public SummaryPage(UserData.Rootobject user, object item)
{
InitializeComponent();
Title = "Summary";
UserData.Uservaluta userValuta = (UserData.Uservaluta)item;
lblShortName.Text = userValuta.Valuta.ShortName;
lblTotal.Text = (userValuta.Amount * userValuta.Valuta.CurrentPrice).ToString();
lblAmount.Text = (userValuta.Amount).ToString();
lblPrice.Text = (userValuta.PurchasePrice).ToString();
lblCurrent.Text = (userValuta.Valuta.CurrentPrice).ToString();
double n = userValuta.Amount * userValuta.Valuta.CurrentPrice;
double o = userValuta.Amount * userValuta.PurchasePrice;
double upper = n - o;
double lower = o;
double left = upper / lower;
double end = left * 100;
lblPercentage.Text = $"{(Math.Round(end, 2)).ToString()}%";
if (end < 0)
{
lblPercentage.TextColor = Color.Red;
}
else
{
lblPercentage.TextColor = Color.Green;
}
}
protected async void LoginUser()
{
if (String.IsNullOrWhiteSpace(unEntry.Text) || String.IsNullOrWhiteSpace(pwEntry.Text))
{
lblError.Text = "Password or username is empty.";
lblError.IsVisible = true;
return;
}
UserData.Rootobject loggedinUser = new UserData.Rootobject();
try
{
loggedinUser = await FetchAndCheckUser(unEntry.Text, pwEntry.Text);
}
catch (ArgumentException ex)
{
lblError.Text = ex.Message;
lblError.IsVisible = true;
return;
}
if (Application.Current.Properties.ContainsKey("userId"))
{
Application.Current.Properties.Remove("userId");
}
Application.Current.Properties["userId"] = loggedinUser.Id;
StartPage startpage = new StartPage();
startpage.Title = $"Valutas of {loggedinUser.Username}";
await ReplaceRoot(startpage);
}
public static async Task <UserData.Rootobject> GetSpecficUserAPIAsync(int userId)
{
string api = $"{baseUrl}users/{userId}";
HttpClient httpClient = new HttpClient();
var responseText = await httpClient.GetStringAsync(api);
UserData.Rootobject data = JsonConvert.DeserializeObject <UserData.Rootobject>(responseText);
return(data);
}
private async Task <float> GetSumCrypto()
{
float sum = 0;
UserData.Rootobject user = await Connector.GetSpecficUserAPIAsync((int)Application.Current.Properties["userId"]);
foreach (UserData.Uservaluta userValuta in user.UserValutas)
{
sum += (userValuta.Amount * userValuta.Valuta.CurrentPrice);
}
return(sum);
}
private async Task ValutaListView_ItemTapped(object sender, ItemTappedEventArgs e)
{
UserData.Rootobject user = await Connector.GetSpecficUserAPIAsync(userId);
UserData.Uservaluta userValuta = (UserData.Uservaluta)e.Item;
var graphPage = new TabbedPage
{
Children =
{
new SummaryPage(user, e.Item)
,
new ContentPage {
Title = "Candle",
Content = new PlotView
{
Model = CreateCandlePlotModel(user, e.Item),
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.Fill,
}
},
new ContentPage {
Title = "Linear",
Content = new PlotView
{
Model = CreatePlotModel(user, e.Item),
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.Fill,
},
},
new ContentPage {
Title = "Bar",
Content = new PlotView
{
Model = CreateBarPlotModel(user, e.Item),
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.Fill,
}
}
},
Title = $"{userValuta.Valuta.Name}"
};
await Navigation.PushAsync(graphPage);
}
public PlotModel CreatePlotModel(UserData.Rootobject loggedinUser, object userValutaItem)
{
UserData.Uservaluta userValuta = (UserData.Uservaluta)userValutaItem;
UserData.Rootobject userData = loggedinUser;
var plotModel = new PlotModel();
plotModel.Axes.Add(new LinearAxis {
Position = AxisPosition.Left
});
plotModel.Axes.Add(new DateTimeAxis
{
Position = AxisPosition.Bottom,
MinorIntervalType = DateTimeIntervalType.Hours,
IntervalType = DateTimeIntervalType.Hours,
StringFormat = "HH-dd"
});
var linearPlot = new LineSeries
{
MarkerType = MarkerType.Circle,
MarkerSize = 4,
MarkerStroke = OxyColors.White
};
foreach (UserData.Usergraph userGraph in userData.UserGraphs)
{
if (userGraph.Graph.Valuta.Id == userValuta.Valuta.Id)
{
plotModel.Title = userGraph.Graph.Name;
foreach (UserData.Graphdata graphPoint in userGraph.Graph.graphData)
{
double dateTimeX = DateTimeAxis.ToDouble(UnixTimeStampToDateTime(graphPoint.TimeStamp));
linearPlot.Points.Add(new DataPoint(dateTimeX, graphPoint.Open));
}
}
}
plotModel.Series.Add(linearPlot);
return(plotModel);
}
public App()
{
InitializeComponent();
if (Application.Current.Properties.ContainsKey("userId") && (int)Application.Current.Properties["userId"] > 0)
{
UserData.Rootobject loggedinUser = Task.Run(() => Connector.GetSpecficUserAPIAsync((int)Application.Current.Properties["userId"])).Result;
ContentPage page = new CryptoFrontEnd.StartPage();
page.Title = $"Valutas of {loggedinUser.Username}";
MainPage = new NavigationPage(page);
}
else
{
ContentPage page = new CryptoFrontEnd.Login();
page.Title = "Login";
MainPage = new NavigationPage(page);
}
}
private PlotModel CreateBarPlotModel(UserData.Rootobject user, object item)
{
UserData.Uservaluta userValuta = (UserData.Uservaluta)item;
var model = new PlotModel();
List <BarItem> values = new List <BarItem>();
List <DateTime> timeStamps = new List <DateTime>();
foreach (UserData.Usergraph userGraph in user.UserGraphs)
{
if (userGraph.Graph.Valuta.Id == userValuta.Valuta.Id)
{
model.Title = userGraph.Graph.Name;
foreach (UserData.Graphdata dataPoint in userGraph.Graph.graphData)
{
values.Add(new BarItem {
Value = (dataPoint.Open)
});
timeStamps.Add(UnixTimeStampToDateTime(dataPoint.TimeStamp));
}
}
}
model.Axes.Add(new CategoryAxis
{
Position = AxisPosition.Left,
Key = "CurrencyAxis",
ItemsSource = timeStamps
});
var barSeries = new BarSeries
{
ItemsSource = values,
LabelPlacement = LabelPlacement.Outside,
};
model.Series.Add(barSeries);
return(model);
}
private PlotModel CreateCandlePlotModel(UserData.Rootobject user, object item)
{
var model = new PlotModel();
var s1 = new CandleStickSeries()
{
Color = OxyColors.Black,
};
UserData.Uservaluta userValuta = (UserData.Uservaluta)item;
foreach (UserData.Usergraph userGraph in user.UserGraphs)
{
if (userGraph.Graph.Valuta.Id == userValuta.Valuta.Id)
{
model.Title = userGraph.Graph.Name;
foreach (UserData.Graphdata graphPoint in userGraph.Graph.graphData)
{
s1.Items.Add(new HighLowItem(DateTimeAxis.ToDouble(UnixTimeStampToDateTime(graphPoint.TimeStamp)), graphPoint.High, graphPoint.Low, graphPoint.Open, graphPoint.Close));
}
}
}
model.Series.Add(s1);
model.Axes.Add(new LinearAxis()
{
MaximumPadding = 0.3, MinimumPadding = 0.3
});
model.Axes.Add(new DateTimeAxis
{
Position = AxisPosition.Bottom,
MinorIntervalType = DateTimeIntervalType.Hours,
IntervalType = DateTimeIntervalType.Hours,
StringFormat = "HH-dd"
});
return(model);
}
