using MongoDB.Bson.Serialization.Attributes;

namespace StellaOps.Feedser.Storage.Mongo.Exporting;

[BsonIgnoreExtraElements]
public sealed class ExportStateDocument
{
    [BsonId]
    public string Id { get; set; } = string.Empty;

    [BsonElement("baseExportId")]
    public string? BaseExportId { get; set; }

    [BsonElement("baseDigest")]
    public string? BaseDigest { get; set; }

    [BsonElement("lastFullDigest")]
    public string? LastFullDigest { get; set; }

    [BsonElement("lastDeltaDigest")]
    public string? LastDeltaDigest { get; set; }

    [BsonElement("exportCursor")]
    public string? ExportCursor { get; set; }

    [BsonElement("targetRepo")]
    public string? TargetRepository { get; set; }

    [BsonElement("exporterVersion")]
    public string? ExporterVersion { get; set; }

    [BsonElement("updatedAt")]
    public DateTime UpdatedAt { get; set; }
}

internal static class ExportStateDocumentExtensions
{
    public static ExportStateDocument FromRecord(ExportStateRecord record)
        => new()
        {
            Id = record.Id,
            BaseExportId = record.BaseExportId,
            BaseDigest = record.BaseDigest,
            LastFullDigest = record.LastFullDigest,
            LastDeltaDigest = record.LastDeltaDigest,
            ExportCursor = record.ExportCursor,
            TargetRepository = record.TargetRepository,
            ExporterVersion = record.ExporterVersion,
            UpdatedAt = record.UpdatedAt.UtcDateTime,
        };

    public static ExportStateRecord ToRecord(this ExportStateDocument document)
        => new(
            document.Id,
            document.BaseExportId,
            document.BaseDigest,
            document.LastFullDigest,
            document.LastDeltaDigest,
            document.ExportCursor,
            document.TargetRepository,
            document.ExporterVersion,
            DateTime.SpecifyKind(document.UpdatedAt, DateTimeKind.Utc));
}