import type { ILivechatAgent, ILivechatDepartment, ILivechatTrigger, ILivechatVisitor, IOmnichannelRoom } from '@rocket.chat/core-typings';
import { License } from '@rocket.chat/license';
import { EmojiCustom, LivechatTrigger, LivechatVisitors, LivechatRooms, LivechatDepartment } from '@rocket.chat/models';
import { makeFunction } from '@rocket.chat/patch-injection';
import { Meteor } from 'meteor/meteor';

import { callbacks } from '../../../../lib/callbacks';
import { normalizeAgent } from '../../../../lib/omnichannel/Helper';
import { getInitSettings } from '../../../../lib/omnichannel/settings';

async function findTriggers(): Promise<Pick<ILivechatTrigger, '_id' | 'actions' | 'conditions' | 'runOnce'>[]> {
	const triggers = await LivechatTrigger.findEnabled().toArray();
	const hasLicense = License.hasModule('livechat-enterprise');
	const premiumActions = ['use-external-service'];

	return triggers
		.filter(({ actions }) => hasLicense || actions.some((c) => !premiumActions.includes(c.name)))
		.map(({ _id, actions, conditions, runOnce }) => ({
			_id,
			actions,
			conditions,
			runOnce,
		}));
}

export type CheckUnitsFromUser = {
	userId?: string;
	businessUnit?: string;
};

export const checkUnitsFromUser = makeFunction(async (_params: CheckUnitsFromUser): Promise<void> => undefined);

async function findDepartments(
	businessUnit?: string,
	userId?: string,
): Promise<Pick<ILivechatDepartment, '_id' | 'name' | 'showOnRegistration' | 'showOnOfflineForm' | 'departmentsAllowedToForward'>[]> {
	// TODO: check this function usage
	await checkUnitsFromUser({ userId, businessUnit });

	return LivechatDepartment.findEnabledWithAgentsAndBusinessUnit<
		Pick<ILivechatDepartment, '_id' | 'name' | 'showOnRegistration' | 'showOnOfflineForm' | 'departmentsAllowedToForward'>
	>(businessUnit, {
		_id: 1,
		name: 1,
		showOnRegistration: 1,
		showOnOfflineForm: 1,
		departmentsAllowedToForward: 1,
	}).toArray();
}

export function findGuest(token: string): Promise<ILivechatVisitor | null> {
	return LivechatVisitors.getVisitorByToken(token);
}

export function findGuestWithoutActivity(
	token: string,
): Promise<Pick<ILivechatVisitor, '_id' | 'name' | 'username' | 'token' | 'visitorEmails' | 'department'> | null> {
	return LivechatVisitors.getVisitorByToken(token, { projection: { name: 1, username: 1, token: 1, visitorEmails: 1, department: 1 } });
}

export async function findRoom(token: string, rid?: string): Promise<IOmnichannelRoom | null> {
	const fields = {
		t: 1,
		departmentId: 1,
		servedBy: 1,
		open: 1,
		v: 1,
		ts: 1,
	};

	if (!rid) {
		return LivechatRooms.findOneByVisitorToken(token, fields);
	}

	return LivechatRooms.findOneByIdAndVisitorToken(rid, token, fields);
}

export async function findOpenRoom(token: string, departmentId?: string, callerId?: string): Promise<IOmnichannelRoom | undefined> {
	const options = {
		projection: {
			departmentId: 1,
			servedBy: 1,
			open: 1,
		},
	};

	const extraQuery = await callbacks.run('livechat.applyRoomRestrictions', {}, { userId: callerId });
	const rooms = departmentId
		? await LivechatRooms.findOpenByVisitorTokenAndDepartmentId(token, departmentId, options, extraQuery).toArray()
		: await LivechatRooms.findOpenByVisitorToken(token, options, extraQuery).toArray();
	if (rooms && rooms.length > 0) {
		return rooms[0];
	}
}

export async function findAgent(agentId?: string): Promise<void | { hiddenInfo: boolean } | ILivechatAgent> {
	return normalizeAgent(agentId);
}

export function normalizeHttpHeaderData(headers: Headers = new Headers()): {
	httpHeaders: Record<string, string | string[] | undefined>;
} {
	const httpHeaders = Object.fromEntries(headers.entries());
	return { httpHeaders };
}

export async function settings({ businessUnit = '', userId }: { businessUnit?: string; userId?: string } = {}): Promise<
	Record<string, string | number | any>
> {
	const [initSettings, triggers, departments, emojis] = await Promise.all([
		getInitSettings(),
		findTriggers(),
		findDepartments(businessUnit, userId),
		EmojiCustom.find().toArray(),
	]);
	const sound = `${Meteor.absoluteUrl()}sounds/chime.mp3`;
	return {
		enabled: initSettings.Livechat_enabled,
		settings: {
			registrationForm: initSettings.Livechat_registration_form,
			allowSwitchingDepartments: initSettings.Livechat_allow_switching_departments,
			nameFieldRegistrationForm: initSettings.Livechat_name_field_registration_form,
			emailFieldRegistrationForm: initSettings.Livechat_email_field_registration_form,
			displayOfflineForm: initSettings.Livechat_display_offline_form,
			videoCall: initSettings.Omnichannel_call_provider === 'default-provider',
			fileUpload: initSettings.Livechat_fileupload_enabled && initSettings.FileUpload_Enabled,
			language: initSettings.Language,
			transcript: initSettings.Livechat_enable_transcript,
			historyMonitorType: initSettings.Livechat_history_monitor_type,
			forceAcceptDataProcessingConsent: initSettings.Livechat_force_accept_data_processing_consent,
			showConnecting: initSettings.Livechat_Show_Connecting,
			agentHiddenInfo: initSettings.Livechat_show_agent_info === false,
			clearLocalStorageWhenChatEnded: initSettings.Livechat_clear_local_storage_when_chat_ended,
			limitTextLength:
				initSettings.Livechat_enable_message_character_limit &&
				(initSettings.Livechat_message_character_limit || initSettings.Message_MaxAllowedSize),
			hiddenSystemMessages: initSettings.Livechat_hide_system_messages,
			livechatLogo: initSettings.Assets_livechat_widget_logo,
			hideWatermark: initSettings.Livechat_hide_watermark || false,
			visitorsCanCloseChat: initSettings.Omnichannel_allow_visitors_to_close_conversation,
		},
		theme: {
			title: initSettings.Livechat_title,
			color: initSettings.Livechat_title_color,
			offlineTitle: initSettings.Livechat_offline_title,
			offlineColor: initSettings.Livechat_offline_title_color,
			position: initSettings.Livechat_widget_position || 'right',
			background: initSettings.Livechat_background,
			hideExpandChat: initSettings.Livechat_hide_expand_chat,
			actionLinks: {
				jitsi: [
					{ icon: 'icon-videocam', i18nLabel: 'Accept' },
					{ icon: 'icon-cancel', i18nLabel: 'Decline' },
				],
			},
		},
		messages: {
			offlineMessage: initSettings.Livechat_offline_message,
			offlineSuccessMessage: initSettings.Livechat_offline_success_message,
			offlineUnavailableMessage: initSettings.Livechat_offline_form_unavailable,
			conversationFinishedMessage: initSettings.Livechat_conversation_finished_message,
			conversationFinishedText: initSettings.Livechat_conversation_finished_text,
			transcriptMessage: initSettings.Livechat_transcript_message,
			registrationFormMessage: initSettings.Livechat_registration_form_message,
			dataProcessingConsentText: initSettings.Livechat_data_processing_consent_text,
		},
		survey: {
			items: ['satisfaction', 'agentKnowledge', 'agentResposiveness', 'agentFriendliness'],
			values: ['1', '2', '3', '4', '5'],
		},
		triggers,
		departments,
		resources: {
			sound,
			emojis,
		},
	};
}

export const getExtraConfigInfo = makeFunction(
	async (options: {
		room?: IOmnichannelRoom;
	}): Promise<{
		queueInfo?: unknown;
		customFields?: {
			options?: string[] | undefined;
			_id: string;
			label: string;
			regexp: string | undefined;
			required: boolean;
			type: string | undefined;
			defaultValue: string | null;
		}[];
		room?: IOmnichannelRoom;
	}> => options,
);

export const onCheckRoomParams = makeFunction((params: any) => params);