PlanTempusApp/Database/RolesPermissionSystem/Setup.cs

using System.Data;
using Database.Common;
using Insight.Database;

namespace Database.RolesPermissionSystem
{
	/// <summary>
	/// This is by purpose not async await
	/// It is intended that this is created with the correct Application User, which is why the schema name is omitted.
	/// </summary>
	public class Setup
	{
		IDbConnection _db;

		public Setup(IDbConnection db)
		{
			_db = db;
		}

		/// <summary>
		/// Creates the system tables in the specified schema within a transaction.
		/// </summary>
		/// <param name="schema">The schema name where the tables will be created.</param>
		public void CreateSystem()
		{

			//if (!Validations.IsValidSchemaName(_schema))
			//    throw new ArgumentException("Invalid schema name", _schema);

			using (var transaction = _db.BeginTransaction())
			{
				try
				{
					CreateRolesTable();
					CreatePermissionsTable();
					CreatePermissionTypesTable();
					CreateRolePermissionsTable();

					transaction.Commit();
				}
				catch (Exception ex)
				{
					transaction.Rollback();
					throw new InvalidOperationException("Failed to create system tables.", ex);
				}
			}
		}


		private void ExecuteSql(string sql)
		{
			_db.ExecuteSql(sql);
		}

		private void CreatePermissionTypesTable()
		{
			var sql = $@"
            CREATE TABLE IF NOT EXISTS permission_types (
                id SERIAL PRIMARY KEY,
                name VARCHAR(100) NOT NULL UNIQUE
            )";
			ExecuteSql(sql);
		}

		private void CreatePermissionsTable()
		{
			var sql = $@"
            CREATE TABLE IF NOT EXISTS permissions (
                id SERIAL PRIMARY KEY,
                name VARCHAR(100) NOT NULL UNIQUE,
                type_id INTEGER NOT NULL,
                FOREIGN KEY (type_id) REFERENCES permission_types(id)
            )";
			ExecuteSql(sql);
		}

		private void CreateRolesTable()
		{
			var sql = $@"
            CREATE TABLE IF NOT EXISTS roles (
                id SERIAL PRIMARY KEY,
                name VARCHAR(100) NOT NULL UNIQUE
            )";
			ExecuteSql(sql);
		}

		private void CreateRolePermissionsTable()
		{
			var sql = $@"
            CREATE TABLE IF NOT EXISTS role_permissions (
                role_id INTEGER NOT NULL,
                permission_id INTEGER NOT NULL,
                PRIMARY KEY (role_id, permission_id),
                FOREIGN KEY (role_id) REFERENCES roles(id),
                FOREIGN KEY (permission_id) REFERENCES permissions(id)
            )";
			ExecuteSql(sql);
		}
	}
}