#!/bin/zsh

list_comments() {
  base="$1"
  
  for each in $(ls -r Wiki/${base}.comment.<0000000001-9999999999>_<000-999>); do
    author=$(grep -m1 '^author=' "$each" |cut -d= -f2-)
    echo "<div class='comment'><h1>$author wrote:</h1><div class='wikitext'>"
    tail -n+2 $each |_wiki
    echo '</div></div>'
  done
}

add_comment(){
  info="$1"

  cat <<-WikiEND
	<a id='comment_button' class='function' href='#'
	   onclick='javascript:show_screen("comment");hide_screen("comment_button");'>Comment / Ask</a>
	<div id="comment" style="display: none;">
	  <form action="./?action=wikimeta&i=$info" method="post" accept-charset="UTF-8">
	    <b>Comment:</b><br>
	    <textarea name="comm" rows="6" style="width:99%;"></textarea><br>
	    <input type="submit" value="Submit">
	    <a class="function" href="#" onclick="javascript:hide_screen('comment');show_screen('comment_button');">Cancel</a>
	  </form>
	</div>
	WikiEND
}

wikitext="$(_wiki Wiki/"${info}${rev}")"
wikitoc="$(echo -E "$wikitext" \
           | sed -rn '/<h[0-9]>.+<\/h[0-9]>/s;^.*<h([0-9])><a name="(.+)">(.+)</a></h[0-9]>.*$;<a class="i\1" href="#\2">\3</a><br>;p'
          )"

cat <<WikiEND
    <div id="LEFT">
      <form method="GET" action="./" accept-charset="utf-8">
	<input type="hidden" name="p" value="Wiki">
	<input type="text" name="s" placeholder="Search"><br>
	<input type="submit" value="Search Wiki">
      </form>
      <hr>

      <b>Revisions:</b>
      $(rno=1; for each in Wiki/$info.<0000000000-9999999999>; do
  	revi=$(cut -d. -f2 <<<"$each")
  	echo "<a class='rev' href='?p=Wiki&amp;i=$info&amp;r=$revi'>$rno</a>"
  	rno=$(($rno+1))
        done) <a class='rev' href='?p=Wiki&amp;i=$info'>Latest</a><br>
      <hr>
      $($LOGIN && if [ -z "$lock" ]; then
          [ -z "$rev" ] && echo "<a class='function' href='./?action=lock&amp;p=Wiki&amp;e=$info'>edit this page</a>"
	  [ -n "$rev" ] && echo "Click <a class='function' href='./?action=lock&amp;p=Wiki&amp;e=${info}&amp;r=${rev:s/.//}'>edit</a> to derive a new page revision from this one."
        else
  	  echo "<b>This page is currently being edited by $lock</b><a class='function' href='./?action=lock&amp;p=Wiki&amp;e=$info'>edit anyway</a>"
        fi
        $LOGIN && echo '<hr>')
      <h1>Table of Content</h1>
      <div class="toc">
        ${wikitoc}
      </div>
      <hr>
    </div>
    <div id="MAIN">
      <div class="wiki"><div class="wikitext">
        <h1 class="wikihead">$title</h1>
        ${wikitext}
      </div></div>
    </div>

    <div id="RIGHT">
      $($LOGIN && add_comment $info)
      $(list_comments $info)
    </div>
WikiEND