#!/bin/bash

NAME=$1
shift
for PAR in $*; do eval "$PAR=1" &>/dev/null; done

if [ "$NAME" == "" ]; then
    echo "Usage: $0 <packagename> [info] [confirm]"
    echo " Checks if the package is still up to date with upstream versions. Uses the .check file to do this"
    echo " Add 'info' for more info."
    echo " Add 'confirm' to confirm changes."
    exit 1
fi

CHECK=`./findbuild $NAME`.check || exit 1
OK="$CHECK.ok"
CURRENT=/tmp/$$.check.current

if ! [ -e "$CHECK" ]; then
    echo "(not checking version of $0, no .check file found)"
    exit 0
fi

trap "rm $CURRENT" 0

echo -n "Running $CHECK..."
chmod +X $CHECK || exit 1
if ! $CHECK > $CURRENT; then
    echo "ERROR: Check script returned error code, please verify the script and urls!"
    exit 1
fi


if [ "$info" ]; then
    echo "Output:"
    cat "$CURRENT"
    if [ -e "$OK" ]; then
        echo "Difference with previous check:"
        diff "$OK" "$CURRENT"
    else
	echo "(No previous check data is avaiable yet)"
    fi
fi

if ! cmp  "$OK" "$CURRENT" &>/dev/null; then
    if [ "$confirm" ]; then
	echo -n "confirming changes..."
        cp $CURRENT $OK || exit 1
	echo "OK"
    else
	echo -e "\e[1;31m*** Warning, upstream version changed! Run '$0 $NAME info' for more info.\e[0m"
	exit 1
    fi
else
    echo "OK"
fi