#!/usr/bin/env bash
# repo_bootstrap.sh

# Use master as default version
REPO_BRANCH=${REPO_BRANCH:-'master'}
ONOS_REPO_DIR=${ONOS_REPO_DIR:-'~/onos_repo'}

function install_repo_tool() {
  if [ ! -x "/usr/local/bin/repo" ]
  then
    echo "Installing repo..."
    REPO_SHA256SUM="e147f0392686c40cfd7d5e6f332c6ee74c4eab4d24e2694b3b0a0c037bf51dc5" # not versioned...
    curl -o /tmp/repo https://storage.googleapis.com/git-repo-downloads/repo
    echo "$REPO_SHA256SUM  /tmp/repo" | sha256sum -c -
    sudo mv /tmp/repo /usr/local/bin/repo
    sudo chmod a+x /usr/local/bin/repo
  fi
}

function checkout_onos_with_repo() {

  if [ ! -d "$ONOS_REPO_DIR" ]
  then
    echo "Checking out ONOS using repo..."

    mkdir $ONOS_REPO_DIR && cd $ONOS_REPO_DIR
    repo init -u https://gerrit.onosproject.org/manifest -b $REPO_BRANCH -g onos
    repo sync

    # check out gerrit branches using repo
    for gerrit_branch in ${GERRIT_BRANCHES[@]}; do
      echo "Checking out opencord gerrit branch: $gerrit_branch"
      repo download ${gerrit_branch/:/ }
    done
  fi
}

# Parse options
GERRIT_BRANCHES=

while getopts "b:chsv" opt; do
  case ${opt} in
    b ) GERRIT_BRANCHES+=("$OPTARG")
      ;;
    h ) echo "Usage:"
      echo "    $0                download ONOS using repo [default]"
      echo "    $0 -b <project:changeset/revision>  checkout changesets from gerrit. Can"
      echo "                      be used multiple times."
      echo "    $0 -h             display this help message"
     \? ) echo "Invalid option: -$OPTARG"
      exit 1
      ;;
  esac
done

install_repo_tool()
checkout_onos_with_repo()