Files
mqtt-explorer/backend/src/ConfigStorage.ts

56 lines
1.3 KiB
TypeScript

import FileAsync from 'lowdb/adapters/FileAsync'
import fs from 'fs-extra'
import lowdb from 'lowdb'
import path from 'path'
import { Rpc } from '../../events/EventSystem/Rpc'
import { storageClearEvent, storageLoadEvent, storageStoreEvent } from '../../events/StorageEvents'
export default class ConfigStorage {
private file: string
private database: any
private rpc: Rpc
constructor(file: string, rpc: Rpc) {
this.file = file
this.rpc = rpc
}
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() {
this.rpc.on(storageStoreEvent, async event => {
const db = await this.getDb()
await db.set(event.store, event.data).write()
return
})
this.rpc.on(storageLoadEvent, async event => {
const db = await this.getDb()
const data = await db.get(event.store).value()
return {
data,
store: event.store,
}
})
this.rpc.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()
}
})
}
}