# Node Helpers
# ------------

selectNodeVersion () {
  if [[ -n "$KUDU_SELECT_NODE_VERSION_CMD" ]]; then
    SELECT_NODE_VERSION="$KUDU_SELECT_NODE_VERSION_CMD \"$DEPLOYMENT_SOURCE{SitePath}\" \"$DEPLOYMENT_TARGET\" \"$DEPLOYMENT_TEMP\""
    eval $SELECT_NODE_VERSION
    exitWithMessageOnError "select node version failed"

    if [[ -e "$DEPLOYMENT_TEMP/__nodeVersion.tmp" ]]; then
      NODE_EXE=`cat "$DEPLOYMENT_TEMP/__nodeVersion.tmp"`
      exitWithMessageOnError "getting node version failed"
    fi
    
    if [[ -e "$DEPLOYMENT_TEMP/__npmVersion.tmp" ]]; then
      NPM_JS_PATH=`cat "$DEPLOYMENT_TEMP/__npmVersion.tmp"`
      exitWithMessageOnError "getting npm version failed"
    fi

    if [[ ! -n "$NODE_EXE" ]]; then
      NODE_EXE=node
    fi

    NPM_CMD="\"$NODE_EXE\" \"$NPM_JS_PATH\""
  else
    NPM_CMD=npm
    NODE_EXE=node
  fi
}

##################################################################################################################################
# Deployment
# ----------

echo Handling node.js deployment.

# 1. KuduSync
if [[ "$IN_PLACE_DEPLOYMENT" -ne "1" ]]; then
  "$KUDU_SYNC_CMD" -v 50 -f "$DEPLOYMENT_SOURCE{SitePath}" -t "$DEPLOYMENT_TARGET" -n "$NEXT_MANIFEST_PATH" -p "$PREVIOUS_MANIFEST_PATH" -i ".git;.hg;.deployment;deploy.sh"
  exitWithMessageOnError "Kudu Sync failed"
fi

# 2. Select node version
selectNodeVersion

# 3. Install npm packages
if [ -e "$DEPLOYMENT_TARGET/package.json" ]; then
  cd "$DEPLOYMENT_TARGET"
  echo "Running $NPM_CMD install --production"
  eval $NPM_CMD install --production
  exitWithMessageOnError "npm failed"
  cd - > /dev/null
fi

##################################################################################################################################