92 lines
2.1 KiB
JavaScript
92 lines
2.1 KiB
JavaScript
const _ = require('lodash');
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const fs = require('fs-extra');
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const branchFilename = __dirname + '/application_env';
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const propsToSave = [
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'maxUploadFileSize',
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'maxTempPublicDirSize',
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'maxUploadPublicDirSize',
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'useExternalBookConverter',
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'servers',
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];
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let instance = null;
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//singleton
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class ConfigManager {
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constructor() {
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if (!instance) {
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this.inited = false;
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instance = this;
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}
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return instance;
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}
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async init() {
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if (this.inited)
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throw new Error('already inited');
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this.branch = 'production';
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try {
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await fs.access(branchFilename);
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this.branch = (await fs.readFile(branchFilename, 'utf8')).trim();
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} catch (err) {
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//
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}
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process.env.NODE_ENV = this.branch;
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this.branchConfigFile = __dirname + `/${this.branch}.js`;
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this._config = require(this.branchConfigFile);
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await fs.ensureDir(this._config.dataDir);
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this._userConfigFile = `${this._config.dataDir}/config.json`;
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this.inited = true;
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}
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get config() {
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if (!this.inited)
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throw new Error('not inited');
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return _.cloneDeep(this._config);
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}
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set config(value) {
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Object.assign(this._config, value);
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}
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get userConfigFile() {
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return this._userConfigFile;
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}
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set userConfigFile(value) {
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if (value)
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this._userConfigFile = value;
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}
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async load() {
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if (!this.inited)
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throw new Error('not inited');
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if (!await fs.pathExists(this.userConfigFile)) {
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await this.save();
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return;
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}
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const data = await fs.readFile(this.userConfigFile, 'utf8');
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this.config = JSON.parse(data);
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}
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async save() {
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if (!this.inited)
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throw new Error('not inited');
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const dataToSave = _.pick(this._config, propsToSave);
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await fs.writeFile(this.userConfigFile, JSON.stringify(dataToSave, null, 4));
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}
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}
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module.exports = ConfigManager; |