#!/bin/bash

#
# Copyright (c) 2018 Wind River Systems, Inc.
#
# SPDX-License-Identifier: Apache-2.0
#

# This script takes the names of packaged helm charts as arguments.
# It installs them in the on-node helm chart repository and regenerates
# the repository index.


# We want to run as the "www" user and scripts can't be setuid.  The
# sudoers permissions are set up to allow sysadmin to run this script
# as the "www" user without a password.
if [ $USER != "www" ]; then
    exec sudo -u www $0 $@
fi


RETVAL=0
REINDEX=0

REPO_BASE='/www/pages/helm_charts'

# First argument is always the repo where the charts need to be placed
if [ $# -lt 2 ]; then
    echo "Usage: helm-upload <repo name> <chart 1> .. <chart N>"
    exit 1
fi

# Make sure the repo directory exists
REPO_DIR="${REPO_BASE}/$1"
if [ ! -e $REPO_DIR ]; then
    echo "$REPO_DIR doesn't exist."
    exit 1
fi

shift 1

for FILE in "$@"; do
    if [ -r $FILE ]; then
        # QUESTION:  should we disallow overwriting an existing file?
        # The versions are embedded in the filename, so it shouldn't
        # cause problems.
        cp $FILE $REPO_DIR
        if [ $? -ne 0 ]; then
            echo Problem adding $FILE to helm chart registry.
            RETVAL=1
        else
            REINDEX=1
        fi
    else
        echo Cannot read file ${FILE}.
        RETVAL=1
    fi
done


# Now re-index the helm repository if we successfully copied in
# any new charts.
if [ $REINDEX -eq 1 ]; then
    /usr/sbin/helm repo index $REPO_DIR
fi

exit $RETVAL