using Microsoft.AspNetCore.Components;
using Newtonsoft.Json;
using System.Collections.ObjectModel;
using System.Reflection.Metadata;
using System.Runtime.Intrinsics.X86;
using System.Text.Json.Serialization;
using WebWindowConfigurator.DTO;
using WebWindowConfigurator.Json;
using static WebWindowConfigurator.Json.WindowConst;

namespace WebWindowConfigurator
{
    public partial class WebWindowMaker : IDisposable
    {
        public void Dispose()
        {
            if (m_CurrWindow != null)
            {
                m_CurrWindow.OnPreview -= M_CurrWindow_OnPreview;
                m_CurrWindow = null;
            }
        }

        #region Public Properties

        [Parameter]
        public string CssSvg { get; set; } = "responsive-svg";

        [Parameter]
        public EventCallback<bool> EC_OnClose { get; set; }

        [Parameter]
        public EventCallback<TemplateSelectDTO> EC_OnSelectedTemplate { get; set; }

        [Parameter]
        public EventCallback<string> EC_OnUpdate { get; set; }

        public List<Fill> FillList
        {
            get => m_FillList;
        }

        [Parameter]
        public Template IN_SelTemplate
        {
            get => m_SelTemplate;
            set
            {
                if (value != null && (m_SelTemplate == null || (m_SelTemplate != null && value.nIndex != m_SelTemplate.nIndex)) && !string.IsNullOrEmpty(value.JWD))
                {
                    m_SelTemplate = value;
                    JsonWindow WindowFromJson = JsonConvert.DeserializeObject<JsonWindow>(m_SelTemplate.JWD, new PolymorphicJsonConverter()) ?? new JsonWindow("");
                    if (m_CurrWindow != null)
                    {
                        m_CurrWindow.OnPreview -= M_CurrWindow_OnPreview;
                        m_CurrWindow = null;
                    }
                    m_CurrWindow = WindowFromJson.Deserialize();
                    m_CurrWindow.OnPreview += M_CurrWindow_OnPreview;
                    m_FillList = new List<Fill>();
                    m_SashList = new List<Sash>();
                    m_SplitList = new List<Split>();
                    SearchInAreaList(m_CurrWindow.AreaList[0]);
                    m_SelSVG = m_SelTemplate.SVG;
                }
                if (m_CurrWindow != null)
                {
                    m_FillList = new List<Fill>();
                    m_SashList = new List<Sash>();
                    m_SplitList = new List<Split>();
                    SearchInAreaList(m_CurrWindow.AreaList[0]);
                }
            }
        }

        [Parameter]
        public List<TemplateSelectDTO> IN_TemplateDTOList { get; set; } = null!;

        [Parameter]
        public string LiveSVG
        {
            get => m_SelSVG;
            set => m_SelSVG = value;
        }

        public List<Sash> SashList
        {
            get => m_SashList;
        }

        public TemplateSelectDTO? SelTemplateDTO { get; set; } = null;

        public List<Split> SplitList
        {
            get => m_SplitList;
        }

        #endregion Public Properties

        #region Public Methods

        public void SearchInAreaList(Area node)
        {
            if (node != null)
            {
                switch (node.AreaType)
                {
                    case AreaTypes.FRAME:
                        {
                            m_Frame = (Frame)node;
                            break;
                        }
                    case AreaTypes.SASH:
                        {
                            m_SashList.Add((Sash)node);
                            break;
                        }
                    case AreaTypes.FILL:
                        {
                            m_FillList.Add((Fill)node);
                            break;
                        }
                    case AreaTypes.SPLIT:
                        {
                            m_SplitList.Add((Split)node);
                            break;
                        }
                }
                foreach (var item in node.AreaList)
                {
                    SearchInAreaList(item);
                }
            }
        }

        #endregion Public Methods

        #region Protected Enums

        protected enum CompileStep
        {
            Template = 0,
            Frame = 1,
            Split,
            Sash,
            Fill
        }

        #endregion Protected Enums

        #region Protected Properties

        protected Frame Frame
        {
            get => m_Frame;
            set => m_Frame = value;
        }

        protected string m_SelSVG { get; set; } = "";

        /// <summary>
        /// Componente SVG da mostrare
        /// </summary>
        protected MarkupString outSvg
        {
            get
            {
                // aggiunta gestione classe svg per posizionamento con costraints
                var newSvg = LiveSVG.Replace("<svg", $"<svg class=\"{CssSvg}\"");
                return (MarkupString)newSvg;
            }
        }

        #endregion Protected Properties

        #region Protected Methods

        protected async Task DoSave()
        {
            //manca salvataggio JWD
            await EC_OnClose.InvokeAsync(true);
        }

        protected async Task DoClose()
        {
            await EC_OnClose.InvokeAsync(true);
        }

#if false
        protected void DoUpdatePreview(object sender, OnPreviewEventArgs e)
        {
            EC_OnUpdate.InvokeAsync(e.sJwd);
                    var CurrJwd = JsonConvert.SerializeObject(m_CurrWindow.Serialize(), Formatting.Indented);
            EC_OnUpdate.InvokeAsync(CurrJwd); 
        }
#endif

        protected async Task DoPreviewSvg()
        {
            var CurrJwd = JsonConvert.SerializeObject(m_CurrWindow.Serialize(), Formatting.Indented);
            await EC_OnUpdate.InvokeAsync(CurrJwd);
        }

        protected async void DoSelect(TemplateSelectDTO newSel)
        {
            SelTemplateDTO = newSel;
            await EC_OnSelectedTemplate.InvokeAsync(newSel);
        }

        private void M_CurrWindow_OnPreview(object? sender, OnPreviewEventArgs e)
        {
            EC_OnUpdate.InvokeAsync(e.sJwd);
#if false
                    var CurrJwd = JsonConvert.SerializeObject(m_CurrWindow.Serialize(), Formatting.Indented);
            EC_OnUpdate.InvokeAsync(CurrJwd); 
#endif
        }

        protected async void DoSelectAndPreview(CompileStep newStep)
        {
            currStep = newStep;
            await DoPreviewSvg();
        }

        #endregion Protected Methods

        #region Private Fields

        private CompileStep currStep = CompileStep.Template;

        private List<Fill> m_FillList = new List<Fill>();

        private Frame m_Frame;

        private List<Sash> m_SashList = new List<Sash>();

        private List<Split> m_SplitList = new List<Split>();

        #endregion Private Fields

        #region Private Properties

        private Window? m_CurrWindow { get; set; } = null;
        //private Window m_CurrWindow { get; set; } = new Window();

        private Template m_SelTemplate { get; set; } = null!;

        private string mainCss
        {
            get => (SelTemplateDTO != null && currStep != CompileStep.Template) ? "col-6" : "col-12";
        }

        #endregion Private Properties

        #region Private Methods

        private void AdvStep(CompileStep newStep)
        {
            currStep = newStep;
        }

        /// <summary>
        /// Calcola il css del tab selezionato
        /// </summary>
        /// <param name="testStep"></param>
        /// <returns></returns>
        private string tabNavCss(CompileStep testStep)
        {
            return testStep.Equals(currStep) ? "nav-link active fw-bold" : "nav-link text-secondary";
        }

        #endregion Private Methods
    }
}