using Comal.Classes;
using InABox.Clients;
using InABox.Configuration;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.Wpf;
using InABox.WPF;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows;
using System.Windows.Controls;

namespace PRSDesktop;

public class JobRequisitionReviewUserSettings : IUserConfigurationSettings
{
    [Obsolete]
    private CoreFilterDefinition? _currentFilter;

    [Obsolete]
    public CoreFilterDefinition? CurrentFilter
    {
        get => _currentFilter;
        set
        {
            if (value is not null)
            {
                Filters = new DynamicGridSelectedFilterSettings(new List<CoreFilterDefinition> { value }, false, null);
            }
        }
    }

    public DynamicGridSelectedFilterSettings Filters { get; set; } = new();
}

public delegate void JobRequiItemSelect(CoreRow[] rows);
public delegate void GridRefresh();
public class JobRequisitionReviewGrid : DynamicDataGrid<JobRequisitionItem>
{
    private readonly JobRequisitionReviewUserSettings FilterSettings = new JobRequisitionReviewUserSettings();

    public JobRequisitionReviewGrid()
    {
        FilterSettings = new UserConfiguration<JobRequisitionReviewUserSettings>().Load();
        FilterComponent.SetSettings(FilterSettings.Filters, false);

        HiddenColumns.Add(x => x.ID);
        HiddenColumns.Add(x => x.Product.ID);
        HiddenColumns.Add(x => x.Product.Code);
        HiddenColumns.Add(x => x.Product.Group.ID);
        HiddenColumns.Add(x => x.Product.Group.Code);
        HiddenColumns.Add(x => x.Product.Group.Description);
        HiddenColumns.Add(x => x.Style.ID);
        HiddenColumns.Add(x => x.Style.Code);
        HiddenColumns.Add(x => x.Style.Description);
        HiddenColumns.Add(x => x.Status);
        HiddenColumns.Add(x => x.Requisition.ID);
        HiddenColumns.Add(x => x.Requisition.Job.ID);
        HiddenColumns.Add(x => x.Requisition.Job.JobNumber);
        HiddenColumns.Add(x => x.Requisition.Job.Name);
        HiddenColumns.Add(x => x.Requisition.Number);
        HiddenColumns.Add(x => x.Job.ID);
        HiddenColumns.Add(x => x.Job.Name);
        HiddenColumns.Add(x => x.Job.JobNumber);
        HiddenColumns.Add(x => x.Dimensions.UnitSize);
        HiddenColumns.Add(x => x.Dimensions.Length);
        HiddenColumns.Add(x => x.Dimensions.Width);
        HiddenColumns.Add(x => x.Dimensions.Height);
        HiddenColumns.Add(x => x.Dimensions.Weight);
        HiddenColumns.Add(x => x.Dimensions.Quantity);
        HiddenColumns.Add(x => x.Dimensions.Value);
        HiddenColumns.Add(x => x.Dimensions.Unit.ID);
        HiddenColumns.Add(x => x.Dimensions.Unit.HasLength);
        HiddenColumns.Add(x => x.Dimensions.Unit.HasHeight);
        HiddenColumns.Add(x => x.Dimensions.Unit.HasWidth);
        HiddenColumns.Add(x => x.Dimensions.Unit.HasWeight);
        HiddenColumns.Add(x => x.Dimensions.Unit.HasQuantity);
        HiddenColumns.Add(x => x.Dimensions.Unit.Formula);
        HiddenColumns.Add(x => x.Dimensions.Unit.Format);
        HiddenColumns.Add(x => x.Dimensions.Unit.Code);
        HiddenColumns.Add(x => x.Dimensions.Unit.Description);

        if (Security.CanEdit<JobRequisitionItem>())
            ActionColumns.Add(new DynamicMenuColumn(BuildMenu));

        ColumnsTag = "JobRequisitionReview";

        FilterComponent.OnFiltersSelected += GridOnFilterSelected;
    }
    protected override void DoReconfigure(FluentList<DynamicGridOption> options)
    {
        base.DoReconfigure(options);

        options.BeginUpdate()
            .AddRange(
                DynamicGridOption.FilterRows,
                DynamicGridOption.SelectColumns,
                DynamicGridOption.RecordCount,
                DynamicGridOption.DragSource)
            .Remove(DynamicGridOption.AddRows)
            .Remove(DynamicGridOption.ImportData)
            .Remove(DynamicGridOption.ExportData)
            .Remove(DynamicGridOption.Print)
            .Remove(DynamicGridOption.ShowHelp)
            .EndUpdate();
    }

    private void GridOnFilterSelected(DynamicGridSelectedFilterSettings settings)
    {
        new UserConfiguration<JobRequisitionReviewUserSettings>().Save(new JobRequisitionReviewUserSettings { Filters = settings });
        Refresh(false, true);
    }

    public override DynamicGridColumns GenerateColumns()
    {
        var columns = new DynamicGridColumns();
        columns.Add<JobRequisitionItem, DateTime>(x => x.Created, 80, "Date", "", Alignment.MiddleLeft);
        columns.Add<JobRequisitionItem, string>(x => x.Requisition.Job.JobNumber, 70, "Job", "", Alignment.MiddleLeft);
        columns.Add<JobRequisitionItem, int>(x => x.Requisition.Number, 50, "NO.", "", Alignment.MiddleLeft);
        columns.Add<JobRequisitionItem, string>(x => x.Product.Code, 70, "Code", "", Alignment.MiddleLeft);
        columns.Add<JobRequisitionItem, string>(x => x.Product.Name, 200, "Product Name", "", Alignment.MiddleLeft);
        columns.Add<JobRequisitionItem, string>(x => x.Style.Description, 150, "Style", "", Alignment.MiddleLeft);
        columns.Add<JobRequisitionItem, double>(x => x.Qty, 50, "Qty", "", Alignment.MiddleLeft);
        columns.Add<JobRequisitionItem, string>(x => x.Dimensions.UnitSize, 50, "Size", "", Alignment.MiddleLeft);
        columns.Add<JobRequisitionItem, string>(x => x.PurchaseOrderNumbers, 80, "PO Numbers", "", Alignment.MiddleLeft);
        columns.Add<JobRequisitionItem, string>(x => x.Notes, 300, "Notes", "", Alignment.MiddleLeft);
        return columns;
    }

    #region Action Column Buttons

    private bool CheckValidAction(JobRequisitionItem item)
    {
        bool valid = true;
        if (item.Status == JobRequisitionItemStatus.Allocated)
        {
            MessageWindow.ShowMessage("Item has already been reserved!", "Error", image: MessageWindow.WarningImage);
            return false;
        }
        else if (item.Status == JobRequisitionItemStatus.OnOrder)
        {
            MessageWindow.ShowMessage("Item is already on order!", "Error", image: MessageWindow.WarningImage);
            return false;
        }
        return valid;
    }

    private void SplitLine(JobRequisitionItem item, double oldItemQty, double newItemQty, string notes)
    {
        List<JobRequisitionItem> items = new List<JobRequisitionItem>();
        JobRequisitionItem newItem = new JobRequisitionItem();
        newItem.Requisition.ID = item.Requisition.ID;
        newItem.Requisition.Job.ID = item.Requisition.Job.ID;
        newItem.Requisition.Job.JobNumber = item.Requisition.Job.JobNumber;
        newItem.Requisition.Job.Name = item.Requisition.Job.Name;
        newItem.Product.ID = item.Product.ID;
        newItem.Product.Name = item.Product.Name;
        newItem.Product.Code = item.Product.Code;
        newItem.Product.Group.ID = item.Product.Group.ID;
        newItem.Product.Group.Description = item.Product.Group.Description;
        newItem.Dimensions.CopyFrom(item.Dimensions);
        newItem.Style.ID = item.Style.ID;
        newItem.Style.Description = item.Style.Description;
        newItem.Style.Code = item.Style.Code;
        newItem.Notes = item.Notes + Environment.NewLine + notes;
        item.Notes = newItem.Notes;

        item.Qty = oldItemQty;
        newItem.Qty = newItemQty;

        items.Add(newItem);
        items.Add(item);
        Client.Save(items, "Split lines from Job Requi Item Review Dashboard");
        MessageWindow.ShowMessage("Line split - original line Qty is now " + item.Qty + ". New line Qty is " + newItem.Qty, "Success");

        Refresh(false, true);
    }

    private void SplitLine_Clicked(CoreRow? row)
    {
        if (row is null) return;

        var item = row.ToObject<JobRequisitionItem>();
        if (CheckValidAction(item))
        {
            int units = Convert.ToInt32(item.Qty);
            if (NumberEdit.Execute("Enter amount to split", 1, units, ref units))
            {
                SplitLine(item, item.Qty - units, units, "Line split");
            }
        }
    }

    private void Archive_Clicked(CoreRow? row)
    {
        if (row is null) return;

        var item = row.ToObject<JobRequisitionItem>();

        if(item.Status != JobRequisitionItemStatus.Allocated)
        {
            var result = MessageWindow.New()
                .Message($"This requisition item is not fully allocated; its current status is {item.Status}. Are you sure you wish to archive this item?")
                .Title("Confirm Archive")
                .AddYesButton("Archive")
                .AddCancelButton()
                .Display().Result;
            if(result != MessageWindowResult.Yes)
            {
                return;
            }
        }

        item.Archived = DateTime.Now;
        item.Notes += Environment.NewLine + "Line marked as Archived by " + App.EmployeeName + " on " + DateTime.Now.ToString("dd MMM yy");

        Client.Save(item, "Updated From Job Requisition Review Dashboard");

        Refresh(false, true);
    }

    private void OrderRequired_Clicked(CoreRow? row)
    {
        if (row is null) return;

        var item = row.ToObject<JobRequisitionItem>();
        if (CheckValidAction(item))
        {
            item.OrderRequired = DateTime.Now;
            item.Notes += Environment.NewLine + "Line marked as Order Required by " + App.EmployeeName + " on " + DateTime.Now.ToString("dd MMM yy");

            Client.Save(item, "Updated From Job Requisition Review Dashboard");

            Refresh(false, true);
        }
    }

    #endregion

    protected override void Reload(Filters<JobRequisitionItem> criteria, Columns<JobRequisitionItem> columns, ref SortOrder<JobRequisitionItem>? sort, Action<CoreTable?, Exception?> action)
    {
        criteria.Add(new Filter<JobRequisitionItem>(x => x.Requisition.Approved).IsNotEqualTo(DateTime.MinValue));

        criteria.Add(new Filter<JobRequisitionItem>(x => x.Archived).IsEqualTo(DateTime.MinValue));

        sort = new SortOrder<JobRequisitionItem>(x => x.Requisition.Number, SortDirection.Descending);
        base.Reload(criteria, columns, ref sort, action);
    }

    private void BuildMenu(DynamicMenuColumn column, CoreRow? row)
    {
        column.AddItem("Order Required", PRSDesktop.Resources.purchase, OrderRequired_Clicked);
        column.AddItem("Split Line", PRSDesktop.Resources.split, SplitLine_Clicked);
        column.AddItem("Archive", PRSDesktop.Resources.archive, Archive_Clicked);
    }

    protected override DragDropEffects OnRowsDragStart(CoreRow[] rows)
    {
        // Only allow dragging the selected rows.
        var selected = SelectedRows.Select(x => x.Get<JobRequisitionItem, Guid>(x => x.ID)).ToHashSet();
        var draggedRows = rows.Where(x => selected.Contains(x.Get<JobRequisitionItem, Guid>(x => x.ID))).ToArray();

        if(draggedRows.Length == 0)
        {
            return DragDropEffects.None;
        }
        else
        {
            return base.OnRowsDragStart(draggedRows);
        }
    }
}

public class JobRequiReviewDashboardFilterItem
{
    public Guid SupplierID { get; set; }
    public Guid ProductID { get; set; }
    public string Text { get; set; }

    public JobRequiReviewDashboardFilterItem()
    {
        SupplierID = Guid.Empty;
        ProductID = Guid.Empty;
        Text = "";
    }
}