#!/usr/bin/env bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2024, OpenNebula Project, OpenNebula Systems                #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
#--------------------------------------------------------------------------- #

set -eo pipefail

export USER_DATA="${USER_DATA:-${USERDATA}}"
if [ -z "$USER_DATA" ]; then
    echo "No USER_DATA env variable found. Skipping execution..."
    exit 0
fi

CLOUDINIT_BASE_DIR="/var/lib/one-context/cloudinit"
CLOUDINIT_ENV_FILE="${CLOUDINIT_BASE_DIR}/cloudinit_env.sh"
CLOUDINIT_LOCK_FILE="${CLOUDINIT_BASE_DIR}/cloudinit-boot-finished"
CLOUDINIT_RUNCMD_TMP_DIR="${CLOUDINIT_BASE_DIR}/tmp"
CLOUDINIT_RUNCMD_TMP_SCRIPT="${CLOUDINIT_RUNCMD_TMP_DIR}/runcmd_script.sh"

bootstrap_cloudinit_env()
{
    install -m "u=rwx,go=" -d "${CLOUDINIT_BASE_DIR}"
    {
        echo "export CLOUDINIT_LOCK_FILE=${CLOUDINIT_LOCK_FILE}"
        echo "export CLOUDINIT_BASE_DIR=${CLOUDINIT_BASE_DIR}"
        echo "export CLOUDINIT_RUNCMD_TMP_DIR=${CLOUDINIT_RUNCMD_TMP_DIR}"
        echo "export CLOUDINIT_RUNCMD_TMP_SCRIPT=${CLOUDINIT_RUNCMD_TMP_SCRIPT}"
    } >> "${CLOUDINIT_ENV_FILE}"

}

if [ -e "${CLOUDINIT_LOCK_FILE}" ]; then
    echo "Lock file exists in ${CLOUDINIT_LOCK_FILE}. Skipping execution..."
    exit 0
fi
bootstrap_cloudinit_env

# creates tmp dir for cloudinit runcmd script
install -m "u=rwx,go=" -d "${CLOUDINIT_RUNCMD_TMP_DIR}"

USER_DATA_ENCODING="${USER_DATA_ENCODING:-${USERDATA_ENCODING}}"

if [ "${USER_DATA_ENCODING}" = "base64" ]; then
    if ! USER_DATA="$(echo "${USER_DATA}" | base64 -d 2>/dev/null)"; then
        echo "Error: Failed base64 decoding of userdata" >&2
        exit 1
    fi
fi

# shellcheck source=/dev/null
. "${CLOUDINIT_ENV_FILE}"

one_cloudinit.rb
EXIT_CODE=$?

if [ "${EXIT_CODE}" -ne 0 ]; then
    echo "one_cloudinit execution failed. Exit code: ${EXIT_CODE}"
    exit 1
fi
echo "one_cloudinit execution finished"