public static void Act(RequestedAction action, RatesHistory context)
{
if (action.Type == RequestedAction.RAType.FETCH)
{
var dates = action.Dates().ToList();
var threads = new List <Thread>(dates.Count);
foreach (var date in dates)
{
if (GetRatesRecordFromHistory(context, date) == null)
{
var thread = new Thread(delegate() {
Console.WriteLine("Fetching data for {0}", date);
var resp = Fetch(date);
context.RatesRecords.Add(RatesRecord.FromRates(date, resp.Rates));
});
threads.Add(thread);
thread.Start();
}
}
foreach (var thread in threads)
{
thread.Join();
}
context.SaveChanges();
}
else if (action.Type == RequestedAction.RAType.SHOW)
{
foreach (var date in action.Dates())
{
var rates = GetRatesRecordFromHistory(context, date);
if (rates == null)
{
Console.WriteLine("{0}: no data", date.ToString("d"));
}
else
{
Console.WriteLine(rates);
}
}
}
else if (action.Type == RequestedAction.RAType.SHOW_ALL)
{
foreach (var rates in context.RatesRecords.OrderBy(rr => rr.Date))
{
Console.WriteLine(rates);
}
}
}
public static ICollection <RequestedAction> ParseArgs(string[] args)
{
int index = 0;
List <RequestedAction> req_actions = new();
try {
while (index < args.Length)
{
if (args[index] == "help")
{
PrintHelp();
return(null);
}
else if (args[index] == "show" && args[index + 1] == "it")
{
if (req_actions.Count() == 0 || req_actions.Last().Type != RequestedAction.RAType.FETCH)
{
throw new ArgumentException(String.Format(
"'it' must reference arguments of previous fetch (in 'show', arg #{0})", index + 2));
}
req_actions.Add(new(RequestedAction.RAType.SHOW, req_actions.Last().Start, req_actions.Last().End));
index += 2;
}
else if (args[index] == "show" && args[index + 1] == "all")
{
req_actions.Add(RequestedAction.ActionShowAll());
index += 2;
}
else if (args[index] == "fetch" || args[index] == "show")
{
DateTime startDate;
DateTime?endDate = null;
// Parse first date arg, which is required
try {
startDate = DateTime.Parse(args[index + 1]);
}
catch (FormatException) {
throw new ArgumentException(String.Format(
"'{0}' is not a valid date (in '{1}', arg #{2})",
args[index + 1], args[index], index + 2));
}
// Parse second date arg, which is optional
if (index + 2 < args.Length)
{
try {
endDate = DateTime.Parse(args[index + 2]);
}
catch (FormatException) { }
}
var req_type = (args[index] == "fetch") ? RequestedAction.RAType.FETCH : RequestedAction.RAType.SHOW;
try {
req_actions.Add(new(req_type, startDate, endDate));
}
catch (ArgumentException e) {
throw new ArgumentException(String.Format("{0} (in '{1}', arg#{2})", e.Message, args[index], index + 1));
}
index += 2 + (endDate != null ? 1 : 0);
}
else
{
throw new ArgumentException(String.Format("unknown action '{0}' (arg #{1})", args[index], index + 1));
}
}
}
catch (IndexOutOfRangeException) {
throw new ArgumentException(String.Format("not enough arguments for action '{0}' (arg #{1})", args[index], index + 1));
}
return(req_actions);
}