import {HexLengthDelimitedInt} from "./hexLengthDelimitedInt.impl";

function processSerializedString(input: string, offset: number): { length: number, value: string, nextOffset: number } {
    const lengthResult = HexLengthDelimitedInt.deserialize(input, offset);
    offset = lengthResult.nextOffset;
    const value = input.slice(offset, offset + lengthResult.number);
    offset += lengthResult.number;
    return {length: lengthResult.number, value, nextOffset: offset};
}

export function serializeTagValue(tag: string, value: string): string {
    const serializedTag = HexLengthDelimitedInt.serialize(tag.length) + tag;
    const serializedValue = HexLengthDelimitedInt.serialize(value.length) + value;
    return serializedTag + serializedValue + '\n';
}

export function deserializeTagValue(input: string, offset: number): { tag: string, value: string, nextOffset: number } {
    const tagResult = processSerializedString(input, offset);
    offset = tagResult.nextOffset;

    const valueResult = processSerializedString(input, offset);
    offset = valueResult.nextOffset;

    return {tag: tagResult.value, value: valueResult.value, nextOffset: offset};
}