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