using Microsoft.AspNetCore.Components;
using Microsoft.JSInterop;
using MP.Stats.Data;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using System;
using System.Linq;
using StackExchange.Redis;
using MP.Data.DatabaseModels;
using static MP.Data.Objects.Enums;

namespace MP.Stats.Pages
{
    public partial class TaskScheduler : ComponentBase, IDisposable
    {
        #region Public Methods

        public string checkSelect(int TaskId)
        {
            string answ = "";
            if (currRecord != null)
            {
                try
                {
                    answ = (currRecord.TaskId == TaskId) ? "table-info" : "";
                }
                catch
                { }
            }
            else if (detRecord != null)
            {
                answ = (detRecord.TaskId == TaskId) ? "table-info" : "";
            }
            return answ;
        }

        public void Dispose()
        {
            MessageService.EA_SearchUpdated -= OnSeachUpdated;
        }

        public async void OnSeachUpdated()
        {
            await InvokeAsync(() =>
            {
                Task task = UpdateData();
                StateHasChanged();
            });
        }

        #endregion Public Methods

        #region Protected Fields

        protected string fileName = "TaskList.csv";

        #endregion Protected Fields

        #region Protected Properties

        [Inject]
        protected IJSRuntime JSRuntime { get; set; }

        protected string mainCss
        {
            get => detRecord == null ? "col-12" : "col-6";
        }

        [Inject]
        protected MessageService MessageService { get; set; }

        [Inject]
        protected NavigationManager NavManager { get; set; }

        [Inject]
        protected MpStatsService StatService { get; set; }

        protected int totalCount { get; set; } = 0;

        protected Task2ExeType TypeSel
        {
            get => typeSel;
            set
            {
                if (typeSel != value)
                {
                    typeSel = value;
                    var pUpd = Task.Run(async () =>
                    {
                        await ReloadData();
                    });
                    pUpd.Wait();
                }
            }
        }

        #endregion Protected Properties

        #region Protected Methods

        protected async Task addNew()
        {
            currRecord = new TaskListModel() { Name = "Nuovo Task", Descript = "Descrizione", DtLastExec = DateTime.Today, DtNextExec = DateTime.Today.AddDays(1) };
            await ReloadData();
        }

        protected async Task doCancel()
        {
            currRecord = null;
            detRecord = null;
            await ReloadData();
        }

        protected async Task doEdit(TaskListModel selRec)
        {
            currRecord = selRec;
            await ReloadData();
        }

        protected async Task DoFilter(SelectData newFilter)
        {
            clearFile();
            SearchRecords = null;
            ListRecords = null;
            currFilter = newFilter;
            await ReloadData();
        }

        protected async Task doReset()
        {
            detRecord = null;
            currRecord = null;
            await ReloadData();
        }

        protected async Task doSelect(TaskListModel selRec)
        {
            detRecord = selRec;
            await ReloadData();
        }

        protected async Task doRun(TaskListModel selRec)
        {
            isLoading = true;
            detRecord = null;
            await Task.Delay(100);
            // chiama esecuzione task
            var result = await StatService.ExecuteTask(selRec.TaskId);
            isLoading = false;
            detRecord = selRec;
            await ReloadData();
        }

        protected async Task ForceReload(int newNum)
        {
            numRecord = newNum;
            await ReloadData();
        }

        protected async Task ForceReloadPage(int newNum)
        {
            currPage = newNum;
            await ReloadData();
        }

        protected async Task forceUpdate(bool doForce)
        {
            currRecord = null;
            await ReloadData();
        }

        protected override async Task OnInitializedAsync()
        {
            clearFile();
            numRecord = 10;
            MessageService.ShowSearch = false;
            MessageService.PageName = "Task Scheduler";
            MessageService.PageIcon = "oi oi-clock";
            MessageService.EA_SearchUpdated += OnSeachUpdated;
            await ReloadData();
        }

        protected void ResetData()
        {
            clearFile();
            StatService.rollBackEdit(currRecord);
            currRecord = null;
        }

        protected async Task ResetFilter(SelectData newFilter)
        {
            clearFile();
            currRecord = null;
            SearchRecords = null;
            ListRecords = null;
            currFilter = SelectData.Init(5, 7);
            await ReloadData();
        }

        protected double righDiv(double num, double den)
        {
            if (den == 0)
            {
                den = 1;
            }
            double answ = num / den;
            return answ;
        }

        protected double simVal(double minVal, double maxVal)
        {
            Random rnd = new Random();
            return rnd.NextDouble() * (maxVal - minVal) + minVal;
        }

        protected async Task UpdateData()
        {
            currRecord = null;
            await ReloadData();
        }

        #endregion Protected Methods

        #region Private Fields

        private TaskListModel currRecord = null;
        private TaskListModel detRecord = null;

        private List<TaskListModel> ListRecords;
        private List<TaskListModel> SearchRecords;

        #endregion Private Fields

        #region Private Properties

        private SelectData currFilter
        {
            get
            {
                return MessageService.ODL_Filter;
            }
            set
            {
                MessageService.ODL_Filter = value;
            }
        }

        private int currPage { get; set; } = 1;

        private string fullPath
        {
            get => $"{Directory.GetCurrentDirectory()}\\temp\\{fileName}";
        }

        private bool isLoading { get; set; } = false;
        private int numRecord { get; set; } = 10;

        private Task2ExeType typeSel { get; set; } = Task2ExeType.ND;

        #endregion Private Properties

        #region Private Methods

        private async void clearFile()
        {
            await Task.Run(() => File.Delete(fullPath));
        }

        private async Task ExportCsv()
        {
            isLoading = true;
            // salvo davvero!
            await MP.Data.Utils.SaveToCsv(SearchRecords, fullPath, ';');
            isLoading = false;
        }

        private async Task ReloadData()
        {
            SearchRecords = await StatService.TaskListAll(TypeSel, "");
            totalCount = SearchRecords.Count;
            ListRecords = SearchRecords.Skip(numRecord * (currPage - 1)).Take(numRecord).ToList();
        }

        #endregion Private Methods
    }
}