/// <summary>
/// Executes the "Calc" command, which is the main command of the app.
/// It converts ValueCurrency to DisplayCurrencies and prints the results out.
/// </summary>
/// <param name="message">the message a user sent</param>
/// <param name="client">Bot instance, needed to answer on the message</param>
/// <param name="repo">Repository for the whole db, allows this command handler to save/read data</param>
/// <returns>Task to be awaited</returns>
public override async Task Execute(Message message)
{
var messageText = message?.Text;
if (messageText == null)
{
return;
}
var content = messageText
.TrimStart(charsToIgnore) // "/calc" <- remove that if exists
.Replace(',', '.'); // can process both , and . in the number
if (!decimal.TryParse(content, out var value))
{
throw new Exception("Problems occured when parsing your message");
}
var messageId = message.MessageId;
var chatId = message.Chat.Id;
var dataTask = CurrenciesDataCaching.GetValCursAsync();
await Repo.EnsureChatCreatedAsync(chatId); // ensure chat is created, so that it is not added multiple times (in multiple threads)
// execute them all in parallel and wait for the completion
var percentsTask = Repo.GetPercentsAsync(chatId);
var valueCurrencyTask = Repo.GetCurrencyEmojiAsync(chatId);
var displayCurrenciesTask = Repo.GetDisplayCurrenciesEmojisAsync(chatId);
await Task.WhenAll(dataTask, percentsTask, valueCurrencyTask, displayCurrenciesTask);
var values =
await ValuesCalculator.GetCurrenciesValuesAsync(
value,
valueCurrencyTask.Result,
dataTask.Result,
displayCurrenciesTask.Result);
var textToSend = await AnswerBuilder.BuildStringFromValuesAsync(
values, valueCurrencyTask.Result, percentsTask.Result);
await Client.SendTextMessageAsync(chatId, textToSend, replyToMessageId : messageId);
}
public async Task HandleAsync(InlineQuery q)
{
if (IsNullOrEmpty(q.Query))
{
return;
}
var input = q.Query;
var dataTask = GetValCursAsync();
var currenciesEmojisTask = repo.GetCurrencyEmojisAsync();
var data = dataTask.Result;
var currenciesEmojis = currenciesEmojisTask.Result;
string currency = null;
foreach (var i in currenciesEmojis)
{
if (input.Contains(i.Currency))
{
currency = i.Currency;
break;
}
}
var space = " "; // format: {decimal}{space}{currency} e.g "53.2 UAH" or just {decimal}
var argsPart = currency == null ? "" : $"{space}{currency}";
var pattern = $@"[0-9][0-9]*([\.,][0-9][0-9]*)?{argsPart}";
if (!Regex.IsMatch(input, pattern))
{
var text = "format: {decimal}{space}{currency} e.g \"53.2 UAH\" or just {decimal} e.g \"53.2\"";
await bot.AnswerInlineQueryAsync(
q.Id,
await InlineAnswerBuilder.ArticleToQueryResultAsync(
"Result", text, text)
);
return;
}
var valueToParse = IsNullOrEmpty(argsPart) ? input : input.Replace(argsPart, "");
var isValid = decimal.TryParse(valueToParse, out var value);
if (isValid)
{
if (currency == null)
{
currency = DefaultValues.DefaultValueCurrency;
}
var currencyEmoji = currenciesEmojis.First(ce => ce.Currency == currency);
var values =
await ValuesCalculator.GetCurrenciesValuesAsync(value, currencyEmoji, data, currenciesEmojis);
var answer1 = await AnswerBuilder.BuildStringFromValuesAsync(values, currencyEmoji);
await bot.AnswerInlineQueryAsync(
q.Id,
await InlineAnswerBuilder.ArticleToQueryResultAsync(
"Result", answer1, answer1)
);
}
}