#!/bin/bash
# TODO: Find some way to target specific lines without messy grep shit

##########
# Values #
##########

CONFDIR="$HOME/.config/tore/"
TOREAD="$CONFDIR/toread.txt"
READED="$CONFDIR/readed.txt"
optstring=a:d:r:s:f:hlmec

#############
# Functions #
#############

display_usage() {
cat <<-EndHelp
	Usage: tore [-a] [-d] [-r] [-s] [-f] [ARG] [-h] [-l] [-c] [-m(a|d|r|s|l|c|e)] [-e]

	Actions:
	  -a "[TITLE] - [AUTHOR]"
	  -d [KEYWORD]
	  -r "KEYWORD, VALUE"
	  -s [KEYWORD]
	  -f [KEYWORD] (Cannot use with -m)
	  -l Display entires
	  -c Random output to decide what to read next
	  -h Display help
	  -m Modify readed.txt instead of toread.txt. MUST BE FIRST TO WORK!
	  -e Edit file directly"

EndHelp
exit 0
}

add_entry() {
echo "$OPTARG" >> "$TOREAD" && exit 0
}

remove_entry() {
sed -i "/$OPTARG/Id" "$TOREAD"
}

move_entry() {
grep "$OPTARG" "$TOREAD" >> "$READED" &&
sed -i "/$OPTARG/Id" "$TOREAD"
}

refresh_entry() {
sed -i "$(grep -i -n "$( printf "%s" "$OPTARG" | cut -d "," -f 1)" "$TOREAD" | cut -d : -f 1)s/[,].*//g" "$TOREAD" &&

grep -i -n "$( printf "%s" "$OPTARG" | cut -d "," -f 1)" "$TOREAD" | cut -d : -f 1 |
	while read -r num; do
		sed -i ""$num"s/$/,$(printf "$OPTARG" | cut -d "," -f 2)/" "$TOREAD"
	done
}

search_entry() {
grep -i "$OPTARG" "$TOREAD"
}

list_entries() {
printf "\e[31m%s\n\e[39m" "$(grep -E '[0-9]' "$TOREAD")";
printf "\e[34m%s\n\e[39m" "$(grep -Ev '[0-9]' "$TOREAD")"
}

modify() {
export TOREAD=$READED
}

edit() {
vim "$TOREAD"
}

choose_entry() {
shuf -n 1 "$TOREAD"
}

###########
# Options #
###########

while getopts $optstring opt
do
	case "$opt" in
	a)
		add_entry
		;;
	d)
		remove_entry
		;;
	r)
		refresh_entry
		;;
	s)
		search_entry
		;;
	h)
		display_usage
		;;
	l)
		list_entries
		;;
	c)
		choose_entry
		;;
	f)
		move_entry
		;;
	\?)
		display_usage
		;;
	m)
		modify
		;;
	e)
		edit
		;;
	esac
done