using System.Text;

namespace Connected.Data.Schema.Sql
{
	internal class PrimaryKeyAdd : ColumnTransaction
	{
		public PrimaryKeyAdd(ISchemaColumn column) : base(column)
		{

		}

		protected override async Task OnExecute()
		{
			await Context.Execute(CommandText);
		}

		private string CommandText
		{
			get
			{
				var text = new StringBuilder();

				text.AppendLine($"ALTER TABLE {Escape(Context.Schema.SchemaName(), Context.Schema.Name)}");
				text.AppendLine($"ADD CONSTRAINT {Context.GenerateConstraintName(Context.Schema.SchemaName(), Context.Schema.Name, ConstraintNameType.PrimaryKey)}");
				text.AppendLine($"PRIMARY KEY CLUSTERED ({Escape(Column.Name)}) ON {Escape(SchemaExtensions.FileGroup)}");

				return text.ToString();
			}
		}
	}
}