#!/bin/sh

source "$(dirname "$0")/functions.sh"

swipeToQuery(){
	swipe=$(echo "$1" | tr -d ".\*\"\\^$\(\)")
	printf '^'
	printf "${swipe:0:2}"
	if test "${swipe:2}"; then
		printf "${swipe:2}" |grep -o . | xargs -I{} printf '\?%s' "{}"
	fi
	printf '$'
}

query(){
	swipe="$2"
	wordlist="$1"
	wordfile="$wordlist"
	if test -d "$wordlist"; then
		wordfile=/dev/null
		fl=$(firstLetter "$swipe")
		ll=$(lastLetter "$swipe")
		test -f "$wordlist/$fl$ll" && wordfile="$wordlist/$fl$ll"
	fi

	query=$(swipeToQuery "$swipe")
	echo "query: $query" > /dev/stderr
	# -m 1: just give first result
	grep -m 1 "$query" "$wordfile"
}

while read -r line; do
	test "$line" && query "$1" "$line" && printf '\n'
done