#!/bin/bash
#
# mkpmwiki 0.2: cria uma nova instancia do pmwiki
# feedback: rhatto at riseup.net | gpl
#
#  This is free software; you can redistribute it and/or modify it under the
#  terms of the GNU General Public License as published by the Free Software
#  Foundation; either version 2 of the License, or any later version.
#
#  This software is distributed in the hope that it will be useful, but WITHOUT ANY
#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
#  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License along with
#  this program; if not, write to the Free Software Foundation, Inc., 59 Temple
#  Place - Suite 330, Boston, MA 02111-1307, USA
#

#
# section 1: default procedures
# 

TMP="/tmp"
MKSITE_BASE="/etc/mksite"
CONF="$MKSITE_BASE/mksite.conf"
MESSAGES="/usr/share/mksite/mksite.messages"
LOCKFILE="$TMP/mksite.lock"
HELPER_FUNCTIONS="/usr/libexec/mksite/mksite-helper"

# plugin definitions
PLUGIN_NAME="pmwiki"
USE_VERSION="0"
USE_DATABASE="0"

if [ -f "$HELPER_FUNCTIONS" ]; then
  source $HELPER_FUNCTIONS
  mksite_checks
else
  echo Fatal error: function file not found, aborting.
  echo Erro fatal: arquivo de funcoes nao encontrado, abortando.
  exit 1
fi

#
# section 2: plugin specific functions
# 

function usage {

  echo "usage: `basename $0` project [-n wikiname]"

}

function set_folder {

  if [ "$1" == "wiki" ]; then
    echo $HOME/$USER/wiki
  else
    echo $HOME/$USER/wiki/$1
  fi

}

function set_url {

  if [ "$1" != "$DOCROOT" ]; then
    echo $USER.$DOMAIN/$1
  else
    echo $USER.$DOMAIN
  fi

}

function create_config_file {

  # usage: create_config_file <wiki-name>

  local folder url

  folder="`set_folder $1`"
  url="`set_url $1`"

  # write field.php; its important not to close with "?>"

  echo "<?php include(\"$PLUGIN_DIR/pmwiki.php\"); ?>" > $folder/field.php

  echo "<?php if (!defined('PmWiki')) exit();" > $folder/local/config.php
  echo "\$ScriptUrl = \"$url\";" >> $folder/local/config.php
  echo "\$EnablePathInfo = 1;" >> $folder/local/config.php
  echo "?>" >> $folder/local/config.php

  echo "Order Deny,Allow" > $folder/local/.htaccess
  echo "Deny from all" >> $folder/local/.htaccess

  echo "Options +FollowSymLinks " > $folder/.htaccess
  echo "RewriteEngine on" >> $folder/.htaccess
  echo "RewriteRule ^/?$ $url/Main/HomePage [R=permanent,QSA,L]" >> $folder/.htaccess
  echo "RewriteRule ^([^/a-z].*) field.php?n=\$1 [QSA,L]" >> $folder/.htaccess

  ( cd $folder && ln -s field.php index.php )

  chown $APACHE_USER.$APACHE_GROUP $folder
  chown $APACHE_USER.$USER $folder/local/config.php
  chmod 460 $folder/local/config.php

}

function update_config {

  # update the configurations of each wiki instance installed for $USER

  local wiki folder url

  for wiki in `mksite_eval_param $MKSITE_BASE/sites/$USER $PLUGIN_NAME_UPPER`; do

    folder="`set_folder $wiki`"
    url="`set_url $wiki`"

    # TODO: check regexp
    # adjust .htaccess
    sed -e '/RewriteRule \^\/\?\$/d' $folder/.htaccess > $folder/.htaccess.tmp
    echo "RewriteRule ^/?$ $url/Main/HomePage [R=permanent,QSA,L]" >> $folder/.htaccess.tmp
    mv $folder/.htaccess.tmp $folder/.htaccess

    # TODO: check regexp
    # adjust settings.php
    sed -e '/\$ScriptUrl = /d' $folder/local/config.php > $folder/local/config.php.tmp
    echo "\$ScriptUrl = \"$url\";" >> $folder/local/config.php.tmp
    mv $folder/local/config.php.tmp $folder/local/config.php

  done

}

function write_config_file {

  # salva as alteracoes no arquivo de configuracao do sitio

  local tmpfile wiki
  tmpfile="$TMP/$USER-conf.tmp"
  wiki="`mksite_eval_param $MKSITE_BASE/sites/$USER $PLUGIN_NAME_UPPER | sed -e "s/$INSTANCE_NAME//g" -e 's/  //g'`"
  echo "$PLUGIN_NAME_UPPER=\"$wiki $INSTANCE_NAME\"" >> $tmpfile
  mv $tmpfile $MKSITE_BASE/sites/$USER
  mksite_write_config_file

}

function check_instance_installed {

  # check if the instance is installed
  # should return INSTALLED="installed" if its installed :P

  local folder

  # wikis sao instaladados em $HOME/$USER/wiki/
  folder="`set_folder $INSTANCE_NAME`"

  # check if the instance is installed

  if [ -f "$folder/settings.php" ]; then
    INSTALLED="installed"
  fi

}

function create_folders {

  # cria a pasta

  local folder

  folder="`set_folder $INSTANCE_NAME`"
  mkdir -p $folder/local
  if [ "$INSTANCE_NAME" == "wiki" ]; then
    # symlink so it can be reached via http://wiki.project.org/$USER
    ln -s $folder $PLUGIN_DIR/$USER
  fi

}

function create_contrib_folders {

  local folder

  folder="`set_folder $INSTANCE_NAME`"

  ( cd $folder && ln -s field.php index.php )
  # TODO: $USER como dono de $folder, $APACHE_USER.$APACHE_GROUP soh onde for necessario
  chown $APACHE_USER.$APACHE_GROUP $folder

}

#
# section 3: main procedure
#

mksite_init $*