/*
 * fixparser
 * https://gitlab.com/logotype/fixparser.git
 *
 * Copyright 2019 Victor Norgren
 * Released under the MIT license
 */
import { EventEmitter } from 'events';

import * as EncryptMethod from './constants/ConstantsEncryptMethod';
import * as Fields from './constants/ConstantsField';
import * as HandlInst from './constants/ConstantsHandlInst';
import * as Messages from './constants/ConstantsMessage';
import * as OrderTypes from './constants/ConstantsOrderTypes';
import * as Side from './constants/ConstantsSide';
import * as TimeInForce from './constants/ConstantsTimeInForce';
import Field from './fields/Field';
import FIXParserBase from './FIXParserBase';
import FIXParserClientSocket from './handler/FIXParserClientSocket';
import FIXParserClientWebsocket from './handler/FIXParserClientWebsocket';
import Message from './message/Message';
import { timestamp } from './util/util';

type Protocol = 'tcp' | 'websocket';
type Params = {
    host: string,
    port: number,
    protocol: Protocol,
    sender: string,
    target: string,
    heartbeatInterval: number,
    fixVersion: string
}

export default class FIXParser extends EventEmitter {
    public fixParserBase: FIXParserBase = new FIXParserBase();
    public clientHandler!: FIXParserClientSocket | FIXParserClientWebsocket;
    public host: string | null = null;
    public port: number | null = null;
    public sender: string | null = null;
    public target: string | null = null;
    public messageSequence: number = 1;
    public heartBeatInterval: number | undefined;
    public heartBeatIntervalId: any | null = null;
    public fixVersion: string = 'FIX.5.0SP2';

    public connect(options: Params) {
        if (options.protocol === 'tcp') {
            this.clientHandler = new FIXParserClientSocket(this, this);
        } else if (options.protocol === 'websocket') {
            this.clientHandler = new FIXParserClientWebsocket(this, this);
        }
        this.clientHandler.host = options.host;
        this.clientHandler.port = options.port;
        this.clientHandler.sender = options.sender;
        this.clientHandler.target = options.target;
        this.clientHandler.heartBeatInterval = options.heartbeatInterval;
        this.clientHandler.fixVersion = options.fixVersion;
        this.clientHandler.connect();
    }

    public getNextTargetMsgSeqNum() {
        return this.messageSequence;
    }

    public setNextTargetMsgSeqNum(nextMsgSeqNum: number) {
        this.messageSequence = nextMsgSeqNum;
        return this.messageSequence;
    }

    public getTimestamp(dateObject = new Date()) {
        return timestamp(dateObject);
    }

    public createMessage(...fields: Field[]) {
        return new Message(this.fixVersion, ...fields);
    }

    public parse(data: string): Message[] {
        return this.fixParserBase.parse(data);
    }

    public send(message: Message) {
        this.clientHandler.send(message);
    }
}

export { Field };
export { Fields };
export { Message };
export { Messages };
export { Side };
export { OrderTypes };
export { HandlInst };
export { TimeInForce };
export { EncryptMethod };

/**
 * Export global to the window object.
 */
(global as any).FIXParser = FIXParser;