import {
	commands,
	ExtensionContext,
	StatusBarAlignment,
	StatusBarItem,
	window,
	workspace
} from 'vscode';
import RPCClient from './client/RPCClient';
import Logger from './structures/Logger';
const { register } = require('discord-rpc'); // eslint-disable-line

const statusBarIcon: StatusBarItem = window.createStatusBarItem(StatusBarAlignment.Left);
statusBarIcon.text = '$(pulse) Connecting to Discord...';

const config = workspace.getConfiguration('discord');
register(config.get<string>('clientID'));
const rpc = new RPCClient(config.get<string>('clientID')!, statusBarIcon);

export async function activate(context: ExtensionContext): Promise<void> {
	Logger.log('Discord Presence activated!');

	let isWorkspaceExcluded = false;
	const excludePatterns = config.get<string[]>('workspaceExcludePatterns');
	if (excludePatterns && excludePatterns.length > 0) {
		for (const pattern of excludePatterns) {
			const regex = new RegExp(pattern);
			const folders = workspace.workspaceFolders;
			if (!folders) break;
			if (folders.some((folder): boolean => regex.test(folder.uri.fsPath))) {
				isWorkspaceExcluded = true;
				break;
			}
		}
	}

	if (!isWorkspaceExcluded && config.get<boolean>('enabled')) {
		statusBarIcon.show();
		try {
			await rpc.login();
		} catch (error) {
			Logger.log(`Encountered following error after trying to login:\n${error}`);
			await rpc.dispose();
			if (!config.get('silent')) {
				if (error.message.includes('ENOENT')) window.showErrorMessage('No Discord Client detected!');
				else window.showErrorMessage(`Couldn't connect to Discord via RPC: ${error.toString()}`);
			}
			rpc.statusBarIcon.text = '$(pulse) Reconnect to Discord';
			rpc.statusBarIcon.command = 'discord.reconnect';
		}
	}

	const enabler = commands.registerCommand('discord.enable', async (): Promise<void> => {
		await rpc.dispose();
		config.update('enabled', true);
		rpc.config = workspace.getConfiguration('discord');
		rpc.statusBarIcon.text = '$(pulse) Connecting to Discord...';
		rpc.statusBarIcon.show();
		await rpc.login();
		window.showInformationMessage('Enabled Discord Rich Presence for this workspace.');
	});

	const disabler = commands.registerCommand('discord.disable', async (): Promise<void> => {
		config.update('enabled', false);
		rpc.config = workspace.getConfiguration('discord');
		await rpc.dispose();
		rpc.statusBarIcon.hide();
		window.showInformationMessage('Disabled Discord Rich Presence for this workspace.');
	});

	const reconnecter = commands.registerCommand('discord.reconnect', async (): Promise<void> => {
		await rpc.dispose();
		await rpc.login();
		if (!config.get('silent')) window.showInformationMessage('Reconnecting to Discord RPC...');
		rpc.statusBarIcon.text = '$(pulse) Reconnecting to Discord...';
		rpc.statusBarIcon.command = undefined;
	});

	const allowSpectate = commands.registerCommand('discord.allowSpectate', async (): Promise<void> => {
		await rpc.allowSpectate();
	});

	const disableSpectate = commands.registerCommand('discord.disableSpectate', async (): Promise<void> => {
		await rpc.disableSpectate();
	});

	const allowJoinRequests = commands.registerCommand('discord.allowJoinRequests', async (): Promise<void> => {
		await rpc.allowJoinRequests();
	});

	const disableJoinRequests = commands.registerCommand('discord.disableJoinRequests', async (): Promise<void> => {
		await rpc.disableJoinRequests();
	});

	context.subscriptions.push(enabler, disabler, reconnecter, allowSpectate, disableSpectate, allowJoinRequests, disableJoinRequests);
}

export async function deactivate(): Promise<void> {
	await rpc.dispose();
}

process.on('unhandledRejection', (err): void => Logger.log(err as string));