105 lines
2.9 KiB
TypeScript
105 lines
2.9 KiB
TypeScript
import { allPosts, allPages, Post, Page } from 'contentlayer2/generated';
|
|
|
|
export function getAllPostsSorted(): Post[] {
|
|
return [...allPosts].sort((a, b) => {
|
|
const aDate = a.published_at ? new Date(a.published_at).getTime() : 0;
|
|
const bDate = b.published_at ? new Date(b.published_at).getTime() : 0;
|
|
return bDate - aDate;
|
|
});
|
|
}
|
|
|
|
export function getPostBySlug(slug: string): Post | undefined {
|
|
return allPosts.find(
|
|
(post) =>
|
|
post.flattenedPath === slug ||
|
|
post.slug === slug ||
|
|
post._raw.flattenedPath === slug
|
|
);
|
|
}
|
|
|
|
export function getPageBySlug(slug: string): Page | undefined {
|
|
return allPages.find(
|
|
(page) =>
|
|
page.flattenedPath === slug ||
|
|
page.slug === slug ||
|
|
page._raw.flattenedPath === slug
|
|
);
|
|
}
|
|
|
|
export function getTagSlug(tag: string): string {
|
|
return tag.toLowerCase().replace(/\s+/g, '-');
|
|
}
|
|
|
|
export function getAllTagsWithCount(): { tag: string; slug: string; count: number }[] {
|
|
const map = new Map<string, number>();
|
|
|
|
for (const post of allPosts) {
|
|
if (!post.tags) continue;
|
|
for (const tag of post.tags) {
|
|
map.set(tag, (map.get(tag) ?? 0) + 1);
|
|
}
|
|
}
|
|
|
|
return Array.from(map.entries())
|
|
.map(([tag, count]) => ({ tag, slug: getTagSlug(tag), count }))
|
|
.sort((a, b) => {
|
|
if (b.count === a.count) return a.tag.localeCompare(b.tag);
|
|
return b.count - a.count;
|
|
});
|
|
}
|
|
|
|
export function getRelatedPosts(target: Post, limit = 3): Post[] {
|
|
const targetTags = new Set(target.tags?.map((tag) => tag.toLowerCase()) ?? []);
|
|
const candidates = getAllPostsSorted().filter((post) => post._id !== target._id);
|
|
|
|
if (candidates.length === 0) return [];
|
|
|
|
const scored = candidates
|
|
.map((post) => {
|
|
const sharedTags = (post.tags ?? []).reduce((acc, tag) => {
|
|
return acc + (targetTags.has(tag.toLowerCase()) ? 1 : 0);
|
|
}, 0);
|
|
return { post, score: sharedTags };
|
|
})
|
|
.filter((entry) => entry.score > 0)
|
|
.sort((a, b) => {
|
|
if (b.score === a.score) {
|
|
const aDate = a.post.published_at
|
|
? new Date(a.post.published_at).getTime()
|
|
: 0;
|
|
const bDate = b.post.published_at
|
|
? new Date(b.post.published_at).getTime()
|
|
: 0;
|
|
return bDate - aDate;
|
|
}
|
|
return b.score - a.score;
|
|
})
|
|
.slice(0, limit)
|
|
.map((entry) => entry.post);
|
|
|
|
if (scored.length >= limit) {
|
|
return scored;
|
|
}
|
|
|
|
const fallback = candidates.filter(
|
|
(post) => !scored.some((existing) => existing._id === post._id)
|
|
);
|
|
|
|
return [...scored, ...fallback.slice(0, limit - scored.length)].slice(0, limit);
|
|
}
|
|
|
|
export function getPostNeighbors(target: Post): {
|
|
newer?: Post;
|
|
older?: Post;
|
|
} {
|
|
const sorted = getAllPostsSorted();
|
|
const index = sorted.findIndex((post) => post._id === target._id);
|
|
|
|
if (index === -1) return {};
|
|
|
|
return {
|
|
newer: index > 0 ? sorted[index - 1] : undefined,
|
|
older: index < sorted.length - 1 ? sorted[index + 1] : undefined
|
|
};
|
|
}
|