90 lines
2.9 KiB
TypeScript
90 lines
2.9 KiB
TypeScript
import { StorageAdapter } from "./types";
|
|
|
|
export class IndexedDBAdapter<T> implements StorageAdapter<T> {
|
|
private dbName: string;
|
|
private storeName: string;
|
|
private version: number;
|
|
|
|
constructor(dbName: string, storeName: string, version = 1) {
|
|
this.dbName = dbName;
|
|
this.storeName = storeName;
|
|
this.version = version;
|
|
}
|
|
|
|
private async getDB(): Promise<IDBDatabase> {
|
|
return new Promise((resolve, reject) => {
|
|
const request = indexedDB.open(this.dbName, this.version);
|
|
|
|
request.onerror = () => reject(request.error);
|
|
request.onsuccess = () => resolve(request.result);
|
|
|
|
request.onupgradeneeded = (event) => {
|
|
const db = (event.target as IDBOpenDBRequest).result;
|
|
if (!db.objectStoreNames.contains(this.storeName)) {
|
|
db.createObjectStore(this.storeName, { keyPath: "id" });
|
|
}
|
|
};
|
|
});
|
|
}
|
|
|
|
async get(key: string): Promise<T | null> {
|
|
const db = await this.getDB();
|
|
const transaction = db.transaction([this.storeName], "readonly");
|
|
const store = transaction.objectStore(this.storeName);
|
|
|
|
return new Promise((resolve, reject) => {
|
|
const request = store.get(key);
|
|
request.onerror = () => reject(request.error);
|
|
request.onsuccess = () => resolve(request.result || null);
|
|
});
|
|
}
|
|
|
|
async set(key: string, value: T): Promise<void> {
|
|
const db = await this.getDB();
|
|
const transaction = db.transaction([this.storeName], "readwrite");
|
|
const store = transaction.objectStore(this.storeName);
|
|
|
|
return new Promise((resolve, reject) => {
|
|
const request = store.put({ id: key, ...value });
|
|
request.onerror = () => reject(request.error);
|
|
request.onsuccess = () => resolve();
|
|
});
|
|
}
|
|
|
|
async remove(key: string): Promise<void> {
|
|
const db = await this.getDB();
|
|
const transaction = db.transaction([this.storeName], "readwrite");
|
|
const store = transaction.objectStore(this.storeName);
|
|
|
|
return new Promise((resolve, reject) => {
|
|
const request = store.delete(key);
|
|
request.onerror = () => reject(request.error);
|
|
request.onsuccess = () => resolve();
|
|
});
|
|
}
|
|
|
|
async list(): Promise<string[]> {
|
|
const db = await this.getDB();
|
|
const transaction = db.transaction([this.storeName], "readonly");
|
|
const store = transaction.objectStore(this.storeName);
|
|
|
|
return new Promise((resolve, reject) => {
|
|
const request = store.getAllKeys();
|
|
request.onerror = () => reject(request.error);
|
|
request.onsuccess = () => resolve(request.result as string[]);
|
|
});
|
|
}
|
|
|
|
async clear(): Promise<void> {
|
|
const db = await this.getDB();
|
|
const transaction = db.transaction([this.storeName], "readwrite");
|
|
const store = transaction.objectStore(this.storeName);
|
|
|
|
return new Promise((resolve, reject) => {
|
|
const request = store.clear();
|
|
request.onerror = () => reject(request.error);
|
|
request.onsuccess = () => resolve();
|
|
});
|
|
}
|
|
}
|