#!/bin/sh
# Installation program for binaries.
# By Serge van den Boom, 2002-11-26

quithandler() {
	echo
	echo "Bye."
	trap INT
	kill -INT $$
}

trap quithandler INT

umask 022

cat << EOF
-== The Ur-Quan Masters installation ==-

Hi, I'm your friendly neighbourhood installation program.
I will make you very happy, but first, we've got some business to take
care of.

EOF

PAGER="${PAGER:-more}"
type "$PAGER" > /dev/null 2>&1
if [ "$?" -ne 0 ]; then
	cat << EOF
I can't find a good pager. I need one. Sorry. Here's your prompt back.
EOF
	exit 1
fi

type unzip > /dev/null 2>&1
if [ "$?" -ne 0 ]; then
	cat << EOF
I need 'unzip' for unzipping things. You don't seem to have it.
That means no unzipping for me. And no The Ur-Quan Masters for you.
And that's really not acceptable, is it? So I hope you'll install it
soon. That way we'll both be happy.
EOF
	exit 1
fi

echo "I need to show you something. I don't want to, but I have to."
echo "Press enter when you're ready."
read TEMP

$PAGER << "EOF"
@LICENCE@
EOF
echo "That's hard reading, isn't it? But it's pretty important stuff. "
echo -n "Now, the big question is, do you agree to it? "
while :; do
	read TEMP
	case "$TEMP" in
		[yY][eE][sS]|[aA][gG][rR][eE][eE])
			echo "Good. Now we can be friends."
			break
			;;
		[nN][oO])
			cat << EOF
No? You're sure you didn't mean 'yes'? You do realise I can't let you pass
now? Oh well, come back if you change your mind. I'm not going anywhere.
I AM not going anywere, right?
EOF
			exit 0
			;;
		*)
			echo -n "Hmm... Please type 'Yes' or 'No': "
			;;
	esac
done
echo

cat << EOF
Now I need somewhere to put all those Ur-Quan Masters files.
My invisible friend tells me $INPUT_install_prefix_DEFAULT is a good place.
I would put an executable there in a bin/ dir and a lot of junk together
in a subdir under share/ and a little bit in a subdir under lib/
But you're the boss, so where shall I put them?"
EOF
while :; do
	show_install_prefix_menu
	echo

	PREFIX="$INPUT_install_prefix_VALUE"
	if [ "$PREFIX" = "/dev/null" ]; then
		echo "Ok, done. That was quick, wasn't it? Well, have fun."
		echo
		exit 0
	fi

	if [ ! -d "$PREFIX" ]; then
cat << EOF
There's no such directory. If you want me to stuff it all in /dev/null,
just say so. No need to toy with me.
Then again, I could create that directory for you.
EOF
		echo -n "Would you like that? "

		read TEMP2
		echo
		case "$TEMP2" in
			y|Y|yes|Yes|YES)
				mkdir -p "$PREFIX" 2> /dev/null
				if [ "$?" -gt 0 ]; then
					cat << EOF
I cannot do it, captain! I don't have enough power!
Erm... I mean 'permission denied'. Sorry about that.
I guess we'll need to find another place.
EOF
					echo "So what shall it be?"
				else
					cat << EOF
Ok, I've created that dir for you, even though it isn't in my job
description. Now let's get on with the copying.
EOF
					break;
				fi
				;;
			n|N|no|No|NO)
				echo "Great! That saves me some work."
				echo "Then where DO you want me to put my files?"
				echo "I promise I'll handle them with care."
				;;
			*)
				echo "I'll take that as a 'no'."
				echo -n "So, where should I put my files?"
				;;
		esac
		continue
	fi

	if [ ! -w "$PREFIX" ]; then
cat << EOF
Ooh, a very fine place indeed. Unfortunately it's not your fine place.
You can't write there, and for some strange cosmological coincidence,
neither can I. I think we need another place."
EOF
		echo "So, what shall it be?"
		continue
	fi
	break
done
cat << EOF
$PREFIX it is. I can work with that.

EOF

if [ -d "${PREFIX}/share/uqm/content" ]; then
	if [ -f "${PREFIX}/share/uqm/content/version" ]; then
		read UQM_OLDVERSION < "${PREFIX}/share/uqm/content/version"
	else
		UQM_OLDVERSION=0.1
	fi
	if [ `expr "$UQM_VERSION" ">" "$UQM_OLDVERSION"` = "1" ]; then
		# NB: 'expr' echoes '1' for true, while sh uses '0'
		echo "Hey! I see you've got an old version there."
		echo "You'll be happy to know this one is even better."
		echo "(yes, this is a hardcoded string in the installer)"
		echo
		UQM_INSTALL=UPGRADE
	elif [ `expr "$UQM_VERSION" "<" "$UQM_OLDVERSION"` = "1" ]; then
		UQM_INSTALL=DOWNGRADE
	else
		UQM_INSTALL=REINSTALL
	fi
else
	UQM_INSTALL=NEW
fi

check_content_path() {
	local OPTIONAL TITLE HAVE FAIL

	echo "Looking for packages to install..."
	FAIL="0"
	for PACKAGE in $UQM_PACKAGES; do
		eval OPTIONAL="\$UQM_PACKAGE_${PACKAGE}_OPTIONAL"
		eval TITLE="\$UQM_PACKAGE_${PACKAGE}_TITLE"
		package_available "$PACKAGE"
		HAVE="$?"
		echo -n "- Package for '$TITLE'"
		if [ "$OPTIONAL" = TRUE ]; then
			echo -n " (optional)"
		else
			echo -n " (required)"
		fi

		if [ "$HAVE" -eq 0 ]; then
			echo " found."
			continue
		fi
		echo " not found."
		
		if [ "$OPTIONAL" = FALSE ]; then
			FAIL=1
		fi
	done
	return "$FAIL"
}

CONTENT_PATH="$INPUT_content_path_DEFAULT"
check_content_path
if [ "$?" -ne 0 ]; then
	cat << EOF
I haven't found the files I need in the $CONTENT_PATH dir.
I really can't work without them.
If you don't have them, please press CTRL-C and quickly get it, before I get
swapped out.
EOF
	echo "Otherwise, please tell me where you've hidden them."
	while :; do
		show_content_path_menu
		CONTENT_PATH="$INPUT_content_path_VALUE"
		check_content_path && break
		echo "That's not it. Guess again."
	done
	echo "Yay! Found them."
	echo
fi

set_components_menu
show_components_menu

cat << EOF
Ok, I'm ready now to start filling your hard drive.
It might take some time though, so don't hold your breath.
On second thought, DO hold your breath, I like the colour blue.
Orange too, for that matter, but I don't think you can manage that.
EOF
echo -n "Ready? Just say the word. Any word will do: "
read TEMP
echo "A word as good as any."
echo

echo "Making directories..."
mkdir -p -- "$PREFIX"/share/uqm/content 2> /dev/null
mkdir -p -- "$PREFIX"/bin 2> /dev/null

echo "Unpacking packages..."
for PACKAGE in `selected_packages`; do
	echo "- $COMPFILE"
	COMPFILE="$(package_filename $PACKAGE)"
	eval LOCATION="\$UQM_PACKAGE_${PACKAGE}_LOCATION"
	unzip -od "${PREFIX}${LOCATION}" "$COMPFILE"

	# Next line is a workaround, as the content zips have files
	# with the wrong permissions in them. Should be fixed for the
	# next release.
	chmod go+rX "${PREFIX}${LOCATION}"
done


echo "Unpacking other stuff..."
tail -c @ATTACHLEN@ < "$0" | gzip -dc | tar -xf - -C "$PREFIX"

echo "Creating wrapper script..."
cat << EOF > "$PREFIX"bin/uqm
#!/bin/sh
# Wrapper script for starting The Ur-Quan Masters
"${PREFIX}lib/uqm/uqm" "--contentdir=${PREFIX}share/uqm/content" "\$@"
EOF
chmod 755 "$PREFIX"bin/uqm

cat << EOF

All done. Now you can play The Ur-Quan masters.
I told you I was going to make you very happy.
And if you're looking for documentation, you can find some in
${PREFIX}share/uqm/doc/. If you aren't looking for documentation, too.
But feel free to delete them. You know where to find them.
EOF

exit 0