#!/bin/bash
#
# Roundcube software upgrader.
#

# Config parameters
BASENAME="`basename $0`"
OLD_VERSION="$1"
VERSION="$2"
SHA256="$3"

# Syntax check
if [ -z "$3" ]; then
  echo "usage: $BASENAME <old-version> <new-version> <sha256>"
  exit 1
fi

# Check installed versions
if [ ! -d "roundcubemail-$OLD_VERSION" ]; then
  echo "error: roundcubemail-$OLD_VERSION is not installed, aborting."
  exit 1
elif [ -d "roundcubemail-$VERSION" ]; then
  echo "error: roundcubemail-$VERSION already installed, aborting."
  exit 1
fi

# Download package
wget -c https://github.com/roundcube/roundcubemail/releases/download/$VERSION/roundcubemail-$VERSION.tar.gz

# Check integrity
echo "$SHA256  roundcubemail-$VERSION.tar.gz" | sha256sum -c
if [ "$?" != "0" ]; then
  echo "error: roundcubemail-$VERSION.tar.gz doesn't match SHA256 $SHA256, aborting"
  exit
fi

# Decompress
tar xvf roundcubemail-$VERSION.tar.gz

# Remove package
rm roundcubemail-$VERSION.tar.gz

# Fix permissions
chown -R root: roundcubemail-$VERSION

# Sync configuration
for section in db config custom logs temp; do
  rsync -av roundcubemail-$OLD_VERSION/$section/ roundcubemail-$VERSION/$section/
done

# Symlink skins
(
  cd roundcubemail-$VERSION/skins
  for skin in `ls ../custom/skins`; do
    ln -s ../custom/skins/$skin
  done
)

# Pivot
rm roundcube && ln -s roundcubemail-$VERSION roundcube

# Audit
echo "Audit:" && \
du -hs roundcubemail-$OLD_VERSION && \
du -hs roundcubemail-$VERSION

# Manual steps
echo "Please update plugin symlinks manually."