#!/bin/bash
set -e


mkdir -p "${HOME}/public_gopher/blog" > /dev/null
mkdir -p "${HOME}/public_gemini/blog" > /dev/null
mkdir -p "${HOME}/public_html/blog" > /dev/null

srcDir=$HOME/blog
postDir=$srcDir/posts

htmlIndexTmpl=$srcDir/index.tmpl.html
htmlDir=$HOME/public_html/blog
htmlIndex=$HOME/public_html/blog/index.html

gopherPath=$HOME/public_gopher/blog
gopherIndex="${gopherPath}/gophermap"

geminiPath=$HOME/public_gemini/blog
geminiIndex="${geminiPath}/index.gmi"

# attempt compilation
if [ ! -e "linkpost" ]
then
  go build -o linkpost main.go
fi

lp="$(pwd)/linkpost"

# backup HTML index
if [ -e "${htmlIndex}" ]
then
  cp $htmlIndex "${htmlIndex}.bak"
fi

cp $htmlIndexTmpl $htmlIndex

# Remove old gopher and gemini posts
rm -f ${gopherPath}/*
rm -f ${geminiPath}/*

# Initialize blog gophermap
echo "!the phlog of vilmibm as it were" > $gopherIndex
echo >> $gopherIndex

# Initialize blog index for gemini
echo "the gemblog of vilmibm as it were" > $geminiIndex
echo >> $geminiIndex

cd $postDir > /dev/null

for p in $(ls *.md | sort -r)
do
  pubdate=$(grep "pubdate:" $p | sed 's/pubdate: //')
  title=$(grep "title:" $p | sed 's/title: //')
  slug=$(grep "slug:" $p | sed 's/slug: //' | tr -d \[:blank:\])
  if [ -z "$pubdate" ] || [ -z "$title" ] || [ -z "$slug" ]
  then
    echo "warning: missing at least one of: pubdate, slug, title in ${p}"
  else
    # HTML
    echo "<div class=\"title\">" >> $htmlIndex
    echo "<h2>${title}<a name=\"${slug}\"></a></h2>" >> $htmlIndex
    echo "<a class=\"pubdate\" href=\"https://tilde.town/~vilmibm/blog#${slug}\">${pubdate}</a>" >> $htmlIndex
    echo "</div>" >> $htmlIndex
    echo "<div class=\"post\">" >> $htmlIndex
    grep -v "pubdate:" $p | grep -v "title:" | grep -v "slug:" | $lp --mode "html" | pandoc -fmarkdown -thtml >> $htmlIndex
    echo "</div>" >> $htmlIndex


    # Gopher
    echo "0${title}	${slug}.txt" >> $gopherIndex
    gopherPostPath="${gopherPath}/${slug}.txt"
    echo "# ${title}" > $gopherPostPath
    echo >> $gopherPostPath
    echo "_published ${pubdate}_" >> $gopherPostPath
    grep -v "pubdate:" $p | grep -v "title:" | grep -v "slug:" | $lp --mode "gopher" >> $gopherPostPath

    # Gemini
    echo "=> gemini://tilde.town/~vilmibm/blog/${slug}.gmi ${title}" >> $geminiIndex
    geminiPostPath="${geminiPath}/${slug}.gmi"
    echo "# ${title}" > $geminiPostPath
    echo >> $geminiPostPath
    echo "_published ${pubdate}_" >> $geminiPostPath
    grep -v "pubdate:" $p | grep -v "title:" | grep -v "slug:" | $lp --mode "gemini" >> $geminiPostPath
  fi
done

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