using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using Speckle.Core.Api;
using UnityEngine;
using UnityEngine.UI;
using Text = UnityEngine.UI.Text;

namespace Speckle.ConnectorUnity
{
    [Obsolete]
    public class InteractionLogic : MonoBehaviour
    {
        private Receiver _receiver;

        public void InitReceiver(Stream stream, bool autoReceive)
        {
            gameObject.name = $"receiver-{stream.id}-{Guid.NewGuid().ToString()}";
            InitRemove();

            _receiver = gameObject.AddComponent<Receiver>();
            _receiver.Stream = stream;

            var btn = gameObject.transform.Find("Btn").GetComponentInChildren<Button>();
            var streamText = gameObject.transform.Find("StreamText").GetComponentInChildren<Text>();
            var statusText = gameObject.transform.Find("StatusText").GetComponentInChildren<Text>();
            var branchesDropdown = gameObject.transform
                .Find("Dropdown")
                .GetComponentInChildren<Dropdown>();
            var receiveProgress = btn.GetComponentInChildren<Slider>();
            receiveProgress.gameObject.SetActive(false); //hide

            //populate branches
            branchesDropdown.options.Clear();
            List<Branch> branches = _receiver.Stream.branches.items;
            branches.Reverse();
            foreach (Branch branch in branches)
            {
                branchesDropdown.options.Add(
                    new Dropdown.OptionData(branch.name.Replace(' ', '\u00A0'))
                );
            }

            //trigger ui refresh, maybe there's a better method
            branchesDropdown.value = -1;
            branchesDropdown.value = 0;
            branchesDropdown.onValueChanged.AddListener(index =>
            {
                if (index == -1)
                    return;

                _receiver.BranchName = branches[index].name;
            });

            _receiver.Init(
                stream.id,
                autoReceive,
                onDataReceivedAction: (go) =>
                {
                    statusText.text = $"Received {go.name}";
                    MakeButtonsInteractable(true);
                    receiveProgress.value = 0;
                    receiveProgress.gameObject.SetActive(false);

                    AddComponents(go);
                },
                onTotalChildrenCountKnown: (count) =>
                {
                    _receiver.TotalChildrenCount = count;
                },
                onProgressAction: (dict) =>
                {
                    //Run on a dispatcher as GOs can only be retrieved on the main thread
                    Dispatcher
                        .Instance()
                        .Enqueue(() =>
                        {
                            var val = dict.Values.Average() / _receiver.TotalChildrenCount;
                            receiveProgress.gameObject.SetActive(true);
                            receiveProgress.value = (float)val;
                        });
                }
            );

            streamText.text = $"Stream: {stream.name}\nId: {stream.id} - Auto: {autoReceive}";
            btn.onClick.AddListener(() =>
            {
                statusText.text = "Receiving...";
                MakeButtonsInteractable(false);
                _receiver.Receive();
            });
        }

        /// <summary>
        /// Recursively adds custom components to all children of a GameObject
        /// </summary>
        /// <param name="go"></param>
        private void AddComponents(GameObject go)
        {
            for (var i = 0; i < go.transform.childCount; i++)
            {
                var child = go.transform.GetChild(i);

                if (child.childCount > 0)
                {
                    AddComponents(child.gameObject);
                }

                child.gameObject.AddComponent<Selectable>();

                //Add extra Components
                //var rigidbody = child.gameObject.AddComponent<Rigidbody>();
                //rigidbody.mass = 10;
            }
        }

        public void InitSender(Stream stream)
        {
            gameObject.name = $"sender-{stream.id}-{Guid.NewGuid().ToString()}";
            InitRemove();

            var sender = gameObject.AddComponent<Sender>();
            var btn = gameObject.transform.Find("Btn").GetComponentInChildren<Button>();

            var streamText = gameObject.transform.Find("StreamText").GetComponentInChildren<Text>();
            var statusText = gameObject.transform.Find("StatusText").GetComponentInChildren<Text>();

            btn.GetComponentInChildren<Text>().text = "Send";
            statusText.text = "Ready to send";

            var sendProgress = btn.GetComponentInChildren<Slider>();
            sendProgress.gameObject.SetActive(false); //hide

            streamText.text = $"Stream: {stream.name}\nId: {stream.id}";

            btn.onClick.AddListener(() =>
            {
                var objs = SelectionManager.selectedObjects
                    .Select(s => s.gameObject)
                    .ToImmutableHashSet();

                if (!objs.Any())
                {
                    statusText.text = $"No objects selected";
                    return;
                }

                MakeButtonsInteractable(false);

                statusText.text = "Sending...";
                try
                {
                    sender.Send(
                        stream.id,
                        objs,
                        onProgressAction: (dict) =>
                        {
                            //Run on a dispatcher as GOs can only be retrieved on the main thread
                            Dispatcher
                                .Instance()
                                .Enqueue(() =>
                                {
                                    var val = dict.Values.Average() / objs.Count;
                                    sendProgress.gameObject.SetActive(true);
                                    sendProgress.value = (float)val;
                                });
                        },
                        onDataSentAction: (objectId) =>
                        {
                            Debug.Log($"Send operation completed, object id: {objectId}", this);
                            Dispatcher
                                .Instance()
                                .Enqueue(() =>
                                {
                                    MakeButtonsInteractable(true);
                                    statusText.text = $"Sent {objectId}";
                                    sendProgress.gameObject.SetActive(false); //hide
                                });
                        },
                        onErrorAction: (message, e) =>
                        {
                            Debug.LogError("Send operation Failed!", this);
                            Dispatcher
                                .Instance()
                                .Enqueue(() =>
                                {
                                    MakeButtonsInteractable(true);
                                    statusText.text = $"Error {message}";
                                    sendProgress.gameObject.SetActive(false); //hide
                                    Debug.LogError(e, this);
                                });
                        }
                    );
                }
                catch (Exception e)
                {
                    Dispatcher
                        .Instance()
                        .Enqueue(() =>
                        {
                            MakeButtonsInteractable(true);
                            statusText.text = $"Error {e.Message}";
                            sendProgress.gameObject.SetActive(false); //hide
                            Debug.LogError(e, this);
                        });
                }
            });
        }

        private void MakeButtonsInteractable(bool interactable)
        {
            var selectables =
                gameObject.transform.GetComponentsInChildren<UnityEngine.UI.Selectable>();
            foreach (var selectable in selectables)
            {
                selectable.interactable = interactable;
            }
        }

        private void InitRemove()
        {
            var close = gameObject.transform.Find("Close").GetComponentInChildren<Button>();

            close.onClick.AddListener(() =>
            {
                //remove received geometry
                if (_receiver != null)
                {
                    Destroy(_receiver.ReceivedData);
                }

                //update ui
                GameObject
                    .Find("_SpeckleExamples")
                    .GetComponent<SpeckleExamples>()
                    .RemoveStreamPrefab(gameObject);

                //kill it
                Destroy(gameObject);
            });
        }
    }
}