#! /bin/sh

# Create a LaTeX document with genereic metadata, then open it with neovim (or vim as a fallback)

if [ -z "$1" ]; then
	echo "Please provide a name for your file"
elif [ -e $1 ]; then
	echo "This filename is already taken, please provide a different name"
else
	touch "$1"
	echo '% metadata' >> "$1"
	read -p "Which type is your document? (def: article) " class
	if [ -z "$class" ]; then
		class='article'
	fi
	echo "\\documentclass[a4paper, 12pt]{$class}" >> "$1"
	echo '' >> "$1"
	read -p "Do you want colors?(y/N) " colors
	if [ "$colors" = "y" ]; then
		echo '\usepackage[dvipsname]{xcolor}' >> "$1"
	fi
	read -p "Do you want hyperlinks management?(y/N) " links
	if [ "$links" = "y" ]; then
		if [ "$colors" != "y" ]; then
			echo '\usepackage[dvipsname]{xcolor}' >> "$1"
		fi
		echo '\usepackage[colorlinks=true, urlcolor=BrickRed]{hyperref}' >> "$1"
	fi
	read -p "Do you want bibliography management?(y/N) " bibliography
	if [ "$bibliography" = "y" ]; then
		read -p "Do you want to use apacite?(y/N) " apacite
		if [ $apacite = "y" ]; then
			echo '\usepackage{apacite}' >> "$1"
			bibstyle="apacite"
		else
			bibstyle="unsrt"
			echo 'The default style is _unsrt_ (you may change it at the end of the document)'
		fi
		bibfile="$(basename "$(find $HOME/documents/bibliographies/ -type f -not -path '*/\.*' | dmenu -l 20 -p "which bibliography?")")" # the -not -path allows find to ignore hidden files
		if [ -z "$bibfile" ]; then
			echo ''
			echo '##################################################'
			echo "Don't forget to specify the .bib file (\\bibliography{.bib}) at the end of the file          " | fold -w 46 | sed "s/$/\ \#/g" | sed "s/^/\#\ /g"
		echo '##################################################'
		echo ''
		fi
	fi
	read -p "Do you want to use another package? If so, please provide a package name; else, just press <Enter>: " package
	while [ -n "$package" ]; do
		echo "\usepackage{"$package"}" >> "$1"
		package=''
		read -p "Do you want to use another package? If so, please provide a package name: " package
	done
	echo '' >> "$1"
	echo '\author{David JULIEN}' >> "$1"
	read -p "What is the title of the document? " title
	echo "\\title{"$title"}" >> "$1"
	echo '' >> "$1"
	echo '%document' >> "$1"
	echo '\begin{document}' >> "$1"
	echo '' >> "$1"
	echo '\maketitle' >> "$1"
	echo '' >> "$1"
	if [ "$bibliography" = "y" ]; then
		echo "\bibliographystyle{$bibstyle}" >> "$1"
		echo "\bibliography{$HOME/documents/bibliographies/$bibfile}" >> "$1"
	fi
	echo '\end{document}' >> "$1"

	# check if neovim is installed
	if type "nvim" &> /dev/null; then
		nvim "$1"
	else
		vim "$1"
	fi
fi