import ChatListViewModel from "./chatListViewModel";
import TaskPageViewModel from "../Pages/taskPageViewModel";
import SettingsPageViewModel from "../Pages/settingsPageViewModel";
import MessagePageViewModel from "../Pages/messagePageViewModel";
import CalendarPageViewModel, {
    CALENDAR_EVENT_BOARD_ID,
} from "../Pages/calendarPageViewModel";
import SettingsViewModel from "../Global/settingsViewModel";
import NotificationViewModel from "../Global/notificationViewModel";
import CoreViewModel, { Context, ContextHost } from "../Global/coreViewModel";
import ContactListViewModel from "../Global/contactViewModel";
import ConnectionViewModel from "../Global/connectionViewModel";
import * as React from "../../react";
import { Colors } from "../../colors";
import { CommonKeys } from "../../View/keystrokes";
import { Entry } from "../../View/Components/option";
import StorageModel, {
    StorageModelSubPaths,
    filePaths,
} from "../../Model/Global/storageModel";
import ChatModel, {
    ChatMessage,
    ChatMessageReaction,
} from "../../Model/Chat/chatModel";
import FileTransferViewModel from "../Global/fileTransferViewModel";

export default class ChatViewModel extends ContextHost<ChatPageTypes> {
    calendarViewModel: CalendarPageViewModel;
    taskPageViewModel: TaskPageViewModel;
    messagePageViewModel: MessagePageViewModel;
    settingsPageViewModel: SettingsPageViewModel;

    // state
    displayedColor: React.State<Colors> = new React.State<any>(Colors.Standard);
    selectedPage: React.State<ChatPageTypes> = new React.State<any>(
        ChatPageTypes.Messages,
    );
    pageContexts = new React.MapState<Context>();

    index: React.State<number> = new React.State(0);
    hasUnreadMessages: React.State<boolean> = new React.State(false);

    taskBoardSuggestions: React.MapState<Entry> = new React.MapState();

    // context
    get isOpen(): boolean {
        return this.chatListViewModel.selectedChat.value == this;
    }

    get contextSelection(): ChatPageTypes {
        return this.selectedPage.value;
    }

    // view
    open = (): void => {
        this.coreViewModel.context = this;
        this.chatListViewModel.openChat(this);
        //this.selectedPage.callSubscriptions();
    };

    openPage = (page: ChatPageTypes): void => {
        this.closeCurrentContext();
        this.selectedPage.value = page;
    };

    setColor = (color: Colors): void => {
        this.setDisplayedColor(color);
        this.chatModel.setColor(color);
    };

    setDisplayedColor = (color: Colors): void => {
        this.displayedColor.value = color;
    };

    resetColor = (): void => {
        this.displayedColor.value = this.settingsPageViewModel.color.value;
    };

    updateIndex = (): void => {
        const index: number =
            this.chatListViewModel.chatIndexManager.getIndex(this);
        this.index.value = index;
    };

    share = (): void => {
	this.fileTransferViewModel.showDirectionSelectionModal();
    }

    // load
    loadPageSelection = (): void => {
        const path: string[] = StorageModel.getPath(
            StorageModelSubPaths.Chat,
            filePaths.chat.lastUsedPage(this.chatModel.id),
        );
        const lastUsedPage: string | null =
            this.coreViewModel.storageModel.read(path);
        if (lastUsedPage != null) {
            this.openPage(lastUsedPage as ChatPageTypes);
        }

        this.selectedPage.subscribeSilent((newPage) => {
            this.coreViewModel.storageModel.write(path, newPage);
            this.resetColor();
        });
    };

    loadInfo = (): void => {
        this.updateReadStatus();
        this.taskBoardSuggestions.set(CALENDAR_EVENT_BOARD_ID, [
            CALENDAR_EVENT_BOARD_ID,
            this.coreViewModel.translations.chatPage.calendar.eventsBoard,
        ]);
    };

    updateReadStatus = (): void => {
        if (
            this.chatListViewModel.selectedChat.value == this &&
            this.selectedPage.value == ChatPageTypes.Messages
        ) {
            this.chatModel.setReadStatus(false);
        }
        this.hasUnreadMessages.value = this.chatModel.info.hasUnreadMessages;
    };

    setReadStatus = (hasUnreadMessages: boolean): void => {
        this.chatModel.setReadStatus(hasUnreadMessages);
        this.hasUnreadMessages.value = hasUnreadMessages;
    };

    subscribeReadStatus = (): void => {
        React.createProxyState(
            [this.selectedPage, this.chatListViewModel.selectedChat],
            () => {
                if (this.chatListViewModel.selectedChat.value != this) return;
                if (this.selectedPage.value != ChatPageTypes.Messages) return;
                this.setReadStatus(false);
            },
        );
    };

    // exit
    close = (): void => {
        this.coreViewModel.closeContext(this.contextId);
    };

    handleContextClose = (): void => {
        this.chatListViewModel.closeChat();
    };

    // init
    constructor(
        readonly coreViewModel: CoreViewModel,
        public readonly chatModel: ChatModel,
        public readonly settingsViewModel: SettingsViewModel,
        public readonly notificationViewModel: NotificationViewModel,
        public readonly connectionViewModel: ConnectionViewModel,
        public readonly chatListViewModel: ChatListViewModel,
        public readonly contactListViewModel: ContactListViewModel,
	public readonly fileTransferViewModel: FileTransferViewModel,
    ) {
        super("chat", coreViewModel);

        // page viewModels
        this.calendarViewModel = new CalendarPageViewModel(
            coreViewModel,
            this,
            this.chatModel.fileModel.boardsAndTasksModel.calendarModel,
            this.chatModel.fileModel.boardsAndTasksModel,
        );
        this.taskPageViewModel = new TaskPageViewModel(
            this.coreViewModel,
            this,
            this.chatModel.fileModel.boardsAndTasksModel,
        );
        this.messagePageViewModel = new MessagePageViewModel(
            this.coreViewModel,
            this,
            this.contactListViewModel,
        );
        this.settingsPageViewModel = new SettingsPageViewModel(
            this.coreViewModel,
            this,
        );

        // handlers
        chatModel.chatMessageHandlerManager.setHandler(
            this.chatModel.id,
            (chatMessage: ChatMessage) => {
                this.messagePageViewModel.showChatMessage(chatMessage);
                this.updateReadStatus();

                this.notificationViewModel.showNotification(chatMessage);
            },
        );
        chatModel.reactionHandlerManager.setHandler(
            this.chatModel.id,
            (reaction: ChatMessageReaction) => {
                this.messagePageViewModel.handleReaction(reaction);
            },
        );
        chatModel.changeHandlerManager.setHandler(
            this.chatModel.id,
            this.settingsPageViewModel.updateData,
        );

        // load
        this.loadPageSelection();
        this.resetColor();
        this.loadInfo();
        this.subscribeReadStatus();

        // keystrokes
        this.registerKeyStroke(CommonKeys.Home, this.close);
        this.registerKeyStroke("u", () =>
            this.openPage(ChatPageTypes.Messages),
        );
        this.registerKeyStroke("i", () => this.openPage(ChatPageTypes.Tasks));
        this.registerKeyStroke("o", () =>
            this.openPage(ChatPageTypes.Calendar),
        );
        this.registerKeyStroke(CommonKeys.Settings, () =>
            this.openPage(ChatPageTypes.Settings),
        );

        // context
        this.chatListViewModel.selectedChat.subscribeSilent(
            this.updateContexts,
        );
        this.selectedPage.subscribeSilent(this.updateContexts);
    }
}

// types
export enum ChatPageTypes {
    Settings = "settings",
    Messages = "messages",
    Tasks = "tasks",
    Calendar = "calendar",
}