56 lines
1.4 KiB
TypeScript
56 lines
1.4 KiB
TypeScript
import { readFileSync, writeFileSync } from 'fs'
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import { resolve } from 'path'
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import yaml from 'yaml'
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type AllowedYamlTypes = string | number | boolean
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type AllowedTypes = AllowedYamlTypes | AllowedYamlTypes[]
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export default class Memiens {
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private readonly file: string
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private state: any
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constructor(file: string) {
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this.file = resolve(file)
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try {
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this.read()
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} catch (e) {
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this.state = {}
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this.save()
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}
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}
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public get<T extends AllowedTypes>(setting: string, defaultValue: T | undefined = undefined): T {
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const props = setting.split('.')
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let root = this.state
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try {
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for (const prop of props) root = root[prop]
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} catch (e) {}
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if (root) return root
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if (defaultValue) {
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this.set(setting, defaultValue)
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return defaultValue
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}
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throw new Error(`Could not load the setting: "${setting}" and no default value was provided`)
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}
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public set(setting: string, value: AllowedTypes): void {
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const props = setting.split('.')
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let root = this.state
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for (const prop of props.slice(0, -1)) {
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if (typeof root[prop] !== 'object') root[prop] = {}
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root = root[prop]
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}
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root[props[props.length - 1]] = value
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this.save()
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}
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private read() {
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this.state = yaml.parse(readFileSync(this.file, 'utf-8')) || {}
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}
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private save() {
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writeFileSync(this.file, yaml.stringify(this.state), 'utf-8')
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}
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}
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