public static int Main(string[] args)
{
CultureInfo.CurrentCulture = new CultureInfo("pl-PL", true);
ICollection <RequestedAction> req_actions;
try {
req_actions = ParseArgs(args);
}
catch (ArgumentException e) {
Console.WriteLine(e.Message);
return(1);
}
if (req_actions == null)
{
return(1);
}
else if (req_actions.Count == 0)
{
Console.WriteLine("Nothing to do. See help with 'help' option.");
}
var context = new RatesHistory();
context.Database.EnsureCreated();
foreach (var action in req_actions)
{
// Console.WriteLine(action);
Act(action, context);
}
return(0);
}
public static RatesRecord GetRatesRecordFromHistory(RatesHistory context, DateTime date)
{
try {
return(context.RatesRecords.Where(r => r.Date == date.Date).First());
}
catch (System.InvalidOperationException) {
return(null);
}
}
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);
}
}
}