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import { type CollectionEntry, getCollection } from "astro:content";
/** filter out draft posts based on the environment */
export async function getAllPosts(): Promise<CollectionEntry<"post">[]> {
return await getCollection("post", ({ data }) => {
return import.meta.env.PROD ? !data.draft : true;
});
}
/** Get tag metadata by tag name */
export async function getTagMeta(tag: string): Promise<CollectionEntry<"tag"> | undefined> {
const tagEntries = await getCollection("tag", (entry) => {
return entry.id === tag;
});
return tagEntries[0];
}
/** groups posts by year (based on option siteConfig.sortPostsByUpdatedDate), using the year as the key
* Note: This function doesn't filter draft posts, pass it the result of getAllPosts above to do so.
*/
export function groupPostsByYear(posts: CollectionEntry<"post">[]) {
return posts.reduce<Record<string, CollectionEntry<"post">[]>>((acc, post) => {
const year = post.data.publishDate.getFullYear();
if (!acc[year]) {
acc[year] = [];
}
acc[year]?.push(post);
return acc;
}, {});
}
/** returns all tags created from posts (inc duplicate tags)
* Note: This function doesn't filter draft posts, pass it the result of getAllPosts above to do so.
* */
export function getAllTags(posts: CollectionEntry<"post">[]) {
return posts.flatMap((post) => [...post.data.tags]);
}
/** returns all unique tags created from posts
* Note: This function doesn't filter draft posts, pass it the result of getAllPosts above to do so.
* */
export function getUniqueTags(posts: CollectionEntry<"post">[]) {
return [...new Set(getAllTags(posts))];
}
/** returns a count of each unique tag - [[tagName, count], ...]
* Note: This function doesn't filter draft posts, pass it the result of getAllPosts above to do so.
* */
export function getUniqueTagsWithCount(posts: CollectionEntry<"post">[]): [string, number][] {
return [
...getAllTags(posts).reduce(
(acc, t) => acc.set(t, (acc.get(t) ?? 0) + 1),
new Map<string, number>(),
),
].sort((a, b) => b[1] - a[1]);
}
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