import React from 'react';
import PropTypes from 'prop-types';

import Page from '../PageList/Page';
import SearchResultList from './SearchResultList';
import DeletePageListModal from './DeletePageListModal';

// Search.SearchResult
export default class SearchResult extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      deletionMode : false,
      selectedPages : new Set(),
      isDeleteCompletely: undefined,
      isDeleteConfirmModalShown: false,
      errorMessageForDeleting: undefined,
    }
    this.toggleDeleteCompletely = this.toggleDeleteCompletely.bind(this);
    this.deleteSelectedPages = this.deleteSelectedPages.bind(this);
    this.closeDeleteConfirmModal = this.closeDeleteConfirmModal.bind(this);
  }

  isNotSearchedYet() {
    return !this.props.searchResultMeta.took;
  }

  isNotFound() {
    return this.props.searchingKeyword !== '' && this.props.pages.length === 0;
  }

  isError() {
    if (this.props.searchError !== null) {
      return true;
    }
    return false;
  }

  /**
   * toggle checkbox and add (or delete from) selected pages list
   *
   * @param {any} page
   * @memberof SearchResult
   */
  toggleCheckbox(page) {
    if (this.state.selectedPages.has(page)) {
      this.state.selectedPages.delete(page);
    } else {
      this.state.selectedPages.add(page);
    }
    this.setState({isDeleteConfirmModalShown: false});
    this.setState({selectedPages: this.state.selectedPages});
  }

  /**
   * check and return is all pages selected for delete?
   *
   * @returns all pages selected (or not)
   * @memberof SearchResult
   */
  isAllSelected() {
    return this.state.selectedPages.size == this.props.pages.length;
  }

  /**
   * handle checkbox clicking that all pages select for delete
   *
   * @memberof SearchResult
   */
  handleAllSelect() {
    if (this.isAllSelected()) {
      this.state.selectedPages.clear();
    }
    else {
      this.state.selectedPages.clear();
      this.props.pages.map((page) => {
        this.state.selectedPages.add(page);
      });
    }
    this.setState({selectedPages: this.state.selectedPages});
  }
  /**
   * change deletion mode
   *
   * @memberof SearchResult
   */
  handleDeletionModeChange() {
    this.state.selectedPages.clear();
    this.setState({deletionMode: !this.state.deletionMode});
  }

  /**
   * toggle check delete completely
   *
   * @memberof SearchResult
   */
  toggleDeleteCompletely() {
    // request で completely が undefined でないと指定アリと見なされるため
    this.setState({isDeleteCompletely: this.state.isDeleteCompletely? undefined : true});
  }

  /**
   * delete selected pages
   *
   * @memberof SearchResult
   */
  deleteSelectedPages() {
    let isDeleted = true;
    let deleteCompletely = this.state.isDeleteCompletely;
    Array.from(this.state.selectedPages).map((page) => {
      const pageId = page._id;
      const revisionId = page.revision._id;
      this.props.crowi.apiPost('/pages.remove',
        {page_id: pageId, revision_id: revisionId, completely: deleteCompletely})
      .then(res => {
        if (res.ok) {
          this.state.selectedPages.delete(page);
        }
        else {
          isDeleted = false;
        }
      }).catch(err => {
        console.log(err.message);
        isDeleted = false;
        this.setState({errorMessageForDeleting: err.message});
      });
    });

    if ( isDeleted ) {
      window.location.reload();
    }
  }

  /**
   * open confirm modal for page selection delete
   *
   * @memberof SearchResult
   */
  showDeleteConfirmModal() {
    this.setState({isDeleteConfirmModalShown: true});
  }

  /**
   * close confirm modal for page selection delete
   *
   * @memberof SearchResult
   */
  closeDeleteConfirmModal() {
    this.setState({
      isDeleteConfirmModalShown: false,
      errorMessageForDeleting: undefined,
    });
  }

  render() {
    const excludePathString = this.props.tree;

    //console.log(this.props.searchError);
    //console.log(this.isError());
    if (this.isError()) {
      return (
        <div className="content-main">
          <i className="searcing fa fa-warning"></i> Error on searching.
        </div>
      );
    }

    if (this.isNotSearchedYet()) {
      return <div />;
    }

    if (this.isNotFound()) {
      let under = '';
      if (this.props.tree !== '') {
        under = ` under "${this.props.tree}"`;
      }
      return (
        <div className="content-main">
            <i className="fa fa-meh-o" /> No page found with "{this.props.searchingKeyword}"{under}
        </div>
      );

    }

    let deletionModeButtons = '';
    let allSelectCheck = '';

    if (this.state.deletionMode) {
      deletionModeButtons =
      <div className="btn-group">
        <button type="button" className="btn btn-danger btn-xs" onClick={() => this.showDeleteConfirmModal()} disabled={this.state.selectedPages.size == 0}><i className="fa fa-trash-o"/> Delete</button>
        <button type="button" className="btn btn-default btn-xs" onClick={() => this.handleDeletionModeChange()}><i className="fa fa-undo"/> Cancel</button>
      </div>
      allSelectCheck =
      <div>
        <label>
          <input
            type="checkbox"
            onClick={() => this.handleAllSelect()}
            checked={this.isAllSelected()} />
            &nbsp;Check All
        </label>
      </div>
    }
    else {
      deletionModeButtons =
      <div className="btn-group">
        <button type="button" className="btn btn-default btn-xs" onClick={() => this.handleDeletionModeChange()}>
          <i className="fa fa-toggle-off"/> DeletionMode
        </button>
      </div>
    }

    const listView = this.props.pages.map((page) => {
      const pageId = "#" + page._id;
      return (
        <Page page={page}
          linkTo={pageId}
          key={page._id}
          excludePathString={excludePathString}
          >
          { this.state.deletionMode &&
            <input type="checkbox" className="search-result-list-delete-checkbox"
              value={pageId}
              checked={this.state.selectedPages.has(page)}
              onClick={() => this.toggleCheckbox(page)} />
            }
          <div className="page-list-option">
            <a href={page.path}><i className="fa fa-sign-in" /></a>
          </div>
        </Page>
      );
    });

    // TODO あとでなんとかする
    setTimeout(() => {
      $('#search-result-list > nav').affix({ offset: { top: 120 }});
    }, 1200);

    /*
    UI あとで考える
    <span className="search-result-meta">Found: {this.props.searchResultMeta.total} pages with "{this.props.searchingKeyword}"</span>
    */
    return (
      <div className="content-main">
        <div className="search-result row" id="search-result">
          <div className="col-md-4 hidden-xs hidden-sm page-list search-result-list" id="search-result-list">
            <nav data-spy="affix" data-offset-top="120">
              <div className="pull-right">
                {deletionModeButtons}
                {allSelectCheck}
              </div>
              <div className="search-result-meta">
                <i className="fa fa-lightbulb-o" /> Found {this.props.searchResultMeta.total} pages with "{this.props.searchingKeyword}"
              </div>
              <div className="clearfix"></div>
              <ul className="page-list-ul page-list-ul-flat nav">
                {listView}
              </ul>
            </nav>
          </div>
          <div className="col-md-8 search-result-content" id="search-result-content">
            <SearchResultList
              pages={this.props.pages}
              searchingKeyword={this.props.searchingKeyword}
              />
          </div>
        </div>
        <DeletePageListModal
          isShown={this.state.isDeleteConfirmModalShown}
          pages={Array.from(this.state.selectedPages)}
          errorMessage={this.state.errorMessageForDeleting}
          cancel={this.closeDeleteConfirmModal}
          confirmedToDelete={this.deleteSelectedPages}
          toggleDeleteCompletely={this.toggleDeleteCompletely}
        />

      </div>//content-main
    );
  }
}

SearchResult.propTypes = {
  tree: PropTypes.string.isRequired,
  pages: PropTypes.array.isRequired,
  searchingKeyword: PropTypes.string.isRequired,
  searchResultMeta: PropTypes.object.isRequired,
  crowi: PropTypes.object.isRequired,
};
SearchResult.defaultProps = {
  tree: '',
  pages: [],
  searchingKeyword: '',
  searchResultMeta: {},
  searchError: null,
};