import { AddLinkEventTracker, GetSessionDataManager, GuideOnDutyStatusMessageEvent, GuideSessionAttachedMessageEvent, GuideSessionDetachedMessageEvent, GuideSessionEndedMessageEvent, GuideSessionErrorMessageEvent, GuideSessionInvitedToGuideRoomMessageEvent, GuideSessionMessageMessageEvent, GuideSessionOnDutyUpdateMessageComposer, GuideSessionPartnerIsTypingMessageEvent, GuideSessionStartedMessageEvent, ILinkEventTracker, PerkAllowancesMessageEvent, PerkEnum, RemoveLinkEventTracker } from '@nitrots/nitro-renderer';
import { FC, useCallback, useEffect, useState } from 'react';
import { GetConfigurationValue, GuideSessionState, GuideToolMessage, GuideToolMessageGroup, LocalizeText, SendMessageComposer } from '../../api';
import { NitroCardContentView, NitroCardHeaderView, NitroCardView } from '../../common';
import { GuideToolEvent } from '../../events';
import { useMessageEvent, useNotification, useUiEvent } from '../../hooks';
import { GuideToolAcceptView } from './views/GuideToolAcceptView';
import { GuideToolMenuView } from './views/GuideToolMenuView';
import { GuideToolOngoingView } from './views/GuideToolOngoingView';
import { GuideToolUserCreateRequestView } from './views/GuideToolUserCreateRequestView';
import { GuideToolUserFeedbackView } from './views/GuideToolUserFeedbackView';
import { GuideToolUserNoHelpersView } from './views/GuideToolUserNoHelpersView';
import { GuideToolUserPendingView } from './views/GuideToolUserPendingView';
import { GuideToolUserSomethingWrogView } from './views/GuideToolUserSomethingWrogView';
import { GuideToolUserThanksView } from './views/GuideToolUserThanksView';

export const GuideToolView: FC<{}> = props =>
{
    const [ isVisible, setIsVisible ] = useState<boolean>(false);
    const [ headerText, setHeaderText ] = useState<string>(LocalizeText('guide.help.guide.tool.title'));
    const [ noCloseButton, setNoCloseButton ] = useState<boolean>(false);
    const [ sessionState, setSessionState ] = useState<string>(GuideSessionState.GUIDE_TOOL_MENU);

    const [ isOnDuty, setIsOnDuty ] = useState<boolean>(false);
    const [ isHandlingBullyReports, setIsHandlingBullyReports ] = useState<boolean>(false);
    const [ isHandlingGuideRequests, setIsHandlingGuideRequests ] = useState<boolean>(false);
    const [ isHandlingHelpRequests, setIsHandlingHelpRequests ] = useState<boolean>(false);

    const [ helpersOnDuty, setHelpersOnDuty ] = useState<number>(0);
    const [ guidesOnDuty, setGuidesOnDuty ] = useState<number>(0);
    const [ guardiansOnDuty, setGuardiansOnDuty ] = useState<number>(0);

    const [ userRequest, setUserRequest ] = useState<string>('');

    const [ helpRequestDescription, setHelpRequestDescription ] = useState<string>(null);
    const [ helpRequestAverageTime, setHelpRequestAverageTime ] = useState<number>(0);

    const [ ongoingUserId, setOngoingUserId ] = useState<number>(0);
    const [ ongoingUsername, setOngoingUsername ] = useState<string>(null);
    const [ ongoingFigure, setOngoingFigure ] = useState<string>(null);
    const [ ongoingIsTyping, setOngoingIsTyping ] = useState<boolean>(false);
    const [ ongoingMessageGroups, setOngoingMessageGroups ] = useState<GuideToolMessageGroup[]>([]);

    const { simpleAlert = null } = useNotification();

    const updateSessionState = useCallback((newState: string, replacement?: string) =>
    {
        switch(newState)
        {
            case GuideSessionState.GUIDE_TOOL_MENU:
                setHeaderText(LocalizeText('guide.help.guide.tool.title'));
                setNoCloseButton(false);
                break;
            case GuideSessionState.GUIDE_ACCEPT:
                setHeaderText(LocalizeText('guide.help.request.guide.accept.title'));
                setNoCloseButton(true);
                break;
            case GuideSessionState.GUIDE_ONGOING:
                setHeaderText(LocalizeText('guide.help.request.guide.ongoing.title', [ 'name' ], [ replacement ]));
                setNoCloseButton(true);
                break;
            case GuideSessionState.USER_CREATE:
                setHeaderText(LocalizeText('guide.help.request.user.create.title'));
                setNoCloseButton(false);
                break;
            case GuideSessionState.USER_PENDING:
                setHeaderText(LocalizeText('guide.help.request.user.pending.title'));
                setNoCloseButton(true);
                break;
            case GuideSessionState.USER_ONGOING:
                setHeaderText(LocalizeText('guide.help.request.user.ongoing.title', [ 'name' ], [ replacement ]));
                setNoCloseButton(true);
                break;
            case GuideSessionState.USER_FEEDBACK:
                setHeaderText(LocalizeText('guide.help.request.user.feedback.title'));
                setNoCloseButton(true);
                break;
            case GuideSessionState.USER_THANKS:
                setHeaderText(LocalizeText('guide.help.request.user.thanks.title'));
                setNoCloseButton(false);
                break;
            case GuideSessionState.USER_NO_HELPERS:
                setHeaderText(LocalizeText('guide.help.request.no_tour_guides.heading'));
                setNoCloseButton(false);
                break;
            case GuideSessionState.USER_SOMETHING_WRONG:
                setHeaderText(LocalizeText('guide.help.request.user.guide.disconnected.error.heading'));
                setNoCloseButton(false);
                break;
        }

        setSessionState(newState);
        setIsVisible(true);
    }, []);

    const onGuideToolEvent = useCallback((event: GuideToolEvent) =>
    {
        switch(event.type)
        {
            case GuideToolEvent.SHOW_GUIDE_TOOL:
                setIsVisible(true);
                return;
            case GuideToolEvent.HIDE_GUIDE_TOOL:
                setIsVisible(false);
                return;
            case GuideToolEvent.TOGGLE_GUIDE_TOOL:
                setIsVisible(value => !value);
                return;
            case GuideToolEvent.CREATE_HELP_REQUEST:
                updateSessionState(GuideSessionState.USER_CREATE);
                return;
        }
    }, [ updateSessionState ]);

    useUiEvent(GuideToolEvent.SHOW_GUIDE_TOOL, onGuideToolEvent);
    useUiEvent(GuideToolEvent.HIDE_GUIDE_TOOL, onGuideToolEvent);
    useUiEvent(GuideToolEvent.TOGGLE_GUIDE_TOOL, onGuideToolEvent);
    useUiEvent(GuideToolEvent.CREATE_HELP_REQUEST, onGuideToolEvent);

    useMessageEvent<PerkAllowancesMessageEvent>(PerkAllowancesMessageEvent, event =>
    {
        const parser = event.getParser();

        if(!parser.isAllowed(PerkEnum.USE_GUIDE_TOOL) && isOnDuty)
        {
            setIsOnDuty(false);
            SendMessageComposer(new GuideSessionOnDutyUpdateMessageComposer(false, false, false, false));
        }
    });

    useMessageEvent<GuideOnDutyStatusMessageEvent>(GuideOnDutyStatusMessageEvent, event =>
    {
        const parser = event.getParser();

        setIsOnDuty(parser.onDuty);
        setGuidesOnDuty(parser.guidesOnDuty);
        setHelpersOnDuty(parser.helpersOnDuty);
        setGuardiansOnDuty(parser.guardiansOnDuty);
    });

    useMessageEvent<GuideSessionAttachedMessageEvent>(GuideSessionAttachedMessageEvent, event =>
    {
        const parser = event.getParser();

        setHelpRequestDescription(parser.helpRequestDescription);
        setHelpRequestAverageTime(parser.roleSpecificWaitTime);

        if(parser.asGuide && isOnDuty) updateSessionState(GuideSessionState.GUIDE_ACCEPT);

        if(!parser.asGuide) updateSessionState(GuideSessionState.USER_PENDING);
    });

    useMessageEvent<GuideSessionStartedMessageEvent>(GuideSessionStartedMessageEvent, event =>
    {
        const parser = event.getParser();

        if(isOnDuty)
        {
            setOngoingUserId(parser.requesterUserId);
            setOngoingUsername(parser.requesterName);
            setOngoingFigure(parser.requesterFigure);
            updateSessionState(GuideSessionState.GUIDE_ONGOING, parser.requesterName);
        }
        else
        {
            setOngoingUserId(parser.guideUserId);
            setOngoingUsername(parser.guideName);
            setOngoingFigure(parser.guideFigure);
            updateSessionState(GuideSessionState.USER_ONGOING, parser.guideName);
        }
    });

    useMessageEvent<GuideSessionPartnerIsTypingMessageEvent>(GuideSessionPartnerIsTypingMessageEvent, event =>
    {
        const parser = event.getParser();

        setOngoingIsTyping(parser.isTyping);
    });

    useMessageEvent<GuideSessionMessageMessageEvent>(GuideSessionMessageMessageEvent, event =>
    {
        const parser = event.getParser();

        const messageGroups = [ ...ongoingMessageGroups ];

        let lastGroup = messageGroups[messageGroups.length - 1];

        if(!lastGroup || lastGroup.userId !== parser.senderId)
        {
            lastGroup = new GuideToolMessageGroup(parser.senderId);
            messageGroups.push(lastGroup);
        }

        lastGroup.addChat(new GuideToolMessage(parser.chatMessage));
        setOngoingMessageGroups(messageGroups);
    });

    useMessageEvent<GuideSessionInvitedToGuideRoomMessageEvent>(GuideSessionInvitedToGuideRoomMessageEvent, event =>
    {
        const parser = event.getParser();

        if(parser.roomId !== 0)
        {
            const messageGroups = [ ...ongoingMessageGroups ];

            let lastGroup = messageGroups[messageGroups.length - 1];

            const guideId = (isOnDuty ? GetSessionDataManager().userId : ongoingUserId);

            if(!lastGroup || lastGroup.userId !== guideId)
            {
                lastGroup = new GuideToolMessageGroup(guideId);
                messageGroups.push(lastGroup);
            }

            lastGroup.addChat(new GuideToolMessage(parser.roomName, parser.roomId));
            setOngoingMessageGroups(messageGroups);
        }
    });

    useMessageEvent<GuideSessionEndedMessageEvent>(GuideSessionEndedMessageEvent, event =>
    {
        if(isOnDuty)
        {
            setOngoingUserId(0);
            setOngoingUsername(null);
            setOngoingFigure(null);
            setOngoingIsTyping(false);
            setOngoingMessageGroups([]);
            updateSessionState(GuideSessionState.GUIDE_TOOL_MENU);
        }
        else
        {
            updateSessionState(GuideSessionState.USER_FEEDBACK);
        }
    });

    useMessageEvent<GuideSessionErrorMessageEvent>(GuideSessionErrorMessageEvent, event =>
    {
        const parser = event.getParser();

        // SOMETHING_WRONG_REQUEST = 0, NO_HELPERS_AVAILABLE = 1, NO_GUARDIANS_AVAILABLE = 2

        switch(parser['errorCode'])
        {
            case 0:
                updateSessionState(GuideSessionState.USER_SOMETHING_WRONG);
                break;
            case 1:
            case 2:
                updateSessionState(GuideSessionState.USER_NO_HELPERS);
                break;
        }
    });

    useMessageEvent<GuideSessionDetachedMessageEvent>(GuideSessionDetachedMessageEvent, event =>
    {
        setOngoingUserId(0);
        setOngoingUsername(null);
        setOngoingFigure(null);
        setOngoingIsTyping(false);
        setOngoingMessageGroups([]);

        if(isOnDuty)
        {

            updateSessionState(GuideSessionState.GUIDE_TOOL_MENU);
        }
        else
        {
            updateSessionState(GuideSessionState.USER_THANKS);
        }
    });

    useEffect(() =>
    {
        const linkTracker: ILinkEventTracker = {
            linkReceived: (url: string) =>
            {
                const parts = url.split('/');

                if(parts.length < 2) return;

                switch(parts[1])
                {
                    case 'tour':
                    //Create Tour Request
                        return;
                }
            },
            eventUrlPrefix: 'help/'
        };

        AddLinkEventTracker(linkTracker);

        return () => RemoveLinkEventTracker(linkTracker);
    }, []);

    const processAction = useCallback((action: string) =>
    {
        switch(action)
        {
            case 'close':
                setIsVisible(false);
                setUserRequest('');
                setSessionState(GuideSessionState.GUIDE_TOOL_MENU);
                return;
            case 'toggle_duty':
                if(!isHandlingBullyReports && !isHandlingGuideRequests && !isHandlingHelpRequests)
                {
                    simpleAlert(LocalizeText('guide.help.guide.tool.noqueueselected.message'), null, null, null, LocalizeText('guide.help.guide.tool.noqueueselected.caption'), null);
                    return;
                }

                setIsOnDuty(v =>
                {
                    SendMessageComposer(new GuideSessionOnDutyUpdateMessageComposer(!v, v ? false : isHandlingGuideRequests, v ? false : isHandlingHelpRequests, v ? false : isHandlingBullyReports));
                    return !v;
                });

                return;
            case 'forum_link':
                const url: string = GetConfigurationValue<string>('group.homepage.url', '').replace('%groupid%', GetConfigurationValue<string>('guide.help.alpha.groupid', '0'));
                window.open(url);
                return;
        }
    }, [ isHandlingBullyReports, isHandlingGuideRequests, isHandlingHelpRequests, simpleAlert ]);

    if(!isVisible) return null;

    return (
        <NitroCardView className="nitro-guide-tool" theme="primary-slim">
            <NitroCardHeaderView headerText={ headerText } noCloseButton={ noCloseButton } onCloseClick={ event => processAction('close') } />
            <NitroCardContentView className="text-black">
                { (sessionState === GuideSessionState.GUIDE_TOOL_MENU) &&
                    <GuideToolMenuView guardiansOnDuty={ guardiansOnDuty } guidesOnDuty={ guidesOnDuty } helpersOnDuty={ helpersOnDuty } isHandlingBullyReports={ isHandlingBullyReports } isHandlingGuideRequests={ isHandlingGuideRequests } isHandlingHelpRequests={ isHandlingHelpRequests } isOnDuty={ isOnDuty } processAction={ processAction } setIsHandlingBullyReports={ setIsHandlingBullyReports } setIsHandlingGuideRequests={ setIsHandlingGuideRequests } setIsHandlingHelpRequests={ setIsHandlingHelpRequests } /> }
                { (sessionState === GuideSessionState.GUIDE_ACCEPT) &&
                    <GuideToolAcceptView helpRequestAverageTime={ helpRequestAverageTime } helpRequestDescription={ helpRequestDescription } /> }
                { [ GuideSessionState.GUIDE_ONGOING, GuideSessionState.USER_ONGOING ].includes(sessionState) &&
                    <GuideToolOngoingView isGuide={ isOnDuty } isTyping={ ongoingIsTyping } messageGroups={ ongoingMessageGroups } userFigure={ ongoingFigure } userId={ ongoingUserId } userName={ ongoingUsername } /> }
                { (sessionState === GuideSessionState.USER_CREATE) &&
                    <GuideToolUserCreateRequestView setUserRequest={ setUserRequest } userRequest={ userRequest } /> }
                { (sessionState === GuideSessionState.USER_PENDING) &&
                    <GuideToolUserPendingView helpRequestAverageTime={ helpRequestAverageTime } helpRequestDescription={ helpRequestDescription } /> }
                { (sessionState === GuideSessionState.USER_FEEDBACK) &&
                    <GuideToolUserFeedbackView userName={ ongoingUsername } /> }
                { (sessionState === GuideSessionState.USER_THANKS) &&
                    <GuideToolUserThanksView /> }
                { (sessionState === GuideSessionState.USER_NO_HELPERS) &&
                    <GuideToolUserNoHelpersView /> }
                { (sessionState === GuideSessionState.USER_SOMETHING_WRONG) &&
                    <GuideToolUserSomethingWrogView /> }
            </NitroCardContentView>
        </NitroCardView>
    );
};