#!/bin/sh

dir="$(dirname "$(readlink -e "$0")")"

if [ "$1" = "" ] || [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
    echo "Usage: doc.sh <template> <input file>"
    exit 0
elif [ "$1" = "-l" ] || [ "$1" = "--list-templates" ]; then
    find "$dir" -name "*.template.html" | sed -e "s!$dir/!!g" -e "s!.template.html!!g" | sort
    exit 0
fi

template="$1"
input="$2"

output="$3"
if [ "$output" = "" ]; then
    output=$(echo "$input" | rev | cut -d"." -f2- | rev)
    output="$output.pdf"
fi

title=$(grep -m 1 "^# " "$input" | sed "s/^# //g")

pandoc --standalone\
       -f gfm\
       --pdf-engine weasyprint\
       --metadata "title=$title"\
       --template="$dir/$template.template.html"\
       -o "$output"\
       "$input"