#!/bin/bash

TEMPLATE_FILE="$(dirname $0)/verify-script.template"

read -p "Enter message to sign for the file: " MESSAGE
MESSAGE="$MESSAGE\n"
#echo "message: $MESSAGE"

FILE_NAME="$(basename $1)"
#echo "file name: $FILE_NAME"
FILE_HASH="$(sha256sum $FILE_NAME | awk '{print $1}')"
#echo "file hash: $FILE_HASH"

SUBSTITUTED_TEMPLATE=$(sed -e "s!{message}!$MESSAGE!g" -e "s!{filename}!$FILE_NAME!g" -e "s!{filehash}!$FILE_HASH!g" $TEMPLATE_FILE)

#echo "substituted: $SUBSTITUTED_TEMPLATE"
printf "$SUBSTITUTED_TEMPLATE" > "$1.sh"