stream-chat-react-native-core/lib/commonjs/components/ChannelPreview/hooks/useChannelTypingState.js

The official React Native and Expo components for Stream Chat, a service for building chat applications

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useChannelTypingState = void 0;
var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
var _react = require("react");
var _ChatContext = require("../../../contexts/chatContext/ChatContext");
var useChannelTypingState = ({
  channel
}) => {
  var _client$user2, _client$user4;
  var _useChatContext = (0, _ChatContext.useChatContext)(),
    client = _useChatContext.client;
  var _useState = (0, _react.useState)([]),
    _useState2 = (0, _slicedToArray2.default)(_useState, 2),
    usersTyping = _useState2[0],
    setUsersTyping = _useState2[1];
  var handleTypingStart = (0, _react.useCallback)(event => {
    var _event$user, _client$user;
    if (channel.cid !== event.cid || ((_event$user = event.user) == null ? void 0 : _event$user.id) === (client == null || (_client$user = client.user) == null ? void 0 : _client$user.id)) return;
    setUsersTyping(prev => {
      if (!event.user) return prev;
      if (prev.some(user => {
        var _event$user2;
        return user.id === ((_event$user2 = event.user) == null ? void 0 : _event$user2.id);
      })) return prev;
      return [...prev, event.user];
    });
  }, [channel.cid, client == null || (_client$user2 = client.user) == null ? void 0 : _client$user2.id]);
  var handleTypingStop = (0, _react.useCallback)(event => {
    var _event$user3, _client$user3;
    if (channel.cid !== event.cid || ((_event$user3 = event.user) == null ? void 0 : _event$user3.id) === (client == null || (_client$user3 = client.user) == null ? void 0 : _client$user3.id)) return;
    setUsersTyping(prev => prev.filter(user => {
      var _event$user4;
      return user.id !== ((_event$user4 = event.user) == null ? void 0 : _event$user4.id);
    }));
  }, [channel.cid, client == null || (_client$user4 = client.user) == null ? void 0 : _client$user4.id]);
  (0, _react.useEffect)(() => {
    var listeners = [channel.on('typing.start', handleTypingStart), channel.on('typing.stop', handleTypingStop)];
    return () => {
      listeners.forEach(listener => listener.unsubscribe());
    };
  }, [channel, handleTypingStart, handleTypingStop]);
  return {
    usersTyping
  };
};
exports.useChannelTypingState = useChannelTypingState;
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