using System;
using System.Collections;
using System.Collections.Generic;
using NUnit.Framework;
using UnityEngine;
using UnityEngine.TestTools;
using ObjectScripts;
using CSVReader;

namespace Tests
{
    public class ObjectHandlerTest
    {

        private GameObject ObjectHandler;
        private ObjectHandler Handler;
        private GameObject ManagerObject;
        private AbstractManager Manager;
        private int amountInputs = 10;
        [UnitySetUp]
        public IEnumerator SetUp()
        {

            yield return new EnterPlayMode();
            ObjectHandler = GameObject.CreatePrimitive(PrimitiveType.Cube);
            Handler = ObjectHandler.AddComponent<ObjectHandler>();
            ManagerObject = GameObject.CreatePrimitive(PrimitiveType.Cube);
            Manager = ManagerObject.AddComponent<TestManager>();


            Manager.UpdateRate = 4;
            Manager.GameVelocity = 1;
            Manager.UpdateRateInSeconds = 1 / 4;

            Handler.ManagerObject = Manager;
            GameObject person = GameObject.CreatePrimitive(PrimitiveType.Cube);
            person.AddComponent<DataObject>();


            Handler.prefabHuman = person;
            Handler.prefabCar = person;
            Handler.prefabBike = person;
            Handler.prefabTruck = person;



            Dictionary<int, GameObject> sensorList = new Dictionary<int, GameObject>();
            for (var i = 0; i < amountInputs; i++)
            {
                sensorList.Add(i, new GameObject());
            }
            Handler.SensorList = sensorList;
            // yield return new WaitForSecondsRealtime(3);
            // ManagerObject.Handler = Handler;
            yield return null;
        }
        [UnityTearDown]
        public IEnumerator TearDown()
        {
            foreach (MonoBehaviour item in GameObject.FindObjectsOfType<MonoBehaviour>())
            {
                GameObject.Destroy(item.gameObject);
            }
            yield return null;
            
            yield return new ExitPlayMode();
        }
        private List<InputObject> createTestInputs(int amountInputs, double time, int move = 0)
        {
            List<InputObject> inputs = new List<InputObject>();
            InputObject input;
            EntityType[] allTypes = (EntityType[])(System.Enum.GetValues(typeof(EntityType)));
            for (int id = 0; id < amountInputs; id++)
            {

                int value = id + move;
                float posX = (value % 3 == 0) ? -value / 100 : value / 100, posY = (value % 2 == 0) ? -value + 0.2f : value - 10, posZ = (value % 7 == 0) ? value : 0;
                float rotX = 0, rotY = 0, rotZ = 0;
                float rotHeadX = 0, rotHeadY = 0, rotHeadZ = 0;
                byte rTop = (value % 4 == 0) ? byte.MaxValue : byte.MinValue, gTop = (byte)(value % byte.MaxValue), bTop = (byte)(value % byte.MaxValue),
                     rBot = (byte)(value % byte.MaxValue), gBot = (byte)(value % byte.MaxValue), bBot = (byte)(value % byte.MaxValue);
                uint botColor = 333333;
                uint topColor = 555555;
                int sensorID = id;
                EntityType type = (EntityType)allTypes.GetValue(value % allTypes.Length);
                // Debug.Log((id, time, posX, posY, posZ, rotX, rotY, rotZ, rTop, gTop, bTop, rBot, gBot, bBot, type).ToString());
                input = new InputObject(id, time, posX, posY, posZ, rotX, rotY, rotZ, rotHeadX, rotHeadY, rotHeadZ, topColor, botColor, type, sensorID);
                inputs.Add(input);
            }


            return inputs;
        }
        private void checkInputEqualsGameObject(InputObject input, InputObject inputBeforeUpdate = null, bool delete = false)
        {
            Debug.LogWarning("Rotation and SensorID isn't checked");

            GameObject obj = GameObject.Find(input.ID.ToString());
            Assert.NotNull(obj, string.Format("Object {0} not created", input.ID));
            DataObject data;
            Assert.True(Handler.DataObjectDictionary.TryGetValue(input.ID, out data), string.Format("Object {0} not in DataObjectDictionary", input.ID));
            Assert.AreEqual(data.Handler, Handler);
            Assert.AreEqual(data.ID, input.ID);

            Assert.AreEqual(data.Type, input.Type);
            Assert.AreEqual(data.Timestamp, input.Time);

            if (inputBeforeUpdate == null)
            {
                Assert.AreEqual(data.StartPos, input.Pos);
            }
            else
            {
                Assert.AreEqual(data.StartPos, inputBeforeUpdate.Pos);
            }
            Assert.AreEqual(data.TargetPos, input.Pos);

            Assert.AreEqual(data.TimeSinceLastUpdate, 0f);

            Assert.AreEqual(data.BotColor, input.BotColor);
            Assert.AreEqual(data.TopColor, input.TopColor);


            Assert.AreEqual(data.Handler.UpdateRate, Manager.UpdateRateInSeconds);
            if (delete)
            {
                GameObject.Destroy(obj);
            }
        }

        [UnityTest]
        public IEnumerator GameObjectsCorrectlyCreated()
        {
            // Use the Assert class to test conditions.
            // Use yield to skip a frame.
            yield return null;
            Assert.AreEqual(0, GameObject.FindObjectsOfType<DataObject>().Length - 1);

            List<InputObject> testInputs = createTestInputs(amountInputs, 0);
            Handler.Handle(testInputs);
            yield return null;
            Assert.AreEqual(amountInputs, GameObject.FindObjectsOfType<DataObject>().Length - 1);
            foreach (var input in testInputs)
            {
                checkInputEqualsGameObject(input, delete: true);
            }
            yield return null;
            Assert.AreEqual(0, GameObject.FindObjectsOfType<DataObject>().Length - 1);
        }

        [UnityTest]
        public IEnumerator GameObjectsCorrectlyUpdated()
        {
            yield return null;
            Assert.AreEqual(0, GameObject.FindObjectsOfType<DataObject>().Length - 1);
            int amountChecks = 4;
            amountInputs = 5;
            float updateRate = 1 / 4;
            List<InputObject> oldTestInputs;
            List<InputObject> testInputs;
            for (int i = 0; i < amountChecks; i++)
            {
                oldTestInputs = createTestInputs(amountInputs, i * updateRate);
                Handler.Handle(oldTestInputs);
                yield return null;
                Assert.AreEqual(amountInputs, GameObject.FindObjectsOfType<DataObject>().Length - 1);
                testInputs = createTestInputs(5, (i + 1) * updateRate, i + 1);
                Handler.Handle(testInputs);
                yield return null;
                Assert.AreEqual(amountInputs, GameObject.FindObjectsOfType<DataObject>().Length - 1);
                for (int j = 0; j < amountInputs; j++)
                {
                    if (i >= amountChecks - 1)
                    {
                        checkInputEqualsGameObject(testInputs[j], oldTestInputs[j], delete: true);
                    }
                    else
                    {
                        checkInputEqualsGameObject(testInputs[j], oldTestInputs[j]);
                    }

                }
            }


        }

        [UnityTest]
        public IEnumerator GameObjectsCorrectlyDestroyed()
        {
            yield return null;
            Assert.AreEqual(0, GameObject.FindObjectsOfType<DataObject>().Length - 1);
            amountInputs = 5;
            List<InputObject> testInputs = createTestInputs(amountInputs, 0);
            Handler.Handle(testInputs);
            yield return null;
            Assert.AreEqual(amountInputs, GameObject.FindObjectsOfType<DataObject>().Length - 1);
            foreach (var obj in GameObject.FindObjectsOfType<DataObject>())
            {
                Handler.DeleteObject(obj);
            }
            yield return null;
            yield return null;
            Assert.AreEqual(0, GameObject.FindObjectsOfType<DataObject>().Length - 1);
        }

        [UnityTest]
        public IEnumerator CorrectlyCleared()
        {

            yield return null;
            Assert.AreEqual(0, GameObject.FindObjectsOfType<DataObject>().Length - 1);
            amountInputs = 5;
            List<InputObject> testInputs = createTestInputs(amountInputs, 0);
            Handler.Handle(testInputs);
            yield return null;
            Assert.AreEqual(amountInputs, GameObject.FindObjectsOfType<DataObject>().Length - 1);
            testInputs = createTestInputs(amountInputs, 0.25, 1);
            Handler.Handle(testInputs);
            Handler.ClearAll();
            yield return null;
            yield return null;
            Assert.AreEqual(0, GameObject.FindObjectsOfType<DataObject>().Length - 1);

            testInputs = createTestInputs(amountInputs, 0.5, 2);
            Handler.Handle(testInputs);
            Handler.ClearAll();
            yield return null;
            Assert.AreEqual(0, GameObject.FindObjectsOfType<DataObject>().Length - 1);
            yield return null;
            Assert.AreEqual(0, GameObject.FindObjectsOfType<DataObject>().Length - 1);



        }


    }
}