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 Util from './util';
import Globals from './globals';

import UI from './ui';
import ClientController from './client-controller';
import { Channel } from './data-types';
import Q from './q-module';

export default class Actions {
	private ui: UI;

	constructor (ui: UI) {
		this.ui = ui;
	}

	async fetchAndUpdateConnection(server: ClientController) {
		// Explicitly not using withPotentialError to make this simpler
		try {
			let connection = await server.fetchConnectionInfo();
			this.ui.setActiveConnection(server, connection);
		} catch (e) {
			LOG.error('Error updating current connection', e);
			this.ui.setActiveConnection(server, { id: null, avatarResourceId: null, displayName: 'Error', status: 'Error', privileges: [], roleName: null, roleColor: null, rolePriority: null });
		}
	}
	
	async fetchAndUpdateMembers(q: Q, server: ClientController) {
		await Util.withPotentialErrorWarnOnCancel(q, {
			taskFunc: async () => {
				if (this.ui.activeServer === null || this.ui.activeServer.id !== server.id) return;
				let members = await server.grabMembers();
				await this.ui.setMembers(server, members);
			},
			errorIndicatorAddFunc: async (errorIndicatorElement) => {
				await this.ui.setMembersErrorIndicator(server, errorIndicatorElement);
			},
			errorContainer: q.$('#server-members'),
			errorMessage: 'Error loading members'
		});
	}

	async fetchAndUpdateChannels(q: Q, server: ClientController) {
		await Util.withPotentialErrorWarnOnCancel(q, {
			taskFunc: async () => {
				if (this.ui.activeServer === null || this.ui.activeServer.id !== server.id) return;
				let channels = await server.grabChannels();
				await this.ui.setChannels(this, server, channels);
				if (this.ui.activeServer === null || this.ui.activeServer.id !== server.id) return;
				if (this.ui.activeChannel === null) {
					// click on the first channel in the list if no channel is active yet
					let element = q.$_('#channel-list .channel');
					if (element) {
						element.click();
					}
				}
			},
			errorIndicatorAddFunc: async (errorIndicatorElement) => {
				await this.ui.setChannelsErrorIndicator(server, errorIndicatorElement);
			},
			errorContainer: q.$('#channel-list'),
			errorMessage: 'Error fetching channels'
		});
	}

	async fetchAndUpdateMessagesRecent(q: Q, server: ClientController, channel: Channel | { id: string }) {
		await Util.withPotentialErrorWarnOnCancel(q, {
			taskFunc: async () => {
				LOG.debug('active server is s#' + this.ui.activeServer?.id);
				LOG.debug('active channel is ch#' + this.ui.activeChannel?.id);
				if (this.ui.activeServer === null || this.ui.activeServer.id !== server.id) return;
				if (this.ui.activeChannel === null || this.ui.activeChannel.id !== server.id) return;
				let messages = await server.grabRecentMessages(channel.id, Globals.MESSAGES_PER_REQUEST);
				await this.ui.setMessages(server, channel, messages, { atTop: messages.length < Globals.MESSAGES_PER_REQUEST, atBottom: true });
			},
			errorIndicatorAddFunc: async (errorIndicatorElement) => {
				await this.ui.setMessagesErrorIndicator(server, channel, errorIndicatorElement);
			},
			errorContainer: q.$('#channel-feed'),
			errorMessage: 'Error fetching messages'
		});
	}

	async fetchAndUpdateMessagesBefore(q: Q, server: ClientController, channel: Channel) {
		await Util.withPotentialErrorWarnOnCancel(q, {
			taskFunc: async () => {
				if (this.ui.activeServer === null || this.ui.activeServer.id !== server.id) return;
				if (this.ui.activeChannel === null || this.ui.activeChannel.id !== server.id) return;
				let topPair = this.ui.getTopMessagePair();
				if (topPair == null) return;
				let messages = await server.fetchMessagesBefore(channel.id, topPair.message.id, Globals.MESSAGES_PER_REQUEST);
				if (messages && messages.length > 0) {
					await this.ui.addMessagesBefore(server, channel, messages, topPair.message);
				} else {
					this.ui.messagesAtTop = true;
				}
			},
			errorIndicatorAddFunc: async (errorIndicatorElement) => {
				await this.ui.addMessagesErrorIndicatorBefore(server, channel, errorIndicatorElement);
			},
			errorContainer: q.$('#channel-feed'),
			errorClasses: [ 'before' ],
			errorMessage: 'Error loading older messages'
		});
	}

	async fetchAndUpdateMessagesAfter(q: Q, server: ClientController, channel: Channel) {
		await Util.withPotentialErrorWarnOnCancel(q, {
			taskFunc: async () => {
				if (this.ui.activeServer === null || this.ui.activeServer.id !== server.id) return;
				if (this.ui.activeChannel === null || this.ui.activeChannel.id !== server.id) return;
				let bottomPair = this.ui.getBottomMessagePair();
				if (bottomPair == null) return;
				let messages = await server.fetchMessagesAfter(channel.id, bottomPair.message.id, Globals.MESSAGES_PER_REQUEST);
				if (messages && messages.length > 0) {
					await this.ui.addMessagesAfter(server, channel, messages, bottomPair.message);
				} else {
					this.ui.messagesAtBottom = true;
				}
			},
			errorIndicatorAddFunc: async (errorIndicatorElement) => {
				await this.ui.addMessagesErrorIndicatorAfter(server, channel, errorIndicatorElement);
			},
			errorContainer: q.$('#channel-feed'),
			errorClasses: [ 'after' ],
			errorMessage: 'Error loading newer messages'
		});
	}
}