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IndexedDBStorage.ts
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IndexedDBStorage.ts
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import { Storage, StorageKey, StorageKeyReturnType } from '@airgap/beacon-types'
import { Logger } from '@airgap/beacon-core'
const logger = new Logger('IndexedDBStorage')
export class IndexedDBStorage extends Storage {
private db: IDBDatabase | null = null
private isSupported: boolean = true
constructor(
private readonly dbName: string = 'WALLET_CONNECT_V2_INDEXED_DB',
private readonly storeName: string = 'keyvaluestorage'
) {
super()
this.initDB()
.then((db) => (this.db = db))
.catch((err) => logger.error(err.message))
}
private isIndexedDBSupported() {
if (typeof window !== 'undefined' && 'indexedDB' in window) {
logger.log('isIndexedDBSupported', 'IndexedDB is supported in this browser.')
return true
} else {
logger.error('isIndexedDBSupported', 'IndexedDB is not supported in this browser.')
return false
}
}
private async initDB(): Promise<IDBDatabase> {
return new Promise((resolve, reject) => {
this.isSupported = this.isIndexedDBSupported()
if (!this.isSupported) {
reject('IndexedDB is not supported.')
}
const request = indexedDB.open(this.dbName)
request.onupgradeneeded = (event) => {
const request = event.target as IDBOpenDBRequest
const db = request.result
if (!db.objectStoreNames.contains(this.storeName)) {
db.createObjectStore(this.storeName)
}
}
request.onsuccess = (event: any) => resolve(event.target.result)
request.onerror = (event: any) => reject(event.target.error)
})
}
private async transaction<T>(
mode: IDBTransactionMode,
operation: (store: IDBObjectStore) => Promise<T>
): Promise<T> {
return new Promise((resolve, reject) => {
if (!this.isSupported) {
reject('IndexedDB is not supported.')
}
if (!this.db?.objectStoreNames.contains(this.storeName)) {
reject(`${this.storeName} not found. error: ${new Error().stack}`)
}
const transaction = this.db?.transaction(this.storeName, mode)
const objectStore = transaction?.objectStore(this.storeName)
objectStore && operation(objectStore).then(resolve).catch(reject)
})
}
public get<K extends StorageKey>(key: K): Promise<StorageKeyReturnType[K]> {
return this.transaction(
'readonly',
(store) =>
new Promise((resolve, reject) => {
const getRequest = store.get(key)
getRequest.onsuccess = () => resolve(getRequest.result)
getRequest.onerror = () => reject(getRequest.error)
})
)
}
public set<K extends StorageKey>(key: K, value: StorageKeyReturnType[K]): Promise<void> {
return this.transaction(
'readwrite',
(store) =>
new Promise((resolve, reject) => {
const putRequest = store.put(value, key)
putRequest.onsuccess = () => resolve()
putRequest.onerror = () => reject(putRequest.error)
})
)
}
public delete<K extends StorageKey>(key: K): Promise<void> {
return this.transaction(
'readwrite',
(store) =>
new Promise((resolve, reject) => {
const deleteRequest = store.delete(key)
deleteRequest.onsuccess = () => resolve()
deleteRequest.onerror = () => reject(deleteRequest.error)
})
)
}
public getAll(): Promise<string[]> {
return this.transaction(
'readonly',
(store) =>
new Promise((resolve, reject) => {
const getAllRequest = store.getAll()
getAllRequest.onsuccess = () => resolve(getAllRequest.result)
getAllRequest.onerror = () => reject(getAllRequest.error)
})
)
}
public getAllKeys(): Promise<IDBValidKey[]> {
return this.transaction(
'readonly',
(store) =>
new Promise((resolve, reject) => {
const getAllKeysRequest = store.getAllKeys()
getAllKeysRequest.onsuccess = () => resolve(getAllKeysRequest.result)
getAllKeysRequest.onerror = () => reject(getAllKeysRequest.error)
})
)
}
public clearStore(): Promise<void> {
return this.transaction(
'readwrite',
(store) =>
new Promise((resolve, reject) => {
const clearRequest = store.clear()
clearRequest.onsuccess = () => resolve()
clearRequest.onerror = () => reject(clearRequest.error)
})
)
}
getPrefixedKey<K extends StorageKey>(key: K): string {
logger.debug('getPrefixedKey', key)
throw new Error('Method not implemented.')
}
subscribeToStorageChanged(
callback: (arg: {
eventType: 'storageCleared' | 'entryModified'
key: string | null
oldValue: string | null
newValue: string | null
}) => {}
): Promise<void> {
logger.debug('subscriveToStorageEvent', callback)
throw new Error('Method not implemented.')
}
/**
* it copies over all key value pairs from a source store into a target one
* @param targetDBName the name of the target DB
* @param targetStoreName the name of the target store
* @param skipKeys all the keys to ignore
*/
public async fillStore(
targetDBName: string,
targetStoreName: string,
skipKeys: string[] = []
): Promise<void> {
if (!this.isSupported) {
logger.error('fillStore', 'IndexedDB not supported.')
return
}
const targetDBRequest = indexedDB.open(targetDBName)
targetDBRequest.onerror = (event: any) => {
throw new Error(`Failed to open target database: ${event.target.error}`)
}
const targetDB = await new Promise<IDBDatabase>((resolve, reject) => {
targetDBRequest.onsuccess = (event) => resolve((event.target as IDBOpenDBRequest).result)
targetDBRequest.onerror = (event: any) => reject(event.target.error)
})
// Copy all items from the source store to the target store, skipping specified keys
await this.transaction('readonly', async (sourceStore) => {
const getAllRequest = sourceStore.getAll()
const getAllKeysRequest = sourceStore.getAllKeys()
getAllRequest.onsuccess = async () => {
getAllKeysRequest.onsuccess = async () => {
const items = getAllRequest.result
const keys = getAllKeysRequest.result
if (!targetDB.objectStoreNames.contains(targetStoreName)) {
logger.error(`${this.storeName} not found. ${new Error().stack}`)
return
}
const targetTransaction = targetDB.transaction(targetStoreName, 'readwrite')
const targetStore = targetTransaction.objectStore(targetStoreName)
keys
.filter((key) => !skipKeys.includes(key.toString()))
.forEach((key, index) => {
targetStore.put(items[index], key)
})
targetTransaction.onerror = (event: any) => {
logger.error('Transaction error: ', event.target.error)
}
}
}
getAllKeysRequest.onerror = () => {
logger.error('Failed to getAllKeys from source:', getAllKeysRequest.error)
}
getAllRequest.onerror = () => {
logger.error('Failed to getAll from source:', getAllRequest.error)
}
})
}
}