#!/bin/bash -x

# Script to verify hint format and to submit it via local mail command.
# Needs checkHint script available from the Hints website.
# 
# Script depends on the presences of the following executables that
# are not included in a standard LFS installation.
#   mail
#   which
#
# Script created by Jim Gifford
# Based on script by Oliver Pérès
# Modified by Tushar Teredesai

## Configuration params
# Your name
submitter=""
# Your e-mail address
email=""
# Whether to submit the hint
SUBMIT_HINT="disabled"
# Whether to compress hint before submission
COMPRESS="disabled"
# Hints submission address
hints="hints@linuxfromscratch.org"
# Mail program to use
mailprog="mail"
compressprog="bzip2"
compressext="bz2"

# Sanity checks
HINT_FILE="$1"
if [ "$HINT_FILE" == "" ]
then
	echo "`basename $0` hint-file"
	exit 1
fi
if [ "$submitter" = "" ] || [ "$email" = "" ]
then
	echo "Please edit $0 before executing"
	exit 1
fi

MAIL_FILE="`mktemp`"
mailbin="`which $mailprog 2>/dev/null`"
compressbin="`which $compressprog 2>/dev/null`"

ERROR=""

# Subroutines
#
YESNO ()
{
	INPUT="$1"
	echo -n "$INPUT -=>"
	RETURN="0"
	read input
	if [ "$input" == "YES" ] || [ "$input" == "yes" ] || [ "$input" == "Y" ] || [ "$input" == "y" ] 
		then
			OK="YES"
			RETURN="1"
	fi
	if [ "$input" == "NO" ] || [ "$input" == "no" ] || [ "$input" == "N" ] || [ "$input" == "n" ]
		then
			OK="NO"
			RETURN="1"
	fi
	if [ "$RETURN" == "0" ]
		then
			YESNO "$INPUT"
	fi
}

checkHint $HINT_FILE || ERROR="true"

if [ "$ERROR" == "" ] && [ "$SUBMIT_HINT" == "enabled" ] && [ "$mailbin" != "" ]
then
	YESNO "Are you sure you want to send $HINT_FILE to $hints (yes/no)"
	if [ "$OK" == "YES" ]
	then
		if [ "$COMPRESS" == "enabled" ] && [ "$compressbin" != "" ]
		then
			echo "Compressing $HINT_FILE..."
			$compressbin $HINT_FILE
			attachment="$HINT_FILE.$compressext"
		else
			attachment="$HINT_FILE"
		fi
		echo "Hint Submission: $HINT_FILE" > $MAIL_FILE
		echo "Sending email to $hints..."
		$mailbin -B -s "Hint Submission for $HINT_FILE" -a $attachment -r $email $hints < $MAIL_FILE
	fi
fi
rm -f $MAIL_FILE