41 lines
1.1 KiB
TypeScript
41 lines
1.1 KiB
TypeScript
|
import * as fs from "fs-extra"
|
||
|
|
import { logger } from "@coder/logger"
|
||
|
|
import { extend } from "./util"
|
||
|
|
|
||
|
|
export type Settings = { [key: string]: Settings | string | boolean | number }
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Provides read and write access to settings.
|
||
|
|
*/
|
||
|
|
export class SettingsProvider<T> {
|
||
|
|
public constructor(private readonly settingsPath: string) {}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read settings from the file. On a failure return last known settings and
|
||
|
|
* log a warning.
|
||
|
|
*/
|
||
|
|
public async read(): Promise<T> {
|
||
|
|
try {
|
||
|
|
const raw = (await fs.readFile(this.settingsPath, "utf8")).trim()
|
||
|
|
return raw ? JSON.parse(raw) : {}
|
||
|
|
} catch (error) {
|
||
|
|
if (error.code !== "ENOENT") {
|
||
|
|
logger.warn(error.message)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return {} as T
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Write settings combined with current settings. On failure log a warning.
|
||
|
|
* Objects will be merged and everything else will be replaced.
|
||
|
|
*/
|
||
|
|
public async write(settings: Partial<T>): Promise<void> {
|
||
|
|
try {
|
||
|
|
await fs.writeFile(this.settingsPath, JSON.stringify(extend(this.read(), settings)))
|
||
|
|
} catch (error) {
|
||
|
|
logger.warn(error.message)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|