
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* Single post card component.
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*/
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var PostCard = function (props) {
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var post = props.post;
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var catClass = getCategoryClass(post.category_slug);
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var minutes = readingTime(post.word_count);
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var excerpt = stripHtml(post.excerpt);
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// Choose placeholder icon based on category
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var PlaceholderIcon = post.category_slug === 'guides' ? BookIcon : DocumentIcon;
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return el('a', {
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href: post.url || '#',
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className: 'prab-post-card',
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'aria-label': post.title
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},
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// Image area
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post.featured_image
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? el('div', { className: 'prab-post-image' },
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el('img', {
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src: post.featured_image,
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alt: post.title || '',
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loading: 'lazy',
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decoding: 'async'
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})
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)
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: el('div', { className: 'prab-post-image prab-post-image--placeholder' },
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el(PlaceholderIcon)
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),
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// Body
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el('div', { className: 'prab-post-body' },
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// Meta row
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el('div', { className: 'prab-post-meta' },
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post.category_name
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? el('span', {
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className: 'prab-badge prab-badge--' + catClass
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}, post.category_name)
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: null,
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el('span', { className: 'prab-post-date' }, formatDate(post.date))
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),
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// Title
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el('h3', { className: 'prab-post-title' }, post.title),
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// Excerpt
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el('p', { className: 'prab-post-excerpt' }, excerpt),
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// Footer
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el('div', { className: 'prab-post-footer' },
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el('span', { className: 'prab-reading-time' },
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el(ClockIcon),
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minutes + ' min read'
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),
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el('span', { className: 'prab-read-more' },
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'Read article',
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el(ArrowIcon)
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)
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)
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)
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);
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};
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/**
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* Loading skeleton card.
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*/
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var SkeletonCard = function () {
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return el('div', { className: 'prab-post-card', style: { pointerEvents: 'none' } },
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el('div', { className: 'prab-skeleton prab-skeleton-image' }),
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el('div', { className: 'prab-post-body' },
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el('div', { className: 'prab-post-meta' },
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el('div', { className: 'prab-skeleton prab-skeleton-badge' })
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),
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el('div', { className: 'prab-skeleton prab-skeleton-title' }),
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el('div', { className: 'prab-skeleton prab-skeleton-title-2' }),
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el('div', { className: 'prab-skeleton prab-skeleton-text', style: { marginTop: '8px' } }),
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el('div', { className: 'prab-skeleton prab-skeleton-text-2' })
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)
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);
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};
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/**
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* Empty state component.
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*/
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var EmptyState = function () {
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return el('div', { className: 'prab-empty-state' },
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el(DocumentIcon),
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el('h3', null, 'No articles yet'),
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el('p', null, 'New research articles will appear here once they\'re published. Check back soon!')
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);
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};
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/**
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* Error state component.
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*/
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var ErrorState = function (props) {
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return el('div', { className: 'prab-error-state' },
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el('p', null, props.message || 'Unable to load articles. Please try again later.')
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);
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};
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/**
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* Main widget component.
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*
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* Fetches posts from the REST API on mount and renders the appropriate state.
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*/
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var PostsWidget = function (props) {
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var config = props.config || {};
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var count = config.count || 6;
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var title = config.title || 'Latest Research & Insights';
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var subtitle = config.subtitle || 'Evidence-based articles on peptides, protocols, and emerging research';
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var category = config.category || '';
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var archiveUrl = config.archiveUrl || '';
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var stateArr = useState('loading');
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var state = stateArr[0];
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var setState = stateArr[1];
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var postsArr = useState([]);
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var posts = postsArr[0];
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var setPosts = postsArr[1];
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var errorArr = useState('');
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var error = errorArr[0];
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var setError = errorArr[1];
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useEffect(function () {
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if (!config.restUrl) {
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setError('Widget misconfigured: REST URL not available.');
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setState('error');
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return;
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}
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var url = config.restUrl + '?per_page=' + count;
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if (category) {
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url += '&category=' + encodeURIComponent(category);
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}
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fetch(url)
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.then(function (response) {
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if (!response.ok) {
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throw new Error('HTTP ' + response.status);
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}
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return response.json();
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})
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.then(function (data) {
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setPosts(data);
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setState(data.length > 0 ? 'loaded' : 'empty');
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})
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.catch(function (err) {
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setError(err.message);
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setState('error');
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});
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}, []); // Fetch only on mount; results persist for page lifetime.
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// Build children array
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var children = [];
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// Header
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children.push(
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el('div', { className: 'prab-widget-header', key: 'header' },
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el('h2', null, title),
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el('p', null, subtitle)
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)
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);
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// Content based on state
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if (state === 'loading') {
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var skeletons = [];
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for (var i = 0; i < Math.min(count, 3); i++) {
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skeletons.push(el(SkeletonCard, { key: 'skeleton-' + i }));
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}
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children.push(el('div', { className: 'prab-posts-grid', key: 'grid' }, skeletons));
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} else if (state === 'empty') {
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children.push(el(EmptyState, { key: 'empty' }));
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} else if (state === 'error') {
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children.push(el(ErrorState, { key: 'error', message: error }));
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} else {
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// Loaded
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var cards = posts.map(function (post) {
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return el(PostCard, { key: post.id, post: post });
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});
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children.push(el('div', { className: 'prab-posts-grid', key: 'grid' }, cards));
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// "View all" link
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if (archiveUrl) {
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children.push(
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el('div', { className: 'prab-view-all', key: 'viewall' },
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el('a', { href: archiveUrl },
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'View all articles',
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el(ArrowIcon)
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)
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)
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);
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}
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}
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return el('div', { className: 'prab-posts-widget' }, children);
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};
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/**
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* Mount the widget into the DOM.
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*
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* Reads configuration from the global `prabPostsWidget` object
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* set by wp_localize_script in the PHP class.
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*/
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function mount() {
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var root = document.getElementById('prab-posts-root');
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if (!root) {
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return;
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}
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var config = window.prabPostsWidget || {};
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wp.element.render(
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el(PostsWidget, { config: config }),
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root
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);
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}
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// Mount when DOM is ready.
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if (document.readyState === 'loading') {
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document.addEventListener('DOMContentLoaded', mount);
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} else {
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mount();
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}
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})();
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