import {Buffer} from "buffer";
import {PIID} from "./PIID";
import {GetRecord} from "./GetRecord";
import {AxdrType} from "../asn1.axdr/AxdrType";
import {ReverseByteArrayInputStream} from "../ReverseByteArrayInputStream";
import {ReverseByteArrayOutputStream} from "../ReverseByteArrayOutputStream";


export class GetRequestRecord implements AxdrType{

    dataCode : Buffer | null = null;
    piid : PIID | null = null;
    getRecord : GetRecord | null = null;

    constructor() {
    }

    set_dataCode(dataCode : Buffer){
        this.dataCode = dataCode;
    }

    set_all(piid : PIID, getRecord : GetRecord){
        this.piid = piid;
        this.getRecord = getRecord;
    }

    decode(input: ReverseByteArrayInputStream): number {
        let codeLength = 0;

        this.piid = new PIID();
        this.piid.setNumBit(8);
        codeLength += this.piid.decode(input);

        this.getRecord = new GetRecord();
        codeLength += this.getRecord.decode(input);

        return codeLength;
    }

    encode(output: ReverseByteArrayOutputStream): number {
        let codeLength;

        if (this.dataCode != null) {
            codeLength = this.dataCode.length;
            for (let i = this.dataCode.length - 1; i >= 0; i--) {
                output.write(this.dataCode[i]);
            }
        } else {
            if(this.piid != null && this.getRecord != null){
                codeLength = 0;
                codeLength += this.getRecord.encode(output);

                codeLength += this.piid.encode(output);
            }else{
                throw new Error("piid or getrecord is null");
            }

        }

        return codeLength;
    }

    encodeAndSave(encodingSizeGuess: number) {
        let revOStream = new ReverseByteArrayOutputStream();
        revOStream.setBufSize(encodingSizeGuess);
        this.encode(revOStream);
        this.dataCode = revOStream.getArray();
    }

    toString(): string {
        if (this.piid != null && this.getRecord != null) {
            return "sequence: {"+ "piid: " + this.piid + ", getRecord: " + this.getRecord  + "}";
        } else {
            return "piid || getrecord is null";
        }
    }


}