import * as electronRemote from '@electron/remote';
const electronConsole = electronRemote.getGlobal('console') as Console;
import Logger from '../../logger/logger';
const LOG = Logger.create(__filename, electronConsole);

import * as socketio from "socket.io-client";
import { Channel, GuildMetadata, Member, Message, Resource, ServerMetaData, Token } from "./data-types";
import Globals from './globals';
import { Connectable, AsyncRequestable, AsyncGuaranteedFetchable } from './guild-types';
import DedupAwaiter from './dedup-awaiter';
import Util from './util';
import SocketVerifier from './socket-verifier';

// Note: you should not be calling the eventemitter functions on outside classes
export default class SocketGuild extends Connectable implements AsyncGuaranteedFetchable, AsyncRequestable {
	private queryDedups = new Map<string, DedupAwaiter<any>>();

	constructor(
		private socket: socketio.Socket,
		private verifier: SocketVerifier
	) {
		super();
		// TODO: These requests should be 'bindable' through a connectable structure
		this.socket.on('connect', async () => {
			this.emit('connect');
		});
		this.socket.on('disconnect', () => {
			this.emit('disconnect');
		});

		// TODO: Make sure the UI updates when we get an added/updated member

		// TODO: The server does not emit update-message
		this.socket.on('update-message', async (updatedDataMessage: any) => {
			let updatedMessage = Message.fromDBData(updatedDataMessage);
			this.emit('update-messages', [ updatedMessage ]);
		});
		this.socket.on('new-message', async (dataMessage: any) => {
			let message = Message.fromDBData(dataMessage);
			this.emit('new-messages', [ message ]);
		});

		this.socket.on('update-member', async (updatedDataMember: any) => {
			let updatedMember = Member.fromDBData(updatedDataMember);
			this.emit('update-members', [ updatedMember ]);
		});
		// TODO: The server does not emit new-member
		this.socket.on('new-member', async (dataMember: any) => {
			let member = Member.fromDBData(dataMember);
			this.emit('new-members', [ member ]);
		});

		this.socket.on('update-channel', async (updatedDataChannel: any) => {
			let updatedChannel = Channel.fromDBData(updatedDataChannel);
			this.emit('update-channels', [ updatedChannel ]);
		});
		this.socket.on('new-channel', async (dataChannel: any) => {
			let channel = Channel.fromDBData(dataChannel);
			this.emit('new-channels', [ channel ]);
		});

		this.socket.on('update-metadata', async (dataMeta: any) => {
			let guildMeta = GuildMetadata.fromDBData(dataMeta);
			this.emit('update-metadata', guildMeta);
		});
	}

	// server helper functions

	private async query(timeout: number, endpoint: string, ...args: any[]): Promise<any> {
		await this.verifier.ensureVerified();
		return await new Promise((resolve, reject) => {
			Util.socketEmitTimeout(this.socket, timeout, endpoint, ...args, (errMsg: string | null, serverData: any) => {
				if (errMsg) {
					reject(new Error(`error fetching server data @${endpoint} / [${args.map(arg => LOG.inspect(arg)).join(', ')}]: ${errMsg}`));
				} else {
					resolve(serverData);
				}
			});
		});
	}
	// Note: timeout is only respected for the first deduped request
	private async queryDedup(timeout: number, endpoint: string, ...args: (string | number)[]): Promise<any> {
		let id = `query-@${endpoint}(${args.join(',')})`;
		let dedup = this.queryDedups.get(id);
		if (!dedup) {
			dedup = new DedupAwaiter(async () => {
				let result = await this.query(timeout, endpoint, ...args);
				this.queryDedups.delete(id);
				return result;
			});
		}
		return await dedup.call();
	}

	// connectable functions
	async fetchMetadata(): Promise<GuildMetadata> {
		let data = await this.queryDedup(Globals.DEFAULT_SOCKET_TIMEOUT, 'fetch-server');
		return GuildMetadata.fromDBData(data);
	}
	async fetchMembers(): Promise<Member[]> {
		let data = await this.queryDedup(Globals.DEFAULT_SOCKET_TIMEOUT, 'fetch-members');
		return data.map((dataMember: any) => Member.fromDBData(dataMember));
	}
	async fetchChannels(): Promise<Channel[]> {
		let data = await this.queryDedup(Globals.DEFAULT_SOCKET_TIMEOUT, 'fetch-channels');
		return data.map((dataChannel: any) => Channel.fromDBData(dataChannel));
	}
	async fetchMessagesRecent(channelId: string, number: number): Promise<Message[]> {
		let data = await this.queryDedup(Globals.DEFAULT_SOCKET_TIMEOUT, 'fetch-messages-recent', channelId, number);
		return data.map((dataMessage: any) => Message.fromDBData(dataMessage));
	}
	async fetchMessagesBefore(channelId: string, messageId: string, number: number): Promise<Message[]> {
		let data = await this.queryDedup(Globals.DEFAULT_SOCKET_TIMEOUT, 'fetch-messages-before', channelId, messageId, number);
		return data.map((dataMessage: any) => Message.fromDBData(dataMessage));
	}
	async fetchMessagesAfter(channelId: string, messageId: string, number: number): Promise<Message[]> {
		let data = await this.queryDedup(Globals.DEFAULT_SOCKET_TIMEOUT, 'fetch-messages-after', channelId, messageId, number);
		return data.map((dataMessage: any) => Message.fromDBData(dataMessage));
	}
	async fetchResource(resourceId: string): Promise<Resource> {
		let data = await this.queryDedup(Globals.DEFAULT_SOCKET_TIMEOUT, 'fetch-resource', resourceId);
		return Resource.fromDBData(data);
	}
	async fetchTokens(): Promise<Token[]> {
		let data = await this.queryDedup(Globals.DEFAULT_SOCKET_TIMEOUT, 'fetch-tokens');
		return data.map((dataToken: any) => Token.fromDBData(dataToken));
	}

	// We don't want to dedup these
	async requestSendMessage(channelId: string, text: string): Promise<void> {
		let _dataMessage = await this.query(Globals.DEFAULT_SOCKET_TIMEOUT, 'send-message', channelId, text);
	}
	async requestSendMessageWithResource(channelId: string, text: string | null, resource: Buffer, resourceName: string): Promise<void> {
		let _dataMessage = await this.query(Globals.DEFAULT_SOCKET_TIMEOUT, 'send-message-with-resource', channelId, text, resource, resourceName);
	}
	async requestSetStatus(status: string): Promise<void> {
		await this.query(Globals.DEFAULT_SOCKET_TIMEOUT, 'set-status', status);
	}
	async requestSetDisplayName(displayName: string): Promise<void> {
		await this.query(Globals.DEFAULT_SOCKET_TIMEOUT, 'set-display-name', displayName);
	}
	async requestSetAvatar(avatar: Buffer): Promise<void> {
		await this.query(Globals.DEFAULT_SOCKET_TIMEOUT, 'set-avatar', avatar);
	}
	async requestSetServerName(serverName: string): Promise<void> {
		await this.query(Globals.DEFAULT_SOCKET_TIMEOUT, 'set-name', serverName);
	}
	async requestSetServerIcon(serverIcon: Buffer): Promise<void> {
		await this.query(Globals.DEFAULT_SOCKET_TIMEOUT, 'set-icon', serverIcon);
	}
	async requestDoUpdateChannel(channelId: string, name: string, flavorText: string | null): Promise<void> {
		let _changedChannel = await this.query(Globals.DEFAULT_SOCKET_TIMEOUT, 'update-channel', channelId, name, flavorText);
	}
	async requestDoCreateChannel(name: string, flavorText: string | null): Promise<void> {
		let _newChannel = await this.query(Globals.DEFAULT_SOCKET_TIMEOUT, 'create-text-channel', name, flavorText);
	}
	async requestDoRevokeToken(token: string): Promise<void> {
		await this.query(Globals.DEFAULT_SOCKET_TIMEOUT, 'revoke-token', token);
	}
}