complete account page

Billing.Shared/App.cs

@@ -1,4 +1,8 @@
-using Billing.Languages;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Billing.Languages;
+using Billing.Models;
+using Billing.Store;
 using Billing.Themes;
 using Xamarin.Essentials;
 using Xamarin.Forms;
@@ -9,6 +13,13 @@ namespace Billing
     {
         public static AppTheme CurrentTheme { get; private set; }
         public static PlatformCulture CurrentCulture { get; private set; }
+        public static List<Bill> Bills => bills ??= new List<Bill>();
+        public static List<Account> Accounts => accounts ??= new List<Account>();
+        public static List<Category> Categories => categories ??= new List<Category>();
+
+        private static List<Bill> bills;
+        private static List<Account> accounts;
+        private static List<Category> categories;
 
         public App()
         {
@@ -19,8 +30,21 @@ namespace Billing
             Shell.Current.GoToAsync("//Bills");
         }
 
+        public static void WriteAccounts() => StoreHelper.WriteAccounts(accounts);
+
+        public static void WriteBills() => StoreHelper.WriteBills(bills);
+
         protected override void OnStart()
         {
+            Helper.Debug($"personal folder: {StoreHelper.PersonalFolder}");
+            Helper.Debug($"cache folder: {StoreHelper.CacheFolder}");
+
+            Task.Run(() =>
+            {
+                accounts = StoreHelper.GetAccounts();
+                categories = StoreHelper.GetCategories();
+                bills = StoreHelper.GetBills();
+            });
         }
 
         protected override void OnResume()

Billing.Shared/Billing.Shared.projitems

@@ -22,7 +22,6 @@
       <DependentUpon>MainShell.xaml</DependentUpon>
     </Compile>
     <Compile Include="$(MSBuildThisFileDirectory)Models\BaseModel.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)Models\Billing.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Models\Category.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Models\Account.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Themes\BaseTheme.cs" />
@@ -59,6 +58,8 @@
       <DependentUpon>SettingPage.xaml</DependentUpon>
     </Compile>
     <Compile Include="$(MSBuildThisFileDirectory)UI\OptionsCells.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Store\StoreHelper.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Models\Bill.cs" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="$(MSBuildThisFileDirectory)MainShell.xaml">
@@ -95,4 +96,7 @@
       <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
     </EmbeddedResource>
   </ItemGroup>
+  <ItemGroup>
+    <Folder Include="$(MSBuildThisFileDirectory)Store\" />
+  </ItemGroup>
 </Project>

Billing.Shared/Helper.cs

@@ -1,9 +1,11 @@
 using System;
+using Xamarin.Essentials;
 
 namespace Billing
 {
     internal static class Helper
     {
+#if DEBUG
         public static void Debug(string message)
         {
             var time = DateTime.Now.ToString("HH:mm:ss.fff");
@@ -20,5 +22,36 @@ namespace Billing
             var time = DateTime.Now.ToString("HH:mm:ss.fff");
             System.Diagnostics.Debug.Fail($"[{time}] - {category}", message);
         }
+#else
+#pragma warning disable IDE0060 // Remove unused parameter
+        public static void Debug(string message)
+        {
+        }
+
+        public static void Error(string category, Exception ex)
+        {
+        }
+
+        public static void Error(string category, string message)
+        {
+        }
+#pragma warning restore IDE0060 // Remove unused parameter
+#endif
+
+        public static bool NetworkAvailable
+        {
+            get
+            {
+                try
+                {
+                    return Connectivity.NetworkAccess == NetworkAccess.Internet
+                        || Connectivity.NetworkAccess == NetworkAccess.ConstrainedInternet;
+                }
+                catch
+                {
+                    return false;
+                }
+            }
+        }
     }
 }

Billing.Shared/Languages/Resource.cs

@@ -14,6 +14,8 @@ namespace Billing.Languages
         public static string CreditCard => Text(nameof(CreditCard));
         public static string DebitCard => Text(nameof(DebitCard));
         public static string ElecAccount => Text(nameof(ElecAccount));
+        public static string AddBill => Text(nameof(AddBill));
+        public static string EditBill => Text(nameof(EditBill));
 
         static readonly Dictionary<string, LanguageResource> dict = new();
 

Billing.Shared/Languages/en.xml

@@ -32,4 +32,8 @@
 	<DebitCard>Debit Card</DebitCard>
 	<ElecAccount>Electronic Account</ElecAccount>
 	<IconSelector>Icon Selection</IconSelector>
+	<AddBill>Add Billing</AddBill>
+	<EditBill>Edit Billing</EditBill>
+	<Account>Account</Account>
+	<CreatedTime>Created Time</CreatedTime>
 </root>

Billing.Shared/Languages/zh-CN.xml

@@ -32,4 +32,8 @@
 	<DebitCard>储蓄卡</DebitCard>
 	<ElecAccount>电子账户</ElecAccount>
 	<IconSelector>图标选择</IconSelector>
+	<AddBill>增加账单</AddBill>
+	<EditBill>编辑账单</EditBill>
+	<Account>账户</Account>
+	<CreatedTime>创建时间</CreatedTime>
 </root>

Billing.Shared/Models/BaseModel.cs

@@ -161,11 +161,12 @@ namespace Billing.Models
 
         public override string ToString()
         {
-            XDocument xdoc = ToXml();
             using MemoryStream ms = new();
-            using StreamWriter writer = new(ms, Encoding.UTF8);
-            xdoc.Save(writer, SaveOptions.DisableFormatting);
-            writer.Flush();
+            //using StreamWriter writer = new(ms, Encoding.UTF8);
+            //XDocument xdoc = ToXml();
+            //xdoc.Save(writer, SaveOptions.DisableFormatting);
+            //writer.Flush();
+            SaveToStream(ms);
             ms.Seek(0, SeekOrigin.Begin);
             using StreamReader reader = new(ms, Encoding.UTF8);
             return reader.ReadToEnd();

Billing.Shared/Models/Bill.cs

@@ -3,7 +3,7 @@ using System.Xml.Linq;
 
 namespace Billing.Models
 {
-    public class Billing : BaseModel
+    public class Bill : BaseModel
     {
         public decimal Amount { get; set; }
         public string Name { get; set; }

Billing.Shared/Models/Category.cs

@@ -5,6 +5,7 @@ namespace Billing.Models
     public class Category : BaseModel
     {
         public int Id { get; set; }
+        public CategoryType Type { get; set; }
         public string Icon { get; set; } = ICON_DEFAULT;
         public string Name { get; set; }
         public int? ParentId { get; set; }
@@ -12,6 +13,7 @@ namespace Billing.Models
         public override void OnXmlDeserialize(XElement node)
         {
             Id = Read(node, nameof(Id), 0);
+            Type = (CategoryType)Read(node, nameof(Type), 0);
             Icon = Read(node, nameof(Icon), ICON_DEFAULT);
             Name = Read(node, nameof(Name), string.Empty);
             var parentId = Read(node, nameof(ParentId), -1);
@@ -24,6 +26,7 @@ namespace Billing.Models
         public override void OnXmlSerialize(XElement node)
         {
             Write(node, nameof(Id), Id);
+            Write(node, nameof(Type), (int)Type);
             Write(node, nameof(Icon), Icon);
             Write(node, nameof(Name), Name);
             if (ParentId != null)
@@ -32,4 +35,10 @@ namespace Billing.Models
             }
         }
     }
+
+    public enum CategoryType
+    {
+        Spending,
+        Income
+    }
 }

Billing.Shared/Store/StoreHelper.cs

@@ -0,0 +1,103 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using Billing.Models;
+using Billing.UI;
+using Xamarin.Essentials;
+
+namespace Billing.Store
+{
+    public class StoreHelper
+    {
+        public static readonly string PersonalFolder = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
+        public static readonly string CacheFolder = FileSystem.CacheDirectory;
+
+        private const string accountFile = "accounts.xml";
+        private const string billFile = "bills.xml";
+        private const string categoryFile = "categories.xml";
+
+        private static StoreHelper instance;
+        private static StoreHelper Instance => instance ??= new StoreHelper();
+
+        public static List<Account> GetAccounts() => Instance.GetAccountsInternal();
+        public static void WriteAccounts(IEnumerable<Account> accounts) => Instance.WriteAccountsInternal(accounts);
+        public static List<Bill> GetBills() => Instance.GetBillsInternal();
+        public static void WriteBills(IEnumerable<Bill> bills) => Instance.WriteBillsInternal(bills);
+        public static List<Category> GetCategories() => Instance.GetCategoriesInternal();
+        public static void WriteCategories(IEnumerable<Category> categories) => Instance.WriteCategoriesInternal(categories);
+
+        private StoreHelper() { }
+
+        private List<Account> GetAccountsInternal()
+        {
+            return GetList<Account>(Path.Combine(PersonalFolder, accountFile));
+        }
+
+        private void WriteAccountsInternal(IEnumerable<Account> accounts)
+        {
+            var filename = Path.Combine(PersonalFolder, accountFile);
+            WriteList(filename, accounts);
+        }
+
+        private List<Bill> GetBillsInternal()
+        {
+            return GetList<Bill>(Path.Combine(PersonalFolder, billFile));
+        }
+
+        private void WriteBillsInternal(IEnumerable<Bill> bills)
+        {
+            var filename = Path.Combine(PersonalFolder, billFile);
+            WriteList(filename, bills);
+        }
+
+        private List<Category> GetCategoriesInternal()
+        {
+            return GetList<Category>(Path.Combine(PersonalFolder, categoryFile));
+        }
+
+        private void WriteCategoriesInternal(IEnumerable<Category> categories)
+        {
+            var filename = Path.Combine(PersonalFolder, categoryFile);
+            WriteList(filename, categories);
+        }
+
+        #region Helper
+
+        private void WriteList<T>(string filename, IEnumerable<T> list) where T : IModel, new()
+        {
+            if (list == null)
+            {
+                return;
+            }
+            try
+            {
+                using var stream = File.OpenWrite(filename);
+                list.ToStream(stream);
+            }
+            catch (Exception ex)
+            {
+                Helper.Error("file.write", $"failed to write file: {filename}, error: {ex.Message}");
+            }
+        }
+
+        private List<T> GetList<T>(string file) where T : IModel, new()
+        {
+            try
+            {
+                if (File.Exists(file))
+                {
+                    using var stream = File.OpenRead(file);
+                    var list = ModelExtensionHelper.FromStream<T>(stream);
+                    return list;
+                }
+            }
+            catch (Exception ex)
+            {
+                Helper.Error("file.read", $"failed to read file: {file}, error: {ex.Message}");
+            }
+            return default;
+        }
+
+        #endregion
+    }
+}

Billing.Shared/Themes/BaseTheme.cs

@@ -23,6 +23,7 @@ namespace Billing.Themes
         public const string TextColor = nameof(TextColor);
         public const string SecondaryTextColor = nameof(SecondaryTextColor);
         public const string RedColor = nameof(RedColor);
+        public const string GreenColor = nameof(GreenColor);
 
         protected abstract Color PrimaryMauiColor { get; }
         protected abstract Color SecondaryMauiColor { get; }

Billing.Shared/Themes/Dark.cs

@@ -28,6 +28,7 @@ namespace Billing.Themes
             Add(TextColor, Color.FromRgb(0xcc, 0xcc, 0xcc));
             Add(SecondaryTextColor, Color.LightGray);
             Add(RedColor, Color.FromRgb(211, 5, 5));
+            Add(GreenColor, Color.FromRgb(5, 211, 5));
 
             Add(new Style(typeof(TabBar))
             {

Billing.Shared/Themes/Light.cs

@@ -28,6 +28,7 @@ namespace Billing.Themes
             Add(TextColor, Color.FromRgb(0x33, 0x33, 0x33));
             Add(SecondaryTextColor, Color.DimGray);
             Add(RedColor, Color.FromRgb(211, 64, 85));
+            Add(RedColor, Color.FromRgb(64, 211, 85));
 
             Add(new Style(typeof(TabBar))
             {

Billing.Shared/UI/Converters.cs

@@ -1,5 +1,7 @@
 using Billing.Languages;
 using Billing.Models;
+using Billing.Themes;
+using Billing.Views;
 using System;
 using System.Collections.Generic;
 using System.Globalization;
@@ -20,18 +22,23 @@ namespace Billing.UI
 
         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
         {
-            return value;
+            throw new NotImplementedException();
         }
     }
 
     public class MoneyConverter : IValueConverter
     {
         public bool MarkVisible { get; set; } = true;
+        public bool Absolute { get; set; }
 
         public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
         {
             if (value is decimal d)
             {
+                if (Absolute)
+                {
+                    d = Math.Abs(d);
+                }
                 var number = d.ToString("n2");
                 if (MarkVisible)
                 {
@@ -60,6 +67,46 @@ namespace Billing.UI
         }
     }
 
+    public class BalanceColorConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            var resource = Application.Current.Resources;
+            if (value is decimal d)
+            {
+                if (d >= 0)
+                {
+                    return resource[BaseTheme.GreenColor];
+                }
+                return resource[BaseTheme.RedColor];
+            }
+            return resource[BaseTheme.TextColor];
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+
+    public class UIBillConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is UIBill bill)
+            {
+                var time = bill.DateCreation.ToString("HH:mm");
+                return $"{time} ({bill.Wallet})";
+            }
+            return string.Empty;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+
     public class NotNullConverter : IValueConverter
     {
         public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
@@ -69,7 +116,7 @@ namespace Billing.UI
 
         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
         {
-            return value;
+            throw new NotImplementedException();
         }
     }
 
@@ -93,7 +140,7 @@ namespace Billing.UI
 
         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
         {
-            return value;
+            throw new NotImplementedException();
         }
     }
 
@@ -151,7 +198,7 @@ namespace Billing.UI
 
         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
         {
-            return value;
+            throw new NotImplementedException();
         }
     }
 }

Billing.Shared/UI/Definition.cs

@@ -1,4 +1,8 @@
 using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Xml.Linq;
+using Billing.Models;
 using Xamarin.Forms;
 
 namespace Billing.UI
@@ -75,6 +79,51 @@ namespace Billing.UI
         }
     }
 
+    public static class ModelExtensionHelper
+    {
+        public static List<T> FromStream<T>(Stream stream) where T : IModel, new()
+        {
+            XDocument doc = XDocument.Load(stream);
+            var root = doc.Root;
+            var list = new List<T>();
+            foreach (XElement ele in root.Elements("item"))
+            {
+                if (ele.Attribute("null")?.Value == "1")
+                {
+                    list.Add(default);
+                }
+                else
+                {
+                    T value = new();
+                    value.OnXmlDeserialize(ele);
+                    list.Add(value);
+                }
+            }
+            return list;
+        }
+
+        public static void ToStream<T>(this IEnumerable<T> list, Stream stream) where T : IModel
+        {
+            XElement root = new("root");
+            foreach (var t in list)
+            {
+                XElement item = new("item");
+                if (t == null)
+                {
+                    item.Add(new XAttribute("null", 1));
+                }
+                else
+                {
+                    t.OnXmlSerialize(item);
+                }
+                root.Add(item);
+            }
+
+            XDocument doc = new(new XDeclaration("1.0", "utf-8", "yes"), root);
+            doc.Save(stream, SaveOptions.DisableFormatting);
+        }
+    }
+
     public class Tap : IDisposable
     {
         private readonly static object sync = new();

Billing.Shared/UI/GroupStackLayout.cs

@@ -1,7 +1,4 @@
 using System.Collections;
-using System.Collections.Generic;
-using System.Collections.Specialized;
-using System.Linq;
 using Xamarin.Forms;
 
 namespace Billing.UI

Billing.Shared/Views/AccountPage.xaml

@@ -14,6 +14,7 @@
     <ContentPage.Resources>
         <ui:MoneyConverter x:Key="moneyConverter"/>
         <ui:MoneyConverter x:Key="money2Converter" MarkVisible="False"/>
+        <ui:AccountCategoryConverter x:Key="categoryConverter"/>
         <ui:IconConverter x:Key="iconConverter"/>
     </ContentPage.Resources>
 
@@ -43,11 +44,12 @@
                            Text="{Binding Liability, Converter={StaticResource moneyConverter}}"/>
                 </Grid>
             </Grid>
-            <ui:GroupStackLayout x:Name="groupLayout" ItemsSource="{Binding Accounts}">
+            <ui:GroupStackLayout x:Name="groupLayout" ItemsSource="{Binding Accounts}" Margin="0, 10, 0, 0">
                 <ui:GroupStackLayout.GroupHeaderTemplate>
                     <DataTemplate x:DataType="v:AccountGrouping">
                         <StackLayout Orientation="Horizontal" Padding="10, 0">
-                            <Label Text="{Binding Key}" TextColor="{DynamicResource SecondaryTextColor}"/>
+                            <Label Text="{Binding Key, Converter={StaticResource categoryConverter}}"
+                                   TextColor="{DynamicResource SecondaryTextColor}"/>
                             <Label Text="{Binding Balance, Converter={StaticResource money2Converter}}"
                                    Margin="10, 0" TextColor="{DynamicResource SecondaryTextColor}"/>
                         </StackLayout>
@@ -55,7 +57,7 @@
                 </ui:GroupStackLayout.GroupHeaderTemplate>
                 <ui:GroupStackLayout.ItemTemplate>
                     <DataTemplate x:DataType="m:Account">
-                        <StackLayout Orientation="Horizontal" Padding="20, 0, 10, 0" HeightRequest="44" Spacing="10">
+                        <StackLayout Orientation="Horizontal" Padding="20, 0, 10, 0" Spacing="10">
                             <ui:TintImage Source="{Binding Icon, Converter={StaticResource iconConverter}}"
                                           WidthRequest="26" HeightRequest="20" VerticalOptions="Center"/>
                             <Label Text="{Binding Name}" TextColor="{DynamicResource TextColor}"

Billing.Shared/Views/AccountPage.xaml.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 using Billing.Models;
 using Billing.UI;
 using Xamarin.Forms;
@@ -20,17 +21,57 @@ namespace Billing.Views
 
         public Command AddAccount { get; }
 
-        private readonly List<AccountGrouping> accounts;
+        private readonly List<AccountGrouping> accounts = new();
+        private bool initialized;
 
         public AccountPage()
         {
             AddAccount = new Command(OnAddAccount);
-            accounts = new List<AccountGrouping>();
             SetValue(AccountsProperty, accounts);
 
             InitializeComponent();
         }
 
+        protected override void OnAppearing()
+        {
+            if (!initialized)
+            {
+                initialized = true;
+                accounts.Clear();
+                foreach (var account in App.Accounts)
+                {
+                    AddToAccountGroup(account);
+                }
+            }
+            groupLayout.Refresh(accounts);
+        }
+
+        private void AddToAccountGroup(Account account)
+        {
+            int maxId;
+            if (accounts.Count > 0)
+            {
+                maxId = accounts.Max(g => g.Max(a => a.Id));
+            }
+            else
+            {
+                maxId = -1;
+            }
+            account.Id = maxId + 1;
+
+            var group = accounts.FirstOrDefault(g => g.Key == account.Category);
+            if (group == null)
+            {
+                group = new AccountGrouping(account.Category, account.Balance) { account };
+                accounts.Add(group);
+            }
+            else
+            {
+                group.Add(account);
+                group.Balance += account.Balance;
+            }
+        }
+
         private async void OnAddAccount()
         {
             if (Tap.IsBusy)
@@ -47,28 +88,23 @@ namespace Billing.Views
 
         private void AccountChecked(object sender, AccountEventArgs e)
         {
-            Helper.Debug(e.Account.ToString());
-            var group = accounts.FirstOrDefault(g => g.Key == e.Account.Category);
-            if (group == null)
-            {
-                group = new AccountGrouping(e.Account.Category)
-                {
-                    e.Account
-                };
-                accounts.Add(group);
-            }
-            else
-            {
-                group.Add(e.Account);
-            }
+            App.Accounts.Add(e.Account);
+            AddToAccountGroup(e.Account);
             groupLayout.Refresh(accounts);
+
+            Task.Run(App.WriteAccounts);
         }
     }
 
     public class AccountGrouping : List<Account>, IGrouping<AccountCategory, Account>
     {
-        public AccountGrouping(AccountCategory key) : base() => Key = key;
         public AccountCategory Key { get; }
         public decimal Balance { get; set; }
+
+        public AccountGrouping(AccountCategory key, decimal balance) : base()
+        {
+            Key = key;
+            Balance = balance;
+        }
     }
 }

Billing.Shared/Views/AddAccountPage.xaml

@@ -1,15 +1,14 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <ui:BillingPage xmlns="http://xamarin.com/schemas/2014/forms"
+                xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                 xmlns:r="clr-namespace:Billing.Languages"
                 xmlns:ui="clr-namespace:Billing.UI"
                 xmlns:v="clr-namespace:Billing.Views"
-                xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                 x:Class="Billing.Views.AddAccountPage"
                 x:Name="addAccountPage"
                 x:DataType="v:AddAccountPage"
                 Title="{r:Text AddAccount}"
-                BindingContext="{x:Reference addAccountPage}"
-                NavigationPage.BackButtonTitle="">
+                BindingContext="{x:Reference addAccountPage}">
 
     <ContentPage.Resources>
         <ui:AccountCategoryConverter x:Key="categoryConverter"/>
@@ -42,7 +41,7 @@
                 </TableSection.Title>
                 <ui:OptionEntryCell Height="44" Icon="sackdollar.png" Keyboard="Numeric"
                                     Title="{r:Text Balance}"
-                                    Text="{Binding Balance, Mode=TwoWay}"
+                                    Text="{Binding Initial, Mode=TwoWay}"
                                     Placeholder="{r:Text BalancePlaceholder}"/>
                 <ui:OptionTextCell Height="44" Icon="yuan.png"
                                    Title="{r:Text Currency}"

Billing.Shared/Views/AddAccountPage.xaml.cs

@@ -12,7 +12,7 @@ namespace Billing.Views
         private static readonly BindableProperty AccountNameProperty = BindableProperty.Create(nameof(AccountName), typeof(string), typeof(AddAccountPage));
         private static readonly BindableProperty AccountIconProperty = BindableProperty.Create(nameof(AccountIcon), typeof(string), typeof(AddAccountPage));
         private static readonly BindableProperty CategoryProperty = BindableProperty.Create(nameof(Category), typeof(AccountCategory), typeof(AddAccountPage));
-        private static readonly BindableProperty BalanceProperty = BindableProperty.Create(nameof(Balance), typeof(decimal), typeof(AddAccountPage));
+        private static readonly BindableProperty InitialProperty = BindableProperty.Create(nameof(Initial), typeof(string), typeof(AddAccountPage));
         private static readonly BindableProperty MemoProperty = BindableProperty.Create(nameof(Memo), typeof(string), typeof(AddAccountPage));
 
         public string AccountName
@@ -30,10 +30,10 @@ namespace Billing.Views
             get => (AccountCategory)GetValue(CategoryProperty);
             set => SetValue(CategoryProperty, value);
         }
-        public decimal Balance
+        public string Initial
         {
-            get => (decimal)GetValue(BalanceProperty);
-            set => SetValue(BalanceProperty, value);
+            get => (string)GetValue(InitialProperty);
+            set => SetValue(InitialProperty, value);
         }
         public string Memo
         {
@@ -54,6 +54,7 @@ namespace Billing.Views
             CheckAccount = new Command(OnCheckAccount);
             SelectIcon = new Command(OnSelectIcon);
             SelectCategory = new Command(OnSelectCategory);
+
             AccountIcon = BaseModel.ICON_DEFAULT;
             Category = AccountCategory.Cash;
             InitializeComponent();
@@ -61,13 +62,16 @@ namespace Billing.Views
 
         public AddAccountPage(Account account)
         {
+            CheckAccount = new Command(OnCheckAccount);
+            SelectIcon = new Command(OnSelectIcon);
+            SelectCategory = new Command(OnSelectCategory);
+
             this.account = account;
             AccountName = account.Name;
             AccountIcon = account.Icon;
             Category = account.Category;
-            Balance = account.Balance;
+            Initial = account.Initial.ToString();
             Memo = account.Memo;
-            CheckAccount = new Command(OnCheckAccount);
             InitializeComponent();
         }
 
@@ -80,6 +84,7 @@ namespace Billing.Views
             using (Tap.Start())
             {
                 await Navigation.PopAsync();
+                _ = decimal.TryParse(Initial, out decimal initial);
                 AccountChecked?.Invoke(this, new AccountEventArgs
                 {
                     Account = new Account
@@ -88,7 +93,8 @@ namespace Billing.Views
                         Name = AccountName,
                         Icon = AccountIcon,
                         Category = Category,
-                        Balance = Balance,
+                        Initial = initial,
+                        Balance = initial,
                         Memo = Memo
                     }
                 });

Billing.Shared/Views/AddBillPage.xaml

@@ -1,15 +1,52 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <ui:BillingPage xmlns="http://xamarin.com/schemas/2014/forms"
+                xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+                xmlns:r="clr-namespace:Billing.Languages"
                 xmlns:ui="clr-namespace:Billing.UI"
                 xmlns:v="clr-namespace:Billing.Views"
-                xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                 x:Class="Billing.Views.AddBillPage"
+                x:Name="billPage"
                 x:DataType="v:AddBillPage"
-                Title="Add Billing">
+                BindingContext="{x:Reference billPage}">
 
-    <StackLayout>
-        <Label Text="Add a billing here..."
-                VerticalOptions="CenterAndExpand" 
-                HorizontalOptions="CenterAndExpand" />
-    </StackLayout>
+    <ContentPage.ToolbarItems>
+        <ToolbarItem Order="Primary" IconImageSource="check.png" Command="{Binding CheckBill}"/>
+    </ContentPage.ToolbarItems>
+
+    <ContentPage.Content>
+        <TableView Intent="Settings" HasUnevenRows="True">
+            <TableSection Title=" ">
+                <ui:OptionEditorCell Height="120" Icon="pencil.png" FontSize="20" Keyboard="Text"
+                                     Title="{r:Text Account}"
+                                     Text="{Binding AccountName, Mode=TwoWay}"
+                                     Placeholder="0.00"/>
+            </TableSection>
+            <TableSection>
+                <TableSection.Title>
+                    <OnPlatform x:TypeArguments="x:String" Android=" "/>
+                </TableSection.Title>
+                <ui:OptionSelectCell Height="44" Icon="project.png"
+                                     Title="{r:Text Category}"
+                                     Detail="{Binding Category, Converter={StaticResource categoryConverter}}"
+                                     Command="{Binding SelectCategory}"/>
+                <ui:OptionSelectCell Height="44" Icon="project.png"
+                                     Title="{r:Text Account}"
+                                     Detail="{Binding Category, Converter={StaticResource categoryConverter}}"
+                                     Command="{Binding SelectCategory}"/>
+                <ui:OptionSelectCell Height="44" Icon="project.png"
+                                     Title="{r:Text CreatedTime}"
+                                     Detail="{Binding Category, Converter={StaticResource categoryConverter}}"
+                                     Command="{Binding SelectCategory}"/>
+            </TableSection>
+            <TableSection>
+                <TableSection.Title>
+                    <OnPlatform x:TypeArguments="x:String" Android=" "/>
+                </TableSection.Title>
+                <ui:OptionEditorCell Height="120" Icon="note.png" Keyboard="Plain"
+                                     Title="{r:Text Memo}"
+                                     Text="{Binding Memo, Mode=TwoWay}"
+                                     Placeholder="{r:Text MemoPlaceholder}"/>
+            </TableSection>
+        </TableView>
+    </ContentPage.Content>
 </ui:BillingPage>

Billing.Shared/Views/AddBillPage.xaml.cs

@@ -1,12 +1,37 @@
+using System;
+using Billing.Languages;
+using Billing.Models;
 using Billing.UI;
+using Xamarin.Forms;
 
 namespace Billing.Views
 {
     public partial class AddBillPage : BillingPage
     {
-        public AddBillPage()
+        public Command CheckBill { get; }
+
+        private readonly Bill bill;
+        private readonly DateTime createDate;
+
+        public AddBillPage(DateTime date)
         {
+            createDate = date;
+            CheckBill = new Command(OnCheckBill);
             InitializeComponent();
+            Title = Resource.AddBill;
+        }
+
+        public AddBillPage(Bill bill)
+        {
+            this.bill = bill;
+            CheckBill = new Command(OnCheckBill);
+            InitializeComponent();
+            Title = Resource.EditBill;
+        }
+
+        private void OnCheckBill()
+        {
+
         }
     }
 }

Billing.Shared/Views/BillPage.xaml

@@ -12,6 +12,10 @@
 
     <ContentPage.Resources>
         <ui:TitleDateConverter x:Key="titleDateConverter"/>
+        <ui:MoneyConverter x:Key="moneyConverter" MarkVisible="False" Absolute="True"/>
+        <ui:BalanceColorConverter x:Key="colorConverter"/>
+        <ui:UIBillConverter x:Key="billConverter"/>
+        <ui:IconConverter x:Key="iconConverter"/>
     </ContentPage.Resources>
 
     <Shell.TitleView>
@@ -26,27 +30,44 @@
         </Grid>
     </Shell.TitleView>
 
-    <Grid RowDefinitions="Auto,*">
+    <Grid RowDefinitions="Auto, Auto, *">
         <ui:BillingDate x:Name="billingDate" SelectedDate="{Binding SelectedDate}" DateSelected="OnDateSelected"/>
-        <ScrollView Grid.Row="1">
-            <Grid Padding="8" ColumnSpacing="8" ColumnDefinitions="Auto, *, Auto"
-                  BackgroundColor="{DynamicResource PromptBackgroundColor}"
-                  VerticalOptions="Start">
-                <ui:TintImage Source="bars.png" WidthRequest="23" HeightRequest="23"/>
-                <Label Grid.Column="1" Text="{r:Text NoRecords}" TextColor="{DynamicResource TextColor}"
+        <Grid Grid.Row="1" Padding="8" ColumnSpacing="8" ColumnDefinitions="Auto, *, Auto"
+              BackgroundColor="{DynamicResource PromptBackgroundColor}">
+            <ui:TintImage Source="bars.png" WidthRequest="23" HeightRequest="23"/>
+            <Label Grid.Column="1" Text="{r:Text NoRecords}" TextColor="{DynamicResource TextColor}"
+                   VerticalOptions="Center"/>
+            <StackLayout Grid.Column="2" Orientation="Horizontal" Spacing="6">
+                <StackLayout.GestureRecognizers>
+                    <TapGestureRecognizer Command="{Binding AddBilling}"/>
+                </StackLayout.GestureRecognizers>
+                <Label Text="{r:Text TapToMemo}" TextColor="{DynamicResource PrimaryColor}"
                        VerticalOptions="Center"/>
-                <StackLayout Grid.Column="2" Orientation="Horizontal" Spacing="6">
-                    <StackLayout.GestureRecognizers>
-                        <TapGestureRecognizer Command="{Binding AddBilling}"/>
-                    </StackLayout.GestureRecognizers>
-                    <Label Text="{r:Text TapToMemo}" TextColor="{DynamicResource PrimaryColor}"
-                           VerticalOptions="Center"/>
-                    <!--<Label Style="{DynamicResource IconLightStyle}"
-                           Text="{x:Static local:Definition.IconRight}"
-                           TextColor="{DynamicResource TabBarUnselectedColor}"/>-->
-                    <ui:TintImage Source="right.png" WidthRequest="24" HeightRequest="24"/>
-                </StackLayout>
-            </Grid>
+                <ui:TintImage Source="right.png" WidthRequest="24" HeightRequest="24"/>
+            </StackLayout>
+        </Grid>
+        <!-- bill list -->
+        <ScrollView Grid.Row="2">
+            <ui:GroupStackLayout x:Name="billsLayout" ItemsSource="{Binding Bills}" Margin="0, 10, 0, 0">
+                <ui:GroupStackLayout.ItemTemplate>
+                    <DataTemplate x:DataType="v:UIBill">
+                        <Grid Padding="20, 0, 10, 0" ColumnSpacing="10"
+                              ColumnDefinitions="Auto, *, Auto" RowDefinitions="Auto, Auto">
+                            <ui:TintImage Source="{Binding Icon, Converter={StaticResource iconConverter}}"
+                                          WidthRequest="26" HeightRequest="20" VerticalOptions="Center"/>
+                            <Label Grid.Column="1" Text="{Binding Name}" TextColor="{DynamicResource TextColor}"
+                                   VerticalOptions="Center"
+                                   FontSize="Default" FontAttributes="Bold"/>
+                            <Label Grid.Column="2" Text="{Binding Amount, Converter={StaticResource moneyConverter}}"
+                                   TextColor="{Binding Amount, Converter={StaticResource colorConverter}}"
+                                   VerticalOptions="Center"/>
+                            <Label Grid.Row="1" Grid.Column="1" Text="{Binding ., Converter={StaticResource billConverter}}"
+                                   FontSize="Small"
+                                   TextColor="{DynamicResource SecondaryTextColor}"/>
+                        </Grid>
+                    </DataTemplate>
+                </ui:GroupStackLayout.ItemTemplate>
+            </ui:GroupStackLayout>
         </ScrollView>
         <!--<ui:CircleButton Grid.Row="1" VerticalOptions="End" HorizontalOptions="End"
                          Margin="20" Padding="0"

Billing.Shared/Views/BillPage.xaml.cs

@@ -1,5 +1,8 @@
+using Billing.Models;
 using Billing.UI;
 using System;
+using System.Collections.Generic;
+using System.Linq;
 using Xamarin.Forms;
 
 namespace Billing.Views
@@ -7,12 +10,18 @@ namespace Billing.Views
     public partial class BillPage : BillingPage
     {
         private static readonly BindableProperty SelectedDateProperty = BindableProperty.Create(nameof(SelectedDate), typeof(DateTime), typeof(BillPage));
+        private static readonly BindableProperty BillsProperty = BindableProperty.Create(nameof(Bills), typeof(List<UIBill>), typeof(BillPage));
 
         public DateTime SelectedDate
         {
             get => (DateTime)GetValue(SelectedDateProperty);
             set => SetValue(SelectedDateProperty, value);
         }
+        public List<UIBill> Bills
+        {
+            get => (List<UIBill>)GetValue(BillsProperty);
+            set => SetValue(BillsProperty, value);
+        }
 
         public Command AddBilling { get; }
 
@@ -29,7 +38,18 @@ namespace Billing.Views
         {
             SelectedDate = e.Date;
 
-            // TODO: while selecting date
+            var bills = App.Bills.Where(b =>
+                b.CreateTime.Year == e.Date.Year &&
+                b.CreateTime.Month == e.Date.Month &&
+                b.CreateTime.Day == e.Date.Day);
+            Bills = new List<UIBill>(bills.Select(b => new UIBill(b)
+            {
+                Icon = App.Categories.FirstOrDefault(c => c.Id == b.CategoryId)?.Icon ?? BaseModel.ICON_DEFAULT,
+                Name = b.Name,
+                DateCreation = b.CreateTime,
+                Amount = b.Amount,
+                Wallet = App.Accounts.FirstOrDefault(a => a.Id == b.WalletId)?.Name
+            }));
         }
 
         private void OnTitleDateLongPressed(object sender, EventArgs e)
@@ -45,8 +65,51 @@ namespace Billing.Views
             }
             using (Tap.Start())
             {
-                await Navigation.PushAsync(new AddBillPage());
+                var page = new AddBillPage(SelectedDate);
+                await Navigation.PushAsync(page);
             }
         }
     }
+
+    public class UIBill : BindableObject
+    {
+        public static readonly BindableProperty IconProperty = BindableProperty.Create(nameof(Icon), typeof(string), typeof(UIBill));
+        public static readonly BindableProperty NameProperty = BindableProperty.Create(nameof(Name), typeof(string), typeof(UIBill));
+        public static readonly BindableProperty DateCreationProperty = BindableProperty.Create(nameof(DateCreation), typeof(DateTime), typeof(UIBill));
+        public static readonly BindableProperty AmountProperty = BindableProperty.Create(nameof(Amount), typeof(decimal), typeof(UIBill));
+        public static readonly BindableProperty WalletProperty = BindableProperty.Create(nameof(Wallet), typeof(string), typeof(UIBill));
+
+        public string Icon
+        {
+            get => (string)GetValue(IconProperty);
+            set => SetValue(IconProperty, value);
+        }
+        public string Name
+        {
+            get => (string)GetValue(NameProperty);
+            set => SetValue(NameProperty, value);
+        }
+        public DateTime DateCreation
+        {
+            get => (DateTime)GetValue(DateCreationProperty);
+            set => SetValue(DateCreationProperty, value);
+        }
+        public decimal Amount
+        {
+            get => (decimal)GetValue(AmountProperty);
+            set => SetValue(AmountProperty, value);
+        }
+        public string Wallet
+        {
+            get => (string)GetValue(WalletProperty);
+            set => SetValue(WalletProperty, value);
+        }
+
+        public Bill Bill { get; }
+
+        public UIBill(Bill bill)
+        {
+            Bill = bill;
+        }
+    }
 }

Billing.Shared/Views/IconSelectPage.xaml.cs

@@ -38,7 +38,9 @@ namespace Billing.Views
             var source = new List<BillingIcon>
             {
                 new() { Icon = BaseModel.ICON_DEFAULT },
-                new() { Icon = "wallet" }
+                new() { Icon = "wallet" },
+                new() { Icon = "creditcard" },
+                new() { Icon = "debitcard" }
             };
             source.AddRange(IconConverter.IconPreset.Select(icon => new BillingIcon { Icon = $"#brand#{icon.Key}" }));
             foreach (var icon in source)

Billing/Billing.iOS/Renderers/LongPressButtonRenderer.cs

@@ -35,7 +35,7 @@ namespace Billing.iOS.Renderers
 
         private void OnLongPressed(UILongPressGestureRecognizer e)
         {
-            if (Element is LongPressButton button)
+            if (e.State == UIGestureRecognizerState.Began && Element is LongPressButton button)
             {
                 button.TriggerLongPress();
             }