// @flow
import * as React from 'react';
import styled from 'styled-components';
import { inject, observer } from 'mobx-react';
import { observable } from 'mobx';
import { debounce } from 'lodash';
import Button from 'components/Button';
import Flex from 'shared/components/Flex';
import HelpText from 'components/HelpText';
import Input from 'components/Input';
import Modal from 'components/Modal';
import Empty from 'components/Empty';
import PaginatedList from 'components/PaginatedList';
import GroupNew from 'scenes/GroupNew';
import Collection from 'models/Collection';
import UiStore from 'stores/UiStore';
import AuthStore from 'stores/AuthStore';
import GroupsStore from 'stores/GroupsStore';
import CollectionGroupMembershipsStore from 'stores/CollectionGroupMembershipsStore';
import GroupListItem from 'components/GroupListItem';

type Props = {
  ui: UiStore,
  auth: AuthStore,
  collection: Collection,
  collectionGroupMemberships: CollectionGroupMembershipsStore,
  groups: GroupsStore,
  onSubmit: () => void,
};

@observer
class AddGroupsToCollection extends React.Component<Props> {
  @observable newGroupModalOpen: boolean = false;
  @observable query: string = '';

  handleNewGroupModalOpen = () => {
    this.newGroupModalOpen = true;
  };

  handleNewGroupModalClose = () => {
    this.newGroupModalOpen = false;
  };

  handleFilter = (ev: SyntheticInputEvent<HTMLInputElement>) => {
    this.query = ev.target.value;
    this.debouncedFetch();
  };

  debouncedFetch = debounce(() => {
    this.props.groups.fetchPage({
      query: this.query,
    });
  }, 250);

  handleAddGroup = group => {
    try {
      this.props.collectionGroupMemberships.create({
        collectionId: this.props.collection.id,
        groupId: group.id,
        permission: 'read_write',
      });
      this.props.ui.showToast(`${group.name} was added to the collection`);
    } catch (err) {
      this.props.ui.showToast('Could not add user');
      console.error(err);
    }
  };

  render() {
    const { groups, collection, auth } = this.props;
    const { user, team } = auth;
    if (!user || !team) return null;

    return (
      <Flex column>
        <HelpText>
          Can’t find the group you’re looking for?{' '}
          <a role="button" onClick={this.handleNewGroupModalOpen}>
            Create a group
          </a>.
        </HelpText>

        <Input
          type="search"
          placeholder="Search by group name…"
          value={this.query}
          onChange={this.handleFilter}
          label="Search groups"
          labelHidden
          flex
        />
        <PaginatedList
          empty={
            this.query ? (
              <Empty>No groups matching your search</Empty>
            ) : (
              <Empty>No groups left to add</Empty>
            )
          }
          items={groups.notInCollection(collection.id, this.query)}
          fetch={this.query ? undefined : groups.fetchPage}
          renderItem={item => (
            <GroupListItem
              key={item.id}
              group={item}
              showFacepile
              renderActions={() => (
                <ButtonWrap>
                  <Button onClick={() => this.handleAddGroup(item)} neutral>
                    Add
                  </Button>
                </ButtonWrap>
              )}
            />
          )}
        />
        <Modal
          title="Create a group"
          onRequestClose={this.handleNewGroupModalClose}
          isOpen={this.newGroupModalOpen}
        >
          <GroupNew onSubmit={this.handleNewGroupModalClose} />
        </Modal>
      </Flex>
    );
  }
}

const ButtonWrap = styled.div`
  margin-left: 6px;
`;

export default inject('auth', 'groups', 'collectionGroupMemberships', 'ui')(
  AddGroupsToCollection
);