#/bin/bash
#
# Copyright 2018 - The Android Open Source Project
#
# 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.
#

SCRIPT_NAME=$(basename $0)
usage()
{
  echo "Usage: $SCRIPT_NAME <task_name> [options]"
  echo ""
  echo "Options:"
  echo "  -p PASSWORD         password for hosts."
  echo "  -H PATH             path to a .py file contains hosts information"
  echo "  -i PATH             path to a .py file contains ip address information of certified machines"
  echo "  -f GCS_URL          URL to the vtslab package file to be deployed."
  exit 1
}

FABRIC_EXISTS=$(pip show fabric)
if [ -z "$FABRIC_EXISTS" ]; then
  INSTALL_FABRIC=true
else
  FABRIC_VERSION=$(fab -V | grep Fabric)
  if [ "${FABRIC_VERSION:7:1}" -ne 1 ]; then
    INSTALL_FABRIC=true
  fi
fi
if [ "$INSTALL_FABRIC" == true ]; then
  sudo pip install fabric==1.14.0 --force
fi

TASK=$1
if [[ ${TASK:0:1} == "-" ]]; then
  usage
fi

shift
PASSWORD=""
HOSTS_PATH="hosts.py"
IPADDRESSES_PATH=""
VTSLAB_PACKAGE_GCS_URL=""

while getopts ":p:H:i:f:" opt; do
  case $opt in
    p)
      PASSWORD=$OPTARG
      ;;
    H)
      HOSTS_PATH=$OPTARG
      ;;
    i)
      IPADDRESSES_PATH=$OPTARG
      ;;
    f)
      VTSLAB_PACKAGE_GCS_URL=$OPTARG
      ;;
    \?)
      echo "Invalid option: -$OPTARG"
      usage
      ;;
    :)
      echo "Option -$OPTARG requires an argument."
      usage
      ;;
  esac
done

if [ "$TASK" == "SetupIptables" ]; then
  fab SetPassword:$PASSWORD GetHosts:$HOSTS_PATH $TASK:$IPADDRESSES_PATH
elif [ "$TASK" == "SetupPackages" ]; then
  if [ -z "$IPADDRESSES_PATH" ]; then
    fab SetPassword:$PASSWORD GetHosts:$HOSTS_PATH $TASK
  else
    fab SetPassword:$PASSWORD GetHosts:$HOSTS_PATH $TASK:$IPADDRESSES_PATH
  fi
elif [ "$TASK" == "DeployVtslab" ] || [ "$TASK" == "DeployGCE" ]; then
  if [ -z "$VTSLAB_PACKAGE_GCS_URL" ]; then
    echo "Please specify vtslab package file URL using -f option."
    exit
  fi
  fab SetPassword:$PASSWORD GetHosts:$HOSTS_PATH $TASK:$VTSLAB_PACKAGE_GCS_URL
else
  fab SetPassword:$PASSWORD GetHosts:$HOSTS_PATH $TASK
fi