wiki fix

lib/ui/windows/wiki_window.rb

@@ -4,7 +4,8 @@ module UI
   module Windows
     module_function
 
-    # Split-view wiki browser. Left=titles, right=selected page content.
+    # Split-view wiki browser. Left=titles, right=selected page content
+    # (rendered with markdown-aware formatting).
     def wiki(app, services:, category:, title:)
       cols = app.cols
       rows = app.rows
@@ -38,7 +39,7 @@ module UI
         next unless page
         meta.text = "#{page.created_at.to_s[0, 10]}  #{services[:wiki].page_url(page.locale, page.path)}"
         text = services[:wiki].content(page.id)
-        preview.lines = wrap_md(text, preview.bounds.width - 1)
+        preview.lines = format_md(text, preview.bounds.width - 1, app.theme)
         preview.scroll = 0
       end
 
@@ -56,27 +57,159 @@ module UI
       window
     end
 
-    def wrap_md(text, width)
-      stripped = text.to_s
-                   .gsub(/\[([^\]]+)\]\([^)]+\)/, '\1')
-                   .gsub(/[#*_`~>|\\]/, '')
-                   .gsub(/\r?\n+/, ' ')
-                   .strip
-      words = stripped.split
-      lines = []
-      cur = +''
-      words.each do |w|
-        if cur.empty?
-          cur << w
-        elsif cur.length + 1 + w.length <= width
-          cur << ' ' << w
-        else
-          lines << cur.dup
-          cur = +w
-        end
+    # ── Markdown → ANSI line array ────────────────────────────────────────────
+    #
+    # Returns an array of strings (each is one rendered terminal line with
+    # embedded ANSI SGR escapes) suitable for BBS::Widgets::ScrollView.
+    #
+    # Each inline span is terminated by the theme :text SGR so the trailing
+    # text on the same line keeps the right background color.
+    def format_md(text, width, theme)
+      styles = {
+        base:    theme[:text],
+        h1:      theme[:text_bright],
+        h2:      theme[:accent],
+        h3:      theme[:label],
+        bold:    theme[:text_bright],
+        italic:  theme[:text_dim],
+        code:    theme[:label],
+        link:    theme[:accent],
+        quote:   theme[:text_dim],
+        bullet:  theme[:accent],
+        rule:    theme[:label],
+      }
+      result    = []
+      paragraph = []
+      in_code   = false
+      base      = styles[:base]
+
+      flush_paragraph = lambda do
+        next if paragraph.empty?
+        joined = paragraph.join(' ').gsub(/\s+/, ' ').strip
+        BBS::FrameBuffer.wrap_ansi(inline_md(joined, styles, base), width)
+                        .each { |l| result << l }
+        paragraph.clear
       end
-      lines << cur unless cur.empty?
-      lines.empty? ? [''] : lines
+
+      text.to_s.split(/\r?\n/).each do |line|
+        # Fenced code block toggle
+        if line.lstrip.start_with?('```')
+          flush_paragraph.call
+          in_code = !in_code
+          next
+        end
+
+        if in_code
+          flush_paragraph.call
+          BBS::FrameBuffer.clip_ansi(line, width).then do |clipped|
+            result << "#{styles[:code]}#{clipped}#{base}"
+          end
+          next
+        end
+
+        # Blank line: paragraph break
+        if line.strip.empty?
+          flush_paragraph.call
+          result << ''
+          next
+        end
+
+        # ATX header
+        if (m = line.match(/\A([#]{1,6})\s+(.+?)\s*#*\s*\z/))
+          level   = m[1].length
+          heading = m[2].strip
+          flush_paragraph.call
+          style = level == 1 ? styles[:h1] : (level == 2 ? styles[:h2] : styles[:h3])
+          BBS::FrameBuffer.wrap_ansi(inline_md(heading, styles, base), width).each do |l|
+            result << "#{style}#{l}#{base}"
+          end
+          next
+        end
+
+        # Horizontal rule: --- *** ___
+        if line.match?(/\A\s*([-*_])\1{2,}\s*\z/)
+          flush_paragraph.call
+          result << "#{styles[:rule]}#{'─' * width}#{base}"
+          next
+        end
+
+        # Blockquote
+        if (m = line.match(/\A\s*>\s?(.*)/))
+          content = m[1]
+          flush_paragraph.call
+          inner_w = [width - 2, 1].max
+          BBS::FrameBuffer.wrap_ansi(inline_md(content, styles, base), inner_w).each do |l|
+            result << "#{styles[:quote]}│ #{base}#{l}"
+          end
+          next
+        end
+
+        # Unordered list item
+        if (m = line.match(/\A(\s*)[-*+]\s+(.+)/))
+          indent = m[1].length
+          body   = m[2]
+          flush_paragraph.call
+          prefix_w = indent + 2
+          inner_w  = [width - prefix_w, 1].max
+          wrapped  = BBS::FrameBuffer.wrap_ansi(inline_md(body, styles, base), inner_w)
+          wrapped.each_with_index do |l, i|
+            pad = ' ' * indent
+            result << if i.zero?
+                        "#{pad}#{styles[:bullet]}•#{base} #{l}"
+                      else
+                        "#{' ' * prefix_w}#{l}"
+                      end
+          end
+          next
+        end
+
+        # Ordered list item
+        if (m = line.match(/\A(\s*)(\d+)\.\s+(.+)/))
+          indent = m[1].length
+          num    = m[2]
+          body   = m[3]
+          flush_paragraph.call
+          prefix = "#{' ' * indent}#{num}. "
+          inner_w = [width - prefix.length, 1].max
+          wrapped = BBS::FrameBuffer.wrap_ansi(inline_md(body, styles, base), inner_w)
+          wrapped.each_with_index do |l, i|
+            result << if i.zero?
+                        "#{' ' * indent}#{styles[:bullet]}#{num}.#{base} #{l}"
+                      else
+                        "#{' ' * prefix.length}#{l}"
+                      end
+          end
+          next
+        end
+
+        # Regular paragraph line — buffer for reflow
+        paragraph << line.strip
+      end
+
+      flush_paragraph.call
+      result
+    end
+
+    # Apply inline markdown formatting (bold, italic, code, links) and
+    # return the string with embedded ANSI codes. Each closing marker emits
+    # `base_sgr` so that surrounding text keeps the right background.
+    def inline_md(text, styles, base_sgr)
+      s = text.to_s
+      # Links [text](url) — show the link text styled (URL dropped)
+      s = s.gsub(/\[([^\]]+)\]\(([^)]+)\)/) { "#{styles[:link]}#{::Regexp.last_match(1)}#{base_sgr}" }
+      # Inline code `code`
+      s = s.gsub(/`([^`]+)`/) { "#{styles[:code]}#{::Regexp.last_match(1)}#{base_sgr}" }
+      # Bold **text**
+      s = s.gsub(/\*\*([^*]+)\*\*/) { "#{styles[:bold]}#{::Regexp.last_match(1)}#{base_sgr}" }
+      # Italic *text* and _text_ (require word boundaries to avoid mid-word _)
+      s = s.gsub(/(?<![A-Za-z0-9*])\*([^*\s][^*]*?[^*\s]|\S)\*(?![A-Za-z0-9*])/) {
+        "#{styles[:italic]}#{::Regexp.last_match(1)}#{base_sgr}"
+      }
+      s = s.gsub(/(?<![A-Za-z0-9_])_([^_\s][^_]*?[^_\s]|\S)_(?![A-Za-z0-9_])/) {
+        "#{styles[:italic]}#{::Regexp.last_match(1)}#{base_sgr}"
+      }
+      # Strip stray backslash escapes for common markdown chars
+      s.gsub(/\\([\\`*_{}\[\]()#+\-.!>])/) { ::Regexp.last_match(1) }
     end
   end
 end