Spaces:
Running
Running
File size: 2,572 Bytes
cd23862 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 |
import { Platform } from "react-native";
import * as SQLite from 'expo-sqlite';
const DATABASE_NAME = 'CoverStorageDB'
class CoverStorage_Web {
private static dbPromise: Promise<IDBDatabase>;
private static getDB(): Promise<IDBDatabase> {
if (!this.dbPromise) {
this.dbPromise = new Promise((resolve, reject) => {
const request = indexedDB.open(DATABASE_NAME, 2);
request.onupgradeneeded = (event) => {
const db = (event.target as IDBOpenDBRequest).result;
if (db.objectStoreNames.contains('dataStore')) db.deleteObjectStore('dataStore');
db.createObjectStore('dataStore');
};
request.onsuccess = () => {
resolve(request.result);
};
request.onerror = () => {
reject(request.error);
};
});
}
return this.dbPromise;
}
static async store(id: string, value: any): Promise<void> {
const db = await this.getDB();
return new Promise((resolve, reject) => {
const transaction = db.transaction('dataStore', 'readwrite');
const store = transaction.objectStore('dataStore');
const request = store.put(value, id);
request.onsuccess = () => {
resolve();
};
request.onerror = () => {
reject(request.error);
};
});
}
static async get(id: string): Promise<any> {
const db = await this.getDB();
return new Promise((resolve, reject) => {
const transaction = db.transaction('dataStore', 'readonly');
const store = transaction.objectStore('dataStore');
const request = store.get(id);
request.onsuccess = () => {
resolve(request.result);
};
request.onerror = () => {
reject(request.error);
};
});
}
static async remove(id: string): Promise<void> {
const db = await this.getDB();
return new Promise((resolve, reject) => {
const transaction = db.transaction('dataStore', 'readwrite');
const store = transaction.objectStore('dataStore');
const request = store.delete(id);
request.onsuccess = () => {
resolve();
};
request.onerror = () => {
reject(request.error);
};
});
}
}
var CoverStorage:any
if (Platform.OS === "web") {
CoverStorage = CoverStorage_Web;
}
export default CoverStorage
|