using System;
using System.Text.Json;

namespace StellaOps.Scanner.EntryTrace;

internal static class EntryTraceCacheSerializer
{
    public const string CurrentVersion = "entrytrace.v1";

    public static byte[] Serialize(EntryTraceCacheEnvelope envelope)
    {
        if (envelope is null)
        {
            throw new ArgumentNullException(nameof(envelope));
        }

        return JsonSerializer.SerializeToUtf8Bytes(envelope);
    }

    public static EntryTraceCacheEnvelope Deserialize(byte[] payload)
    {
        if (payload is null || payload.Length == 0)
        {
            throw new ArgumentException("Payload cannot be empty.", nameof(payload));
        }

        var envelope = JsonSerializer.Deserialize<EntryTraceCacheEnvelope>(payload);
        if (envelope is null)
        {
            throw new InvalidOperationException("Failed to deserialize entry trace cache envelope.");
        }

        return envelope;
    }
}