rose-ash/sx/sx/affinity-demo.sx

;; Affinity demo — Phase 7a render boundary annotations.
;;
;; Demonstrates :affinity annotations on defcomp and how they influence
;; the server/client render boundary decision. Components declare where
;; they prefer to render; the runtime combines this with IO analysis.

;; --- Demo components with different affinities ---

(defcomp ~affinity-demo/aff-demo-auto (&key (label :as string?))
  (div :class "rounded border border-stone-200 bg-white p-4"
    (div :class "flex items-center gap-2 mb-2"
      (span :class "inline-block w-2 h-2 rounded-full bg-stone-400")
      (span :class "text-sm font-mono text-stone-500" ":affinity :auto"))
    (p :class "text-stone-800" (or label "Pure component — no IO calls. Auto-detected as client-renderable."))))

(defcomp ~affinity-demo/aff-demo-client (&key (label :as string?))
  :affinity :client
  (div :class "rounded border border-blue-200 bg-blue-50 p-4"
    (div :class "flex items-center gap-2 mb-2"
      (span :class "inline-block w-2 h-2 rounded-full bg-blue-400")
      (span :class "text-sm font-mono text-blue-600" ":affinity :client"))
    (p :class "text-blue-800" (or label "Explicitly client-rendered — even IO calls would be proxied."))))

(defcomp ~affinity-demo/aff-demo-server (&key (label :as string?))
  :affinity :server
  (div :class "rounded border border-amber-200 bg-amber-50 p-4"
    (div :class "flex items-center gap-2 mb-2"
      (span :class "inline-block w-2 h-2 rounded-full bg-amber-400")
      (span :class "text-sm font-mono text-amber-600" ":affinity :server"))
    (p :class "text-amber-800" (or label "Always server-rendered — auth-sensitive or secret-dependent."))))

(defcomp ~affinity-demo/aff-demo-io-auto ()
  (div :class "rounded border border-red-200 bg-red-50 p-4"
    (div :class "flex items-center gap-2 mb-2"
      (span :class "inline-block w-2 h-2 rounded-full bg-red-400")
      (span :class "text-sm font-mono text-red-600" ":affinity :auto + IO"))
    (p :class "text-red-800 mb-3" "Auto affinity with IO dependency — auto-detected as server-rendered.")
    (~docs/code :code (highlight "(render-target name env io-names)" "lisp"))))

(defcomp ~affinity-demo/aff-demo-io-client ()
  :affinity :client
  (div :class "rounded border border-violet-200 bg-violet-50 p-4"
    (div :class "flex items-center gap-2 mb-2"
      (span :class "inline-block w-2 h-2 rounded-full bg-violet-400")
      (span :class "text-sm font-mono text-violet-600" ":affinity :client + IO"))
    (p :class "text-violet-800 mb-3" "Client affinity overrides IO — calls proxied to server via /sx/io/.")
    (~docs/code :code (highlight "(component-affinity comp)" "lisp"))))


;; --- Main page component ---

(defcomp ~affinity-demo/content (&key components page-plans)
  (div :class "space-y-8"
    (div :class "border-b border-stone-200 pb-6"
      (h1 :class "text-2xl font-bold text-stone-900" "Affinity Annotations")
      (p :class "mt-2 text-stone-600"
        "Phase 7a: components declare where they prefer to render. The "
        (code :class "bg-stone-100 px-1 rounded text-violet-700" "render-target")
        " function in deps.sx combines the annotation with IO analysis to produce a per-component boundary decision."))

    ;; Syntax
    (~docs/section :title "Syntax" :id "syntax"
      (p "Add " (code ":affinity") " between the params list and the body:")
      (~docs/code :code (highlight "(defcomp ~affinity-demo/my-component (&key title)\n  :affinity :client   ;; or :server, or omit for :auto\n  (div title))" "lisp"))
      (p "Three values:")
      (ul :class "list-disc pl-5 text-stone-700 space-y-1"
        (li (code ":auto") " (default) — runtime decides from IO dependency analysis")
        (li (code ":client") " — always render client-side; IO calls proxied to server")
        (li (code ":server") " — always render server-side; never sent to client as SX")))

    ;; Live components
    (~docs/section :title "Live Components" :id "live"
      (p "These components are defined with different affinities. The server analyzed them at registration time:")

      (div :class "space-y-4 mt-4"
        (~affinity-demo/aff-demo-auto)
        (~affinity-demo/aff-demo-client)
        (~affinity-demo/aff-demo-server)
        (~affinity-demo/aff-demo-io-auto)
        (~affinity-demo/aff-demo-io-client)))

    ;; Analysis table from server
    (~docs/section :title "Server Analysis" :id "analysis"
      (p "The server computed these render targets at component registration time:")
      (div :class "overflow-x-auto rounded border border-stone-200"
        (table :class "w-full text-left text-sm"
          (thead (tr :class "border-b border-stone-200 bg-stone-100"
            (th :class "px-3 py-2 font-medium text-stone-600" "Component")
            (th :class "px-3 py-2 font-medium text-stone-600" "Affinity")
            (th :class "px-3 py-2 font-medium text-stone-600" "IO Deps")
            (th :class "px-3 py-2 font-medium text-stone-600" "Render Target")))
          (tbody
            (map (fn (c)
              (tr :class "border-b border-stone-100"
                (td :class "px-3 py-2 font-mono text-sm text-violet-700" (get c "name"))
                (td :class "px-3 py-2"
                  (span :class (str "inline-block px-2 py-0.5 rounded text-xs font-bold uppercase "
                    (case (get c "affinity")
                      "client" "bg-blue-100 text-blue-700"
                      "server" "bg-amber-100 text-amber-700"
                      "bg-stone-100 text-stone-600"))
                    (get c "affinity")))
                (td :class "px-3 py-2 text-stone-600"
                  (if (> (len (get c "io-refs")) 0)
                    (span :class "text-red-600 font-medium"
                      (join ", " (get c "io-refs")))
                    (span :class "text-green-600" "none")))
                (td :class "px-3 py-2"
                  (span :class (str "inline-block px-2 py-0.5 rounded text-xs font-bold uppercase "
                    (if (= (get c "render-target") "client")
                      "bg-green-100 text-green-700"
                      "bg-orange-100 text-orange-700"))
                    (get c "render-target")))))
              components)))))

    ;; Decision matrix
    (~docs/section :title "Decision Matrix" :id "matrix"
      (div :class "overflow-x-auto rounded border border-stone-200"
        (table :class "w-full text-left text-sm"
          (thead (tr :class "border-b border-stone-200 bg-stone-100"
            (th :class "px-3 py-2 font-medium text-stone-600" "Affinity")
            (th :class "px-3 py-2 font-medium text-stone-600" "Has IO?")
            (th :class "px-3 py-2 font-medium text-stone-600" "Render Target")
            (th :class "px-3 py-2 font-medium text-stone-600" "Why")))
          (tbody
            (tr :class "border-b border-stone-100"
              (td :class "px-3 py-2 font-mono" ":auto")
              (td :class "px-3 py-2" "No")
              (td :class "px-3 py-2 font-bold text-green-700" "client")
              (td :class "px-3 py-2 text-stone-600" "Pure — can render anywhere"))
            (tr :class "border-b border-stone-100"
              (td :class "px-3 py-2 font-mono" ":auto")
              (td :class "px-3 py-2" "Yes")
              (td :class "px-3 py-2 font-bold text-orange-700" "server")
              (td :class "px-3 py-2 text-stone-600" "IO must resolve server-side"))
            (tr :class "border-b border-stone-100"
              (td :class "px-3 py-2 font-mono" ":client")
              (td :class "px-3 py-2" "No")
              (td :class "px-3 py-2 font-bold text-green-700" "client")
              (td :class "px-3 py-2 text-stone-600" "Explicit + pure"))
            (tr :class "border-b border-stone-100"
              (td :class "px-3 py-2 font-mono" ":client")
              (td :class "px-3 py-2" "Yes")
              (td :class "px-3 py-2 font-bold text-green-700" "client")
              (td :class "px-3 py-2 text-stone-600" "Override — IO proxied via /sx/io/"))
            (tr :class "border-b border-stone-100"
              (td :class "px-3 py-2 font-mono" ":server")
              (td :class "px-3 py-2" "No")
              (td :class "px-3 py-2 font-bold text-orange-700" "server")
              (td :class "px-3 py-2 text-stone-600" "Override — auth-sensitive"))
            (tr :class "border-b border-stone-100"
              (td :class "px-3 py-2 font-mono" ":server")
              (td :class "px-3 py-2" "Yes")
              (td :class "px-3 py-2 font-bold text-orange-700" "server")
              (td :class "px-3 py-2 text-stone-600" "Both affinity and IO say server"))))))

    ;; Per-page render plans
    (~docs/section :title "Page Render Plans" :id "plans"
      (p "Phase 7b: render plans are pre-computed at registration time for each page. The plan maps every component needed by the page to its render target.")

      (when (> (len page-plans) 0)
        (div :class "space-y-4 mt-4"
          (map (fn (plan)
            (div :class "rounded border border-stone-200 p-4"
              (div :class "flex items-center justify-between mb-3"
                (div
                  (span :class "font-mono font-medium text-stone-800" (get plan "name"))
                  (span :class "text-stone-400 ml-2 text-sm" (get plan "path")))
                (div :class "flex gap-2"
                  (span :class "inline-block px-2 py-0.5 rounded text-xs font-bold bg-orange-100 text-orange-700"
                    (str (get plan "server-count") " server"))
                  (span :class "inline-block px-2 py-0.5 rounded text-xs font-bold bg-green-100 text-green-700"
                    (str (get plan "client-count") " client"))))
              (when (> (get plan "server-count") 0)
                (div :class "mb-2"
                  (span :class "text-xs font-medium text-stone-500 uppercase" "Server-expanded: ")
                  (span :class "text-sm font-mono text-orange-700"
                    (join " " (get plan "server")))))
              (when (> (get plan "client-count") 0)
                (div
                  (span :class "text-xs font-medium text-stone-500 uppercase" "Client-rendered: ")
                  (span :class "text-sm font-mono text-green-700"
                    (join " " (get plan "client")))))))
            page-plans))))

    ;; How it integrates
    (~docs/section :title "How It Works" :id "how"
      (ol :class "list-decimal list-inside text-stone-700 space-y-2"
        (li (code "defcomp") " parses " (code ":affinity") " annotation between params and body")
        (li "Component object stores " (code "affinity") " field (\"auto\", \"client\", or \"server\")")
        (li (code "compute-all-io-refs") " scans transitive IO deps at registration time")
        (li (code "render-target") " in deps.sx combines affinity + IO analysis → \"server\" or \"client\"")
        (li "Server partial evaluator (" (code "_aser") ") checks " (code "render_target") ":")
        (ul :class "list-disc pl-8 text-stone-600"
          (li "\"server\" → expand component, embed rendered HTML")
          (li "\"client\" → serialize as SX, let client render"))
        (li "Client routing uses same info: IO deps in page registry → proxy registration")))

    ;; Verification
    (div :class "rounded-lg border border-amber-200 bg-amber-50 p-4 text-sm space-y-2"
      (p :class "font-semibold text-amber-800" "How to verify")
      (ol :class "list-decimal list-inside text-amber-700 space-y-1"
        (li "View page source — components with render-target \"server\" are expanded to HTML")
        (li "Components with render-target \"client\" appear as " (code "(~plans/content-addressed-components/name ...)") " in the SX wire format")
        (li "Navigate away and back — client-routable pure components render instantly")
        (li "Check the analysis table above — it shows live data from the server's component registry")))))