#!/usr/bin/env bash

set -o nounset

usage() {
    cat <<EOF >&2
$0 <input file> <output file>
EOF
}

if (( $# != 2 )) ; then
    usage
    exit 1
fi

markdown_extensions=(
    blank_before_header
    space_in_atx_header
    blank_before_blockquote
    yaml_metadata_block
    backtick_code_blocks
    fancy_lists
    native_divs
    fenced_divs
    task_lists
    pipe_tables
)

function join_by { local d=$1; shift; local f=$1; shift; printf %s "$f" "${@/#/$d}"; }

pandoc \
    --from markdown+"$(join_by "+" "${markdown_extensions[@]}")"\
    --to pdf \
    --verbose \
    --email-obfuscation=none \
    --columns=2000 \
    --fail-if-warnings \
    --standalone \
    --variable tables=true \
    --variable euro=yes \
    --variable colorlinks=yes \
    --variable linestretch=1.3 \
    --variable papersize=a4 \
    --variable date=$(date --iso-8601=date) \
    --variable fontsize=12pt \
    --variable fontfamily=libertine \
    --variable familydefault=sfdefault \
    --variable documentclass=scrartcl \
    --variable fontfamilyoptions= \
    --variable lof= \
    --variable lot= \
    -i "${1}" \
    --output "${2}" \