using System.Text.Json;
using ComplianceDAL.DTO.GSTReturn;

namespace ComplianceSL;

// Deserializes the GSTHeader request header into a GSTHeaderDTO — mirrors how BaseEndpoint
// deserializes the Login header into a LoginDTO, but kept local to Compliance's Returns endpoints
// (a Compliance-specific concept) rather than added to the shared, cross-module BaseEndpoint class.
public static class GSTHeaderParser
{
    private static readonly JsonSerializerOptions Options = new() { PropertyNameCaseInsensitive = true };

    public static GSTHeaderDTO Parse(string? json)
    {
        if (string.IsNullOrWhiteSpace(json)) return new GSTHeaderDTO();

        try
        {
            return JsonSerializer.Deserialize<GSTHeaderDTO>(json, Options) ?? new GSTHeaderDTO();
        }
        catch
        {
            return new GSTHeaderDTO();
        }
    }
}