import {Buffer} from "buffer";
import {Unsigned8} from "./Unsigned8";
import {AxdrType} from "../asn1.axdr/AxdrType";
import {ReverseByteArrayInputStream} from "../ReverseByteArrayInputStream";
import {ReverseByteArrayOutputStream} from "../ReverseByteArrayOutputStream";


export class Time implements AxdrType{

    dataCode: Buffer | null = null;
    hour: Unsigned8 | null = null;
    minute: Unsigned8 | null = null;
    second: Unsigned8 | null = null;

    constructor() {
    }

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

    set_time(hour: Unsigned8, minute: Unsigned8,
                  second: Unsigned8) {
        this.hour = hour;
        this.minute = minute;
        this.second = second;
    }

    setHour(hour: Unsigned8){
        this.hour = hour;
    }

    setMinute(minute: Unsigned8){
        this.minute = minute;
    }

    setSecond(second: Unsigned8){
        this.second = second;
    }

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

        this.hour = new Unsigned8();
        this.hour.set_const()
        codeLength += this.hour.decode(input);

        this.minute = new Unsigned8();
        this.minute.set_const()
        codeLength += this.minute.decode(input);

        this.second = new Unsigned8();
        this.second.set_const()
        codeLength += this.second.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.hour != null && this.minute != null
                && this.second != null){
                codeLength = 0;
                codeLength += this.second.encode(output);
                codeLength += this.minute.encode(output);
                codeLength += this.hour.encode(output);
            }else{
                throw new Error("time 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.hour != null && this.minute != null && this.second != null){
            return "sequence: {" + "hour: " + this.hour + ", minute: " + this.minute + ", second: " + this.second  + "}";
        }else{
            return "time is null";
        }
    }

}