#!/bin/env bash

set -e

KATEX="https://cdn.jsdelivr.net/npm/katex@0.15.1/dist/"

mkdir -p pub/

rm -f res/diag/*
mkdir -p res/diag

cp index.md pub/index.md
printf "\n\n" >>pub/index.md

export MERMAID_FILTER_FORMAT="svg"
export MERMAID_FILTER_THEME="dark"
export MERMAID_FILTER_BACKGROUND="transparent"
export MERMAID_FILTER_LOC="res/diag"
export MERMAID_FILTER_IMAGE_CLASS="mermaid"

ARGS="-A append.html -F mermaid-filter --toc --css style.css -t html -s --katex="$KATEX""

# public
for file in $(ls -1 md/*.md | sort -r); do
	EXTRA=""
	plot="$(head -n10 "$file" | grep -m 1 plot | cut -c 7-)"
	[[ "$plot" = "true" ]] && EXTRA="-A plot.html"

	name="$(basename $file | cut -f 1 -d '.')"
	pandoc $ARGS $EXTRA "$file" -o "pub/$name".html &
	title="$(head -n10 "$file" | grep -m 1 ^title | cut -c 8-)"
	date="$(head -n10 "$file" | grep -m 1 ^date | cut -c 6-)"
	author="$(head -n10 "$file" | grep -m 1 ^author | cut -c 8-)"
	count="$(pandoc --lua-filter wordcount.lua "$file")"
	echo "- [$title]($name.html) $date · $count words · $author" >>pub/index.md
	echo "generated $title"
done

for job in $(jobs -p); do
	wait "$job" || echo "$job failed"
done

pandoc --css index.css --css style.css -t html pub/index.md -s --katex="$KATEX" -o pub/index.html

cp *.rss pub/
cp *.css pub/
cp -r res/ pub/

rm pub/index.md