using Zinnia.Event.Proxy;
using Zinnia.Rule;

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

    public class StringEventProxyEmitterTest
    {
        private GameObject containingObject;
        private StringEventProxyEmitter subject;

        [SetUp]
        public void SetUp()
        {
            containingObject = new GameObject("StringEventProxyEmitterTest");
            subject = containingObject.AddComponent<StringEventProxyEmitter>();
        }

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

        [Test]
        public void Receive()
        {
            UnityEventListenerMock emittedMock = new UnityEventListenerMock();
            subject.Emitted.AddListener(emittedMock.Listen);
            const string payload = "test";

            Assert.IsNull(subject.Payload);
            Assert.IsFalse(emittedMock.Received);

            subject.Receive(payload);

            Assert.AreEqual(payload, subject.Payload);
            Assert.IsTrue(emittedMock.Received);
        }

        [Test]
        public void EmitPayload()
        {
            UnityEventListenerMock emittedMock = new UnityEventListenerMock();
            subject.Emitted.AddListener(emittedMock.Listen);
            const string payload = "test";
            subject.Payload = payload;

            Assert.AreEqual(payload, subject.Payload);
            Assert.IsFalse(emittedMock.Received);

            subject.EmitPayload();

            Assert.AreEqual(payload, subject.Payload);
            Assert.IsTrue(emittedMock.Received);
        }

        [Test]
        public void ClearPayload()
        {
            UnityEventListenerMock emittedMock = new UnityEventListenerMock();
            subject.Emitted.AddListener(emittedMock.Listen);
            const string payload = "test";
            subject.Payload = payload;

            Assert.AreEqual(payload, subject.Payload);
            subject.ClearPayload();
            Assert.IsNull(subject.Payload);
        }

        [Test]
        public void ReceiveWithRuleRestrictions()
        {
            UnityEventListenerMock emittedMock = new UnityEventListenerMock();
            subject.Emitted.AddListener(emittedMock.Listen);

            StringMatchesRule rule = subject.gameObject.AddComponent<StringMatchesRule>();
            rule.TargetPattern = "test";

            subject.ReceiveValidity = new RuleContainer
            {
                Interface = rule
            };

            Assert.IsNull(subject.Payload);
            Assert.IsFalse(emittedMock.Received);

            subject.Receive("test");

            Assert.AreEqual("test", subject.Payload);
            Assert.IsTrue(emittedMock.Received);

            emittedMock.Reset();

            Assert.IsFalse(emittedMock.Received);

            subject.Receive("somethingelse");

            Assert.AreEqual("test", subject.Payload);
            Assert.IsFalse(emittedMock.Received);
        }

        [Test]
        public void ReceiveInactiveGameObject()
        {
            UnityEventListenerMock emittedMock = new UnityEventListenerMock();
            subject.Emitted.AddListener(emittedMock.Listen);
            subject.gameObject.SetActive(false);

            const string payload = "test";

            Assert.IsNull(subject.Payload);
            Assert.IsFalse(emittedMock.Received);

            subject.Receive(payload);

            Assert.IsNull(subject.Payload);
            Assert.IsFalse(emittedMock.Received);
        }

        [Test]
        public void ReceiveInactiveComponent()
        {
            UnityEventListenerMock emittedMock = new UnityEventListenerMock();
            subject.Emitted.AddListener(emittedMock.Listen);
            subject.enabled = false;

            const string payload = "test";

            Assert.IsNull(subject.Payload);
            Assert.IsFalse(emittedMock.Received);

            subject.Receive(payload);

            Assert.IsNull(subject.Payload);
            Assert.IsFalse(emittedMock.Received);
        }

        [Test]
        public void EmitPayloadInactiveGameObject()
        {
            UnityEventListenerMock emittedMock = new UnityEventListenerMock();
            subject.Emitted.AddListener(emittedMock.Listen);
            subject.gameObject.SetActive(false);
            const string payload = "test";
            subject.Payload = payload;

            Assert.AreEqual(payload, subject.Payload);
            Assert.IsFalse(emittedMock.Received);

            subject.EmitPayload();

            Assert.AreEqual(payload, subject.Payload);
            Assert.IsFalse(emittedMock.Received);
        }

        [Test]
        public void EmitPayloadInactiveComponent()
        {
            UnityEventListenerMock emittedMock = new UnityEventListenerMock();
            subject.Emitted.AddListener(emittedMock.Listen);
            subject.enabled = false;
            const string payload = "test";
            subject.Payload = payload;

            Assert.AreEqual(payload, subject.Payload);
            Assert.IsFalse(emittedMock.Received);

            subject.EmitPayload();

            Assert.AreEqual(payload, subject.Payload);
            Assert.IsFalse(emittedMock.Received);
        }
    }
}