#!/bin/sh

# Configs
BINTARGETFILE="/usr/local/bin/helpim"
SHARETARGETPATH="/usr/local/share/HelpIM"
CONFTARGETPATH="/etc/HelpIM"
LOGPATH="/var/log/HelpIM"
HELPIMUSER="helpim"
HELPIMGROUP="helpim"
WWWUSER="www-data"
ADMINGROUP="adm"

# Do these automaticly change them if needed
SCRIPTTARGETPATH=`python -c "import sys; [(a[:11] == '/usr/local/' and a[-14:] == '/site-packages' and sys.stdout.write(a+'\n')) for a in sys.path]"`
SOURCEPATH=`dirname "$0"`

# copy python scripts and compile them
echo "Copying python scripts to $SCRIPTTARGETPATH"
if ! cp -r "$SOURCEPATH/HelpIM" "$SCRIPTTARGETPATH"; then
  echo "Error while copying python scripts, aborting"
  exit 1
fi
if ! chmod 755 "$SCRIPTTARGETPATH/HelpIM/bot/bot.py"; then
  echo "Error while setting rights on $SCRIPTTARGETPATH/HelpIM/bot/bot.py, aborting"
  exit 1
fi
echo "Precompiling $SCRIPTTARGETPATH/HelpIM"
if ! python -c "import compileall; compileall.compile_dir('$SCRIPTTARGETPATH/HelpIM', force=True, quiet=True)"; then
  echo "Error while compiling, aborting"
  exit 1
fi

# htdocs to share
echo "Copying resources to $SHARETARGETPATH"
if [ ! -d "$SHARETARGETPATH" ]; then
  if ! mkdir "$SHARETARGETPATH"; then
    echo "Can't find or create $SHARETARGETPATH, aborting"
    exit 1
  fi
fi
if ! cp -r "$SOURCEPATH/htdocs" "$SHARETARGETPATH"; then
  echo "Error while copying resources to $SHARETARGETPATH/htdocs, aborting"
  exit 1
fi

# make user helpim
if [ -z `id -un $HELPIMUSER` ]; then
  echo "Creating helpim user: $HELPIMUSER (group: $HELPIMGROUP)"
  addgroup --system $HELPIMGROUP
  adduser --system --ingroup $HELPIMGROUP --no-create-home --disabled-password $HELPIMUSER
  # make apache member of helpim group
  if ! usermod -a -G $HELPIMGROUP $WWWUSER; then
    echo "Error while adding $WWWUSER to $HELPIMGROUP, aborting"
    exit 1
  fi
fi

# config to /etc
if [ ! -d "$CONFTARGETPATH" ]; then
  echo "Creating configs in $CONFTARGETPATH"
  if ! mkdir "$CONFTARGETPATH"; then
    echo "Can't find or create $CONFTARGETPATH, aborting"
    exit 1
  fi
  if ! cp "$SOURCEPATH/config/config.xml" "$CONFTARGETPATH"; then
    echo "Error while copying config to $CONFTARGETPATH/htdocs, aborting"
    exit 1
  fi
  if ! cp -r "$SOURCEPATH/config/sites" "$CONFTARGETPATH"; then
    echo "Can not create $CONFTARGETPATH/sites, aborting"
    exit 1
  fi
  # set rights to /etc/HelpIM/sites strict: the db passwords are in there
  if ! chmod 750 "$CONFTARGETPATH/sites"; then
    echo "Can not set rights of $CONFTARGETPATH/sites, aborting"
    exit 1
  fi
  if ! chmod 640 "$CONFTARGETPATH/sites/localhost.xml"; then
    echo "Can not set rights of $CONFTARGETPATH/sites/localhost.xml, aborting"
    exit 1
  fi
  if ! chown -R root:$HELPIMGROUP "$CONFTARGETPATH/sites"; then
    echo "Can not change ownership if $CONFTARGETPATH/sites, aborting"
    exit 1
  fi
fi

# make /var/log/HelpIM
if [ ! -d "$LOGPATH" ]; then
  echo "Creating $LOGPATH"
  if ! mkdir "$LOGPATH"; then
    echo "Can't find or create $LOGPATH, aborting"
    exit 1
  fi
  if ! chown $HELPIMUSER:$ADMINGROUP "$LOGPATH"; then
    echo "Can not change ownership if $LOGPATH, aborting"
    exit 1
  fi
fi

# make /usr/local/bin/helpim/HelpIM/bot/bot.py executable
if ! chmod +x "$SCRIPTTARGETPATH/HelpIM/bot/bot.py"; then
  echo "Error while making $SCRIPTTARGETPATH/HelpIM/bot/bot.py executable"
  exit 1
fi

# link /usr/local/bin/helpim to HelpIM/bot/bot.py
if [ ! -f "$BINTARGETFILE" ]; then
  if ! ln -s "$SCRIPTTARGETPATH/HelpIM/bot/bot.py" "$BINTARGETFILE"; then
    echo "Error while linking $BINTARGETFILE, aborting"
    exit 1
  fi
fi

# startup script naar /etc/init.d/
if [ ! -f "/etc/init.d/helpim" ]; then
  if ! cp "$SOURCEPATH/helpim_init.d" "/etc/init.d/helpim"; then
    echo "Error while creating, /etc/init.d/helpim, aborting"
    exit 1
  fi
  update-rc.d helpim defaults 85 05
fi