#!/bin/sh

######################################################################
# @author       : swytch (adapted from Luke Smith - lukesmith.xyz)
# @file         : compiler
# @license      : GPLv3
# @created      : Wednesday May 20, 2020 18:00:51 CEST
#
# @description  : compile or run another finishing operation on a file
#                      groff-mom : compile via pdfmom to a pdf document
#                      c : compile via gcc
#                      config.def.h (suckless) recompile, install
#                      tex : compile via pdflatex (bibtex if needed)
######################################################################


file=$(readlink -f "$1")
dir=$(dirname "$file")
dirname=$(basename "$dir")
base="$(printf "${file%.*}" | awk -F '/' '{printf $NF}')"
shebang=$(sed -n 1p "$file")

sucklesstools="$(ls $XDG_CONFIG_HOME/suckless)"

cd "$dir" || exit

shebangtest()
{
	case "$shebang" in
		\#\!*) "$file" ;;
	esac
}

texcompile() { \
	bibliography="$(grep '\\bibliography' "$file")"
	if [ -n "$bibliography" ]; then
		pdflatex --output-directory="$dir" "$base" &&
		bibtex "$base" &&
		pdflatex --output-directory="$dir" "$base" &&
		pdflatex --output-directory="$dir" "$base"
	else
		pdflatex --output-directory="$dir" "$base" &&
		pdflatex --output-directory="$dir" "$base"
	fi
}

s_build(){
	case "$file" in
		*config.def.h) sudo make clean install ;;
		*config.h) printf "\nYou should build from config.def.h !" && exit 1 ;;
		*) printf "\nI guess you lost yourself ? Please build from config.def.h !" && exit 1 ;;
	esac
}

for tool in $sucklesstools; do
	if [ "$tool" = "$dirname" ]; then
		s_build
		exit 0
	fi
done

case "$file" in
	*.c*|.h*) make && ./main ;;
	*.mom) refer -PS -e "$file" | pdfmom > "$base.pdf" ;;
	*.tex) texcompile "$base" ; texclear "$file" ;;
	*.py) python "$file" ;;
	*) shebangtest ;;
esac