import { defineCollection } from "astro:content";
import { glob } from "astro/loaders";
// Not astro:content's re-export, which is deprecated.
import { z } from "astro/zod";

/**
 * Posts are markdown files, and the schema is what stops a typo in the
 * frontmatter from shipping as a page with no date on it.
 *
 * The field names are the ones standard.site publishing tools already look
 * for - title, description, publishDate, tags, draft - so posting these to an
 * ATProto repository later is a matter of pointing something at this
 * directory, not of renaming every file's frontmatter. atUri is the other
 * direction: it is what those tools write back once a post has a record.
 */
const blog = defineCollection({
  loader: glob({ base: "./src/content/blog", pattern: "**/*.md" }),
  schema: z.object({
    title: z.string(),
    description: z.string(),
    publishDate: z.coerce.date(),
    updatedDate: z.coerce.date().optional(),
    tags: z.array(z.string()).default([]),
    draft: z.boolean().default(false),

    // The post's own record, written back here by whatever publishes it. It
    // is absent until then, and a post without one renders no standard.site
    // link tag rather than an empty href.
    atUri: z.string().startsWith("at://").optional(),
  }),
});

export const collections = { blog };