import * as plugins from "./smartsocket.plugins";
import * as helpers from "./smartsocket.helpers";

// import interfaces
import { ISocketFunctionCall } from "./smartsocket.classes.socketfunction";

// import classes
import { Objectmap } from "lik";
import { SocketFunction } from "./smartsocket.classes.socketfunction";
import { SocketConnection } from "./smartsocket.classes.socketconnection";

// export interfaces
export type TSocketRequestStatus = "new" | "pending" | "finished";
export type TSocketRequestSide = "requesting" | "responding";

/**
 * interface of constructor of class SocketRequest
 */
export interface SocketRequestConstructorOptions {
    side: TSocketRequestSide;
    originSocketConnection: SocketConnection;
    shortId: string;
    funcCallData?: ISocketFunctionCall;
};

/**
 * request object that is sent initially and may or may not receive a response
 */
export interface ISocketRequestDataObject {
    funcCallData: ISocketFunctionCall;
    shortId: string;
    responseTimeout?: number;
};

//export objects
export let allSocketRequests = new Objectmap<SocketRequest>();

// export classes
export class SocketRequest {
    status: TSocketRequestStatus = "new";
    side: TSocketRequestSide;
    shortid: string;
    originSocketConnection: SocketConnection;
    funcCallData: ISocketFunctionCall
    done = plugins.q.defer();
    constructor(optionsArg: SocketRequestConstructorOptions) {
        this.side = optionsArg.side;
        this.shortid = optionsArg.shortId;
        this.funcCallData = optionsArg.funcCallData;
        allSocketRequests.add(this);
    };

    // requesting --------------------------

    /**
     * dispatches a socketrequest from the requesting to the receiving side
     */
    dispatch() {
        let requestData: ISocketRequestDataObject = {
            funcCallData: this.funcCallData,
            shortId: this.shortid
        }
        this.originSocketConnection.socket.emit("function", requestData);
        return this.done.promise;
    };

    /**
     * handles the response that is received by the requesting side
     */
    handleResponse(responseDataArg: ISocketRequestDataObject) {
        this.done.resolve(responseDataArg);
        allSocketRequests.remove(this);
    }

    // responding --------------------------

    /**
     * creates the response on the responding side
     */
    createResponse() {
        let targetSocketFunction: SocketFunction = helpers.getSocketFunctionByName(this.funcCallData.funcName);
        targetSocketFunction.invoke(this.funcCallData)
            .then((resultData) => {
                let requestData: ISocketRequestDataObject = {
                    funcCallData: resultData,
                    shortId: this.shortid
                }
                this.originSocketConnection.socket.emit("functionResponse",requestData);
                allSocketRequests.remove(this);
            });
    }
};