#!/usr/bin/env bash

function cleanup_from_previous_test() {
    VMS=$( sudo virsh list|grep running|awk '{print $2}' )
    for VM in $VMS
    do
      sudo uvt-kvm destroy $VM
    done

    rm -rf ~/.juju
    rm -f ~/.ssh/known_hosts
    rm -rf ~/openstack-cluster-setup

    sudo rm -f /var/lib/libvirt/dnsmasq/default.leases
    sudo killall -HUP dnsmasq
}

function bootstrap() {
    cd ~
    sudo apt-get update
    sudo apt-get -y install software-properties-common git mosh tmux dnsutils python-netaddr
    sudo add-apt-repository -y ppa:ansible/ansible
    sudo apt-get update
    sudo apt-get install -y ansible

    [ -e ~/.ssh/id_rsa ] || ssh-keygen -t rsa -N "" -f ~/.ssh/id_rsa
    cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

    git clone https://github.com/open-cloud/openstack-cluster-setup.git
    cd ~/openstack-cluster-setup
    git checkout roles

    sed -i "s/ubuntu/`whoami`/" inventory/cord-cloudlab
    cp vars/example_keystone.yml vars/cord_keystone.yml

    # Log into the local node once to get host key
    ssh -o StrictHostKeyChecking=no localhost "ls > /dev/null"
}

function setup_openstack() {
    # Run the playbook
    ansible-playbook -i inventory/cord-cloudlab cord-single-playbook.yml
}

function build_xos_with_exampleservice() {
    echo ""
    echo "Adding exampleservice to XOS"
    ssh ubuntu@xos "cd xos; git config --global user.email 'ubuntu@localhost'; git config --global user.name 'XOS ExampleService'"
    ssh ubuntu@xos "cd xos/xos/configurations/cord-pod; git cherry-pick 775e00549e535803522fbcd70152e5e1b0629c83"
    echo ""
    echo "Rebuilding XOS containers"
    ssh ubuntu@xos "cd xos/xos/configurations/cord-pod; make local_containers"
}

function setup_xos() {
    echo ""
    echo "Setting up XOS, will take a few minutes"
    ssh ubuntu@xos "cd xos/xos/configurations/cord-pod; make"
    echo ""
    echo "Pause 2 minutes"
    sleep 120

    ssh ubuntu@xos "cd xos/xos/configurations/cord-pod; make vtn"
    echo ""
    echo "Pause 30 seconds"
    sleep 30

    ssh ubuntu@xos "cd xos/xos/configurations/cord-pod; make cord"
}

function setup_test_client() {
    ssh ubuntu@nova-compute "sudo apt-get -y install lxc"

    # Change default bridge
    ssh ubuntu@nova-compute "sudo sed -i 's/lxcbr0/databr/' /etc/lxc/default.conf"

    # Create test client
    ssh ubuntu@nova-compute "sudo lxc-create -t ubuntu -n testclient"
    ssh ubuntu@nova-compute "sudo lxc-start -n testclient"

    # Configure network interface inside of test client with s-tag and c-tag
    ssh ubuntu@nova-compute "sudo lxc-attach -n testclient -- ip link add link eth0 name eth0.222 type vlan id 222"
    ssh ubuntu@nova-compute "sudo lxc-attach -n testclient -- ip link add link eth0.222 name eth0.222.111 type vlan id 111"
    ssh ubuntu@nova-compute "sudo lxc-attach -n testclient -- ifconfig eth0.222 up"
    ssh ubuntu@nova-compute "sudo lxc-attach -n testclient -- ifconfig eth0.222.111 up"

    if [[ $EXAMPLESERVICE -eq 1 ]]
    then
      ssh ubuntu@xos "cd xos/xos/configurations/cord-pod; make exampleservice"
    fi
}

function run_e2e_test() {
    source ~/admin-openrc.sh

    echo "*** Wait for vSG VM to come up"
    i=0

    until nova list --all-tenants|grep 'vsg.*ACTIVE' > /dev/null
    do
      sleep 60
      (( i += 1 ))
      echo "Waited $i minutes"
    done

    # get mgmt IP address
    ID=$( nova list --all-tenants|grep mysite_vsg|awk '{print $2}' )
    MGMTIP=$( nova interface-list $ID|grep 172.27|awk '{print $8}' )

    echo ""
    echo "*** ssh into vsg VM, wait for Docker container to come up"
    i=0
    until ssh -o ProxyCommand="ssh -W %h:%p ubuntu@nova-compute" ubuntu@$MGMTIP "sudo docker ps|grep vcpe" > /dev/null
    do
      sleep 60
      (( i += 1 ))
      echo "Waited $i minutes"
    done

    echo ""
    echo "*** Run dhclient in test client"

    ssh ubuntu@nova-compute "sudo lxc-attach -n testclient -- dhclient eth0.222.111" > /dev/null

    echo ""
    echo "*** Routes in test client"
    ssh ubuntu@nova-compute "sudo lxc-attach -n testclient -- route -n"

    echo ""
    echo "*** Test external connectivity in test client"
    ssh ubuntu@nova-compute "sudo lxc-attach -n testclient -- ping -c 3 8.8.8.8"

    echo ""
    if [ $? -eq 0 ]
    then
      echo "*** [PASSED] End-to-end connectivity test"
    else
      echo "*** [FAILED] End-to-end connectivity test"
      exit 1
    fi
}

function run_exampleservice_test () {
    source ~/admin-openrc.sh

    echo "*** Wait for exampleservice VM to come up."
    i=0
    until nova list --all-tenants|grep exampleservice.*ACTIVE > /dev/null
    do
      sleep 60
	    (( i += 1 ))
	    echo "Waited $i minutes"
    done

    # get mgmt IP address
    ID=$( nova list --all-tenants|grep mysite_exampleservice|awk '{print $2}' )
    MGMTIP=$( nova interface-list $ID|grep 172.27|awk '{print $8}' )
    PUBLICIP=$( nova interface-list $ID|grep 10.168|awk '{print $8}' )

    echo ""
    echo "*** ssh into exampleservice VM, wait for Apache come up"
    i=0
    until ssh -o ProxyCommand="ssh -W %h:%p ubuntu@nova-compute" ubuntu@$MGMTIP "ls /var/run/apache2/apache2.pid"
    do
      sleep 60
      (( i += 1 ))
      echo "Waited $i minutes"
    done


    echo ""
    echo "*** Install curl in test client"
    ssh ubuntu@nova-compute "sudo lxc-attach -n testclient -- apt-get -y install curl"

    echo ""
    echo "*** Test connectivity to ExampleService from test client"
    ssh ubuntu@nova-compute "sudo lxc-attach -n testclient -- curl -s http://$PUBLICIP"
}

# Parse options
RUN_TEST=0
EXAMPLESERVICE=0
while getopts ":eht" opt; do
  case ${opt} in
    h ) "echo Usage:"
      echo "    $0            install OpenStack and prep XOS and ONOS VMs [default]"
      echo "    $0 -e         add exampleservice to XOS"
      echo "    $0 -h         display this help message"
      echo "    $0 -t         do install, bring up cord-pod configuration, run E2E test"
      exit 0
      ;;
    t ) RUN_TEST=1
      ;;
    e ) EXAMPLESERVICE=1
      ;;
    \? ) echo "Invalid option"
      exit 1
      ;;
  esac
done

# What to do
if [[ $RUN_TEST -eq 1 ]]
then
  cleanup_from_previous_test
fi

set -e

bootstrap
setup_openstack

if [[ $RUN_TEST -eq 1 ]]
then
  if [[ $EXAMPLESERVICE -eq 1 ]]
  then
    build_xos_with_exampleservice
  fi
  setup_xos
  setup_test_client
  run_e2e_test
  if [[ $EXAMPLESERVICE -eq 1 ]]
  then
    run_exampleservice_test
  fi
fi

exit 0