first step

Billing.Shared/Views/AddBillPage.xaml.cs

@@ -1,4 +1,6 @@
 using System;
+using System.Globalization;
+using System.Linq;
 using Billing.Languages;
 using Billing.Models;
 using Billing.UI;
@@ -8,28 +10,158 @@ namespace Billing.Views
 {
     public partial class AddBillPage : BillingPage
     {
+        private static readonly BindableProperty AmountProperty = BindableProperty.Create(nameof(Amount), typeof(string), typeof(AddBillPage));
+        private static readonly BindableProperty NameProperty = BindableProperty.Create(nameof(Name), typeof(string), typeof(AddBillPage));
+        private static readonly BindableProperty CategoryNameProperty = BindableProperty.Create(nameof(CategoryName), typeof(string), typeof(AddBillPage));
+        private static readonly BindableProperty WalletNameProperty = BindableProperty.Create(nameof(WalletName), typeof(string), typeof(AddBillPage));
+        private static readonly BindableProperty StoreProperty = BindableProperty.Create(nameof(Store), typeof(string), typeof(AddBillPage));
+        private static readonly BindableProperty CreatedTimeProperty = BindableProperty.Create(nameof(CreatedTime), typeof(DateTime), typeof(AddBillPage));
+        private static readonly BindableProperty NoteProperty = BindableProperty.Create(nameof(Note), typeof(string), typeof(AddBillPage));
+
+        public string Amount
+        {
+            get => (string)GetValue(AmountProperty);
+            set => SetValue(AmountProperty, value);
+        }
+        public string Name
+        {
+            get => (string)GetValue(NameProperty);
+            set => SetValue(NameProperty, value);
+        }
+        public string CategoryName => (string)GetValue(CategoryNameProperty);
+        public string WalletName => (string)GetValue(WalletNameProperty);
+        public string Store
+        {
+            get => (string)GetValue(StoreProperty);
+            set => SetValue(StoreProperty, value);
+        }
+        public DateTime CreatedTime
+        {
+            get => (DateTime)GetValue(CreatedTimeProperty);
+            set => SetValue(CreatedTimeProperty, value);
+        }
+        public string Note
+        {
+            get => (string)GetValue(NoteProperty);
+            set => SetValue(NoteProperty, value);
+        }
+
         public Command CheckBill { get; }
+        public Command SelectCategory { get; }
+        public Command SelectWallet { get; }
+
+        public event EventHandler<Bill> BillChecked;
 
         private readonly Bill bill;
         private readonly DateTime createDate;
 
+        private int walletId;
+        private int categoryId;
+
         public AddBillPage(DateTime date)
         {
             createDate = date;
             CheckBill = new Command(OnCheckBill);
+            SelectCategory = new Command(OnSelectCategory);
+            SelectWallet = new Command(OnSelectWallet);
             InitializeComponent();
             Title = Resource.AddBill;
+
+            Initial();
         }
 
         public AddBillPage(Bill bill)
         {
             this.bill = bill;
             CheckBill = new Command(OnCheckBill);
+            SelectCategory = new Command(OnSelectCategory);
+            SelectWallet = new Command(OnSelectWallet);
             InitializeComponent();
             Title = Resource.EditBill;
+
+            Initial();
         }
 
-        private void OnCheckBill()
+        private void Initial()
+        {
+            if (bill != null)
+            {
+                Amount = bill.Amount.ToString(CultureInfo.InvariantCulture);
+                Name = bill.Name;
+                walletId = bill.WalletId;
+                categoryId = bill.CategoryId;
+                SetValue(WalletNameProperty, App.Accounts.FirstOrDefault(a => a.Id == walletId)?.Name);
+                SetValue(CategoryNameProperty, App.Categories.FirstOrDefault(c => c.Id == categoryId)?.Name);
+                Store = bill.Store;
+                CreatedTime = bill.CreateTime;
+                Note = bill.Note;
+            }
+            else
+            {
+                var first = App.Accounts.First();
+                walletId = first.Id;
+                SetValue(WalletNameProperty, first.Name);
+                var firstCategory = App.Categories.First();
+                categoryId = firstCategory.Id;
+                SetValue(CategoryNameProperty, firstCategory.Name);
+                CreatedTime = createDate.Date.Add(DateTime.Now.TimeOfDay);
+            }
+        }
+
+        private async void OnCheckBill()
+        {
+            if (Tap.IsBusy)
+            {
+                return;
+            }
+            using (Tap.Start())
+            {
+                if (!decimal.TryParse(Amount, out decimal amount))
+                {
+                    return;
+                }
+                if (amount == 0)
+                {
+                    await this.ShowMessage(Resource.AmountRequired);
+                    return;
+                }
+                amount = Math.Abs(amount);
+                var category = App.Categories.FirstOrDefault(c => c.Id == categoryId);
+                if (category.Type == CategoryType.Spending)
+                {
+                    amount *= -1;
+                }
+                await Navigation.PopAsync();
+                if (bill != null)
+                {
+                    bill.Amount = amount;
+                    bill.Name = Name;
+                    bill.CategoryId = categoryId;
+                    bill.WalletId = walletId;
+                    bill.CreateTime = CreatedTime;
+                    bill.Store = Store;
+                    bill.Note = Note;
+                }
+                BillChecked?.Invoke(this, bill ?? new Bill
+                {
+                    Id = -1,
+                    Amount = amount,
+                    Name = Name,
+                    CategoryId = categoryId,
+                    WalletId = walletId,
+                    CreateTime = CreatedTime,
+                    Store = Store,
+                    Note = Note
+                });
+            }
+        }
+
+        private void OnSelectCategory()
+        {
+
+        }
+
+        private void OnSelectWallet()
         {
 
         }