---
import type { CollectionEntry } from "astro:content";
import type { GetStaticPaths, Page } from "astro";
import { Icon } from "astro-icon/components";
import PostPreview from "@/components/blog/PostPreview.astro";
import Pagination from "@/components/Paginator.astro";
import { getAllExperience } from "@/data/experience";
import { getAllPosts, groupPostsByYear } from "@/data/post";
import PageLayout from "@/layouts/Base.astro";
import { collectionDateSort } from "@/utils/date";
import { breadcrumbList, collectionPageSchema } from "@/utils/seo";

export const getStaticPaths = (async ({ paginate }) => {
	const MAX_POSTS_PER_PAGE = 10;
	const MAX_PINNED_POSTS = 3;
	const allPosts = await getAllPosts();
	const allPostsByDate = allPosts.sort(collectionDateSort);
	const experiences = await getAllExperience();
	const pinnedPosts = allPostsByDate
		.values()
		.filter((p) => p.data.pinned)
		.take(MAX_PINNED_POSTS)
		.toArray();
	return paginate(allPostsByDate, {
		pageSize: MAX_POSTS_PER_PAGE,
		props: { experiences, pinnedPosts },
	});
}) satisfies GetStaticPaths;

interface Props {
	page: Page<CollectionEntry<"writing">>;
	experiences: CollectionEntry<"experience">[];
	pinnedPosts: CollectionEntry<"writing">[];
}

const { page, experiences, pinnedPosts } = Astro.props;

const meta = {
	description: "Essays, notes and articles I've written",
	schema: [
		breadcrumbList([
			{ name: "Home", path: "/" },
			{ name: "Writing", path: "/writing/" },
		]),
		collectionPageSchema({
			name: "Writing",
			description: "Essays, notes and articles I've written",
			path: page.url.current,
			items: page.data.map((p) => ({ name: p.data.title, path: `/writing/${p.id}/` })),
		}),
	],
	title: "Writing",
};

const paginationProps = {
	...(page.url.prev && {
		prevUrl: {
			text: "← Previous Page",
			url: page.url.prev,
		},
	}),
	...(page.url.next && {
		nextUrl: {
			text: "Next Page →",
			url: page.url.next,
		},
	}),
};

const groupedByYear = groupPostsByYear(page.data);
const descYearKeys = Object.keys(groupedByYear).sort((a, b) => +b - +a);
---

<PageLayout meta={meta}>
	<div class="mb-12 flex items-center gap-3">
		<h1 class="title">Writing</h1>
		<a class="text-accent" href="/rss.xml" target="_blank">
			<span class="sr-only">RSS feed</span>
			<Icon aria-hidden="true" class="h-6 w-6" focusable="false" name="lucide:rss" />
		</a>
	</div>
	<div class="grid sm:grid-cols-[3fr_1fr] sm:gap-x-8 sm:gap-y-16">
		<div>
			{
				pinnedPosts.length > 0 && (
					<section class="mb-16">
						<h2 class="title mb-6 text-xl">Pinned</h2>
						<ul class="space-y-4" role="list">
							{pinnedPosts.map((p) => (
								<li class="grid gap-1 sm:grid-cols-[auto_1fr]">
									<PostPreview post={p} />
								</li>
							))}
						</ul>
					</section>
				)
			}
			{
				descYearKeys.map((yearKey) => (
					<section class="mb-16">
						<h2 id={`year-${yearKey}`} class="title text-lg">
							<span class="sr-only">Posts in</span>
							{yearKey}
						</h2>
						<ul class="mt-5 space-y-4 text-start">
							{groupedByYear[yearKey]?.map((p) => (
								<li class="grid gap-1 sm:grid-cols-[auto_1fr] sm:[&_q]:col-start-2">
									<PostPreview post={p} />
								</li>
							))}
						</ul>
					</section>
				))
			}
			<Pagination {...paginationProps} />
		</div>
		{
			!!experiences.length && (
				<aside>
					<h2 class="title mb-4 text-lg">Experience</h2>
					<ul class="flex flex-col gap-2">
						{experiences.map((exp) => (
							<li>
								<a class="cactus-link" href={`/experience/${exp.id}/`}>
									{exp.data.title}
								</a>
							</li>
						))}
					</ul>
					<span class="mt-4 block sm:text-end">
						<a class="hover:text-link" href="/experience/">
							View all <span aria-hidden="true">→</span>
							<span class="sr-only">experience</span>
						</a>
					</span>
				</aside>
			)
		}
	</div>
</PageLayout>