;; Phase 5 — rich inline text (structured runs). Acceptance suite.

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

;; one-run helper: a CtText with a single marked run
(define
  one
  (fn (marks href) (mk-rich-text "p" (list (mk-run "x" marks href)))))

;; ── (1) four render modes ──
;; a paragraph mixing plain + bold + a link
(define
  rd
  (doc-append
    (doc-empty "d")
    (mk-rich-text
      "p"
      (list
        (mk-run "the " (list) "")
        (mk-run "cat" (list :bold) "")
        (mk-run " and " (list) "")
        (mk-run "dog" (list :italic :link) "/d")
        (mk-run " sat" (list) "")))))
(define p (doc-find rd "p"))
(content-test
  "asHTML rich"
  (asHTML rd)
  "<p>the <strong>cat</strong> and <a href=\"/d\"><em>dog</em></a> sat</p>")
(content-test
  "asMarkdown rich"
  (asMarkdown rd)
  "the **cat** and [_dog_](/d) sat")
(content-test
  "asSx rich"
  (asSx rd)
  "(article (p \"the \" (strong \"cat\") \" and \" (a :href \"/d\" (em \"dog\")) \" sat\"))")
(content-test
  "asText rich is plain (no markup)"
  (asText rd)
  "the cat and dog sat")

;; every mark renders in HTML
(content-test
  "mark bold html"
  (asHTML (one (list :bold) ""))
  "<p><strong>x</strong></p>")
(content-test
  "mark italic html"
  (asHTML (one (list :italic) ""))
  "<p><em>x</em></p>")
(content-test
  "mark underline html"
  (asHTML (one (list :underline) ""))
  "<p><u>x</u></p>")
(content-test
  "mark strike html"
  (asHTML (one (list :strikethrough) ""))
  "<p><s>x</s></p>")
(content-test
  "mark code html"
  (asHTML (one (list :code) ""))
  "<p><code>x</code></p>")
(content-test
  "mark sub html"
  (asHTML (one (list :subscript) ""))
  "<p><sub>x</sub></p>")
(content-test
  "mark sup html"
  (asHTML (one (list :superscript) ""))
  "<p><sup>x</sup></p>")
(content-test
  "mark link html"
  (asHTML (one (list :link) "/u"))
  "<p><a href=\"/u\">x</a></p>")

;; markdown marks
(content-test "mark bold md" (asMarkdown (one (list :bold) "")) "**x**")
(content-test "mark italic md" (asMarkdown (one (list :italic) "")) "_x_")
(content-test
  "mark strike md"
  (asMarkdown (one (list :strikethrough) ""))
  "~~x~~")
(content-test "mark code md" (asMarkdown (one (list :code) "")) "`x`")
(content-test "mark link md" (asMarkdown (one (list :link) "/u")) "[x](/u)")
(content-test
  "mark underline md fallback"
  (asMarkdown (one (list :underline) ""))
  "<u>x</u>")

;; nested marks (bold+italic) — deterministic nesting order
(content-test
  "nested marks html"
  (asHTML (one (list :bold :italic) ""))
  "<p><em><strong>x</strong></em></p>")

;; escaping still happens inside runs
(content-test
  "run text escaped html"
  (asHTML (mk-rich-text "p" (list (mk-run "a & b <c>" (list :bold) ""))))
  "<p><strong>a &amp; b &lt;c&gt;</strong></p>")

;; rich heading + quote + code
(content-test
  "rich heading html"
  (asHTML
    (st-iv-set!
      (mk-heading "h" 2 "")
      "text"
      (list (mk-run "Big " (list) "") (mk-run "bold" (list :bold) ""))))
  "<h2>Big <strong>bold</strong></h2>")
(content-test
  "rich quote html"
  (asHTML
    (st-iv-set!
      (mk-quote "q" "" "")
      "text"
      (list (mk-run "wise" (list :italic) ""))))
  "<blockquote><em>wise</em></blockquote>")
;; code is verbatim — runs concatenate as plain text, marks ignored
(content-test
  "code runs plain html"
  (asHTML
    (st-iv-set!
      (mk-code "c" "py" "")
      "text"
      (list (mk-run "a=" (list :bold) "") (mk-run "1" (list) ""))))
  "<pre><code class=\"language-py\">a=1</code></pre>")

;; ── (2) backward compat: plain-string CtText unchanged ──
(content-test
  "plain html"
  (asHTML (mk-text "q" "hi & <b>"))
  "<p>hi &amp; &lt;b&gt;</p>")
(content-test "plain sx" (asSx (mk-text "q" "hi")) "(p \"hi\")")
(content-test "plain md" (asMarkdown (mk-text "q" "hi")) "hi")
(content-test "plain text" (asText (mk-text "q" "hi")) "hi")
(content-test
  "plain heading html"
  (asHTML (mk-heading "h" 3 "T"))
  "<h3>T</h3>")

;; ── (3) find-replace across runs (per-run, marks preserved) ──
(define
  frd
  (doc-append
    (doc-empty "d")
    (mk-rich-text
      "p"
      (list
        (mk-run "the Foo" (list :bold) "")
        (mk-run " and Foo here" (list) "")))))
(define frr (content/find-replace frd "Foo" "Bar"))
(content-test
  "find-replace rich plain text"
  (asText frr)
  "the Bar and Bar here")
(content-test
  "find-replace rich preserves marks"
  (asHTML frr)
  "<p><strong>the Bar</strong> and Bar here</p>")
(content-test
  "find-replace rich run0 still bold"
  (nth (nth (blk-get (doc-find frr "p") "text") 0) 1)
  (list "bold"))

;; ── (4) search-text via asText, across run boundary ──
;; "cat sat" spans run1 ("the cat") and run2 (" sat")
(define
  sd
  (doc-append
    (doc-empty "d")
    (mk-rich-text
      "p"
      (list (mk-run "the cat" (list :bold) "") (mk-run " sat" (list) "")))))
(content-test
  "search finds substring across runs"
  (content/search-text-ids sd "cat sat")
  (list "p"))
(content-test "search miss" (content/search-text-ids sd "zzz") (list))

;; ── (5) CRDT invariant — runs are an opaque block-level value ──
(define ra (list (mk-run "x" (list :bold) "")))
(define rb (list (mk-run "y" (list :italic) "")))
(define
  s1
  (crdt-insert
    (crdt-empty)
    "p"
    "text"
    (crdt-pos 5 "a")
    {:text ra}
    1
    "a"))
(define s2 (crdt-update s1 "p" "text" rb 2 "b"))
(content-test
  "crdt merge commutes with runs"
  (get (crdt-merge s1 s2) :elements)
  (get (crdt-merge s2 s1) :elements))
(content-test
  "crdt merge idempotent with runs"
  (get (crdt-merge s2 s2) :elements)
  (get s2 :elements))
;; LWW: later ts (rb, ts 2) wins; runs survive as the field value
(content-test
  "crdt LWW keeps latest runs"
  (asHTML
    (crdt-element->block (get (get (crdt-merge s1 s2) :elements) "p")))
  "<p><em>y</em></p>")

;; ── (6) data + wire round-trip runs losslessly ──
(content-test
  "data round-trip rich html"
  (asHTML (content/from-data (content/to-data rd)))
  (asHTML rd))
(content-test
  "data round-trip rich text"
  (asText (content/from-data (content/to-data rd)))
  "the cat and dog sat")
(content-test
  "wire round-trip rich html"
  (asHTML (content/from-wire (content/to-wire rd)))
  (asHTML rd))