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Pivot blog to the SX editor's content model. The editor (blog/sx/editor.sx)
emits sx_content = SX element markup, NOT content-on-sx CtDoc blocks. So a post
is now a {slug,title,sx_content,status} record in the durable persist KV, and a
post page is render-to-html(parse sx_content) — server-side, static, no client
runtime needed to view.
Endpoints: GET / (HTML index), /<slug>/ (rendered post), /posts (JSON list),
/new (create form); POST /new (form-urlencoded editor ingest, slug from title,
303 redirect), POST /posts (JSON create), PUT/DELETE /posts/<slug>. Writes
behind auth+ACL (edit/blog). Dropped the content-on-sx/Smalltalk preload chain;
added spec/render + web/adapter-html (render-to-html) + lib/dream/form.
BONUS: render-to-html is ~0ms (vs the 2s content-on-sx Smalltalk asHTML) — it
doesn't hit the JIT-miscompiled path, so blog rendering is no longer slow.
Live: blog.rose-ash.com/ lists posts, /welcome/ renders instantly. Reads live;
the form-ingest write path needs an auth decision before going live (browser
forms can't send bearer; needs session or a Caddy basicauth gate).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
202 lines
9.2 KiB
Plaintext
202 lines
9.2 KiB
Plaintext
;; lib/host/blog.sx — Blog domain on the host, on the EDITOR's content model.
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;; The SX post editor (blog/sx/editor.sx) emits `sx_content`: SX element markup
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;; (e.g. "(article (h1 \"T\") (p \"body\" (strong \"x\")))"), NOT content-on-sx
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;; CtDoc blocks. So a post here is a record {slug,title,sx_content,status} stored
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;; in the durable persist KV, and a post page is `render-to-html (parse sx_content)`
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;; — server-side, static, no client runtime needed to view a published post.
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;;
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;; GET / HTML index of posts (public)
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;; GET /<slug>/ rendered post (public) -> HTML / 404
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;; GET /posts JSON list (public) -> [{slug,title,status}]
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;; GET /new HTML create form (public chrome)
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;; POST /new form-urlencoded ingest from the editor (guarded)
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;; POST /posts JSON create (guarded)
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;; PUT /posts/<slug> JSON update (guarded)
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;; DELETE /posts/<slug> delete (guarded)
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;; Reads anonymous; writes behind the auth+ACL pipeline ("edit" on "blog").
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;; Depends on spec/render + web/adapter-html (render-to-html), lib/persist/*
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;; (durable KV), lib/dream/* (+ form), lib/host/{handler,middleware}.sx.
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;; ── store (durable persist KV, injectable) ──────────────────────────
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(define host/blog-store (persist/open))
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(define host/blog-use-store! (fn (b) (set! host/blog-store b)))
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(define host/blog--key (fn (slug) (str "blog:" slug)))
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;; slug from a title: lowercase, words joined by '-'. (Punctuation kept simple.)
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(define host/blog-slugify
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(fn (title)
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(join "-" (filter (fn (w) (not (= w ""))) (split (lower title) " ")))))
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;; ── records ─────────────────────────────────────────────────────────
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(define host/blog-get
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(fn (slug) (persist/backend-kv-get host/blog-store (host/blog--key slug))))
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(define host/blog-exists?
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(fn (slug) (persist/backend-kv-has? host/blog-store (host/blog--key slug))))
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(define host/blog-put!
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(fn (slug title sx-content status)
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(persist/backend-kv-put host/blog-store (host/blog--key slug)
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{:slug slug :title title :sx-content sx-content :status status})))
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(define host/blog-delete!
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(fn (slug) (persist/backend-kv-delete host/blog-store (host/blog--key slug))))
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(define host/blog-seed!
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(fn (slug title sx-content status)
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(when (not (host/blog-exists? slug)) (host/blog-put! slug title sx-content status))))
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;; all blog slugs (kv keys are "blog:<slug>")
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(define host/blog-slugs
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(fn ()
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(reduce
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(fn (acc k)
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(if (starts-with? k "blog:") (append acc (list (substr k 5))) acc))
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(list)
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(persist/backend-kv-keys host/blog-store))))
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(define host/blog-list
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(fn ()
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(map
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(fn (slug)
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(let ((r (host/blog-get slug)))
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{:slug slug :title (get r :title) :status (get r :status)}))
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(host/blog-slugs))))
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;; ── render ──────────────────────────────────────────────────────────
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;; A post's sx_content is SX element markup -> HTML via the component renderer.
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(define host/blog-render
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(fn (record)
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(let ((sx (get record :sx-content)))
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(if (and sx (not (= sx "")))
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(render-to-html (parse sx))
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(str "<p>(empty post)</p>")))))
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(define host/blog--page
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(fn (title body)
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(str "<!doctype html><meta charset=\"utf-8\"><title>" title "</title>" body)))
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;; ── read handlers ───────────────────────────────────────────────────
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(define host/blog-post
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(fn (req)
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(let ((slug (dream-param req "slug")))
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(let ((r (host/blog-get slug)))
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(if r
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(dream-html
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(host/blog--page (get r :title) (host/blog-render r)))
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(dream-html-status 404
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(host/blog--page "Not found"
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(str "<h1>404</h1><p>No published post: " slug "</p>"))))))))
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(define host/blog--li
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(fn (acc p)
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(str acc "<li><a href=\"/" (get p :slug) "/\">" (get p :title) "</a></li>")))
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(define host/blog-home
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(fn (req)
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(let ((posts (host/blog-list)))
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(dream-html
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(host/blog--page "Blog"
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(str "<h1>Posts</h1>"
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(if (> (len posts) 0)
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(str "<ul>" (reduce host/blog--li "" posts) "</ul>")
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"<p>No posts yet.</p>")
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"<p><a href=\"/new\">+ New post</a></p>"))))))
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(define host/blog-index (fn (req) (host/ok (host/blog-list))))
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;; ── create form (GET /new) — minimal chrome; the SX editor posts here too ──
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(define host/blog-new-form
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(fn (req)
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(dream-html
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(host/blog--page "New post"
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(str
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"<h1>New post</h1>"
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"<form method=\"post\" action=\"/new\">"
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"<p><input name=\"title\" placeholder=\"Title\" style=\"font-size:1.4em;width:100%\"></p>"
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"<p><textarea name=\"sx_content\" rows=\"12\" style=\"width:100%\" "
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"placeholder=\"(article (h1 "Title") (p "Body"))\"></textarea></p>"
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"<p><select name=\"status\"><option value=\"draft\">Draft</option>"
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"<option value=\"published\">Published</option></select> "
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"<button type=\"submit\">Publish</button></p>"
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"</form><p><a href=\"/\">← all posts</a></p>")))))
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;; ── write handlers ──────────────────────────────────────────────────
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;; POST /new — form-urlencoded ingest (the editor's submit shape: title,
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;; sx_content, status, custom_excerpt, csrf_token). Slug derived from the title.
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;; Redirects to the new post on success.
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(define host/blog-form-submit
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(fn (req)
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(let ((title (dream-form-field req "title"))
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(sx-content (dream-form-field req "sx_content"))
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(status (or (dream-form-field req "status") "published")))
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(if (and title (not (= title "")))
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(let ((slug (host/blog-slugify title)))
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(begin
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(host/blog-put! slug title (or sx-content "") status)
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(dream-redirect (str "/" slug "/"))))
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(dream-html-status 400
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(host/blog--page "Error" "<p>Title is required. <a href=\"/new\">back</a></p>"))))))
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;; POST /posts — JSON create {slug?,title,sx_content,status}. 409 if slug exists.
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(define host/blog-create
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(fn (req)
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(let ((p (dream-json-body req)))
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(if (= (type-of p) "dict")
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(let ((title (get p :title)))
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(if (and title (not (= title "")))
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(let ((slug (or (get p :slug) (host/blog-slugify title))))
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(if (host/blog-exists? slug)
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(host/error 409 "post already exists")
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(begin
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(host/blog-put! slug title (or (get p :sx_content) "")
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(or (get p :status) "published"))
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(host/ok-status 201 {:slug slug :title title}))))
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(host/error 400 "title required")))
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(host/error 400 "invalid payload")))))
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;; PUT /posts/<slug> — JSON update {title?,sx_content?,status?}. 404 if absent.
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(define host/blog-update-handler
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(fn (req)
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(let ((slug (dream-param req "slug")) (p (dream-json-body req)))
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(if (= (type-of p) "dict")
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(let ((r (host/blog-get slug)))
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(if r
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(begin
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(host/blog-put! slug
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(or (get p :title) (get r :title))
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(or (get p :sx_content) (get r :sx-content))
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(or (get p :status) (get r :status)))
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(host/ok {:slug slug :updated true}))
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(host/error 404 "no such post")))
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(host/error 400 "invalid payload")))))
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;; DELETE /posts/<slug>
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(define host/blog-delete-handler
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(fn (req)
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(let ((slug (dream-param req "slug")))
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(if (host/blog-exists? slug)
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(begin (host/blog-delete! slug) (host/ok {:slug slug :deleted true}))
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(host/error 404 "no such post")))))
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;; ── routes ──────────────────────────────────────────────────────────
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;; Public reads + the create form. /, /posts, /new BEFORE /:slug (catch-all).
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;; MUST be mounted LAST in the app so domain routes (/feed, /health) win.
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(define host/blog-routes
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(list
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(dream-get "/" host/blog-home)
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(dream-get "/posts" host/blog-index)
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(dream-get "/new" host/blog-new-form)
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(dream-get "/:slug" host/blog-post)))
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;; Guarded writes: form ingest + JSON create/update/delete behind auth+ACL.
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;; NB: helper is host/blog--protect, NOT `guard` (reserved special form).
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(define host/blog--protect
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(fn (resolve h)
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(host/pipeline
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(list
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host/wrap-errors
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(host/require-auth resolve)
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(host/require-permission "edit" (fn (req) "blog")))
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h)))
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(define host/blog-write-routes
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(fn (resolve)
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(list
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(dream-post "/new" (host/blog--protect resolve host/blog-form-submit))
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(dream-post "/posts" (host/blog--protect resolve host/blog-create))
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(dream-put "/posts/:slug" (host/blog--protect resolve host/blog-update-handler))
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(dream-delete "/posts/:slug" (host/blog--protect resolve host/blog-delete-handler)))))
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