39 lines
1.6 KiB
JavaScript
39 lines
1.6 KiB
JavaScript
import {openDatabase, select} from "./utils";
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function createSessionsStore(db) {
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db.createObjectStore("sessions", "id");
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}
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function createStores(db) {
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db.createObjectStore("sync"); //sync token
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db.createObjectStore("summary", "room_id");
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const timeline = db.createObjectStore("timeline", ["room_id", "event_id"]);
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timeline.createIndex("by_sort_key", ["room_id", "sort_key"], {unique: true});
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// how to get the first/last x events for a room?
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// we don't want to specify the sort key, but would need an index for the room_id?
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// take sort_key as primary key then and have index on event_id?
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// still, you also can't have a PK of [room_id, sort_key] and get the last or first events with just the room_id? the only thing that changes it that the PK will provide an inherent sorting that you inherit in an index that only has room_id as keyPath??? There must be a better way, need to write a prototype test for this.
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// SOLUTION: with numeric keys, you can just us a min/max value to get first/last
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db.createObjectStore("members", ["room_id", "state_key"]);
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const state = db.createObjectStore("state", ["room_id", "type", "state_key"]);
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}
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class Sessions {
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constructor(databaseName, idToSessionDbName) {
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this._databaseName = databaseName;
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this._idToSessionDbName = idToSessionDbName;
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}
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async getSessions(sessionsDbName) {
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const db = await openDatabase(this._databaseName, db => createSessionsStore(db));
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const sessions = await select(db, "sessions");
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db.close();
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return sessions;
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}
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async openSessionStore(session) {
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const db = await openDatabase(this._idToSessionDbName(session.id), db => createStores(db));
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return new SessionStore(db);
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}
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}
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