// 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 React, { Component, PropTypes } from 'react';
import { connect } from 'react-redux';
import { bindActionCreators } from 'redux';

import { isNullAddress } from '~/util/validation';
import ShortenedHash from '../ShortenedHash';

const defaultName = 'UNNAMED';

class IdentityName extends Component {
  static propTypes = {
    accountsInfo: PropTypes.object,
    address: PropTypes.string,
    className: PropTypes.string,
    empty: PropTypes.bool,
    name: PropTypes.string,
    shorten: PropTypes.bool,
    tokens: PropTypes.object,
    unknown: PropTypes.bool
  }

  render () {
    const { address, accountsInfo, className, empty, name, shorten, tokens, unknown } = this.props;
    const account = accountsInfo[address] || tokens[address];

    if (!account && empty) {
      return null;
    }

    const nullName = isNullAddress(address) ? 'null' : null;
    const addressFallback = nullName || (shorten ? (<ShortenedHash data={ address } />) : address);
    const fallback = unknown ? defaultName : addressFallback;
    const isUuid = account && account.name === account.uuid;
    const displayName = (name && name.toUpperCase().trim()) ||
      (account && !isUuid
        ? account.name.toUpperCase().trim()
        : fallback
      );

    return (
      <span className={ className }>
        {
          displayName && displayName.length
            ? displayName
            : fallback
        }
      </span>
    );
  }
}

function mapStateToProps (state) {
  const { accountsInfo } = state.personal;
  const { tokens } = state.balances;

  return {
    accountsInfo,
    tokens
  };
}

function mapDispatchToProps (dispatch) {
  return bindActionCreators({}, dispatch);
}

export default connect(
  mapStateToProps,
  mapDispatchToProps
)(IdentityName);