VERSION=0.3

DATE=$(date +"%y-%m-%d")
export SHELL=/bin/bash
source ~/.config/glartex/config

usage(){
	echo -e "\v\t=== GLARTEX VERSION ${VERSION} ===\v\nUSAGE:\v\nglartex [options] <-f/-c/-C FILE>\v\n\t-e editor\tSet editor\n\t-v viewer\tSet viewer\n\t-b 0/1\tSet bibtex false/true\n\t-s 0/1\tSet synctex false/true\n\t-o 0/1\tSet swaymode false/true\n\t-x\tSame as -b 1 -s 1 -o 1\n\t-t TL\tInclude translate shell with target language TL\n\t-n NAME\tRename output\n\t-N NAME\tRename output and redirect to ./NAME_yy-mm-dd\v\n\t---Options override defaults from configfile---\v\n\t-f FILE\tEdit any file\n\t-c FILE\tEdit copy of file in working directory\n\t-C FILE\tEdit copy of file in new directory ./FILE_yy-mm-dd\v\n\t-h\tHelp\v\v\nglartex -T TEMPLATE\v\n\tEdit template in working directory\n\v\tTo edit template in new directory use \$glartex -C path/to/template\v\v\nglartex FILENAME\v\n\tIf file exists:\n\tSame as -f FILENAME\n\v\tIf file doesn't exist:\n\tEdit a copy of DEFAULT_TEMPLATE named FILENAME in new directory ./FILENAME_yy-mm-dd\v\v\nIMPORTANT:\n\v\tGlartex sources ~/.config/glartex/config\n\tTemplates are in ~/.config/glartex/templates\n\tSynctex works best with gedit and evince\n\tDepends on entr github.com/clibs/entr\n\tTranslate option depends on translate shell github.com/soimort/translate-shell\v\n\tTo change -o behaviour edit function swayorder\v\v\nAUTHOR:\v\n\tde-arl, [email protected]\v"
	1>&2
	exit 1
}

startedit(){
	pdflatex --synctex=1 --halt-on-error ${FILE}.tex
	exec ${EDITOR_COMMAND} ${SYNC_GEDIT} ${FILE}.tex &
	exec ${VIEWER} ${FILE}.pdf &
}

glartex_nobib(){
	echo ${FILE}.tex | entr -a -p -r pdflatex ${SYNC_PDFLATEX} --halt-on-error ${FILE}.tex &
}

glartex_bib(){
	echo ${FILE}.tex | entr -a -p -r bibcompile ${SYNC_BIBCOMPILE} -f ${FILE}  &
}

swayorder(){
	sleep 1 # Pause is necessary for containers to open and to be found by jq, find a working value for your system
	ID_VIEWER=$(swaymsg -t get_tree | jq -r --arg VIEWER_JQ "${VIEWER}" '.. | (.nodes? // empty)[] | select( .app_id == $VIEWER_JQ ) | .id')
	ID_EDITOR=$(swaymsg -t get_tree | jq -r --arg EDITOR_JQ "${EDITOR}" '.. | (.nodes? // empty)[] | select( .app_id == $EDITOR_JQ ) | .id')
	swaymsg [con_id=${ID_VIEWER}] move right
	swaymsg [con_id=${ID_EDITOR}] move up
	swaymsg [con_id=${ID_EDITOR}] move up
}

translate(){
	${TERM} -e trans -tl ${TARGET_LANGUAGE} &
}

set_editor(){
	export EDITOR_COMMAND=${OPTARG}
	export EDITOR=${OPTARG}
	if [[ ${OPTARG} == "vim" ]]; then
		export EDITOR_COMMAND="${TERM} -e vim";
	elif [[ ${OPTARG} == "nano" ]]; then
		export EDITOR_COMMAND="${TERM} -e nano";
	elif [[ ${OPTARG} == "vi" ]]; then
		export EDITOR_COMMAND="${TERM} -e vi";
	fi
}

set_syncvars(){
	SYNC_BIBCOMPILE="-s"
	SYNC_PDFLATEX="--synctex=1"
}

set_xvars(){
	BIBTEX="true"
	SWAY="true"
	SYNCTEX="true"
}

edit_copy_in_new_dir(){
	NAME=$(basename ${OPTARG})
	FILE=${NAME%.*}
	WORKDIR="${FILE}_${DATE}"
	mkdir ./${WORKDIR}
	cp ${OPTARG} ./${WORKDIR}/
	cd ${WORKDIR}
}

edit_copy(){
	cp ${OPTARG} ./
	NAME=$(basename ${OPTARG})
	FILE=${NAME%.*}
}

toggle_sway(){
	case ${OPTARG} in
		"1")
			SWAY="true"
			;;
		"0")
			SWAY="false"
			;;
	esac
}

toggle_bibtex(){
	case ${OPTARG} in
		"1")
			BIBTEX="true"
			;;
		"0")
			BIBTEX="false"
			;;
	esac
}

toggle_synctex(){
	case ${OPTARG} in
		"1")
			SYNCTEX="true"
			;;
		"0")
			SYNCTEX="false"
			;;
	esac
}

get_template(){
	TEMPLATE=${TEMPLATE_DIRECTORY}$1
	if [[ -f ${TEMPLATE} ]]; then
		cp ${TEMPLATE} ./
		NAME=$(basename $1)
		FILE=${NAME%.*}
	else
		echo -e "\tThe template you specified does not exist! You must specify the template with .tex suffix."
		exit 0
	fi
}

filename_substitution(){
		NAME=$(basename $1)
		FILE_DIR=$(dirname $1)
		FILE=${NAME%.*}
}

set_working_directory(){
	if [[ ${FILE_DIR} != ${PWD} ]]; then
	cd ${FILE_DIR}
	fi
}

new_default(){
	NAME=$1
	FILE=${NAME%.*}
	WORKDIR="${FILE}_${DATE}"
	mkdir ./${WORKDIR}
	cp ${DEFAULT_TEMPLATE} ./${WORKDIR}/${FILE}.tex
	cd ${WORKDIR}
}

rename(){
	mv ${FILE}.tex $1.tex
	FILE=$1
}

redir(){
	NAME=$1
	WORKDIR="${NAME}_${DATE}"
	mkdir ./${WORKDIR}
	if [[ ${TEMPLATE} == "true" ]]; then mv ${FILE}.tex ./${WORKDIR}/${NAME}.tex; else cp ${FILE}.tex ./${WORKDIR}/${NAME}.tex; fi

	FILE=${NAME%.*}
	cd ${WORKDIR}
}

if [[ $1 != -* && ! -f $1 && -n $1 ]]; then
	new_default $1
elif [[ $1 != -* && -f $1 ]]; then
	filename_substitution $1
	set_working_directory
else
	while getopts ":ho:s:c:C:b:v:e:f:t:T:x:n:N:" OPT
	do
	case ${OPT} in
		b)
			toggle_bibtex
			;;
		t)
			TRANSLATE="true"
			TARGET_LANGUAGE=${OPTARG}
			;;
		T)
			get_template ${OPTARG}
			TEMPLATE="true"
			;;
		c)
			edit_copy
			;;
		C)
			edit_copy_in_new_dir
			;;

		f)
			filename_substitution ${OPTARG}
			set_working_directory
			;;
		o)
			toggle_sway
			;;
		h)
			usage
			;;
		s)
			toggle_synctex
			;;
		v)
			export VIEWER=${OPTARG}
			;;
		e)
			set_editor
			;;
		x)
			filename_substitution ${OPTARG}
			set_xvars
			;;
		n)
			NEWNAME=${OPTARG}
			RENAME="true"
			;;
		N)
			NEWNAME=${OPTARG}
			REDIR="true"
			;;
		*)
			usage
			;;
	esac
	done
fi

if [[ -z "${FILE+x}" ]]; then
	usage
elif [[ -z "${VIEWER+x}" ]]; then
	usage
elif [[ -z "${EDITOR_COMMAND+x}" ]]; then
	usage
else
	if [[ ${SYNCTEX} == "true" && ${EDITOR} == "gedit" ]]; then
        	SYNC_GEDIT="-s"
		set_syncvars
	elif [[ ${SYNCTEX} == "true" ]]; then
		set_syncvars
	fi
	if [[ ${SWAY} == "true" ]]; then
		swaymsg splitv
	fi
	if [[ ${RENAME} == "true" ]]; then
		rename ${NEWNAME}
	fi
	if [[ ${REDIR} == "true" ]]; then
		redir ${NEWNAME}
	fi
	startedit
	if [[ ${SWAY} == "true" ]]; then
		swayorder &
	else
		true
	fi
	if [[ "${TRANSLATE}" == "true" ]]; then
		translate &
	fi
	if [[ "${BIBTEX}" == "true" ]]; then
		glartex_bib
	else
		glartex_nobib
	fi
	echo -e "\v\tYou are using glartex version ${VERSION}\n\v\tsynctex:\t${SYNCTEX}\n\tbibtex: \t${BIBTEX}\n\tswaymode:\t${SWAY}"
	if [[ "${TRANSLATE}" == "true" ]]; then echo -e "\tTranslation target language: ${TARGET_LANGUAGE}"
	fi
fi

wait