import PropTypes from "prop-types";

import { FormattedMessage } from "react-intl";

import ImmutablePropTypes from "react-immutable-proptypes";
import ImmutablePureComponent from "react-immutable-pure-component";

import { Icon }  from "mastodon/components/icon";
import { LoadMore } from "mastodon/components/load_more";
import { SearchSection } from "mastodon/features/explore/components/search_section";

import { ImmutableHashtag as Hashtag } from "../../../components/hashtag";
import AccountContainer from "../../../containers/account_container";
import StatusContainer from "../../../containers/status_container";

const INITIAL_PAGE_LIMIT = 10;

const withoutLastResult = list => {
  if (list.size > INITIAL_PAGE_LIMIT && list.size % INITIAL_PAGE_LIMIT === 1) {
    return list.skipLast(1);
  } else {
    return list;
  }
};

class SearchResults extends ImmutablePureComponent {

  static propTypes = {
    results: ImmutablePropTypes.map.isRequired,
    expandSearch: PropTypes.func.isRequired,
    searchTerm: PropTypes.string,
  };

  handleLoadMoreAccounts = () => this.props.expandSearch("accounts");

  handleLoadMoreStatuses = () => this.props.expandSearch("statuses");

  handleLoadMoreHashtags = () => this.props.expandSearch("hashtags");

  render () {
    const { results } = this.props;

    let accounts, statuses, hashtags;

    if (results.get("accounts") && results.get("accounts").size > 0) {
      accounts = (
        <SearchSection title={<><Icon id='users' fixedWidth /><FormattedMessage id='search_results.accounts' defaultMessage='Profiles' /></>}>
          {withoutLastResult(results.get("accounts")).map(accountId => <AccountContainer key={accountId} id={accountId} />)}
          {(results.get("accounts").size > INITIAL_PAGE_LIMIT && results.get("accounts").size % INITIAL_PAGE_LIMIT === 1) && <LoadMore visible onClick={this.handleLoadMoreAccounts} />}
        </SearchSection>
      );
    }

    if (results.get("hashtags") && results.get("hashtags").size > 0) {
      hashtags = (
        <SearchSection title={<><Icon id='hashtag' fixedWidth /><FormattedMessage id='search_results.hashtags' defaultMessage='Hashtags' /></>}>
          {withoutLastResult(results.get("hashtags")).map(hashtag => <Hashtag key={hashtag.get("name")} hashtag={hashtag} />)}
          {(results.get("hashtags").size > INITIAL_PAGE_LIMIT && results.get("hashtags").size % INITIAL_PAGE_LIMIT === 1) && <LoadMore visible onClick={this.handleLoadMoreHashtags} />}
        </SearchSection>
      );
    }

    if (results.get("statuses") && results.get("statuses").size > 0) {
      statuses = (
        <SearchSection title={<><Icon id='quote-right' fixedWidth /><FormattedMessage id='search_results.statuses' defaultMessage='Posts' /></>}>
          {withoutLastResult(results.get("statuses")).map(statusId => <StatusContainer key={statusId} id={statusId} />)}
          {(results.get("statuses").size > INITIAL_PAGE_LIMIT && results.get("statuses").size % INITIAL_PAGE_LIMIT === 1) && <LoadMore visible onClick={this.handleLoadMoreStatuses} />}
        </SearchSection>
      );
    }


    return (
      <div className='search-results'>
        <div className='search-results__header'>
          <Icon id='search' fixedWidth />
          <FormattedMessage id='explore.search_results' defaultMessage='Search results' />
        </div>

        {accounts}
        {hashtags}
        {statuses}
      </div>
    );
  }

}

export default SearchResults;