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105 lines
2.9 KiB
105 lines
2.9 KiB
import fs from 'fs-extra';
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import { path } from '@tycrek/joint';
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import { UserConfiguration, UserConfigTypeChecker } from 'ass';
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import { log } from './log';
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/**
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* Returns a boolean if the provided value is a number
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*/
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const numChecker = (val: any) => {
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try { return !isNaN(parseInt(val)) && typeof val !== 'string'; }
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catch (err) { return false; }
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}
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/**
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* User-config property type checker functions
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*/
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const Checkers: UserConfigTypeChecker = {
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uploadsDir: (val) => {
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try { fs.accessSync(val); return true; }
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catch (err) { return false; }
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},
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idType: (val) => {
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const options = ['random', 'original', 'gfycat', 'timestamp', 'zws'];
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return options.includes(val);
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},
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idSize: numChecker,
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gfySize: numChecker,
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maximumFileSize: numChecker,
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}
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export class UserConfig {
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private static _config: UserConfiguration;
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private static _ready = false;
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public static get config() { return UserConfig._config; }
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public static get ready() { return UserConfig._ready; }
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constructor(config?: any) {
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// Typically this would only happen during first-time setup (for now)
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if (config != null) {
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UserConfig._config = UserConfig.parseConfig(config);
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UserConfig._ready = true;
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}
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}
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/**
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* Ensures that all config options are valid
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*/
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private static parseConfig(c: any) {
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const config = (typeof c === 'string' ? JSON.parse(c) : c) as UserConfiguration;
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if (!Checkers.uploadsDir(config.uploadsDir)) throw new Error(`Unable to access uploads directory: ${config.uploadsDir}`);
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if (!Checkers.idType(config.idType)) throw new Error(`Invalid ID type: ${config.idType}`);
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if (!Checkers.idSize(config.idSize)) throw new Error('Invalid ID size');
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if (!Checkers.gfySize(config.gfySize)) throw new Error('Invalid Gfy size');
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if (!Checkers.maximumFileSize(config.maximumFileSize)) throw new Error('Invalid maximum file size');
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// All is fine, carry on!
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return config;
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}
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/**
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* Save the config file to disk
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*/
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public static saveConfigFile(): Promise<void> {
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return new Promise(async (resolve, reject) => {
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try {
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// Only save is the config has been parsed
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if (!UserConfig._ready) throw new Error('Config not ready to be saved!');
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// Write to file
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await fs.writeFile(path.join('userconfig.json'), JSON.stringify(UserConfig._config, null, '\t'));
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resolve(void 0);
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} catch (err) {
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log.error('Failed to save config file!');
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reject(err);
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}
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});
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}
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/**
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* Reads the config file from disk
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*/
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public static readConfigFile(): Promise<void> {
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return new Promise(async (resolve, reject) => {
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try {
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// Read the file data
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const data = (await fs.readFile(path.join('userconfig.json'))).toString();
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// Ensure the config is valid
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UserConfig._config = UserConfig.parseConfig(data);
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UserConfig._ready = true;
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resolve(void 0);
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} catch (err) {
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log.error('Failed to read config file!');
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reject(err);
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}
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});
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}
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}
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