using System.Collections.Immutable;
using System.Data;
using Connected.Data.Schema.Sql;
using Connected.Entities.Annotations;

namespace Connected.Data.Schema;

internal class ExistingColumn : ISchemaColumn, IExistingSchemaColumn
{
	public ExistingColumn(ISchema schema)
	{
		Schema = schema;
	}

	private ISchema Schema { get; }

	public string Name { get; set; }

	public DbType DataType { get; set; }

	public bool IsIdentity { get; set; }
	public bool IsVersion { get; set; }

	public bool IsUnique { get; set; }

	public bool IsIndex { get; set; }

	public bool IsPrimaryKey { get; set; }

	public string DefaultValue { get; set; }

	public int MaxLength { get; set; }

	public bool IsNullable { get; set; }

	public string DependencyType { get; set; }

	public string DependencyProperty { get; set; }

	public string Index { get; set; }
	public int Precision { get; set; }
	public int Scale { get; set; }

	public DateKind DateKind { get; set; } = DateKind.DateTime;
	public BinaryKind BinaryKind { get; set; } = BinaryKind.VarBinary;

	public int DatePrecision { get; set; }

	public ImmutableArray<string> QueryIndexColumns(string column)
	{
		if (Schema is not ExistingSchema existing)
			return ImmutableArray<string>.Empty;

		foreach (var index in existing.Indexes)
		{
			if (index.Columns.Contains(column, StringComparer.OrdinalIgnoreCase))
				return index.Columns.ToImmutableArray();
		}

		return ImmutableArray<string>.Empty;
	}
}