using Aurora;
using Aurora.Api;
using Aurora.Api.Manager;
using Aurora.Framework.Core;
using Aurora.View;
using CoreUnit.Control.UserControl.Canvas;
using CoreUnit.Scanner.UserControl.ScannerCanvas;
using DB.Recipe;
using GUI;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reactive.Linq;
using System.Text;
using System.Threading.Tasks;
using WeldingCommon.Devices;
using WeldingCommon.Recipes;

namespace WeldingCommon.Views
{
    public class UCScannerObjectTeachingViewModel : NotifyPropertyChangedBase, IRecipeViewModel
    {
        private readonly Logger Log = new Logger("UCScannerObjectTeachingViewModel");

        public delegate bool ExternalRecipeChangeRequest(Logger log, IAuroraEnvironment aurora);
        public static ExternalRecipeChangeRequest RecipeChangeRequest;

        public delegate void ExternalRecipeChangeComplete(Logger Log, IAuroraEnvironment aurora);
        public static ExternalRecipeChangeComplete RecipeChangeComplete;

        private readonly IAuroraEnvironment _Aurora;
        private readonly IRecipeManager _RecipeManager;
        private readonly IModelManager _ModelManager;

        private PLCController _PLC;

        public UCScannerObjectTeachingControlBoxViewModel ScannerObjectTeachingControlBoxViewModel { get; }

        public UCScannerObjectTeachingViewModel(IAuroraEnvironment aurora,
                                                    ExternalRecipeChangeRequest externalRecipeChangeRequest,
                                                    ExternalRecipeChangeComplete externalRecipeChangeComplete)
        {
            _Aurora = aurora;
            _RecipeManager = aurora.RecipeManager;
            _ModelManager = aurora.ModelManager;

            _PLC = aurora.DeviceManager[CommonDeviceIds.PLCDevice] as PLCController;

            ScannerObjectTeachingControlBoxViewModel = new UCScannerObjectTeachingControlBoxViewModel(_Aurora);

            RecipeChangeRequest = externalRecipeChangeRequest;
            RecipeChangeComplete = externalRecipeChangeComplete;

            // For LASA image update, after scout
            _Aurora.EventObservable.AsObservable(AuroraSysEvent.SYS_SETTING_CHANGED)
                .ObserveOnDispatcher()
                .Subscribe(OnSettingReloaded);

            // New, Delete, Copy, Rename
            _Aurora.EventObservable.AsObservable(AuroraSysEvent.SYS_RECIPE_ENTRY_CHANGED)
                .ObserveOnDispatcher()
                .Subscribe(OnRecipeEntryChanged);

            _Aurora.EventObservable.AsObservable(AuroraSysEvent.SYS_RECIPE_ACTIVATED)
                .ObserveOnDispatcher()
                .Subscribe(OnActivatedRecipe);

            _Aurora.EventObservable.AsObservable(CommonEventIds.EVENT_RECIPE_CHANGE_REQUEST)
                .ObserveOnDispatcher()
                .Subscribe(OnRecipeChangeRequest);

            var activeRecipe = _RecipeManager.ActivatedRecipe();
            Reloaded((activeRecipe.Id, activeRecipe.Name));
            WeldingRecipeManager.UpdateAutoRunWeldingPage();
        }

        private void OnSettingReloaded(object obj)
        {
            // ScannerCanvasCtrlTeaching Update
            WeldingRecipeManager.GetWeldingPage().ReloadSetting();
        }

        private void OnRecipeEntryChanged(object obj)
        {
            Log.I("SYS_RECIPE_ENTRY_CHANGED, OnRecipeEntryChanged");

            if (obj == null || !(obj is EventMessage msg)) {
                return;
            }

            if (msg.Param is RecipeEntryChangedParam param) {
                if (param.AddedId != -1) {                                          //New
                    var recipe = _RecipeManager.Recipes().FirstOrDefault(x => x.Id == param.AddedId);
                    if (recipe == null) return;
                    WeldingRecipeManager.SelectedRecipe = (recipe.Id, recipe.Name);
                    WeldingRecipeManager.SaveWeldingRecipe(recipe.Name, includeModel: false);
                } else if (param.RemovedId != -1) {                                 //Remove

                } else if (param.CopiedToId != -1 && param.CopiedFromId != -1) {    //Copy

                } else if (param.RenameNewId != -1 && param.RenameOldId != -1) {    //Rename

                } else {
                    string stringFormat = string.Format($"Error : OnRecipeEntryChanged\n" +
                        $"[Add] [{param.AddedId}]\n" +
                        $"[Remove] [{param.RemovedId}]\n" +
                        $"[Copy] [{param.CopiedFromId}] [{param.CopiedToId}]\n" +
                        $"[Rename] [{param.RenameOldId}] [{param.RenameNewId}]");
                    MessageUtil.CreateAndShowMessageDialog("Error", stringFormat);
                }
            }
        }

        public void OnActivatedRecipe(object obj)
        {
            Log.D("SYS_RECIPE_ACTIVATED OnActivatedRecipe");
            if (obj == null || !(obj is EventMessage msg)) {
                return;
            }

            // @deprecated temporary support
            // Recipe를  선택하는데  Z축  동작이  되는  것은  굉장히  위험한  상황이다.
            // 한시적으로만  사용한다..

            //LHS 라인에서 Recipe Rename시 Mdoel이 Activate 되지 않아서 Rename시가 아니라
            //Recipe Active시 Model Active 될 수 있도로 추가
            string modelname = _ModelManager.Models().FirstOrDefault();
            if (modelname.Trim() == "" || modelname == null) {
                string stringFormat = string.Format($"Error : Model, 현재 Recipe에 Model list가 없습니다.");
                MessageUtil.CreateAndShowMessageDialog("Error", stringFormat);
                return;
            }
            _ModelManager.ActivateModel(modelname);
            Log.I($"Activate Model Name : {modelname}");

            var activeRecipe = _RecipeManager.ActivatedRecipe();
            WeldingRecipeManager.SaveWeldingRecipe(activeRecipe.Name);
        }

        public void OnRecipeChangeRequest(EventMessage message)
        {
            Log.D("EVENT_RECIPE_CHANGE_REQUEST OnRecipeChangeRequest");

            //1. 현재 편집 중인 Recipe 저장
            WeldingRecipeManager.OnSaveRecipeForEditing();

            //2. Activated Recipe Load
            WeldingRecipeManager.OnActiveReloaded();

            //3. 현재 Page의 object 정보를 가져옴
            if (RecipeChangeRequest != null) {
                if (RecipeChangeRequest(Log, _Aurora) == false) {
                    // Recipe 저장하지 않음.
                    return;
                }
            } else {
                //Log.W("Check Machine Type");
                Log.W("Check OnRecipeChangeRequest and need function!!");
            }

            //6. Recipe 저장
            var activeRecipe = _RecipeManager.ActivatedRecipe();
            WeldingRecipeManager.SaveWeldingRecipe(activeRecipe.Name);

            Log.I("Complete OnRecipeChangeRequest");

            if (RecipeChangeComplete != null) {
                RecipeChangeComplete(Log, _Aurora);
            } else {
                //Log.W("Check Machine Type");
                Log.W("Check RecipeChangeComplete and need function!!");
            }
        }

        public void OnChanged((int id, string name) recipe)
        {
            if (WeldingRecipeManager.SelectedRecipe.id == recipe.id && WeldingRecipeManager.SelectedRecipe.name == recipe.name) {
                return;
            }

            WeldingRecipeManager.SelectedRecipe = recipe;
            WeldingRecipeManager.ReloadWeldingRecipe(recipe.name);
        }

        public void Reloaded((int id, string name) recipe)
        {
            WeldingRecipeManager.SelectedRecipe = recipe;
            WeldingRecipeManager.ReloadWeldingRecipe(recipe.name);
        }

        public void OnModelSelectChanged(string modelName)
        {
            //throw new NotImplementedException();
        }

        public bool PreSaved(int id, string recipeName)
        {
            return true;
        }

        public void OnSaved(int id, string recipeName)
        {
            if (string.IsNullOrWhiteSpace(WeldingRecipeManager.SelectedRecipe.name)) {
                return;
            }

            WeldingRecipeManager.SaveWeldingRecipe(WeldingRecipeManager.SelectedRecipe.name);
            var activeRecipe = _RecipeManager.ActivatedRecipe();
            if (WeldingRecipeManager.SelectedRecipe.id == activeRecipe.Id) {
                WeldingRecipeManager.UpdateAutoRunWeldingPage();
            }
        }
    }
}