93 lines
2.8 KiB
TypeScript
93 lines
2.8 KiB
TypeScript
/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/* Simple wrapper around IndexedDB.
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*/
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let idb = null;
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async function idbInit(): Promise<void> {
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idb = await new Promise((resolve, reject) => {
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const request = window.indexedDB.open("element", 1);
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request.onerror = reject;
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// eslint-disable-next-line @typescript-eslint/ban-ts-comment
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// @ts-ignore: TS thinks target.result doesn't exist
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request.onsuccess = (event) => { resolve(event.target.result); };
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request.onupgradeneeded = (event) => {
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// eslint-disable-next-line @typescript-eslint/ban-ts-comment
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// @ts-ignore: TS thinks target.result doesn't exist
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const db = event.target.result;
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db.createObjectStore("pickleKey");
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db.createObjectStore("account");
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};
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});
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}
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export async function idbLoad(
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table: string,
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key: string | string[],
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): Promise<any> {
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if (!idb) {
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await idbInit();
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}
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return new Promise((resolve, reject) => {
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const txn = idb.transaction([table], "readonly");
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txn.onerror = reject;
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const objectStore = txn.objectStore(table);
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const request = objectStore.get(key);
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request.onerror = reject;
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request.onsuccess = (event) => { resolve(request.result); };
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});
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}
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export async function idbSave(
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table: string,
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key: string | string[],
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data: any,
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): Promise<void> {
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if (!idb) {
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await idbInit();
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}
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return new Promise((resolve, reject) => {
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const txn = idb.transaction([table], "readwrite");
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txn.onerror = reject;
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const objectStore = txn.objectStore(table);
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const request = objectStore.put(data, key);
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request.onerror = reject;
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request.onsuccess = (event) => { resolve(); };
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});
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}
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export async function idbDelete(
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table: string,
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key: string | string[],
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): Promise<void> {
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if (!idb) {
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await idbInit();
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}
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return new Promise((resolve, reject) => {
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const txn = idb.transaction([table], "readwrite");
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txn.onerror = reject;
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const objectStore = txn.objectStore(table);
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const request = objectStore.delete(key);
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request.onerror = reject;
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request.onsuccess = (event) => { resolve(); };
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});
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}
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