#!/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 md in $( echo "$INFILES" | grep '.md$' ) 
do
	if [[ -f $WD/$md ]]
	then 
		# create parent dir if necassary
        md_no_parent=$( echo $md | sed 's@\.\./@@g' )
		mkdir -p $(dirname $md_no_parent)
		tex=$( echo $md_no_parent | sed "s/\.md$/\.tex/" )
		$CONVERTER $WD/$md > $tex
		echo "converted $md to $tex"
	else 
		if [[ $md == *.md ]]
		then
			echo "$WD/$md does not exist!!!"
		fi
	fi
done 

# CREATE WRAPPER 
WRAPPER="""
\documentclass[twoside,${PAGESIZE}paper]{$DOCCLASS}
\usepackage[fontsize=${FONTSIZE}pt]{fontsize}
\usepackage{libertine} % also loads fontspec which is needed for ɔ and ɛ
%\usepackage{minitoc} % make mini table of content for each chapter
\usepackage{graphicx} % include graphics
\usepackage{tcolorbox} % https://en.wikipedia.org/wiki/Colophon_(publishing)
\usepackage{placeins} % https://tex.stackexchange.com/a/88659/264579
\usepackage{csquotes} % \enquote
\usepackage{reledmac} % needed for repedpar
\usepackage{reledpar} % parallel text
\firstlinenum*{1000}
\linenumincrement*{1000}
\newcommand{\pagesinclude}[2]{
	\begin{pages}
		\begin{Leftside}
			\beginnumbering
			\pstart\input{#1}\pend
			\endnumbering
		\end{Leftside}
		\begin{Rightside}
			\beginnumbering
			\pstart\input{#2}\pend
			\endnumbering
		\end{Rightside}
	\end{pages} 
	\Pages
}
\title{$TITLE}
\author{$AUTHOR}
%\usepackage[showframe]{geometry}
\begin{document}
"""
TITLE_PAGE=""" 
\begin{titlingpage} %This starts the title page
		% center textblock on page % https://tex.stackexchange.com/a/378157/264579
		\setlrmarginsandblock{2.5cm}{*}{1}
		\setulmarginsandblock{2.5cm}{*}{1}
		\checkandfixthelayout 
		\begin{flushright}
		\hrule width \hsize height 2pt 
		\kern 1mm 
		\hrule width \hsize 
			\vskip 1.5em
			\Huge
			$TITLE\par
%			\vskip 0.5em
			\huge
			$SUBTITLE
			\vskip 2em
			\Large
			$AUTHOR
			\vskip 1.5em
		\hrule width \hsize 
		\kern 1mm 
		\hrule width \hsize height 2pt 
			\vspace*{\fill}
			\LARGE
			$PUBLISHER
%			\vskip 2em
		\end{flushright}
\end{titlingpage}
"""
COLOPHON="""
\cleardoublepage
\thispagestyle{empty}
\begin{vplace}[0.7]
\begin{centering}
    \begin{huge}
        \thetitle
    \end{huge}
    \\
    \vspace{3cm}
    \begin{LARGE}
        \begin{tcolorbox}[width=.5\textwidth]
            \centering
            \texttt{$PUBLISHER}
        \end{tcolorbox}
    \end{LARGE}
%        \includegraphics[width=.3\textwidth]{img/onipa_logo.png}
    \vspace{2cm}
    \par\noindent\rule{\textwidth}{0.4pt}
    \large { \the\year{} }\\
    $EDITION\\
\end{centering}
\end{vplace}
\clearpage
"""
TOC="""
\cleardoublepage
\tableofcontents
"""
WRAPPER_END="""
\end{document}
"""

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

# CREATE PDF 
echo $TMPDIR
for i in $(seq 1 $COMPILATION_RUNS )
do
	$LATEX_ENGINE $PROJECT.tex # 2&> /dev/null
	echo ${i}-th compilation finished
done 
#$LATEX_ENGINE $PROJECT.tex # 2&> /dev/null
# $LATEX_ENGINE $PROJECT.tex 
popd > /dev/null
rm -rf $WD/$PROJECT
cp -r $TMPDIR $WD/$PROJECT/
echo "File $PROJECT.pdf created at $WD/$PROJECT/"
rm -rf $TMPDIR