if [[ -z "$GIT_AUTHOR_EMAIL" || -z "$GIT_AUTHOR_NAME" ]]; then
  export GIT_AUTHOR_NAME=PREVENT_DEFAULT
else
  export GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL
  export GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
fi

function sigint_handler() {
  trap - INT
}

function setuser() {
  if [[ $# -eq 0 ]]; then
    cat << EOF

    Usage:
          setuser <personal linux username>

    set author for git commit and get gitea token from linse-c if available

EOF
    if [[ "$GIT_AUTHOR_NAME" != "PREVENT_DEFAULT" ]]; then
      echo "you are already identified as $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>"
      echo " "
    fi
  else
    local isuser=$(ssh l_samenv@linse-c "test -d ~$1 && echo OK" 2>/dev/null)
    if [[ "$isuser" == "OK" ]]; then
      echo " "
      if [[ "$GIT_AUTHOR_NAME" != "PREVENT_DEFAULT" && ! -z "$GITEA_TOKEN" ]]; then
        echo "you are already identified as $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL> - you may press ctrl-c to abort"
        echo "get token again from $1@linse-c"
      else
        echo "get token from $1@linse-c"
      fi
      trap sigint_handler SIGINT
      local all=($(ssh $1@linse-c 'echo _ $GITEA_TOKEN $GIT_AUTHOR_EMAIL $GIT_AUTHOR_NAME' 2>/dev/null))
      if [[ -z "$all" ]]; then
        return 1
      fi
      local token=${all[1]}
      local email=${all[2]}
      local name=${all[@]:3:9}
      if [[ -z "$token" || -z "$email" || -z "$name" ]]; then
        echo "GITEA_TOKEN, GIT_AUTHOR_EMAIL and GIT_AUTHOR_NAME are not defined in your rc file on $1@linse-c"
      else
        export GITEA_TOKEN=$token
        export GIT_AUTHOR_EMAIL=$email
        export GIT_AUTHOR_NAME=$name
        echo "you are identified as $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>"
      fi
      echo " "
    else
      host=($(hostname -A))
      export GIT_AUTHOR_NAME="$1"
      export GIT_AUTHOR_EMAIL="$1@$host"
      echo " "
      echo "$1 is no valid linux user on linse-c -> no gitea token available for git push"
      echo " "
      echo "however, you are identified as $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL> for git commit"
      echo " "
    fi
  fi
  export GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL
  export GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
}