using System.Data;
using Connected.Annotations;
using Connected.Data.Storage;
using Connected.ServiceModel.Client.Data.Remote;
using Microsoft.Data.SqlClient;

namespace Connected.ServiceModel.Client.Data;

[ServiceRegistration(ServiceRegistrationMode.Auto, ServiceRegistrationScope.Transient)]
internal sealed class TableDataConnection : DatabaseConnection
{
	public TableDataConnection(RemoteTableService tables, ICancellationContext context) : base(context)
	{
		Tables = tables;
	}
	private RemoteTableService Tables { get; }

	protected override void SetupParameters(IStorageCommand command, IDbCommand cmd)
	{
		if (cmd.Parameters.Count > 0)
		{
			foreach (SqlParameter i in cmd.Parameters)
				i.Value = DBNull.Value;

			return;
		}

		if (command.Operation.Parameters is null)
			return;

		foreach (var i in command.Operation.Parameters)
		{
			cmd.Parameters.Add(new SqlParameter
			{
				ParameterName = i.Name,
				DbType = i.Type,
				Direction = i.Direction
			});
		}
	}

	protected override object GetParameterValue(IDbCommand command, string parameterName)
	{
		if (command is SqlCommand cmd)
			return cmd.Parameters[parameterName].Value;

		return null;
	}

	protected override void SetParameterValue(IDbCommand command, string parameterName, object value)
	{
		if (command is SqlCommand cmd)
			cmd.Parameters[parameterName].Value = value;
	}

	protected override async Task<IDbConnection> OnCreateConnection()
	{
		await Task.CompletedTask;

		return new TableConnection(Tables, ConnectionString);
	}
}