mirror of https://github.com/zulip/zulip.git
stream_topic_history: Convert per_stream_history to an ES6 class.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This commit is contained in:
Anders Kaseorg
Tim Abbott
parent
e47fd521e3
commit
2bf6731f5a
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@ -1,6 +1,6 @@
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const FoldDict = require("./fold_dict").FoldDict;
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const stream_dict = new Map(); // stream_id -> per_stream_history object
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const stream_dict = new Map(); // stream_id -> PerStreamHistory object
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const fetched_stream_ids = new Set();
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exports.is_complete_for_stream_id = (stream_id) => {
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@ -42,7 +42,7 @@ exports.stream_has_topics = function (stream_id) {
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return history.has_topics();
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};
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exports.per_stream_history = function (stream_id) {
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class PerStreamHistory {
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/*
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For a given stream, this structure has a dictionary of topics.
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The main getter of this object is get_recent_topic_names, and
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@ -72,32 +72,35 @@ exports.per_stream_history = function (stream_id) {
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deleted.
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*/
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const topics = new FoldDict();
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topics = new FoldDict();
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// Most recent message ID for the stream.
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let max_message_id = 0;
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const self = {};
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max_message_id = 0;
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self.has_topics = function () {
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return topics.size !== 0;
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};
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self.update_stream_max_message_id = function (message_id) {
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if (message_id > max_message_id) {
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max_message_id = message_id;
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constructor(stream_id) {
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this.stream_id = stream_id;
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}
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};
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self.add_or_update = function (opts) {
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has_topics() {
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return this.topics.size !== 0;
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}
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update_stream_max_message_id(message_id) {
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if (message_id > this.max_message_id) {
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this.max_message_id = message_id;
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}
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}
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add_or_update(opts) {
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const topic_name = opts.topic_name;
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let message_id = opts.message_id || 0;
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message_id = parseInt(message_id, 10);
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self.update_stream_max_message_id(message_id);
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this.update_stream_max_message_id(message_id);
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const existing = topics.get(topic_name);
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const existing = this.topics.get(topic_name);
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if (!existing) {
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topics.set(opts.topic_name, {
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this.topics.set(opts.topic_name, {
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message_id,
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pretty_name: topic_name,
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historical: false,
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@ -114,10 +117,10 @@ exports.per_stream_history = function (stream_id) {
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existing.message_id = message_id;
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existing.pretty_name = topic_name;
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}
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};
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}
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self.maybe_remove = function (topic_name, num_messages) {
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const existing = topics.get(topic_name);
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maybe_remove(topic_name, num_messages) {
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const existing = this.topics.get(topic_name);
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if (!existing) {
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return;
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@ -131,14 +134,14 @@ exports.per_stream_history = function (stream_id) {
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}
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if (existing.count <= num_messages) {
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topics.delete(topic_name);
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this.topics.delete(topic_name);
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return;
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}
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existing.count -= num_messages;
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};
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}
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self.add_history = function (server_history) {
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add_history(server_history) {
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// This method populates historical topics from the
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// server. We have less data about these than the
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// client can maintain for newer topics.
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@ -147,7 +150,7 @@ exports.per_stream_history = function (stream_id) {
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const topic_name = obj.name;
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const message_id = obj.max_id;
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const existing = topics.get(topic_name);
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const existing = this.topics.get(topic_name);
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if (existing) {
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if (!existing.historical) {
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@ -161,21 +164,21 @@ exports.per_stream_history = function (stream_id) {
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// the topic for the first time, or we are getting
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// more current data for it.
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topics.set(topic_name, {
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this.topics.set(topic_name, {
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message_id,
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pretty_name: topic_name,
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historical: true,
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});
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self.update_stream_max_message_id(message_id);
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this.update_stream_max_message_id(message_id);
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}
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}
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};
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self.get_recent_topic_names = function () {
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const my_recents = Array.from(topics.values());
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get_recent_topic_names() {
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const my_recents = Array.from(this.topics.values());
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const missing_topics = unread.get_missing_topics({
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stream_id,
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topic_dict: topics,
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stream_id: this.stream_id,
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topic_dict: this.topics,
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});
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const recents = my_recents.concat(missing_topics);
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@ -185,14 +188,13 @@ exports.per_stream_history = function (stream_id) {
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const names = recents.map((obj) => obj.pretty_name);
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return names;
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};
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}
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self.get_max_message_id = function () {
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return max_message_id;
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};
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return self;
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};
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get_max_message_id() {
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return this.max_message_id;
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}
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}
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exports.PerStreamHistory = PerStreamHistory;
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exports.remove_messages = function (opts) {
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const stream_id = opts.stream_id;
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@ -215,7 +217,7 @@ exports.find_or_create = function (stream_id) {
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let history = stream_dict.get(stream_id);
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if (!history) {
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history = exports.per_stream_history(stream_id);
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history = new PerStreamHistory(stream_id);
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stream_dict.set(stream_id, history);
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}
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