private bool compareStats(TransactionCategoryStats stats, decimal min, decimal max, decimal average)
{
return(stats != null &&
stats.MinAmount == min &&
stats.MaxAmount == max &&
stats.AverageAmount == average);
}
public async Task <ActionResult <Dictionary <string, TransactionCategoryStats> > > GetStats()
{
var result = new Dictionary <string, TransactionCategoryStats>();
var transactions = await transactionRepository.GetAsync();
var flattenedTransactions = transactions.SelectMany(kv => kv.Value);
var transactionsByCategory = flattenedTransactions.GroupBy(t => t.TransactionCategory);
foreach (var category in transactionsByCategory)
{
var stats = new TransactionCategoryStats();
stats.MinAmount = category.Min(t => t.Amount);
stats.MaxAmount = category.Max(t => t.Amount);
stats.AverageAmount = category.Average(t => t.Amount);
result.Add(category.Key, stats);
}
return(result);
}
