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profile-front/src/components/ContentGrid.astro

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---
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import CategoryBadge from './CategoryBadge.astro';
import Author from '@components/AuthorDisplay.astro';
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export interface Props {
items: any[];
showCount?: boolean;
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type: 'latest' | 'category' | 'author' | 'tag';
slug?: string;
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pageInfo?: {
hasNextPage: boolean;
endCursor: string | null;
};
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perLoad?: number; // Больше не используется, но оставляем для обратной совместимости
gridColumns?: 3 | 4;
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}
const {
items = [],
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showCount = false,
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type = 'latest',
slug = '',
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pageInfo = { hasNextPage: false, endCursor: null },
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perLoad = 11, // Игнорируется
gridColumns = 4
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} = Astro.props;
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// Конфиг без perLoad, так как будем вычислять на клиенте
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const loadMoreConfig = {
type,
slug,
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gridColumns
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};
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function getCoauthorsNames(coauthors: any[]): string {
if (!coauthors || coauthors.length === 0) return '';
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return coauthors
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.map((coauthor: any) => {
const name = coauthor?.node?.name || coauthor?.name;
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return name;
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})
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.filter(Boolean)
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.join(', ');
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}
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function shouldBeLarge(index: number, columns: number): boolean {
if (columns === 4) {
// Паттерн для 4 колонок: большие на позициях 8, 19, 30, 41...
if (index < 8) return false;
return (index - 8) % 11 === 0;
} else {
// Паттерн для 3 колонок: большие на позициях 6, 14, 22, 30...
if (index < 6) return false;
return (index - 6) % 8 === 0;
}
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}
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---
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<section class="posts-section" id="posts-section">
<h2>
{showCount && items.length > 0 && (
<span id="posts-count"> ({items.length})</span>
)}
</h2>
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<div
id="posts-grid"
class="posts-grid"
data-grid-columns={gridColumns}
class:list={[`posts-grid-${gridColumns}`]}
>
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{items.map((item, index) => {
const postUrl = item.uri || `/blog/${item.databaseId}`;
const postDate = new Date(item.date);
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const isLarge = shouldBeLarge(index, gridColumns);
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return (
<article
class={`post-card ${isLarge ? 'post-card-large' : ''}`}
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data-large={isLarge}
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data-index={index}
itemscope
itemtype="https://schema.org/BlogPosting"
>
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<div class="post-image-container">
{item.featuredImage?.node?.sourceUrl ? (
<img
src={item.featuredImage.node.sourceUrl}
alt={item.featuredImage.node.altText || item.title}
width="400"
height="400"
loading="lazy"
class="post-image"
itemprop="image"
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/>
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) : (
<div class="post-image-placeholder"></div>
)}
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{item.categories?.nodes?.[0] && (
<CategoryBadge
name={item.categories.nodes[0].name}
color={item.categories.nodes[0].color}
href={`/${item.categories.nodes[0].slug}`}
isNews={item.__typename === "ANew"}
/>
)}
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<div class="post-content-overlay">
<div class="post-meta-overlay">
<time
datetime={item.date}
class="post-date-overlay"
itemprop="datePublished"
>
{postDate.toLocaleDateString('ru-RU', {
day: 'numeric',
month: 'short',
year: 'numeric'
}).replace(' г.', '')}
</time>
</div>
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<a href={postUrl} class="post-title-link" itemprop="url">
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<h3 class="post-title-overlay" itemprop="headline">
{item.title}
</h3>
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</a>
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{item.coauthors && item.coauthors.length > 0 && (
<div class="coauthors-wrapper" itemprop="author">
{item.coauthors.map((coauthor: any, i: number) => {
const name = coauthor?.node?.name || coauthor?.name;
const nickname = coauthor?.node?.nickname || coauthor?.nickname;
return (
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<span class="author-name" key={nickname || name}>
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{i > 0 && ', '}
{nickname ? (
<a
href={`/author/${nickname}`}
class="author-link"
onClick={(e) => e.stopPropagation()}
>
{name}
</a>
) : (
<span class="author-name">{name}</span>
)}
</span>
);
})}
</div>
)}
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</div>
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</div>
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<div class="sr-only">
<h3 itemprop="headline">
<a href={postUrl} itemprop="url">{item.title}</a>
</h3>
<time
datetime={item.date}
itemprop="datePublished"
>
{postDate.toLocaleDateString('ru-RU')}
</time>
</div>
</article>
);
})}
</div>
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<div id="loading-indicator" class="loading-indicator" style="display: none;">
<div class="loading-spinner"></div>
<p>Загрузка...</p>
</div>
<div id="no-more-posts" class="no-more-posts" style="display: none;">
Все статьи загружены
</div>
{pageInfo.hasNextPage && (
<div
id="infinity-scroll-sentinel"
data-end-cursor={pageInfo.endCursor}
data-load-config={JSON.stringify(loadMoreConfig)}
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data-current-index={items.length}
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data-grid-columns={gridColumns}
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></div>
)}
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</section>
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<script>
class InfinityScroll {
private grid: HTMLElement | null;
private sentinel: HTMLElement | null;
private loadingIndicator: HTMLElement | null;
private noMorePosts: HTMLElement | null;
private postsCount: HTMLElement | null;
private observer: IntersectionObserver | null = null;
private isLoading = false;
private hasMore = true;
private endCursor: string | null = null;
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private currentIndex: number;
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private gridColumns: 3 | 4 = 4;
// Константы для разных сеток
private readonly CYCLE_LENGTH = {
3: 14, // Полный цикл для 3 колонок: 6 обычных + 1 большая + 6 обычных + 1 большая
4: 19 // Полный цикл для 4 колонок: 8 обычных + 1 большая + 9 обычных + 1 большая
};
private readonly OPTIMAL_LOADS = {
3: [9, 12, 15], // 3, 4, 5 полных рядов
4: [12, 16, 20] // 3, 4, 5 полных рядов
};
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constructor() {
this.grid = document.getElementById('posts-grid');
this.sentinel = document.getElementById('infinity-scroll-sentinel');
this.loadingIndicator = document.getElementById('loading-indicator');
this.noMorePosts = document.getElementById('no-more-posts');
this.postsCount = document.getElementById('posts-count');
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if (!this.sentinel) return;
this.endCursor = this.sentinel.dataset.endCursor || null;
this.currentIndex = parseInt(this.sentinel.dataset.currentIndex || '0');
this.gridColumns = parseInt(this.sentinel.dataset.gridColumns || '4') as 3 | 4;
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this.init();
}
private init() {
if (!this.sentinel || !this.grid) return;
this.observer = new IntersectionObserver(
(entries) => {
entries.forEach((entry) => {
if (entry.isIntersecting && !this.isLoading && this.hasMore) {
this.loadMorePosts();
}
});
},
{
rootMargin: '200px',
threshold: 0.1
}
);
this.observer.observe(this.sentinel);
}
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/**
* Главная функция: определяет оптимальное количество постов для загрузки
* Гарантирует, что после загрузки не будет "дырок" в сетке
*/
private getOptimalLoadCount(): number {
const columns = this.gridColumns;
const cycleLength = this.CYCLE_LENGTH[columns];
const position = this.currentIndex % cycleLength;
const options = this.OPTIMAL_LOADS[columns];
// Выбираем оптимальное число в зависимости от позиции в цикле
if (position < columns) {
// Мы в начале цикла - можно загрузить 3 полных ряда
return options[0];
} else if (position < columns * 2) {
// Мы в середине цикла - лучше загрузить 4 полных ряда
return options[1];
} else {
// Мы ближе к концу цикла - загружаем 5 полных рядов
return options[2];
}
}
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private async loadMorePosts() {
if (this.isLoading || !this.hasMore) return;
this.isLoading = true;
this.showLoading();
try {
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const loadCount = this.getOptimalLoadCount();
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const response = await fetch('/load-more-posts', {
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method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({
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perLoad: loadCount, // Используем оптимальное число
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after: this.endCursor,
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type: this.loadMoreConfig?.type || 'latest',
slug: this.loadMoreConfig?.slug || '',
startIndex: this.currentIndex,
gridColumns: this.gridColumns
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})
});
if (!response.ok) {
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throw new Error(`Ошибка загрузки: ${response.status}`);
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}
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const html = await response.text();
const temp = document.createElement('div');
temp.innerHTML = html;
const newSentinel = temp.querySelector('#infinity-scroll-sentinel');
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const hasNextPage = !!newSentinel;
const newEndCursor = newSentinel?.dataset.endCursor || null;
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const articles = temp.querySelectorAll('article');
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if (articles.length > 0) {
const fragment = document.createDocumentFragment();
articles.forEach(article => fragment.appendChild(article.cloneNode(true)));
this.grid?.appendChild(fragment);
this.currentIndex += articles.length;
this.endCursor = newEndCursor;
this.hasMore = hasNextPage;
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if (this.postsCount) {
this.postsCount.textContent = ` (${this.currentIndex})`;
}
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if (this.sentinel) {
this.sentinel.dataset.currentIndex = String(this.currentIndex);
this.sentinel.dataset.endCursor = newEndCursor || '';
if (!hasNextPage) {
this.showNoMorePosts();
}
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}
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} else {
this.hasMore = false;
this.showNoMorePosts();
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}
} catch (error) {
console.error('Ошибка загрузки:', error);
this.hasMore = false;
this.showError();
} finally {
this.isLoading = false;
this.hideLoading();
}
}
private showLoading() {
if (this.loadingIndicator) {
this.loadingIndicator.style.display = 'block';
}
}
private hideLoading() {
if (this.loadingIndicator) {
this.loadingIndicator.style.display = 'none';
}
}
private showNoMorePosts() {
if (this.sentinel && this.observer) {
this.observer.unobserve(this.sentinel);
this.sentinel.style.display = 'none';
}
if (this.noMorePosts) {
this.noMorePosts.style.display = 'block';
}
}
private showError() {
if (this.noMorePosts) {
this.noMorePosts.textContent = 'Ошибка загрузки. Попробуйте обновить страницу.';
this.noMorePosts.style.display = 'block';
}
}
public destroy() {
if (this.observer && this.sentinel) {
this.observer.unobserve(this.sentinel);
}
this.observer?.disconnect();
}
}
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// Инициализация
if (document.getElementById('infinity-scroll-sentinel')) {
if ('requestIdleCallback' in window) {
requestIdleCallback(() => {
new InfinityScroll();
}, { timeout: 2000 });
} else {
setTimeout(() => {
new InfinityScroll();
}, 200);
}
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}
</script>