Added Slop

ViewModels/AdditionsViewModel.cs

@@ -0,0 +1,119 @@
+using System;
+using System.Collections.ObjectModel;
+using System.Linq;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using Lagerprogramm.Models;
+using Lagerprogramm.Services;
+
+namespace Lagerprogramm.ViewModels;
+
+public partial class AdditionsViewModel : ObservableObject
+{
+    private readonly JsonDataService _dataService;
+    private readonly AppData _appData;
+
+    public AppData AppData => _appData;
+
+    [ObservableProperty]
+    private ObservableCollection<Addition> _additions = new();
+
+    [ObservableProperty]
+    private ObservableCollection<TransactionLine> _lines = new();
+
+    [ObservableProperty]
+    private DateTime _date = DateTime.Now;
+
+    [ObservableProperty]
+    private string _comment = string.Empty;
+
+    public ObservableCollection<string> PartNumbers { get; } = new();
+
+    public AdditionsViewModel(JsonDataService dataService, AppData appData)
+    {
+        _dataService = dataService;
+        _appData = appData;
+        RefreshPartNumbers();
+        foreach (var a in appData.Additions.OrderByDescending(a => a.Date))
+            Additions.Add(a);
+        Lines.Add(new TransactionLine());
+    }
+
+    [RelayCommand]
+    private void AddLine() => Lines.Add(new TransactionLine());
+
+    [RelayCommand]
+    private void RemoveLine(TransactionLine? line)
+    {
+        if (line is null) return;
+        Lines.Remove(line);
+    }
+
+    [RelayCommand]
+    private void SearchPart(TransactionLine? line)
+    {
+    }
+
+    [RelayCommand]
+    private void SearchAddition()
+    {
+    }
+
+    [RelayCommand]
+    private void Save()
+    {
+        if (Lines.Count == 0) return;
+        if (Lines.Any(l => string.IsNullOrWhiteSpace(l.PartInternalNumber) || l.Quantity <= 0))
+            return;
+
+        var addition = new Addition
+        {
+            Date = Date,
+            Comment = Comment.Trim(),
+            Lines = Lines.Select(l => new TransactionLine
+            {
+                PartInternalNumber = l.PartInternalNumber.Trim(),
+                Quantity = l.Quantity
+            }).ToList()
+        };
+        _appData.Additions.Add(addition);
+        Additions.Insert(0, addition);
+
+        foreach (var line in addition.Lines)
+        {
+            var part = _appData.Parts.FirstOrDefault(p => p.InternalPartNumber == line.PartInternalNumber);
+            if (part is not null)
+                part.StockQuantity += line.Quantity;
+        }
+
+        _dataService.Save(_appData);
+        Comment = string.Empty;
+        Date = DateTime.Now;
+        Lines.Clear();
+        Lines.Add(new TransactionLine());
+        RefreshPartNumbers();
+    }
+
+    [RelayCommand]
+    private void DeleteAddition(Addition? addition)
+    {
+        if (addition is null) return;
+        foreach (var line in addition.Lines)
+        {
+            var part = _appData.Parts.FirstOrDefault(p => p.InternalPartNumber == line.PartInternalNumber);
+            if (part is not null)
+                part.StockQuantity -= line.Quantity;
+        }
+        _appData.Additions.Remove(addition);
+        Additions.Remove(addition);
+        _dataService.Save(_appData);
+        RefreshPartNumbers();
+    }
+
+    private void RefreshPartNumbers()
+    {
+        PartNumbers.Clear();
+        foreach (var p in _appData.Parts.OrderBy(p => p.InternalPartNumber))
+            PartNumbers.Add(p.InternalPartNumber);
+    }
+}