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import dateFormat from 'dateformat';
import {
existsSync,
ensureFileSync,
readJsonSync,
copySync,
writeJSONSync,
removeSync,
} from 'fs-extra';
import { resolve } from 'path';
/**
* Server configuration manager, handling loading, creation, parsing and saving
* of the main config.json file
* @property {String} base - Base path that all imports are required in from
* @author Marzavec ( https://github.com/marzavec )
* @version v2.0.0
* @license WTFPL ( http://www.wtfpl.net/txt/copying/ )
*/
class ConfigManager {
/**
* Create a `ConfigManager` instance for managing application settings
* @param {String} basePath executing directory name; __dirname
*/
constructor(basePath = __dirname) {
/**
* Full path to config.json file
* @type {String}
*/
this.configPath = resolve(basePath, 'config/config.json');
if (!existsSync(this.configPath)) {
ensureFileSync(this.configPath);
}
}
/**
* Loads config.json (main server config) into memory
* @public
* @return {(JSON|Boolean)} False if the config.json could not be loaded
*/
async load() {
try {
this.config = readJsonSync(this.configPath);
} catch (e) {
return false;
}
return this.config;
}
/**
* Creates backup of current config into configPath
* @private
* @return {String} Backed up config.json path
*/
backup() {
const backupPath = `${this.configPath}.${dateFormat('dd-mm-yy-HH-MM-ss')}.bak`;
copySync(this.configPath, backupPath);
return backupPath;
}
/**
* First makes a backup of the current `config.json`, then writes current config
* to disk
* @public
* @return {Boolean} False on failure
*/
save() {
const backupPath = this.backup();
try {
writeJSONSync(this.configPath, this.config, {
// Indent with two spaces
spaces: 2,
});
removeSync(backupPath);
return true;
} catch (err) {
console.log(`Failed to save config file: ${err}`);
return false;
}
}
/**
* Updates current config[`key`] with `value` then writes changes to disk
* @param {*} key arbitrary configuration key
* @param {*} value new value to change `key` to
* @public
* @return {Boolean} False on failure
*/
set(key, value) {
const realKey = `${key}`;
this.config[realKey] = value;
return this.save();
}
}
export default ConfigManager;
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