/* ========================================================================
 * Copyright (c) 2005-2026 The OPC Foundation, Inc. All rights reserved.
 *
 * OPC Foundation MIT License 1.00
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * The complete license agreement can be found here:
 * http://opcfoundation.org/License/MIT/1.00/
 * ======================================================================*/

using System.Linq;
using NUnit.Framework;

namespace Opc.Ua.Server.Tests
{
    [TestFixture]
    [Category("Identity")]
    public class RoleBasedIdentityTests
    {
        [Test]
        public void RoleEqualityOperatorsAndToStringUseNameAndRoleId()
        {
            var role = new Role(new ExpandedNodeId(new NodeId(5001)), "Custom");
            var same = new Role(new ExpandedNodeId(new NodeId(5001)), "Custom");
            var different = new Role(new ExpandedNodeId(new NodeId(5002)), "Other");
            var derived = new DerivedRole(new ExpandedNodeId(new NodeId(5001)), "Custom");
            Role nullRole = null!;

            Assert.That(role, Is.Not.EqualTo(nullRole));
            Assert.That(role, Is.Not.EqualTo(derived));
            Assert.That(role, Is.EqualTo(same));
            Assert.That(role.GetHashCode(), Is.EqualTo(same.GetHashCode()));
            Assert.That(role.ToString(), Is.EqualTo("Custom"));
            Assert.That(AreEqual(nullRole, nullRole), Is.True);
            Assert.That(AreEqual(nullRole, role), Is.False);
            Assert.That(AreNotEqual(role, different), Is.True);
        }

        [Test]
        public void RoleBasedIdentityMergesNestedRolesAndForwardsInnerIdentityProperties()
        {
            NamespaceTable namespaces = CreateNamespaceTable();
            var inner = new UserIdentity("operator", []);
            var first = new RoleBasedIdentity(inner, [Role.Observer], namespaces);

            RoleBasedIdentity second = first.WithAdditionalRoles(
                [Role.Operator],
                namespaces);

            Assert.That(second.Roles.Select(r => r.Name), Does.Contain(Role.Observer.Name));
            Assert.That(second.Roles.Select(r => r.Name), Does.Contain(Role.Operator.Name));
            Assert.That(
                second.GrantedRoleIds.ToArray(),
                Does.Contain(ExpandedNodeId.ToNodeId(Role.Observer.RoleId, namespaces)));
            Assert.That(
                second.GrantedRoleIds.ToArray(),
                Does.Contain(ExpandedNodeId.ToNodeId(Role.Operator.RoleId, namespaces)));
            Assert.That(second.DisplayName, Is.EqualTo(inner.DisplayName));
            Assert.That(second.PolicyId, Is.EqualTo(inner.PolicyId));
            Assert.That(second.TokenType, Is.EqualTo(inner.TokenType));
            Assert.That(second.IssuedTokenType, Is.EqualTo(inner.IssuedTokenType));
            Assert.That(second.SupportsSignatures, Is.EqualTo(inner.SupportsSignatures));
            Assert.That(second.TokenHandler, Is.SameAs(inner.TokenHandler));
        }

        private static NamespaceTable CreateNamespaceTable()
        {
            var namespaces = new NamespaceTable();
            namespaces.Append(Ua.Namespaces.OpcUa);
            return namespaces;
        }

        private static bool AreEqual(Role lhs, Role rhs)
        {
            return lhs == rhs;
        }

        private static bool AreNotEqual(Role lhs, Role rhs)
        {
            return lhs != rhs;
        }

        private sealed class DerivedRole : Role
        {
            public DerivedRole(ExpandedNodeId roleId, string name)
                : base(roleId, name)
            {
            }
        }
    }
}