#!/bin/bash

set -e

pd=/usr/bin/pandoc
g=/bin/grep
postDir=/home/vilmibm/blog

function makeHTML() {
  htmlDir=/home/vilmibm/public_html/blog
  htmlIndexTmpl=/home/vilmibm/blog/index.tmpl.html
  htmlIndex=/home/vilmibm/public_html/blog/index.html


  if [ -e "${htmlIndex}" ]
  then
    cp $htmlIndex "${htmlIndex}.bak"
  fi

  cp $htmlIndexTmpl $htmlIndex

  cd $postDir > /dev/null
  for p in $(ls *.md)
  do
    pubdate=$($g "pubdate:" $p | sed 's/pubdate://')
    title=$($g "title:" $p | sed 's/title://')
    slug=$($g "slug:" $p | sed 's/slug://' | tr -d \[:blank:\])
    if [ -z "$pubdate" ] || [ -z "$title" ]
    then
      echo "warning: missing at least one of: pubdate, slug, title in ${p}"
    else
      echo "<h2 class=\"title\">${title}</h2>" >> $htmlIndex
      echo "<a class=\"pubdate\" name=\"${slug}\" href=\"https://tilde.town/~vilmibm/blog#${slug}\">${pubdate}</a>" >> $htmlIndex
      echo "<div class=\"post\">" >> $htmlIndex
      $g -v "pubdate:" $p | $g -v "title:" | $g -v "slug:" |$pd -fmarkdown -thtml >> $htmlIndex
      echo "</div>" >> $htmlIndex
    fi
  done

  echo "</body></html>" >> $htmlIndex
}

#function makeGopher() {
#  # TODO
#}
#
#function makeGemini() {
#  # TODO
#}

makeHTML