// @flow
import * as React from 'react';
import compose from 'recompose/compose';
import { connect } from 'react-redux';
import { withRouter } from 'react-router';
import { Link } from 'react-router-dom';
import editChannelMutation from 'shared/graphql/mutations/channel/editChannel';
import type { EditChannelType } from 'shared/graphql/mutations/channel/editChannel';
import type { GetChannelType } from 'shared/graphql/queries/channel/getChannel';
import deleteChannelMutation from 'shared/graphql/mutations/channel/deleteChannel';
import { openModal } from 'src/actions/modals';
import Tooltip from 'src/components/tooltip';
import { addToastWithTimeout } from 'src/actions/toasts';
import { Notice } from 'src/components/listItems/style';
import { PrimaryOutlineButton } from 'src/components/button';
import Icon from 'src/components/icon';
import { NullCard } from 'src/components/upsell';
import {
  Input,
  UnderlineInput,
  TextArea,
  Error,
} from 'src/components/formElements';
import { SectionCard, SectionTitle } from 'src/components/settingsViews/style';
import {
  whiteSpaceRegex,
  oddHyphenRegex,
} from 'src/views/viewHelpers/textValidationHelper';
import {
  Form,
  TertiaryActionContainer,
  Description,
  Actions,
  GeneralNotice,
  Location,
} from 'src/components/editForm/style';
import type { Dispatch } from 'redux';

type State = {
  name: string,
  nameError: boolean,
  slug: string,
  description: ?string,
  descriptionError: boolean,
  isPrivate: boolean,
  channelId: string,
  channelData: Object,
  isLoading: boolean,
};

type Props = {
  editChannel: Function,
  dispatch: Dispatch<Object>,
  channel: GetChannelType,
};
class ChannelWithData extends React.Component<Props, State> {
  constructor(props) {
    super(props);

    const { channel } = this.props;

    this.state = {
      name: channel.name,
      nameError: false,
      slug: channel.slug,
      description: channel.description,
      descriptionError: false,
      isPrivate: channel.isPrivate || false,
      channelId: channel.id,
      channelData: channel,
      isLoading: false,
    };
  }

  handleChange = e => {
    const key = e.target.id;
    const value = e.target.value;
    const { isPrivate } = this.state;

    const newState = {};
    // checkboxes should reverse the value
    if (key === 'isPrivate') {
      newState[key] = !isPrivate;
    } else {
      newState[key] = value;

      let hasInvalidChars = value.search(whiteSpaceRegex) >= 0;
      let hasOddHyphens = value.search(oddHyphenRegex) >= 0;
      this.updateStateOnError(newState, key, hasInvalidChars || hasOddHyphens);
    }

    this.setState(prevState => {
      return Object.assign({}, prevState, {
        ...newState,
      });
    });
  };

  updateStateOnError(state, key, setError) {
    if (key === 'name') {
      state['nameError'] = setError;
    } else {
      state['descriptionError'] = setError;
    }
  }

  save = e => {
    e.preventDefault();
    const { name, slug, description, isPrivate, channelId } = this.state;
    const input = {
      name,
      slug,
      description,
      isPrivate,
      channelId,
    };

    this.setState({
      isLoading: true,
    });

    // if privacy changed in this edit
    if (this.props.channel.isPrivate !== isPrivate) {
    }

    this.props
      .editChannel(input)
      .then(({ data }: EditChannelType) => {
        const { editChannel: channel } = data;

        this.setState({
          isLoading: false,
        });

        // the mutation returns a channel object. if it exists,
        if (channel !== undefined) {
          this.props.dispatch(addToastWithTimeout('success', 'Channel saved!'));
        }
        return;
      })
      .catch(err => {
        this.setState({
          isLoading: false,
        });

        this.props.dispatch(addToastWithTimeout('error', err.message));
      });
  };

  triggerDeleteChannel = (e, channelId) => {
    e.preventDefault();
    const { name, channelData } = this.state;
    const message = (
      <div>
        <p>
          Are you sure you want to delete{' '}
          <b>
            {channelData.community.name}/{name}
          </b>
          ?
        </p>
        <p>All conversations posted in this channel will be deleted.</p>
        <p>
          All messages, reactions, and media shared in this channel will be
          deleted.
        </p>
        <p>
          <b>This cannot be undone.</b>
        </p>
      </div>
    );

    return this.props.dispatch(
      openModal('DELETE_DOUBLE_CHECK_MODAL', {
        id: channelId,
        entity: 'channel',
        message,
        redirect: `/${channelData.community.slug}`,
      })
    );
  };

  render() {
    const {
      name,
      nameError,
      slug,
      description,
      descriptionError,
      isPrivate,
      isLoading,
    } = this.state;
    const { channel } = this.props;

    if (!channel) {
      return (
        <NullCard
          bg="channel"
          heading={"This channel doesn't exist yet."}
          copy={'Want to make it?'}
        >
          {/* TODO: wire up button */}
          <PrimaryOutlineButton>Create</PrimaryOutlineButton>
        </NullCard>
      );
    } else {
      return (
        <SectionCard>
          <Location>
            <Link to={`/${channel.community.slug}/${channel.slug}`}>
              View Channel
            </Link>
          </Location>
          <SectionTitle>Channel Settings</SectionTitle>
          <Form onSubmit={this.save}>
            <Input
              defaultValue={name}
              id="name"
              onChange={this.handleChange}
              dataCy="channel-name-input"
            >
              Name
            </Input>
            {nameError && (
              <Error>Channel name can`t have invalid characters.</Error>
            )}
            <UnderlineInput defaultValue={slug} disabled>
              {`URL: /${channel.community.slug}/`}
            </UnderlineInput>
            <TextArea
              id="description"
              defaultValue={description}
              onChange={this.handleChange}
              dataCy="channel-description-input"
            >
              Description
            </TextArea>
            {descriptionError && (
              <Error>
                Oops, there may be some invalid characters - try fixing that up.
              </Error>
            )}
            {/* {slug !== 'general' &&
              <Checkbox
                id="isPrivate"
                checked={isPrivate}
                onChange={this.handleChange}
              >
                Private channel
              </Checkbox>} */}
            {isPrivate ? (
              <Description>
                Only channel members can see the threads, messages, and members
                in this channel. You can manually approve users who request to
                join this channel.
              </Description>
            ) : channel.community.isPrivate ? (
              <Description>
                Members in your private community will be able to join this
                channel, post threads and messages, and will be able to see
                other members.
              </Description>
            ) : (
              <Description>
                Anyone on Spectrum can join this channel, post threads and
                messages, and will be able to see other members.
              </Description>
            )}

            {// if the user is moving from private to public
            this.props.channel.isPrivate && !isPrivate && (
              <Notice>
                When a private channel is made public all pending users will be
                added as members of the channel. Blocked users will remain
                blocked from viewing all content in this channel but in the
                future any new person will be able to join.
              </Notice>
            )}

            <Actions>
              <PrimaryOutlineButton
                onClick={this.save}
                disabled={nameError || descriptionError}
                loading={isLoading}
                data-cy="save-button"
              >
                {isLoading ? 'Saving...' : 'Save'}
              </PrimaryOutlineButton>
              {slug !== 'general' && (
                <TertiaryActionContainer>
                  <Tooltip content={`Delete ${name}`}>
                    <span>
                      <Icon
                        glyph="delete"
                        color="text.placeholder"
                        hoverColor="warn.alt"
                        onClick={e => this.triggerDeleteChannel(e, channel.id)}
                        data-cy="delete-channel-button"
                      />
                    </span>
                  </Tooltip>
                </TertiaryActionContainer>
              )}
            </Actions>

            {slug === 'general' && (
              <GeneralNotice>
                The General channel is the default channel for your community.
                It can’t be deleted or private, but you can still change the
                name and description.
              </GeneralNotice>
            )}
          </Form>
        </SectionCard>
      );
    }
  }
}

const Channel = compose(
  deleteChannelMutation,
  editChannelMutation,
  withRouter
)(ChannelWithData);
export default connect()(Channel);