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import React, { Fragment } from "react";
import clsx from "clsx";
import { HttpTimelinePostInfo } from "@/http/timeline";
import TimelinePostView from "./TimelinePostView";
import TimelineDateLabel from "./TimelineDateLabel";
function dateEqual(left: Date, right: Date): boolean {
return (
left.getDate() == right.getDate() &&
left.getMonth() == right.getMonth() &&
left.getFullYear() == right.getFullYear()
);
}
export interface TimelinePostListViewProps {
className?: string;
style?: React.CSSProperties;
posts: HttpTimelinePostInfo[];
onReload: () => void;
}
const TimelinePostListView: React.FC<TimelinePostListViewProps> = (props) => {
const { className, style, posts, onReload } = props;
const groupedPosts = React.useMemo<
{ date: Date; posts: (HttpTimelinePostInfo & { index: number })[] }[]
>(() => {
const result: {
date: Date;
posts: (HttpTimelinePostInfo & { index: number })[];
}[] = [];
let index = 0;
for (const post of posts) {
const time = new Date(post.time);
if (result.length === 0) {
result.push({ date: time, posts: [{ ...post, index }] });
} else {
const lastGroup = result[result.length - 1];
if (dateEqual(lastGroup.date, time)) {
lastGroup.posts.push({ ...post, index });
} else {
result.push({ date: time, posts: [{ ...post, index }] });
}
}
index++;
}
return result;
}, [posts]);
return (
<div style={style} className={clsx("timeline", className)}>
{groupedPosts.map((group) => {
return (
<Fragment key={group.date.toDateString()}>
<TimelineDateLabel date={group.date} />
{group.posts.map((post) => {
return (
<TimelinePostView
key={post.id}
post={post}
current={posts.length - 1 === post.index}
onDeleted={onReload}
/>
);
})}
</Fragment>
);
})}
</div>
);
};
export default TimelinePostListView;
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