;; Extension — portable data serialization (to-data / from-data round-trip).

(st-bootstrap-classes!)
(content/bootstrap!)
(content-bootstrap-text!)
(content-bootstrap-markdown!)
(content-bootstrap-section!)
(content-bootstrap-table!)

;; ── block->data shape ──
(define h (mk-heading "h" 2 "Hi"))
(content-test "block->data id" (get (block->data h) :id) "h")
(content-test "block->data type" (get (block->data h) :type) "heading")
(content-test "block->data fields" (get (block->data h) :fields) {:text "Hi" :level 2})

;; ── round-trip a mixed document with metadata ──
(define
  d
  (doc-with-meta
    (doc-append
      (doc-append
        (doc-append
          (doc-append (doc-empty "post") (mk-heading "h" 1 "Title"))
          (mk-text "p" "Body"))
        (mk-image "img" "/c.png" "cat"))
      (mk-list "l" true (list "a" "b")))
    {:slug "s" :title "T" :tags (list "x" "y")}))

(define rt (content/from-data (content/to-data d)))
(content-test "rt id" (doc-id rt) "post")
(content-test "rt title" (doc-title rt) "T")
(content-test "rt slug" (doc-slug rt) "s")
(content-test "rt tags" (doc-tags rt) (list "x" "y"))
(content-test "rt ids" (doc-ids rt) (list "h" "p" "img" "l"))
(content-test "rt render" (asHTML rt) (asHTML d))
(content-test
  "rt heading level"
  (blk-send (doc-find rt "h") "level")
  1)
(content-test
  "rt list items"
  (blk-send (doc-find rt "l") "items")
  (list "a" "b"))

;; ── nested sections round-trip ──
(define
  ds
  (doc-append
    (doc-empty "d")
    (mk-section
      "s"
      (list
        (mk-heading "nh" 2 "N")
        (mk-section "i" (list (mk-text "x" "deep")))))))
(define rts (content/from-data (content/to-data ds)))
(content-test "rt nested render" (asHTML rts) (asHTML ds))
(content-test "rt nested tree-ids" (doc-tree-ids rts) (doc-tree-ids ds))
(content-test
  "rt nested deep-find"
  (str (blk-send (doc-deep-find rts "x") "text"))
  "deep")

;; ── table round-trip ──
(define
  dtb
  (doc-append
    (doc-empty "d")
    (mk-table "t" (list "A" "B") (list (list "1" "2")))))
(define rtt (content/from-data (content/to-data dtb)))
(content-test "rt table render" (asHTML rtt) (asHTML dtb))
(content-test
  "rt table headers"
  (table-headers (doc-find rtt "t"))
  (list "A" "B"))

;; ── data is plain (no st-instance markers at top level) ──
(define dat (content/to-data d))
(content-test "data id field" (get dat :id) "post")
(content-test "data block count" (len (get dat :blocks)) 4)
(content-test
  "data first block type"
  (get (first (get dat :blocks)) :type)
  "heading")

;; ── empty doc round-trip ──
(content-test
  "rt empty ids"
  (doc-ids (content/from-data (content/to-data (doc-empty "e"))))
  (list))
(content-test
  "rt no-meta title nil"
  (doc-title (content/from-data (content/to-data (doc-empty "e"))))
  nil)