mirror of https://github.com/zulip/zulip.git
47 lines
1.6 KiB
JavaScript
47 lines
1.6 KiB
JavaScript
var recent_senders = (function () {
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var exports = {};
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var senders = new Dict(); // key is stream-id, value is Dict
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exports.process_message_for_senders = function (message) {
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var stream_id = message.stream_id.toString();
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var topic_dict = senders.get(stream_id) || new Dict({fold_case: true});
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var sender_timestamps = topic_dict.get(message.subject) || new Dict();
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var old_timestamp = sender_timestamps.get(message.sender_id);
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if (old_timestamp === undefined || old_timestamp < message.timestamp) {
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sender_timestamps.set(message.sender_id, message.timestamp);
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}
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topic_dict.set(message.subject, sender_timestamps);
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senders.set(stream_id, topic_dict);
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};
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exports.compare_by_recency = function (user_a, user_b, stream_id, topic) {
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stream_id = stream_id.toString();
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var topic_dict = senders.get(stream_id);
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if (topic !== undefined && topic_dict !== undefined) {
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var sender_timestamps = topic_dict.get(topic);
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if (sender_timestamps !== undefined) {
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var b_timestamp = sender_timestamps.get(user_b.user_id) || Number.NEGATIVE_INFINITY;
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var a_timestamp = sender_timestamps.get(user_a.user_id) || Number.NEGATIVE_INFINITY;
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return b_timestamp - a_timestamp;
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}
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}
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// TODO: We should also compare by stream (and maybe also by
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// overall message recency in the realm) in the common case where
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// there's no traffic on the current topic from this user.
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return 0;
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};
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return exports;
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}());
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if (typeof module !== 'undefined') {
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module.exports = recent_senders;
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}
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