oops: Fix check for existing remote path at init

df505c1 added a check for the remote path's existance at init time. This made
the assumption that the remote path was local. This patch fixes the issue by
connecting to the remote host and checking for the existance of the remote path
if a remote is specified.

bin/bitpocket

@@ -57,13 +57,16 @@ you encounter.
 fi
 
 # Decide on runner (ssh / bash -c)
-if [[ -n "$REMOTE_HOST" ]]; then
-  REMOTE_RUNNER="$RSYNC_RSH $REMOTE_HOST"
-  REMOTE="$REMOTE_HOST:$REMOTE_PATH"
-else
-  REMOTE_RUNNER="bash -c"
-  REMOTE="$REMOTE_PATH"
-fi
+function setup_remote() {
+    if [[ -n "$REMOTE_HOST" ]]; then
+      REMOTE_RUNNER="$RSYNC_RSH $REMOTE_HOST"
+      REMOTE="$REMOTE_HOST:$REMOTE_PATH"
+    else
+      REMOTE_RUNNER="bash -c"
+      REMOTE="$REMOTE_PATH"
+    fi
+}
+setup_remote
 
 # Version of the state files. Original version is 1, second version with
 # leading mode is 2.
@@ -118,8 +121,9 @@ function init {
   fi
 
   REMOTE_PATH="$1"
-  if [[ ! -d "$1" ]]; then
-    echo "fatal: '$1': Remote path is not accessible"
+  setup_remote
+  if $REMOTE_RUNNER "[ ! -d '$1' ]"; then
+    echo "fatal: '$REMOTE': Remote path is not accessible"
     exit 128
   fi
 
@@ -755,7 +759,7 @@ Available commands:
    sync    Run the sync process. If no command is specified, sync is run by
            default.
    init    Initialize a new bitpocket folder. Requires path and optional
-           remote hostparams.
+           remote host params. Remote path must already exist.
    pack    Pack any existing (automatic) backups into a git repository.
    cron    Run sync optimized for cron, logging output to file instead of
            stdout.