using GB5Shared.GenerateAutoNumber;

namespace IceImportBLL.FieldResolvers;

// ValueType = 7 (Auto Number). IceMapDetailsSourceFieldName carries the AutoNumber entity code to
// allocate against (falls back to the row's own EntityCode/DestinationMemberMemberName), mirroring
// how ValueType=1 overloads the same source field for a different purpose.
public class AutoNumberResolver : IIceFieldValueResolver
{
    public int ValueType => 7;

    private readonly AutoNumber _autoNumber;

    public AutoNumberResolver(AutoNumber autoNumber) => _autoNumber = autoNumber;

    public async Task<FieldResolutionResult> ResolveAsync(FieldResolutionContext ctx, CancellationToken ct)
    {
        var entityCode = !string.IsNullOrWhiteSpace(ctx.DetailConfig.IceMapDetailsSourceFieldName)
            ? ctx.DetailConfig.IceMapDetailsSourceFieldName!
            : ctx.DetailConfig.EntityCode ?? ctx.DetailConfig.DestinationMemberMemberName ?? "ICEIMPORT";

        var allocated = await _autoNumber.GetAutoNumber(1, entityCode, ctx.Login).ConfigureAwait(false);
        return FieldResolutionResult.Ok(allocated.StartNumber);
    }
}