private BarChart GenerateBarChart(BudgetLimitGraphModel data)
{
// check if enough data for bar chart
if (!data.Values.Any())
{
return null;
}
var barChart = new BarChart
{
ComplexData =
{
Labels = data.Values.Select(graphData => graphData.Label).ToList(),
Datasets =
new List<ComplexDataset>
{
this.GenerateComplexData(data.Values.Select(t => t.BudgetLimit).ToList(),
ColorGeneratorConstants.Grey),
this.GenerateComplexData(data.Values.Select(t => t.ComputedTransaction).ToList(),
ColorGeneratorConstants.Red)
}
}
};
// graph settings for dynamic charts
barChart.ChartConfiguration.ScaleBeginAtZero = false;
barChart.ChartConfiguration.Responsive = true;
return barChart;
}
private async Task<BarChart> CreateChartForBudgetLimits(Guid userId, Currency currency)
{
var budgets = await this.GetAccessibleBudgets(userId);
var transactionFromBudgets = await this.GetTransactionFromBudgets(budgets);
var graphModels = new List<BudgetWithLimitGraphModel>();
var complexGraphModel = new BudgetLimitGraphModel
{
Values = graphModels,
Label = DashBoardResource.BudgetTabDescription
};
graphModels.AddRange(from budget in budgets
let budgetTransactions =
transactionFromBudgets.ContainsKey(budget.Guid.ToString())
? transactionFromBudgets[budget.Guid.ToString()]
: Enumerable.Empty<Transaction>()
let sumInUserCurrency =
budgetTransactions.Select(
transaction => Transformation.ChangeCurrencyForNewTransaction(transaction, currency))
.Sum(transaction => transaction.Amount)
select new BudgetWithLimitGraphModel
{
Label = budget.Name,
BudgetLimit = budget.Limit,
ComputedTransaction = sumInUserCurrency*-1
});
return this.GenerateBarChart(complexGraphModel);
}
