import PropTypes from "prop-types";

import { FormattedMessage } from "react-intl";

import { List as ImmutableList } from "immutable";
import ImmutablePropTypes from "react-immutable-proptypes";
import ImmutablePureComponent from "react-immutable-pure-component";
import { connect } from "react-redux";

import { TimelineHint } from "mastodon/components/timeline_hint";
import BundleColumnError from "mastodon/features/ui/components/bundle_column_error";
import { me } from "mastodon/initial_state";
import { normalizeForLookup } from "mastodon/reducers/accounts_map";
import { getAccountHidden } from "mastodon/selectors";

import { lookupAccount, fetchAccount } from "../../actions/accounts";
import { fetchFeaturedTags } from "../../actions/featured_tags";
import { expandAccountFeaturedTimeline, expandAccountTimeline, connectTimeline, disconnectTimeline } from "../../actions/timelines";
import ColumnBackButton from "../../components/column_back_button";
import { LoadingIndicator } from "../../components/loading_indicator";
import StatusList from "../../components/status_list";
import Column from "../ui/components/column";

import LimitedAccountHint from "./components/limited_account_hint";
import HeaderContainer from "./containers/header_container";

const emptyList = ImmutableList();

const mapStateToProps = (state, { params: { acct, id, tagged }, withReplies = false }) => {
  const accountId = id || state.getIn(["accounts_map", normalizeForLookup(acct)]);

  if (accountId === null) {
    return {
      isLoading: false,
      isAccount: false,
      statusIds: emptyList,
    };
  } else if (!accountId) {
    return {
      isLoading: true,
      statusIds: emptyList,
    };
  }

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

  return {
    accountId,
    remote: !!(state.getIn(["accounts", accountId, "acct"]) !== state.getIn(["accounts", accountId, "username"])),
    remoteUrl: state.getIn(["accounts", accountId, "url"]),
    isAccount: !!state.getIn(["accounts", accountId]),
    statusIds: state.getIn(["timelines", `account:${path}`, "items"], emptyList),
    featuredStatusIds: withReplies ? ImmutableList() : state.getIn(["timelines", `account:${accountId}:pinned${tagged ? `:${tagged}` : ""}`, "items"], emptyList),
    isLoading: state.getIn(["timelines", `account:${path}`, "isLoading"]),
    hasMore: state.getIn(["timelines", `account:${path}`, "hasMore"]),
    suspended: state.getIn(["accounts", accountId, "suspended"], false),
    hidden: getAccountHidden(state, accountId),
    blockedBy: state.getIn(["relationships", accountId, "blocked_by"], false),
  };
};

const RemoteHint = ({ url }) => (
  <TimelineHint url={url} resource={<FormattedMessage id='timeline_hint.resources.statuses' defaultMessage='Older posts' />} />
);

RemoteHint.propTypes = {
  url: PropTypes.string.isRequired,
};

class AccountTimeline extends ImmutablePureComponent {

  static propTypes = {
    params: PropTypes.shape({
      acct: PropTypes.string,
      id: PropTypes.string,
      tagged: PropTypes.string,
    }).isRequired,
    accountId: PropTypes.string,
    dispatch: PropTypes.func.isRequired,
    statusIds: ImmutablePropTypes.list,
    featuredStatusIds: ImmutablePropTypes.list,
    isLoading: PropTypes.bool,
    hasMore: PropTypes.bool,
    withReplies: PropTypes.bool,
    blockedBy: PropTypes.bool,
    isAccount: PropTypes.bool,
    suspended: PropTypes.bool,
    hidden: PropTypes.bool,
    remote: PropTypes.bool,
    remoteUrl: PropTypes.string,
    multiColumn: PropTypes.bool,
  };

  _load () {
    const { accountId, withReplies, params: { tagged }, dispatch } = this.props;

    dispatch(fetchAccount(accountId));

    if (!withReplies) {
      dispatch(expandAccountFeaturedTimeline(accountId, { tagged }));
    }

    dispatch(fetchFeaturedTags(accountId));
    dispatch(expandAccountTimeline(accountId, { withReplies, tagged }));

    if (accountId === me) {
      dispatch(connectTimeline(`account:${me}`));
    }
  }

  componentDidMount () {
    const { params: { acct }, accountId, dispatch } = this.props;

    if (accountId) {
      this._load();
    } else {
      dispatch(lookupAccount(acct));
    }
  }

  componentDidUpdate (prevProps) {
    const { params: { acct, tagged }, accountId, withReplies, dispatch } = this.props;

    if (prevProps.accountId !== accountId && accountId) {
      this._load();
    } else if (prevProps.params.acct !== acct) {
      dispatch(lookupAccount(acct));
    } else if (prevProps.params.tagged !== tagged) {
      if (!withReplies) {
        dispatch(expandAccountFeaturedTimeline(accountId, { tagged }));
      }
      dispatch(expandAccountTimeline(accountId, { withReplies, tagged }));
    }

    if (prevProps.accountId === me && accountId !== me) {
      dispatch(disconnectTimeline(`account:${me}`));
    }
  }

  componentWillUnmount () {
    const { dispatch, accountId } = this.props;

    if (accountId === me) {
      dispatch(disconnectTimeline(`account:${me}`));
    }
  }

  handleLoadMore = maxId => {
    this.props.dispatch(expandAccountTimeline(this.props.accountId, { maxId, withReplies: this.props.withReplies, tagged: this.props.params.tagged }));
  };

  render () {
    const { accountId, statusIds, featuredStatusIds, isLoading, hasMore, blockedBy, suspended, isAccount, hidden, multiColumn, remote, remoteUrl } = this.props;

    if (isLoading && statusIds.isEmpty()) {
      return (
        <Column>
          <LoadingIndicator />
        </Column>
      );
    } else if (!isLoading && !isAccount) {
      return (
        <BundleColumnError multiColumn={multiColumn} errorType='routing' />
      );
    }

    let emptyMessage;

    const forceEmptyState = suspended || blockedBy || hidden;

    if (suspended) {
      emptyMessage = <FormattedMessage id='empty_column.account_suspended' defaultMessage='Account suspended' />;
    } else if (hidden) {
      emptyMessage = <LimitedAccountHint accountId={accountId} />;
    } else if (blockedBy) {
      emptyMessage = <FormattedMessage id='empty_column.account_unavailable' defaultMessage='Profile unavailable' />;
    } else if (remote && statusIds.isEmpty()) {
      emptyMessage = <RemoteHint url={remoteUrl} />;
    } else {
      emptyMessage = <FormattedMessage id='empty_column.account_timeline' defaultMessage='No posts found' />;
    }

    const remoteMessage = remote ? <RemoteHint url={remoteUrl} /> : null;

    return (
      <Column>
        <ColumnBackButton multiColumn={multiColumn} />

        <StatusList
          prepend={<HeaderContainer accountId={this.props.accountId} hideTabs={forceEmptyState} tagged={this.props.params.tagged} />}
          alwaysPrepend
          append={remoteMessage}
          scrollKey='account_timeline'
          statusIds={forceEmptyState ? emptyList : statusIds}
          featuredStatusIds={featuredStatusIds}
          isLoading={isLoading}
          hasMore={!forceEmptyState && hasMore}
          onLoadMore={this.handleLoadMore}
          emptyMessage={emptyMessage}
          bindToDocument={!multiColumn}
          timelineId='account'
        />
      </Column>
    );
  }

}

export default connect(mapStateToProps)(AccountTimeline);