using Zinnia.Action;

namespace Test.Zinnia.Action
{
    using NUnit.Framework;
    using Test.Zinnia.Utility.Mock;
    using UnityEngine;

    public class StateEmitterTest
    {
        private GameObject containingObject;
        private StateEmitter subject;
        private GameObject actionObject;
        private BooleanAction action;

        [SetUp]
        public void SetUp()
        {
            containingObject = new GameObject("StateEmitterTest");
            subject = containingObject.AddComponent<StateEmitter>();
            actionObject = new GameObject("StateEmitterTest");
            action = actionObject.AddComponent<BooleanAction>();
        }

        [TearDown]
        public void TearDown()
        {
            Object.DestroyImmediate(containingObject);
            Object.DestroyImmediate(actionObject);
        }

        [Test]
        public void Process()
        {
            UnityEventListenerMock activatedListenerMock = new UnityEventListenerMock();
            UnityEventListenerMock deactivatedListenerMock = new UnityEventListenerMock();
            UnityEventListenerMock changedListenerMock = new UnityEventListenerMock();

            action.Activated.AddListener(activatedListenerMock.Listen);
            action.Deactivated.AddListener(deactivatedListenerMock.Listen);
            action.ValueChanged.AddListener(changedListenerMock.Listen);

            subject.Action = action;

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsFalse(changedListenerMock.Received);

            action.Receive(true);

            Assert.IsTrue(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsTrue(changedListenerMock.Received);

            activatedListenerMock.Reset();
            deactivatedListenerMock.Reset();
            changedListenerMock.Reset();

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsFalse(changedListenerMock.Received);

            subject.Process();

            Assert.IsTrue(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsTrue(changedListenerMock.Received);

            activatedListenerMock.Reset();
            deactivatedListenerMock.Reset();
            changedListenerMock.Reset();

            action.Receive(false);

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsTrue(deactivatedListenerMock.Received);
            Assert.IsTrue(changedListenerMock.Received);

            activatedListenerMock.Reset();
            deactivatedListenerMock.Reset();
            changedListenerMock.Reset();

            subject.Process();

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsTrue(deactivatedListenerMock.Received);
            Assert.IsTrue(changedListenerMock.Received);
        }

        [Test]
        public void ProcessNoAction()
        {
            UnityEventListenerMock activatedListenerMock = new UnityEventListenerMock();
            UnityEventListenerMock deactivatedListenerMock = new UnityEventListenerMock();
            UnityEventListenerMock changedListenerMock = new UnityEventListenerMock();

            action.Activated.AddListener(activatedListenerMock.Listen);
            action.Deactivated.AddListener(deactivatedListenerMock.Listen);
            action.ValueChanged.AddListener(changedListenerMock.Listen);

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsFalse(changedListenerMock.Received);

            action.Receive(true);

            Assert.IsTrue(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsTrue(changedListenerMock.Received);

            activatedListenerMock.Reset();
            deactivatedListenerMock.Reset();
            changedListenerMock.Reset();

            subject.Process();

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsFalse(changedListenerMock.Received);
        }

        [Test]
        public void ProcessInactiveGameObject()
        {
            UnityEventListenerMock activatedListenerMock = new UnityEventListenerMock();
            UnityEventListenerMock deactivatedListenerMock = new UnityEventListenerMock();
            UnityEventListenerMock changedListenerMock = new UnityEventListenerMock();

            action.Activated.AddListener(activatedListenerMock.Listen);
            action.Deactivated.AddListener(deactivatedListenerMock.Listen);
            action.ValueChanged.AddListener(changedListenerMock.Listen);

            subject.Action = action;
            subject.gameObject.SetActive(false);

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsFalse(changedListenerMock.Received);

            action.Receive(true);

            Assert.IsTrue(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsTrue(changedListenerMock.Received);

            activatedListenerMock.Reset();
            deactivatedListenerMock.Reset();
            changedListenerMock.Reset();

            subject.Process();

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsFalse(changedListenerMock.Received);
        }

        [Test]
        public void ProcessInactiveComponent()
        {
            UnityEventListenerMock activatedListenerMock = new UnityEventListenerMock();
            UnityEventListenerMock deactivatedListenerMock = new UnityEventListenerMock();
            UnityEventListenerMock changedListenerMock = new UnityEventListenerMock();

            action.Activated.AddListener(activatedListenerMock.Listen);
            action.Deactivated.AddListener(deactivatedListenerMock.Listen);
            action.ValueChanged.AddListener(changedListenerMock.Listen);

            subject.Action = action;
            subject.enabled = false;

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsFalse(changedListenerMock.Received);

            action.Receive(true);

            Assert.IsTrue(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsTrue(changedListenerMock.Received);

            activatedListenerMock.Reset();
            deactivatedListenerMock.Reset();
            changedListenerMock.Reset();

            subject.Process();

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsFalse(changedListenerMock.Received);
        }

        [Test]
        public void ProcessInactiveAction()
        {
            UnityEventListenerMock activatedListenerMock = new UnityEventListenerMock();
            UnityEventListenerMock deactivatedListenerMock = new UnityEventListenerMock();
            UnityEventListenerMock changedListenerMock = new UnityEventListenerMock();

            action.Activated.AddListener(activatedListenerMock.Listen);
            action.Deactivated.AddListener(deactivatedListenerMock.Listen);
            action.ValueChanged.AddListener(changedListenerMock.Listen);

            subject.Action = action;

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsFalse(changedListenerMock.Received);

            action.Receive(true);

            Assert.IsTrue(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsTrue(changedListenerMock.Received);

            activatedListenerMock.Reset();
            deactivatedListenerMock.Reset();
            changedListenerMock.Reset();

            action.enabled = false;
            subject.Process();

            Assert.IsFalse(activatedListenerMock.Received);
            Assert.IsFalse(deactivatedListenerMock.Received);
            Assert.IsFalse(changedListenerMock.Received);
        }
    }
}