151 lines
4.2 KiB
TypeScript
151 lines
4.2 KiB
TypeScript
import * as path from 'path';
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import { ChannelManager } from '@squeebot/core/lib/channel';
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import { PluginManager, PluginMetaLoader } from '@squeebot/core/lib/plugin';
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import { RepositoryManager } from '@squeebot/core/lib/plugin/repository';
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import { NPMExecutor } from '@squeebot/core/lib/npm';
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import { Configuration, IEnvironment } from '@squeebot/core/lib/types';
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import { ScopedEventEmitter } from '@squeebot/core/lib/util';
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import { ISqueebotCore, logger } from '@squeebot/core/lib/core';
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const defaultConfiguration: {[key: string]: any} = {
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channels: [],
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enabled: [],
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name: 'squeebot',
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};
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/**
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* Reference implementation of a Squeebot system using core classes.
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*/
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export class Squeebot implements ISqueebotCore {
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public npm: NPMExecutor = new NPMExecutor(this.environment, '@squeebot/core');
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public stream: ScopedEventEmitter = new ScopedEventEmitter();
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public pluginManager: PluginManager = new PluginManager(
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[],
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this.stream,
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this.environment,
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this.npm);
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public repositoryManager: RepositoryManager = new RepositoryManager(
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this.environment,
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this.pluginManager,
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);
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public channelManager: ChannelManager = new ChannelManager(this.stream);
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public pluginLoader: PluginMetaLoader = new PluginMetaLoader(
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this.environment,
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);
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public config: Configuration = new Configuration(
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this.environment,
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path.join(this.environment.configurationPath, 'squeebot.json'),
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defaultConfiguration,
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);
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private shuttingDown = false;
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constructor(public environment: IEnvironment) {}
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public async initialize(autostart = true): Promise<void> {
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// Load configuration
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await this.config.load();
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// Initialize npm executor
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await this.npm.loadPackageFile();
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// Load all plugins
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const plugins = await this.pluginLoader.loadAll();
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// Give manager all loaded manifests
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this.pluginManager.addAvailable(plugins);
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// Load repositories
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await this.repositoryManager.loadFromFiles();
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// Start channels
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this.channelManager.initialize(this.config.get('channels'));
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// Send core on request
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this.stream.on('core', 'request-core', (pl: string) =>
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this.stream.emitTo(pl, 'core', this));
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// Handle uncaught exceptions to prevent the whole bot from getting bricked
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process.on('uncaughtException', (err) => {
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logger.error('Process caught an unhandled exception:', err.stack);
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this.stream.emit('error', err);
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});
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// Handle uncaught rejections to prevent the whole bot from getting bricked
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process.on('unhandledRejection', (reason, promise) => {
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logger.error('Process caught an unhandled promise rejection:', reason);
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logger.error('In promise:', promise);
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const error = new Error(reason?.toString());
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error.name = 'unhandledRejection';
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this.stream.emit('error', error);
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});
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// Start enabled plugins
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if (autostart) {
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await this.startPlugins();
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}
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}
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public async startPlugins(): Promise<void> {
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for (const pluginName of this.config.get('enabled')) {
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const getManifest = this.pluginManager.getAvailableByName(pluginName);
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if (!getManifest) {
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logger.error(new Error(`Failed to start ${pluginName}: no manifest available. You might not have installed it.`));
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continue;
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}
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try {
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await this.pluginManager.load(getManifest);
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} catch (e: any) {
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logger.error('Failed to start %s:', pluginName, e.stack);
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}
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}
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}
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public attachReadline(rl: any): void {
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// Pass readline to logger
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logger.setReadline(rl);
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// Send readline on request
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this.stream.on('core', 'request-cli', () =>
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this.stream.emit('cli', rl));
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// Handle readline events
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rl.on('line', (l: string) => this.stream.emit('cli-line', l));
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rl.on('SIGINT', () => this.shutdown());
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}
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public shutdown(): void {
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if (this.shuttingDown) {
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return;
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}
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logger.warn('Shutting down..');
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this.shuttingDown = true;
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// Subsystems confirmed shutdown, go ahead and exit.
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this.stream.on('core', 'shutdown', (state: number) => {
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if (state > 0) {
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this.config.save().then((x) => process.exit(0));
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}
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});
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// Prompt subsystems to prepare for shutting down
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this.stream.emitTo('core', 'shutdown', 0);
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}
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}
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