#! /bin/sh
# Generic installation script for Ponscripter games.
#
# Copyright (C) 2009 Haeleth.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS I THE SOFTWARE.


# Game-specific variables:

GAME=narcissu2            # Name of game (used to name directory and launcher)
TITLE="Narcissu Side 2nd" # Pretty name of game
GAMEID=Narcissu_Side_2nd  # ;gameid after Unix transformation
GAMEVER=1.00              # Version number of game
COPYRIGHT="Copyright (c) 2005-2007 Stage-Nana, 2005-2009 Insani/Haeleth/Agilis"
NEEDVER=20090104          # Minimum version of Ponscripter required


# The remainder of this file should not need customisation.

# Default options
PREFIX=/usr/local
PONSCR=

# Parse options
prev=
for opt
do
  if test -n "$prev"; then
    eval "$prev=\$opt"
    prev=
    continue
  fi
  arg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
  case $opt in
      --prefix=* | -prefix=*)
        PREFIX=$arg ;;
      --prefix | -prefix)
        prev=PREFIX
        ;;

      --ponscr=* | -ponscr=*)
        PONSCR=$arg ;;
      --ponscr | -ponscr)
        prev=PONSCR
        ;;
      
    -\? | -h* | --h*)
      cat <<EOF
Usage: $0 <options>

Options:
  --help           display this message
  --prefix=DIR     install in prefix DIR (default is /usr/local)
  --ponscr=PATH    specify location of ponscr program

EOF
      exit 0
      ;;
    *)
      echo "Ignoring unknown option $opt"
      ;;
  esac
done
if test -n "$prev"; then
  opt=--`echo $prev | tr '[A-Z]_' '[a-z]-'`
  echo "Error: missing argument to $opt" >&2
  exit 2
fi


# ---------- Check environment ----------

# permission to write to PREFIX

if test ! -w "$PREFIX"; then
    cat <<EOF
Error: cannot write to $PREFIX.
Please either try again as root, or use --prefix.

See INSTALL for further assistance.

EOF
    exit 1
fi

# existence of ponscr program
if test -z "$PONSCR"; then
    PONSCR=`which ponscr 2>/dev/null`
fi
if test -z "$PONSCR"; then
    PONSCR=ponscr
fi
PSCVER=`($PONSCR --version) 2>/dev/null | awk '/version/ { print $3 }'`
if test -z "$PSCVER"; then
    cat <<EOF
Error: Ponscripter not found.  Please install it and try again.

If you have already installed it, I can't seem to find it; please
specify the path to the ponscr binary with the --ponscr option.

See INSTALL for further assistance.

EOF
    exit 1
fi
if test $PSCVER -lt $NEEDVER; then
    cat <<EOF
Error: found Ponscripter $PSCVER, but I need version $NEEDVER or later.
Please upgrade and try again.

If you have already installed the latest version, you may have an older
version in your PATH that's getting in the way; try specifying the path
to the correct version with the --ponscr option.

See INSTALL for further assistance.

EOF
fi

# existence of previous installation
if [ -d $PREFIX/share/games/$GAME ]; then
    echo "It looks like you've already got $TITLE installed."
    echo "Continuing will overwrite the existing installation."
    if read -p "Are you sure? " CONFIRM; then :; else
        echo
        exit 1
    fi
    case `echo $CONFIRM | tr YES yes` in
        yes | y) : ;;
        no | n) exit 0 ;;
        *) cat <<EOF
I'm afraid I don't understand that answer.
If you meant "yes", please run the installer again and say yes.

Alternatively, you could uninstall the previous version (probably a
case of typing "$GAME --uninstall"), and the problem would go away.

EOF
           exit 1 ;;
    esac
fi

# ---------- Installation ----------

cat <<EOF
Installing $TITLE...

EOF

INSTALL=util/install-sh
RMMAN=

# Game files are straightforward to install.
$INSTALL -d $PREFIX/share/games/$GAME
for file in data/*; do
    FILE=`expr "x$file" : 'x.*/\(.*\)'`
    echo $PREFIX/share/games/$GAME/$FILE
    $INSTALL -c -m 0644 $file $PREFIX/share/games/$GAME
done

# Manpages are slightly more complicated.
if [ ! -d $PREFIX/man ] && [ -d $PREFIX/share/man ]
then MANDIR=$PREFIX/share/man
else MANDIR=$PREFIX/man
fi
$INSTALL -d $MANDIR/man6
for file in man/*; do
    FILE=`expr "x$file" : 'x.*/\(.*\)'`
    echo $MANDIR/man6/$FILE
    RMMAN="$RMMAN $MANDIR/man6/$FILE"
    $INSTALL -c -m 0644 $file $MANDIR/man6
done
if [ ! -z "$RMMAN" ]; then
    RMMAN="rm -f$RMMAN"
fi

# And the game launcher script must be created from scratch.
TMPSCR=/tmp/tmp-$GAME.$$
trap "rm $TMPSCR 2>/dev/null" 0

cat > $TMPSCR <<EOF
#! /bin/sh
# Launcher script for the Ponscripter game "$TITLE"
#
# Copyright (C) 2009 Haeleth.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

case \`echo 'x\c'\` in
'x\c') echo_n="echo -n"; nobr= ;;
*)     echo_n="echo";    nobr="\c" ;;
esac

PLAY=true
WINDOW=
SAVE=
DEBUG=

# Parse options
prev=
for opt
do
  if test -n "\$prev"; then
    eval "\$prev=\\\$opt"
    prev=
    continue
  fi
  arg=\`expr "x\$opt" : 'x[^=]*=\\(.*\\)'\`
  case \$opt in
    --uninstall | -uninstall)
      PLAY=false ;;

    --window | -window)
      WINDOW=--window ;;

    --fullscreen | -fullscreen)
      WINDOW=--fullscreen ;;

    --save=* | -save=*)
      SAVE=\$arg ;;
    --save | -save)
      prev=SAVE ;;

    --debug | -debug | -d)
      DEBUG="\$DEBUG -d" ;;

    --version | -version | -v)
      echo "$TITLE version $GAMEVER"
      echo "$COPYRIGHT"
      echo
      \$echo_n "Game engine: \$nobr"
      $PONSCR --version
      exit 0;;

    -\\? | -h* | --h*)
      cat <<ENDHELP
$TITLE launcher
Usage: $GAME <options>

Options:
    --debug     -d    enable debugging output (very verbose!)
    --window          start in windowed mode
    --fullscreen      start in fullscreen mode
    --save DIR        put saves and settings in DIR
                      (default: \$HOME/.$GAMEID)
Information:
    --help      -h    display this message
    --version   -v    display version and copyright information

Administration:
    --uninstall       uninstall $TITLE

ENDHELP
      exit 0
      ;;
    *)
      echo "Ignoring unknown option \$opt"
      ;;
  esac
done
if test -n "\$prev"; then
  opt=--\`echo \$prev | tr '[A-Z]_' '[a-z]-'\`
  echo "Error: missing argument to \$opt" >&2
  exit 2
fi

if \$PLAY; then
    if [ ! -z "\$SAVE" ]; then SAVE="--save \$SAVE"; fi
    exec $PONSCR \\
         -r $PREFIX/share/games/$GAME \\
         \$WINDOW \$SAVE \$DEBUG
fi

if test ! -w $PREFIX/share/games; then
    cat <<ENDERR
Cannot uninstall: you don't have the necessary privileges.
Please try again as root.
ENDERR
    exit 1
fi

if read -p "Really uninstall $TITLE? " CONFIRM; then :; else
    echo
    exit 1
fi
case \`echo \$CONFIRM | tr YES yes\` in
  yes | y) : ;;
  *) exit 0 ;;
esac

rm -rf $PREFIX/share/games/$GAME
rm -f $PREFIX/bin/$GAME
$RMMAN

echo $TITLE has been uninstalled.
if test -d \$HOME/.$GAMEID; then
    cat <<NOTE

Your saved games have not been removed.  You can delete them manually
with the command

  rm -rf \$HOME/.$GAMEID

NOTE
fi
EOF

echo $PREFIX/bin/$GAME
$INSTALL -c $TMPSCR $PREFIX/bin/$GAME
echo
echo Installation complete.

# Different message depending on whether the launcher is in $PATH or
# not.
BIN=$PREFIX/bin
case $PATH in
  $BIN | $BIN:* | *:$BIN | *:$BIN:*)
    cat <<EOF
You can now play the game with the \`$GAME' command.

EOF
    ;;
  *)
    if [ "x`whoami`" = "xroot" ]; then
        cat <<EOF
You can now play the game by typing \`$BIN/$GAME'.
(Or you may be able to run \`$GAME' directly,
if $BIN is in your PATH).

EOF
    else
        cat <<EOF
You can now play the game by typing \`$BIN/$GAME'.
(Or you could run \`$GAME' directly after adding
$BIN to your PATH).

EOF
    fi
esac