using System;
using System.Collections.Generic;
using System.Linq;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using InABox.Wpf;
using InABox.WPF;

namespace PRSDesktop;

public static class StockUtils
{
    // public static bool RecalculateHoldingsOfLocations(Guid[] locationIDs, out List<String> report)
    // {
    //     return RecalculateHoldings(new Filter<IStockHolding>(x => x.Location.ID).InList(locationIDs), out report);
    // }
    
    // public static bool RecalculateHoldingsOfProducts(Guid[] productIDs, out List<String> report)
    // {
    //     return RecalculateHoldings(new Filter<IStockHolding>(x => x.Product.ID).InList(productIDs), out report);
    // }

    // public static bool RecalculateHoldings(Filter<IStockHolding> filter, out List<String> report)
    // {
    //     bool result = false;
    //     Dictionary<String, int> messages = new();
    //
    //     void AddMessage(String type)
    //     {
    //         messages.TryGetValue(type, out int count);
    //         messages[type] = ++count;
    //     }
    //
    //     Progress.ShowModal("Recalculating", progress =>
    //     {
    //         progress.Report("Loading Data");
    //         MultiQuery query = new MultiQuery();
    //
    //         query.Add(
    //             filter.Cast<StockHolding>(),
    //             Columns.Required<StockHolding>().Add(x => x.ID)
    //                 .Add(x => x.Location.ID)
    //                 .Add(x => x.Product.ID)
    //                 .Add(x => x.Job.ID)
    //                 .Add(x => x.Style.ID)
    //                 .AddDimensionsColumns(x => x.Dimensions, Dimensions.ColumnsType.Local)
    //                 .Add(x => x.Units)
    //                 .Add(x => x.AverageValue)
    //                 .Add(x => x.Available)
    //                 .Add(x => x.Qty)
    //                 .Add(x => x.Weight)
    //                 .Add(x => x.Value)
    //         );
    //
    //         query.Add(
    //             filter.Cast<StockMovement>(),
    //             Columns.None<StockMovement>().Add(x => x.ID)
    //                 .Add(x=>x.Location.ID)
    //                 .Add(x => x.Product.ID)
    //                 .Add(x => x.Job.ID)
    //                 .Add(x => x.Style.ID)
    //                 .AddDimensionsColumns(x => x.Dimensions, Dimensions.ColumnsType.Local)
    //                 .Add(x => x.Units)
    //                 .Add(x => x.Cost)
    //                 .Add(x => x.JobRequisitionItem.ID)
    //         );
    //         query.Query();
    //
    //         var holdings = query.Get<StockHolding>();
    //         var toDelete = new List<StockHolding>();
    //         var movements = query.Get<StockMovement>();
    //
    //         double movementcount = (double)movements.Rows.Count;
    //         progress.Report("Processing");
    //         var updates = new List<StockHolding>();
    //         
    //         while (movements.Rows.Any())
    //         {
    //             double percent = ((movementcount - movements.Rows.Count) / movementcount) * 100.0;
    //             progress.Report($"Processing ({percent:F2}% complete)");
    //             var first = movements.Rows.First();
    //             var selected = movements.Rows.Where(x => x.IsEqualTo<StockMovement, StockMovement>(first)).ToList();
    //
    //             var holdingrow = holdings.Rows.FirstOrDefault(x => x.IsEqualTo<StockHolding, StockMovement>(first));
    //             StockHolding holding = null;
    //             if (holdingrow != null)
    //             {
    //                 holdings.Rows.Remove(holdingrow);
    //                 holding = holdingrow.ToObject<StockHolding>();
    //             }
    //
    //             if (holding == null)
    //             {
    //                 var firstmovement = first.ToObject<StockMovement>();
    //                 holding = new StockHolding();
    //                 holding.Location.ID = firstmovement.Location.ID;
    //                 holding.Product.ID = firstmovement.Product.ID;
    //                 holding.Style.ID = firstmovement.Style.ID;
    //                 holding.Job.ID = firstmovement.Job.ID;
    //                 holding.Dimensions.CopyFrom(firstmovement.Dimensions);
    //             }
    //
    //             holding.Recalculate(selected.ToObjects<StockMovement>());
    //
    //             if (holding.Units.IsEffectivelyEqual(0.0) && holding.Available.IsEffectivelyEqual(0.0))
    //             {
    //                 if (holding.ID != Guid.Empty)
    //                     toDelete.Add(holding);
    //             }
    //             else if (holding.IsChanged())
    //             {
    //                 AddMessage(holding.ID != Guid.Empty ? "updated" : "added");
    //                 updates.Add(holding);
    //             }
    //
    //             foreach (var row in selected)
    //                 movements.Rows.Remove(row);
    //         }
    //
    //         toDelete.AddRange(holdings.Rows.ToObjects<StockHolding>());
    //         foreach (var holding in toDelete)
    //             AddMessage("deleted");
    //
    //         if (updates.Any())
    //         {
    //             result = true;
    //             progress.Report($"Updating {updates.Count} Holdings");
    //             new Client<StockHolding>().Save(updates.Where(x => x.IsChanged()), "Updated by Recalculation");
    //         }
    //
    //         if (toDelete.Any())
    //         {
    //             result = true;
    //             progress.Report($"Deleting {toDelete.Count} Holdings");
    //             new Client<StockHolding>().Delete(toDelete, "Removed by Recalculation");
    //         }
    //
    //     });
    //     report = new List<String>();
    //     if (messages.Any())
    //         report.AddRange(messages.Select(x => $"{x.Value} holdings {x.Key}"));
    //     else
    //         report.Add("Nothing to Update");
    //
    //     return result;
    // }

}