mirror of https://github.com/zulip/zulip.git
64 lines
2.1 KiB
JavaScript
64 lines
2.1 KiB
JavaScript
import * as people from "./people";
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import {get_topic_key} from "./recent_topics_util";
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export const topics = new Map(); // Key is stream-id:topic.
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export function process_message(msg) {
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// This function returns if topic_data
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// has changed or not.
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if (msg.type !== "stream") {
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// We don't process private messages yet.
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return false;
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}
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// Initialize topic data
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const key = get_topic_key(msg.stream_id, msg.topic);
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if (!topics.has(key)) {
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topics.set(key, {
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last_msg_id: -1,
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participated: false,
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});
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}
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// Update topic data
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const is_ours = people.is_my_user_id(msg.sender_id);
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const topic_data = topics.get(key);
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if (topic_data.last_msg_id < msg.id) {
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// NOTE: This also stores locally echoed msg_id which
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// has not been successfully received from the server.
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// We store it now and reify it when response is available
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// from server.
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topic_data.last_msg_id = msg.id;
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}
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// TODO: Add backend support for participated topics.
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// Currently participated === recently participated
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// i.e. Only those topics are participated for which we have the user's
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// message fetched in the topic. Ideally we would want this to be attached
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// to topic info fetched from backend, which is currently not a thing.
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topic_data.participated = is_ours || topic_data.participated;
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return true;
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}
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function get_sorted_topics() {
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// Sort all recent topics by last message time.
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return new Map(
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Array.from(topics.entries()).sort((a, b) => b[1].last_msg_id - a[1].last_msg_id),
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);
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}
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export function get() {
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return get_sorted_topics();
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}
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export function reify_message_id_if_available(opts) {
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// We don't need to reify the message_id of the topic
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// if a new message arrives in the topic from another user,
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// since it replaces the last_msg_id of the topic which
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// we were trying to reify.
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for (const [, value] of topics.entries()) {
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if (value.last_msg_id === opts.old_id) {
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value.last_msg_id = opts.new_id;
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return true;
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}
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}
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return false;
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}
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