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import { readInt16BE, readInt32BE } from "./utils.ts";
export class PacketReader {  private offset: number = 0;  private decoder: TextDecoder = new TextDecoder();
  constructor(private buffer: Uint8Array) {}
  readInt16(): number {    const value = readInt16BE(this.buffer, this.offset);    this.offset += 2;    return value;  }
  readInt32(): number {    const value = readInt32BE(this.buffer, this.offset);    this.offset += 4;    return value;  }
  readByte(): number {    return this.readBytes(1)[0];  }
  readBytes(length: number): Uint8Array {    const start = this.offset;    const end = start + length;    const slice = this.buffer.slice(start, end);    this.offset = end;    return slice;  }
  readString(length: number): string {    const bytes = this.readBytes(length);    return this.decoder.decode(bytes);  }
  readCString(): string {    const start = this.offset;    // find next null byte    const end = this.buffer.indexOf(0, start);    const slice = this.buffer.slice(start, end);    // add +1 for null byte    this.offset = end + 1;    return this.decoder.decode(slice);  }}