# Preview functions

# Preview email
# If a thread identifier is given, then the last message in the thread is
# shown. If the HTML flag is set, then the HTML message is parsed using pandoc.
# This functions reverts to the HTML method if no HTML flag is set yet no
# text/plain part is found.
#
# @argument $1: "id" or "thread"
# @argument $2: message id or thread id
# @argument #3: if set, then the HTML messages will be taken
preview_message() {
  [ "$1" = "id" ] && messageid="$2" || messageid="$(nm_last_message_in_thread "$2")"
  echo "preview_message: messageid=$messageid" >> /tmp/foo
  parts="$(nm_message_parts "$messageid")"
  echo "preview_message: parts=$parts" >> /tmp/foo
  html="${3:-}"
  echo "preview_message: html=$html" >> /tmp/foo
  nr="$(nm_message_part_nr "$messageid" "$html")"
  echo "preview_message: nr=$nr" >> /tmp/foo
  [ ! "$nr" ] && [ ! "$html" ] && html="html" && nr="$(nm_message_part_nr "$messageid" "html")"
  echo "preview_message: nr=$nr" >> /tmp/foo
  [ "$html" ] && parser="$PANDOC" || parser="cat"
  nm_message_header "$messageid" | $CATEMAIL
  [ "$nr" ] && (nm_message_get_part "$messageid" "$nr" | $parser | $CATMD)
}