Files
mqtt-explorer/backend/src/ConfigStorage.ts
2022-02-27 18:46:56 +01:00

57 lines
1.3 KiB
TypeScript

import * as FileAsync from 'lowdb/adapters/FileAsync'
import * as fs from 'fs-extra'
import * as lowdb from 'lowdb'
import * as path from 'path'
import { backendRpc } from '../../events'
import {
storageClearEvent,
storageLoadEvent,
storageStoreEvent,
} from '../../events/StorageEvents'
export default class ConfigStorage {
private file: string
private database: any
constructor(file: string) {
this.file = file
}
private async getDb() {
const pathInfo = path.parse(this.file)
// Ensure that Settings dir exists
await fs.mkdirp(pathInfo.dir)
const adapter = new FileAsync(this.file)
if (!this.database) {
this.database = await lowdb(adapter)
}
return this.database
}
public async init() {
backendRpc.on(storageStoreEvent, async event => {
const db = await this.getDb()
await db.set(event.store, event.data).write()
return
})
backendRpc.on(storageLoadEvent, async event => {
const db = await this.getDb()
const data = await db.get(event.store).value()
return {
data,
store: event.store,
}
})
backendRpc.on(storageClearEvent, async event => {
const db = await this.getDb()
const keys = await db.keys().value()
for (const key of keys) {
await db.unset(key).write()
}
})
}
}