using System.Data;
using JdeScoping.DataSync.Generated;

namespace JdeScoping.DataSync.IntegrationTests.Infrastructure;

/// <summary>
/// IDataReader implementation for BulkMergeTestEntity.
/// </summary>
public sealed class BulkMergeTestEntityDataReader : AsyncEnumerableDataReader<BulkMergeTestEntity>
{
    private static readonly string[] _columnNames = ["Id", "Name", "Amount", "LastUpdateDt"];
    private static readonly Type[] _columnTypes = [typeof(int), typeof(string), typeof(decimal), typeof(DateTime)];

    public BulkMergeTestEntityDataReader(IAsyncEnumerable<BulkMergeTestEntity> source) : base(source) { }

    protected override string[] ColumnNames => _columnNames;

    public static IReadOnlyList<string> GetColumnNames() => _columnNames;

    protected override object GetColumnValue(int ordinal)
    {
        var entity = Current!;
        return ordinal switch
        {
            0 => entity.Id,
            1 => entity.Name,
            2 => entity.Amount ?? (object)DBNull.Value,
            3 => entity.LastUpdateDt,
            _ => throw new IndexOutOfRangeException()
        };
    }

    protected override Type GetColumnType(int ordinal) => _columnTypes[ordinal];
}