#!/bin/sh

blog_domain='https://lucy.moe/'

output() {
    echo "$1" >> dist/posts-table.html
}

output_rss() {
    echo "$1" >> dist/rss.xml
}

add_header() {
    output '<table>
<colgroup>
<col style="width: 70%" />
<col style="width: 30%" />
</colgroup>
<thead>
<tr class="header">
<th style="text-align: left">title</th>
<th style="text-align: right">date</th>
</tr>
</thead>
<tbody>'
    output_rss '<?xml version="1.0" encoding="UTF-8" ?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
   <author><name>Lucy</name></author>
   <title type="text">Lucys blog</title>'
    output_rss "   <updated>$(date --iso-8601=seconds)</updated>
   <id>https://lucy.moe/rss.xml</id>
   <link href=\"https://lucy.moe/rss.xml\" rel=\"self\" type=\"application/atom+xml\"/>"
}

add_footer() {
    html_entry "https://asagi.moe" "before July 2020" "Old site"
    output '</tbody>
</table>'
    output_rss '</feed>'
}

html_entry() {
    output '<tr>'
    webpath="$1"
    time="$2"
    title="$3"
    output "<td><a href=\"$webpath\">$title</a></td>"
    output "<td style=\"text-align: right\">$time</td></tr>"
}

rss_entry() {
    # this is made to represent what heise.de has done with
    # their rss/atom feeds and doesn't need any escaping
    output_rss "  <entry>
    <title type=\"text\">$1</title>
    <published>$(date --iso-8601=seconds -d $4)</published>
    <updated>$(date --iso-8601=seconds -r $3)</updated>
    <id>$blog_domain$2</id>
    <link href=\"$blog_domain$2\" type=\"text/html\" title=\"$1\"/>
    <summary type=\"html\">
$(grep -h '^<p>' "dist/$2" | head -n 1 | sed 's/<p>//;s/<\/p>//;/<!--/d;s/^/         /')
    </summary>
    <content type=\"html\" xml:base=\"$blog_domain$2\"><![CDATA[
$(pandoc $3 | sed '/<!--/d;s/^/         /')]]>
    </content>
  </entry>"
}

create_entry() {
    path="$9"
    outpath="$(basename "$path" .md).html"
    created=$(grep -h '^date: ' "$path" | sed 's/date: //g')
    created_date=$(date +'%b %d, %Y' --date="$created")
    published_date=$(date --iso-8601=seconds --date="$created")
    # convert new markdown posts to html
    pandoc -s --css=/css/sakura-vader.css --template=./pandoc-template-v2.2.1.html5 \
        -V og-url="https://$outpath" -V published-date="$published_date" \
        -V include-footer="$footer" \
        src/meta/default.yaml "$path" -t html5 -f markdown -o "dist/$outpath"
    # then add it to the index
    title=$(grep -h '<title>' "dist/$outpath" | sed 's/<title>//g;s/<\/title>//g')
    html_entry "$outpath" "$created_date" "$title"
    rss_entry "$title" "$outpath" $path $created
}

convert_static() {
    path="$9"
    outpath="$(basename "$path" .md).html"
    pandoc -s --css=/css/sakura-vader.css --template=./pandoc-template-v2.2.1.html5 "$path" \
        -V include-footer="$footer" \
        -t html5 -f markdown -o "dist/$outpath"

}

has_updates() {
    git fetch &> /dev/null
    diff="$(git diff master origin/master)"
    if [ "$diff" ]; then
        return 0
    else
        return 1
    fi
}

footer="$(cat src/footer/footer.html)"
cd /home/lucy/blog-content/
rm -R dist/*
rsync -q --delete -avxt static/ dist/
add_header
ls -lr src/posts/*.md | tail -n+1 | while read f; do create_entry $f; done
ls -l src/*.md | tail -n+1 | while read f; do convert_static $f; done
add_footer
pandoc -s --css=/css/sakura-vader.css \
    -V include-after="$footer" \
    src/index/index_header.md dist/posts-table.html src/index/after-entry-list.md \
    -t html5 -f markdown -o dist/index.html