import React from 'react';
import { connect } from 'react-redux';
import ImmutablePropTypes from 'react-immutable-proptypes';
import PropTypes from 'prop-types';
import { fetchAccount, fetchAccountByUsername } from '../../actions/accounts';
import { expandAccountFeaturedTimeline, expandAccountTimeline } from '../../actions/timelines';
import StatusList from '../../components/status_list';
import LoadingIndicator from '../../components/loading_indicator';
import Column from '../ui/components/column';
import { List as ImmutableList } from 'immutable';
import ImmutablePureComponent from 'react-immutable-pure-component';
import { FormattedMessage } from 'react-intl';
import { fetchAccountIdentityProofs } from '../../actions/identity_proofs';
import MissingIndicator from 'gabsocial/components/missing_indicator';
import { NavLink } from 'react-router-dom';
import { me } from 'gabsocial/initial_state';

const emptyList = ImmutableList();

const mapStateToProps = (state, { params: { username }, withReplies = false }) => {
  const accounts = state.getIn(['accounts']);
  const accountFetchError = (state.getIn(['accounts', -1, 'username'], '').toLowerCase() == username.toLowerCase());

  let accountId = -1;
  let accountUsername = username;
  if (accountFetchError) {
    accountId = null;
  }
  else {
    let account = accounts.find(acct => username.toLowerCase() == acct.getIn(['acct'], '').toLowerCase());
    accountId = account ? account.getIn(['id'], null) : -1;
    accountUsername = account ? account.getIn(['acct'], '') : '';
  }

  const path = withReplies ? `${accountId}:with_replies` : accountId;

  const isBlocked = state.getIn(['relationships', accountId, 'blocked_by'], false);
  const isLocked = state.getIn(['accounts', accountId, 'locked'], false);
  const isFollowing = state.getIn(['relationships', accountId, 'following'], false);
  const unavailable = (me == accountId) ? false : (isBlocked || (isLocked && !isFollowing));

  return {
    accountId,
    unavailable,
    accountUsername,
    isAccount: !!state.getIn(['accounts', accountId]),
    statusIds: state.getIn(['timelines', `account:${path}`, 'items'], emptyList),
    featuredStatusIds: withReplies ? ImmutableList() : state.getIn(['timelines', `account:${accountId}:pinned`, 'items'], emptyList),
    isLoading: state.getIn(['timelines', `account:${path}`, 'isLoading']),
    hasMore: state.getIn(['timelines', `account:${path}`, 'hasMore']),
  };
};

export default @connect(mapStateToProps)
class AccountTimeline extends ImmutablePureComponent {

  static propTypes = {
    params: PropTypes.object.isRequired,
    dispatch: PropTypes.func.isRequired,
    statusIds: ImmutablePropTypes.list,
    featuredStatusIds: ImmutablePropTypes.list,
    isLoading: PropTypes.bool,
    hasMore: PropTypes.bool,
    withReplies: PropTypes.bool,
    isAccount: PropTypes.bool,
    unavailable: PropTypes.bool,
  };

  componentWillMount () {
    const { params: { username }, accountId, withReplies } = this.props;

    if (accountId && accountId !== -1) {
      this.props.dispatch(fetchAccount(accountId));
      this.props.dispatch(fetchAccountIdentityProofs(accountId));

      if (!withReplies) {
        this.props.dispatch(expandAccountFeaturedTimeline(accountId));
      }

      this.props.dispatch(expandAccountTimeline(accountId, { withReplies }));
    }
    else {
      this.props.dispatch(fetchAccountByUsername(username));
    }
  }

  componentWillReceiveProps (nextProps) {
    if (nextProps.accountId && nextProps.accountId !== -1 && (nextProps.accountId !== this.props.accountId && nextProps.accountId) || nextProps.withReplies !== this.props.withReplies) {
      this.props.dispatch(fetchAccount(nextProps.accountId));
      this.props.dispatch(fetchAccountIdentityProofs(nextProps.accountId));

      if (!nextProps.withReplies) {
        this.props.dispatch(expandAccountFeaturedTimeline(nextProps.accountId));
      }

      this.props.dispatch(expandAccountTimeline(nextProps.accountId, { withReplies: nextProps.params.withReplies }));
    }
  }

  handleLoadMore = maxId => {
    if (this.props.accountId && this.props.accountId !== -1) {
      this.props.dispatch(expandAccountTimeline(this.props.accountId, { maxId, withReplies: this.props.withReplies }));
    }
  }

  render () {
    const { statusIds, featuredStatusIds, isLoading, hasMore, isAccount, accountId, unavailable, accountUsername } = this.props;

    if (!isAccount && accountId !== -1) {
      return (
        <Column>
          <MissingIndicator />
        </Column>
      );
    }

    if (accountId == -1 || (!statusIds && isLoading)) {
      return (
        <Column>
          <LoadingIndicator />
        </Column>
      );
    }

    if (unavailable) {
      return (
        <Column>
          <div className='empty-column-indicator'>
            <FormattedMessage id='empty_column.account_unavailable' defaultMessage='Profile unavailable' />
          </div>
        </Column>
      );
    }

    return (
      <Column>
        <div className='account__section-headline'>
          <div style={{width: '100%', display: 'flex'}}>
            <NavLink exact to={`/${accountUsername}`}>
              <FormattedMessage id='account.posts' defaultMessage='Gabs' />
            </NavLink>
            <NavLink exact to={`/${accountUsername}/with_replies`}>
              <FormattedMessage id='account.posts_with_replies' defaultMessage='Gabs and replies' />
            </NavLink>
            <NavLink exact to={`/${accountUsername}/media`}>
              <FormattedMessage id='account.media' defaultMessage='Media' />
            </NavLink>
          </div>
        </div>
        <StatusList
          scrollKey='account_timeline'
          statusIds={statusIds}
          featuredStatusIds={featuredStatusIds}
          isLoading={isLoading}
          hasMore={hasMore}
          onLoadMore={this.handleLoadMore}
          emptyMessage={<FormattedMessage id='empty_column.account_timeline' defaultMessage='No gabs here!' />}
        />
      </Column>
    );
  }

}