#!/bin/sh
set -e

BUILD_VERSION={version}
UPDATER={updater}

# Deal with existing nzbdrone installs
#
# Any existing nzbdrone package would already be in de deconfigured stage, so the binaries are gone.
# However the process might still be running since those are not part of the nzbdrone package.
# If the user manually installed nzbdrone then the process might still be running too.

if [ $1 = "install" ]; then
    psNzbDrone=`ps aux | grep mono.*NzbDrone\\\\.exe || true`
    if [ ! -z "$psNzbDrone" ]; then
        # TODO: Perform operations to detect auto-migration capabilities.
        
        # Return failure, which causes postrm abort-install to be called.
        echo "ps: $psNzbDrone"
        echo "Error: An existing Sonarr v2 (NzbDrone) process is running. Remove the NzbDrone auto-startup prior to installing sonarr."
        exit 1
    fi
fi


#BEGIN BUILTIN UPDATER
# Check for supported upgrade paths
if [ $1 = "upgrade" ] && [ "$UPDATER" = "BuiltIn" ] && [ -f /usr/lib/sonarr/bin/release_info ]; then
  # If we allow the Built-In updater to upgrade from 3.0.1.123 to 3.0.2.500 and now apt is catching up to 3.0.2.425
  # then we need to deal with that 500->425 'downgrade'.
  # We do that by preserving the binaries and using those instead for postinst.

  currentVersion=`cat /usr/lib/sonarr/bin/release_info | grep 'ReleaseVersion=' | cut -d= -f 2`
  currentRelease=`echo "$currentVersion" | cut -d. -f1,2,3`
  currentBuild=`echo "$currentVersion" | cut -d. -f4`
  targetVersion=$BUILD_VERSION
  targetRelease=`echo "$targetVersion" | cut -d. -f1,2,3`
  targetBuild=`echo "$targetVersion" | cut -d. -f4`

  if [ -d /usr/lib/sonarr/bin_patch ]; then
    rm -rf /usr/lib/sonarr/bin_patch
  fi

  # Check if the existing version is already an upgrade for the included build
  if [ "$currentRelease" = "$targetRelease" ] && [ "$currentBuild" -gt "$targetBuild" ]; then
    echo "Preserving $currentVersion from BuiltIn updater instead of downgrading to $targetVersion"
    cp -r /usr/lib/sonarr/bin /usr/lib/sonarr/bin_patch
  fi
fi
#END BUILTIN UPDATER

#DEBHELPER#

exit 0