#!/bin/bash
#
# Generates HTML fragment for document list
#
#  Copyright (C) 2013, 2015  Mike Gerwitz
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
##

# ensure extglob is on for !() syntax
shopt -s extglob || exit $?

echo '<ol class="docs">'

# paths are expected to be on their own line
while read f; do
  [ -f "$f" ] || continue

  fn="${f%.*}"
  base="$( basename "$fn" )"
  src=$fn.@(txt|pg|tex)
  [ -f $src ] || src="$fn/$base".@(txt|pg|tex)

  # the docs/papers prefix will be stripped from the link and the link title
  # will be taken from the first line of the source file; the source file is
  # guessed by simply stripping the html suffix off of the filename and
  # globbing for any non-html suffix
  printf '<li><a href="/papers/%s">%s</a></li>\n' \
    "${fn#docs/papers/}" \
    "$( head -n1 $src | sed 's/^% //' )"
done

echo '</ol>'

# finally, include highlighted thoughts
echo '<h3>Thoughts</h3>'
echo '<ol class="docs">'

# TODO: use hashcache abstraction via repo2html...file format could change
# TODO: would be useful to sort on subject
for c in docs/papers/thoughts/*; do
  grep "^${c##*/*_}" .hashcache \
    | head -n1 \
    | { read h u t && printf '<li><a href="/%s">%s</a></li>\n' "$u" "$t"; }
done

echo '</ol>'