initial commit

app/api/posts/[slug]/route.ts

@@ -0,0 +1,51 @@
+import { HttpError } from "@/lib/errors";
+import { readJson, route } from "@/lib/http";
+import { deleteImageDir, renameImageDir } from "@/lib/images";
+import { findPost, mutatePosts, readPosts } from "@/lib/store";
+import { validatePost } from "@/lib/validate";
+
+export const dynamic = "force-dynamic";
+
+type Ctx = { params: Promise<{ slug: string }> };
+
+export const GET = route<Ctx>(async (_req, { params }) => {
+  const { slug } = await params;
+  const { posts, revision } = await readPosts();
+  return Response.json({ post: findPost(posts, slug), revision });
+});
+
+/** Body: { post: PostInput, revision? }. A changed slug also moves the
+ *  post's image folder and rewrites references to it. */
+export const PUT = route<Ctx>(async (req, { params }) => {
+  const { slug } = await params;
+  const body = await readJson<{ post?: unknown; revision?: string }>(req);
+  const { post: input, errors } = validatePost(body.post);
+  if (!input) throw new HttpError(400, "invalid post", errors);
+
+  const { result, revision } = await mutatePosts(body.revision, async (posts) => {
+    const existing = findPost(posts, slug);
+    const updated = { ...input, id: existing.id };
+    if (input.slug !== slug) {
+      if (posts.some((p) => p.slug === input.slug)) {
+        throw new HttpError(409, `a post with slug "${input.slug}" already exists`);
+      }
+      await renameImageDir(updated, slug, input.slug);
+    }
+    // images is optional: an editor that cleared the gallery drops the key.
+    if (!input.images) delete (updated as { images?: unknown }).images;
+    posts[posts.indexOf(existing)] = updated;
+    return updated;
+  });
+  return Response.json({ post: result, revision });
+});
+
+/** Query: ?revision=…&images=1 (also delete the post's image folder). */
+export const DELETE = route<Ctx>(async (req, { params }) => {
+  const { slug } = await params;
+  const url = new URL(req.url);
+  const { revision } = await mutatePosts(url.searchParams.get("revision") ?? undefined, (posts) => {
+    posts.splice(posts.indexOf(findPost(posts, slug)), 1);
+  });
+  if (url.searchParams.get("images") === "1") await deleteImageDir(slug);
+  return Response.json({ deleted: slug, revision });
+});

app/api/posts/route.ts

@@ -0,0 +1,28 @@
+import { HttpError } from "@/lib/errors";
+import { readJson, route } from "@/lib/http";
+import { categoryCounts, mutatePosts, readPosts, tagCounts } from "@/lib/store";
+import { validatePost } from "@/lib/validate";
+
+export const dynamic = "force-dynamic";
+
+export const GET = route(async () => {
+  const { posts, revision } = await readPosts();
+  return Response.json({ posts, revision, categories: categoryCounts(posts), tags: tagCounts(posts) });
+});
+
+/** Body: { post: PostInput, revision? } */
+export const POST = route(async (req) => {
+  const body = await readJson<{ post?: unknown; revision?: string }>(req);
+  const { post, errors } = validatePost(body.post);
+  if (!post) throw new HttpError(400, "invalid post", errors);
+
+  const { result, revision } = await mutatePosts(body.revision, (posts) => {
+    if (posts.some((p) => p.slug === post.slug)) {
+      throw new HttpError(409, `a post with slug "${post.slug}" already exists`);
+    }
+    const created = { id: Math.max(0, ...posts.map((p) => p.id)) + 1, ...post };
+    posts.push(created);
+    return created;
+  });
+  return Response.json({ post: result, revision }, { status: 201 });
+});