#!/bin/bash

# Author: Johannes Ranke <jranke@uni-bremen.de>

# Script to automate backporting for CRAN
# Make sure the R version in ./backport is correctly set

# Creates a source package and binary packages for the following architecture
ARCH=i386
export ARCH

usage()
{
echo "Usage: ./backport_others [options] stretch|jessie"
echo "Options:"
echo " -s     Skip apt-get update/upgrade and pbuilder update"
}

# Loop over options
skip=false
while test -n "${1}"; do
  case "$1" in
    -s | --skip)
      skip=true
      shift
      ;;
    -*)
      echo "Error: Unknown option: $1" >&2
      usage
      exit 1
      ;;
    *) # No more options
      break
      ;;
  esac
done

# Positional arguments
if [ $# -lt 1 ]; then usage; exit 1; fi
DIST=$1

# Update apt and pbuild chroot 
if [ "$skip" = false ]
then
  sudo apt-get update
  sudo apt-get upgrade
  sudo -E pbuilder update \
      --distribution $DIST \
      --basetgz /var/cache/pbuilder/$DIST-$ARCH-base.tgz \
      --aptcache /var/cache/pbuilder/$DIST-$ARCH/aptcache 
fi

# Validate distribution argument
if [ $DIST != "stretch" ] && [ $DIST != "jessie" ]; then usage; exit 1; fi
export DIST

# When doing a new repository, lattice, r-cran-mass and survival have to be
# built first, then nlme and rmatrix, then the rest

# Packages to backport (without rpy2):
for i in lattice nlme rmatrix mgcv boot cluster codetools foreign kernsmooth r-cran-class r-cran-coda r-cran-spatial r-cran-nnet r-cran-mass rodbc rpart survival littler rpy rkward r-cran-rjags; do
  
  ./backport -s $i $DIST

done