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/// import
import { Buffer } from "node:buffer";
/// util
import { Answer } from "./answer.ts";import { Header } from "./header.ts";import { Question } from "./question.ts";
import {  decodeList,  encodeList,  encodingLengthList} from "./utility/helpers.ts";


/// export
export class DEFAULT {  decodeBytes = 0;  encodeBytes = 0;
  decode(buf, offset?) {    if (!offset)      offset = 0;
    const answer = new Answer();    const header = new Header();    const oldOffset = offset;    const question = new Question();    const result = header.decode(buf, offset);
    offset += header.decodeBytes;    offset = decodeList(result.questions, question, buf, offset);    offset = decodeList(result.answers, answer, buf, offset);    offset = decodeList(result.authorities, answer, buf, offset);    offset = decodeList(result.additionals, answer, buf, offset);
    this.decodeBytes = offset - oldOffset;    return result;  }
  encode(result, buf?, offset?) {    const allocing = !buf;
    if (allocing)      buf = Buffer.alloc(this.encodingLength(result));
    if (!offset)      offset = 0;
    const answer = new Answer();    const header = new Header();    const oldOffset = offset;    const question = new Question();
    if (!result.questions)      result.questions = [];
    if (!result.answers)      result.answers = [];
    if (!result.authorities)      result.authorities = [];
    if (!result.additionals)      result.additionals = [];
    header.encode(result, buf, offset);
    offset += header.encodeBytes;    offset = encodeList(result.questions, question, buf, offset);    offset = encodeList(result.answers, answer, buf, offset);    offset = encodeList(result.authorities, answer, buf, offset);    offset = encodeList(result.additionals, answer, buf, offset);
    this.encodeBytes = offset - oldOffset;
    // just a quick sanity check    if (allocing && this.encodeBytes !== buf.length)      return buf.slice(0, this.encodeBytes);
    return buf;  }
  encodingLength(result) {    const answer = new Answer();    const header = new Header();    const question = new Question();
    return header.encodingLength() +      encodingLengthList(result.questions || [], question) +      encodingLengthList(result.answers || [], answer) +      encodingLengthList(result.authorities || [], answer) +      encodingLengthList(result.additionals || [], answer);  }}