import { defineCollection } from 'astro:content';
import { glob } from 'astro/loaders';
import { z } from 'astro/zod';
import { baseEntry, themeOverride } from '@eratic/core';

/**
 * io.eratic.ro — one issue a week.
 *
 *   src/content/issues/2026/32.mdx  → /2026/32/
 *
 * The links are frontmatter rather than prose because a list of links is
 * structured data: it wants to be rendered consistently, grouped by kind, and
 * carried whole into the feed. The MDX body is for whatever you want to say
 * around them, and it can be empty.
 *
 * `title` is optional here and nowhere else. A weekly thing that demands a
 * clever title every week becomes a weekly thing you stop doing; leave it out
 * and the issue is simply "Issue 32".
 */

export const LINK_KINDS = ['read', 'watched', 'listened', 'other'] as const;
export type LinkKind = (typeof LINK_KINDS)[number];

export const LINK_KIND_LABEL: Record<LinkKind, string> = {
	read: 'Read',
	watched: 'Watched',
	listened: 'Listened',
	other: 'Elsewhere',
};

const issues = defineCollection({
	loader: glob({ pattern: '**/[^_]*.{md,mdx}', base: './src/content/issues' }),
	schema: () =>
		baseEntry.extend({
			title: z.string().optional(),
			issue: z.number().int().positive(),
			links: z
				.array(
					z.object({
						title: z.string().min(1),
						url: z.url(),
						kind: z.enum(LINK_KINDS).default('read'),
						/** Who or what led you to it. Credit costs nothing. */
						via: z.string().optional(),
						/** One or two sentences on why it is here. */
						note: z.string().optional(),
					}),
				)
				.min(1, 'An issue with no links is not an issue.'),
			canvas: z.enum(['article', 'wide', 'bare']).default('article'),
			theme: themeOverride,
		}),
});

export const collections = { issues };