// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
// This file is part of Parity.

// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Parity.  If not, see <http://www.gnu.org/licenses/>.

import { sha3 } from '../parity.js';

export const clear = () => ({ type: 'lookup clear' });

export const start = (name, key) => ({ type: 'lookup start', name, key });

export const success = (address) => ({ type: 'lookup success', result: address });

export const fail = () => ({ type: 'lookup error' });

export const lookup = (name, key) => (dispatch, getState) => {
  const { contract } = getState();

  if (!contract) {
    return;
  }

  const getAddress = contract.functions
    .find((f) => f.name === 'getAddress');

  name = name.toLowerCase();
  dispatch(start(name, key));
  getAddress.call({}, [sha3(name), key])
    .then((address) => dispatch(success(address)))
    .catch((err) => {
      console.error(`could not lookup ${key} for ${name}`);

      if (err) {
        console.error(err.stack);
      }

      dispatch(fail());
    });
};