// 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 { observer } from 'mobx-react';
import React, { Component, PropTypes } from 'react';
import { FormattedMessage } from 'react-intl';
import { IconButton } from 'material-ui';
import { RadioButton, RadioButtonGroup } from 'material-ui/RadioButton';

import { Form, Input, IdentityIcon, PasswordStrength } from '~/ui';
import { RefreshIcon } from '~/ui/Icons';

import styles from '../createAccount.css';

@observer
export default class CreateAccount extends Component {
  static propTypes = {
    newError: PropTypes.func.isRequired,
    store: PropTypes.object.isRequired
  }

  state = {
    accounts: null,
    selectedAddress: ''
  }

  componentWillMount () {
    return this.createIdentities();
  }

  render () {
    const { name, nameError, password, passwordRepeat, passwordRepeatError, passwordHint } = this.props.store;

    return (
      <Form>
        <Input
          error={ nameError }
          hint={
            <FormattedMessage
              id='createAccount.newAccount.name.hint'
              defaultMessage='a descriptive name for the account'
            />
          }
          label={
            <FormattedMessage
              id='createAccount.newAccount.name.label'
              defaultMessage='account name'
            />
          }
          onChange={ this.onEditAccountName }
          value={ name }
        />
        <Input
          hint={
            <FormattedMessage
              id='createAccount.newAccount.hint.hint'
              defaultMessage='(optional) a hint to help with remembering the password'
            />
          }
          label={
            <FormattedMessage
              id='createAccount.newAccount.hint.label'
              defaultMessage='password hint'
            />
          }
          onChange={ this.onEditPasswordHint }
          value={ passwordHint }
        />
        <div className={ styles.passwords }>
          <div className={ styles.password }>
            <Input
              hint={
                <FormattedMessage
                  id='createAccount.newAccount.password.hint'
                  defaultMessage='a strong, unique password'
                />
              }
              label={
                <FormattedMessage
                  id='createAccount.newAccount.password.label'
                  defaultMessage='password'
                />
              }
              onChange={ this.onEditPassword }
              type='password'
              value={ password }
            />
          </div>
          <div className={ styles.password }>
            <Input
              error={ passwordRepeatError }
              hint={
                <FormattedMessage
                  id='createAccount.newAccount.password2.hint'
                  defaultMessage='verify your password'
                />
              }
              label={
                <FormattedMessage
                  id='createAccount.newAccount.password2.label'
                  defaultMessage='password (repeat)'
                />
              }
              onChange={ this.onEditPasswordRepeat }
              type='password'
              value={ passwordRepeat }
            />
          </div>
        </div>
        <PasswordStrength input={ password } />
        { this.renderIdentitySelector() }
        { this.renderIdentities() }
      </Form>
    );
  }

  renderIdentitySelector () {
    const { accounts, selectedAddress } = this.state;

    if (!accounts) {
      return null;
    }

    const buttons = Object
      .keys(accounts)
      .map((address) => {
        return (
          <RadioButton
            className={ styles.button }
            key={ address }
            value={ address }
          />
        );
      });

    return (
      <RadioButtonGroup
        className={ styles.selector }
        name='identitySelector'
        onChange={ this.onChangeIdentity }
        valueSelected={ selectedAddress }
      >
        { buttons }
      </RadioButtonGroup>
    );
  }

  renderIdentities () {
    const { accounts } = this.state;

    if (!accounts) {
      return null;
    }

    const identities = Object
      .keys(accounts)
      .map((address) => {
        return (
          <div
            className={ styles.identity }
            key={ address }
            onTouchTap={ this.onChangeIdentity }
          >
            <IdentityIcon
              address={ address }
              center
            />
          </div>
        );
      });

    return (
      <div className={ styles.identities }>
        { identities }
        <div className={ styles.refresh }>
          <IconButton onTouchTap={ this.createIdentities }>
            <RefreshIcon color='rgb(0, 151, 167)' />
          </IconButton>
        </div>
      </div>
    );
  }

  createIdentities = () => {
    const { store } = this.props;

    return store
      .createIdentities()
      .then((accounts) => {
        const selectedAddress = Object.keys(accounts)[0];
        const { phrase } = accounts[selectedAddress];

        store.setAddress(selectedAddress);
        store.setPhrase(phrase);

        this.setState({
          accounts,
          selectedAddress
        });
      })
      .catch((error) => {
        this.props.newError(error);
      });
  }

  onChangeIdentity = (event) => {
    const { store } = this.props;
    const selectedAddress = event.target.value || event.target.getAttribute('value');

    if (!selectedAddress) {
      return;
    }

    this.setState({ selectedAddress }, () => {
      const { phrase } = this.state.accounts[selectedAddress];

      store.setAddress(selectedAddress);
      store.setPhrase(phrase);
    });
  }

  onEditPasswordHint = (event, passwordHint) => {
    const { store } = this.props;

    store.setPasswordHint(passwordHint);
  }

  onEditAccountName = (event, name) => {
    const { store } = this.props;

    store.setName(name);
  }

  onEditPassword = (event, password) => {
    const { store } = this.props;

    store.setPassword(password);
  }

  onEditPasswordRepeat = (event, password) => {
    const { store } = this.props;

    store.setPasswordRepeat(password);
  }
}