#!/bin/sh

#
# This is the common GePhex wrapper script.
# It checks wether GePhex is started for the first time.
# If so, it creates the config file and copies the examples.
#
# Don't call it directly! Instead, call gephex-engine or
# gephex-gui. These are symlinks to this file.
#
# TODO: better error handling
# Note: the prefix variable is replaced at configure time

HOME_DIR=$HOME
CONF_DIR_BASE=$HOME_DIR/.gephex
CONF_DIR=$CONF_DIR_BASE/0.4
DATA_PATH=@prefix@/share/gephex/

if [ ! -e $CONF_DIR_BASE ]; then
    echo "You started gephex for the first time!"

    echo "Creating $CONF_DIR..."
    mkdir $CONF_DIR_BASE
    mkdir $CONF_DIR
    mkdir $CONF_DIR/graphs

    echo "Copying and adapting default config file..."
    cat $DATA_PATH/gephex.conf.default | sed s:__CONF_DIR__:$CONF_DIR:g | sed s:__HOME_DIR__:$HOME_DIR:g > $CONF_DIR/gephex.conf

    echo "Copying example graphs..."
    GRAPHS="example1 example2 example3 noise fzcam4"
    for i in $GRAPHS; do cp $DATA_PATH/graphs/$i $CONF_DIR/graphs; done

    echo "...done!"
    echo "Everything is set up."
    echo "Starting GePhex, have fun."
else
    # ~/.gephex already exists
    # move to ~/.gephex/0.4/ if necessary (before version 0.4.1)
    # also adapt gephex.conf, because module_path, type_path and
    # graph_path have changed in 0.4.1
    if [ ! -e $CONF_DIR ]; then
      echo "Moving old configuration data from '$CONF_DIR_BASE'"
      echo "to new location '$CONF_DIR'"

      mkdir $CONF_DIR

      mv $CONF_DIR_BASE/graphs $CONF_DIR

      if [ -e $CONF_DIR_BASE/run_in_terminal.sh ]; then
        mv $CONF_DIR_BASE/run_in_terminal.sh $CONF_DIR
      fi

      # adapt the graph_path to new location
      sed 's|[.]gephex/graphs|.gephex/0.4/graphs|' $CONF_DIR_BASE/gephex.conf > $CONF_DIR/gephex.conf

      # adapt module path
      sed 's|lib/gephex/modules|lib/gephex-0.4/modules|' $CONF_DIR/gephex.conf > $CONF_DIR/gephex.conf.tmp

      # adapt type path
      sed 's|lib/gephex/types|lib/gephex-0.4/types|' $CONF_DIR/gephex.conf.tmp > $CONF_DIR/gephex.conf

      rm $CONF_DIR_BASE/gephex.conf
      rm $CONF_DIR/gephex.conf.tmp
    fi   
fi

if [ ! -e $CONF_DIR/run_in_terminal.sh ]; then
    echo "$CONF_DIR/run_in_terminal.sh does not exist, copying default one..."
    cp $DATA_PATH/run_in_terminal.sh $CONF_DIR/
    chmod ug+x $CONF_DIR/run_in_terminal.sh
    echo "...done!"
fi

# determine which symlink was called
test_engine=`echo $0 | grep gephex-engine`
test_gui=`echo $0 | grep gephex-gui`
test_gephex=`echo $0 | grep gephex`

if test "x$test_engine" != "x"; then
    @prefix@/bin/gephex-engine-real $*
elif test "x$test_gui" != "x"; then
    @prefix@/bin/gephex-gui-real $*
elif test "x$test_gephex" != "x"; then
    $CONF_DIR/run_in_terminal.sh @prefix@/bin/gephex-engine-real &
    sleep 2
    @prefix@/bin/gephex-gui-real
else
    echo "Please don't call this script directly."
    echo "Use the symlinks gephex-engine and gephex-gui, so I know"
    echo "what to do."
fi