#!/bin/bash

# svn.sh - Made for Puppi

# All variables are exported

set -a 

# Sources common header for Puppi scripts

. $(dirname $0)/header || exit 10

# Show help

showhelp () {

    echo "This script performs the svn operations required by puppi::project::svn"

    echo "It integrates and uses variables provided by other core Puppi scripts"

    echo "It has the following options:"

    echo "-a <action> (Optional) What action to perform. Available options: deploy (default), rollback"

    echo "-s <source> (Required) Subversion source repo to use"

    echo "-d <destination> (Required) Directory where files are deployed"

    echo "-u <user> (Optional) User that performs the deploy operations. Default root"

    echo "-su <user> (Optional) Username for access to private svn repo"

    echo "-sp <password> (Optional) Password for access to private svn repo"

    echo "-gs <svn_subdir> (Optional) If only a specific subdir of the svnrepo has to be copied to the install destination"

    echo "-t <tag> (Optional) Tag to deploy"

    echo "-b <branch> (Optional) Branch to deploy"

    echo "-c <commit> (Optional) Commit to deploy"

    echo "-v <true|false> (Optional) If verbose"

    echo "-k <true|false> (Optional) If .svn dir is kept on deploy_root"

    echo "-e <true|false> (Optional) If use export instead of checkout for svn operations"

    echo 

    echo "Examples:"

    echo "svn.sh -a deploy -s $source -d $deploy_root -u $user -gs $svn_subdir -t $tag -b $branch -c $commit -v $bool_verbose -k $bool_keep_svndata"

}

verbose="true"

# Check Arguments

while [ $# -gt 0 ]; do

  case "$1" in

    -a)

      case $2 in

          rollback)

          action="rollback"

          ;;

          *)

          action="install"

          ;;

      esac 

      shift 2 ;;

    -s)

      if [ $source ] ; then

        source=$source

      else

        source=$2

      fi

      shift 2 ;;

    -d)

      if [ $deploy_root ] ; then

        deploy_root=$deploy_root

      else

        deploy_root=$2

      fi

      shift 2 ;;

    -u)

      if [ $user ] ; then

        deploy_user=$user

      else

        deploy_user=$2

      fi

      shift 2 ;;

    -gs)

      if [ $svn_subdir ] ; then

        svn_subdir=$svn_subdir

      else

        svn_subdir=$2

      fi

      shift 2 ;;

    -su)

      if [ $svn_user ] ; then

        svn_user=$svn_user

      else

        svn_user=$2

      fi

      shift 2 ;;

    -sp)

      if [ $svn_password ] ; then

        svn_password=$svn_password

      else

        svn_password=$2

      fi

      shift 2 ;;

    -t)

      if [ $svn_tag ] ; then

        svn_tag=$svn_tag

      else

        svn_tag=$2

      fi

      shift 2 ;;

    -b)

      if [ $branch ] ; then

        branch=$branch

      else

        branch=$2

      fi

      shift 2 ;;

    -c)

      if [ $commit ] ; then

        commit=$commit

      else

        commit=$2

      fi

      shift 2 ;;

    -v)

      if [ $verbose ] ; then

        verbose=$verbose

      else

        verbose=$2

      fi

      shift 2 ;;

    -k)

      if [ $keep_svndata ] ; then

        keep_svndata=$keep_svndata

      else

        keep_svndata=$2

      fi

      shift 2 ;;

    -e)

      if [ $svn_export ] ; then

        svn_export=$svn_export

      else

        svn_export=$2

      fi

      shift 2 ;;

    *)

      showhelp

      exit ;;

  esac

done

if [ "x$verbose" == "xtrue" ] ; then

  verbosity=""

else

  verbosity="--quiet"

fi

cd /

if [ "x$branch" == "xundefined" ] ; then

  branch="trunk"

fi

real_source="$source/$branch"

if [ "x$svn_tag" != "xundefined" ] ; then

  real_source="$source/$svn_tag"

fi

if [ "x$svn_user" != "xundefined" ] && [ "x$svn_password" != "xundefined" ] ; then

  svn_auth="--username=$svn_user --password=$svn_password"

else

  svn_auth=""

fi

svnsubdir=""

svndir=$deploy_root

do_install () {

  if [ "x$keep_svndata" != "xtrue" ] ; then

    if [ ! -d $archivedir/$project-svn ] ; then

      mkdir $archivedir/$project-svn

      chown -R $user:$user $archivedir/$project-svn

    fi

    svndir=$archivedir/$project-svn/svnrepo

  fi

  if [ "x$svn_subdir" != "xundefined" ] ; then

    if [ ! -d $archivedir/$project-svn ] ; then

      mkdir $archivedir/$project-svn

      chown -R $user:$user $archivedir/$project-svn

    fi

    svndir=$archivedir/$project-svn

    svnsubdir="$svn_subdir/"

  fi

  if [ -d $svndir/.svn ] ; then

    cd $svndir

    svn up $verbosity $svn_auth --non-interactive

  else

    svn co $verbosity $real_source $svndir $svn_auth --non-interactive

    cd $svndir

  fi

  if [ "x$svndir" == "x$archivedir/$project-svn/svnrepo" ] ; then

    rsync -a --exclude=".svn" $svndir/$svnsubdir $deploy_root/

  fi

}

do_export () {

  svn export $verbosity $svn_auth --force --non-interactive $real_source/$svn_subdir $deploy_root

}

do_rollback () {

  echo "Rollback not yet supported"

}

# Action!

case "$action" in

    install) 

      if [ "x$svn_export" == "xtrue" ] ; then

        export -f do_export ; su $user -c do_export

      else

        export -f do_install ; su $user -c do_install

      fi

      ;;

    rollback) do_rollback ;;

esac