#!/bin/bash 
# CREATE PDF from markdown files
#

#set -x 
set -e

if [ $# -eq 1 ] 
then 
	CONF=$1
else 
CONF="parallel.conf"
fi

CONVERTER="md2parallel.sh"

if ! [[ -f $CONF ]] ; then echo "$CONF not found! Exiting ..." && exit ; fi 
if ! [[ -f $CONVERTER ]] ; then echo "$CONVERTER not found! Exiting ..." && exit ; fi 
if ! [[ -x $CONVERTER ]] ; then echo "$CONVERTER not executable! Exiting ..." && exit ; fi 

. $CONF
# SAVE WORKING DIR
WD=$PWD
TMPDIR=$(mktemp -d) 
PATH=$PATH:$WD
pushd $TMPDIR > /dev/null

# CONVERT MD TO TEX 
for tex in $( echo $INFILES | grep '.md$' ) 
do
	if [[ -f $WD/$tex ]]
	then 
		# create parent dir if necassary
		mkdir -p $(dirname $tex)
		$CONVERTER $WD/$tex > $( echo $tex | sed "s/.md/.tex/" )
	else 
		if [[ $tex == *.md ]]
		then
			echo "$WD/$tex does not exist!!!"
		fi
	fi
done 

# CREATE WRAPPER 
WRAPPER="""
\documentclass[twoside]{$DOCCLASS}
\usepackage[fontsize=${FONTSIZE}pt]{fontsize}
\usepackage[${PAGESIZE}paper]{geometry}
\usepackage{libertine} % also loads fontspec which is needed for ɔ and ɛ
\usepackage{minitoc} % make mini table of content for each chapter
\usepackage{graphicx} % include graphics
\usepackage{csquotes} % \enquote
\usepackage{reledmac} % needed for repedpar
\usepackage{reledpar} % parallel text
\newcommand{\pagesinclude}[2]{
	\begin{pages}
		\begin{Leftside}
			\beginnumbering
			\pstart\input{#1}\pend
			\endnumbering
		\end{Leftside}
		\begin{Rightside}
			\beginnumbering
			\pstart\input{#2}\pend
			\endnumbering
		\end{Rightside}
	\end{pages} 
	\Pages
}
\title{$TITLE}
\author{$AUTHOR}
\begin{document}
\maketitle
\tableofcontents
"""
WRAPPER_END="""
\end{document}
"""

echo "$WRAPPER" > $PROJECT.tex
# INCLUDE INDIVIDUAL TEX FILE
first_lang="true"
for input in $INFILES
do 
	if [[ $input == *.md ]]
	then 
		if [[ $first_lang == "true" ]] ; then 
			echo '\pagesinclude' "{ $( echo $input | sed 's/.md/.tex/' ) }" >> $PROJECT.tex 
			first_lang="false"
		else
			echo "{ $( echo $input | sed 's/.md/.tex/' ) }" >> $PROJECT.tex 
			
		fi 
	else 
		#is chapter 
		echo '\chapter' " { $input }" >> $PROJECT.tex
	fi
	echo '\clearpage' >> $PROJECT.tex
done 
echo "$WRAPPER_END" >> $PROJECT.tex

# CREATE PDF 
$LATEX_ENGINE $PROJECT.tex 2&> /dev/null
$LATEX_ENGINE $PROJECT.tex 2&> /dev/null
# $LATEX_ENGINE $PROJECT.tex 
popd > /dev/null
cp -r $TMPDIR $WD/$PROJECT
echo "File $PROJECT.pdf created at $WD/$PROJECT/"
rm -rf $TMPDIR