public List <StarSystem> GetOrFetchStarSystems(string[] names, bool fetchIfMissing = true, bool refreshIfOutdated = true)
{
if (!names.Any())
{
return(new List <StarSystem>());
}
List <StarSystem> systems = GetStarSystems(names, refreshIfOutdated) ?? new List <StarSystem>();
// If a system isn't found after we've read our local database, we need to fetch it.
List <string> fetchSystems = new List <string>();
foreach (string name in names)
{
if (fetchIfMissing && systems.FirstOrDefault(s => s.systemname == name) == null)
{
fetchSystems.Add(name);
}
}
List <StarSystem> fetchedSystems = dataProviderService.GetSystemsData(fetchSystems.ToArray());
if (fetchedSystems?.Count > 0)
{
Instance.SaveStarSystems(fetchedSystems);
systems.AddRange(fetchedSystems);
}
return(systems);
}
public List <StarSystem> GetOrFetchStarSystems(string[] names, bool fetchIfMissing = true)
{
if (names.Count() == 0)
{
return(null);
}
List <StarSystem> systems = Instance.GetStarSystems(names, fetchIfMissing);
List <string> fetchSystems = new List <string>();
// If a system isn't found after we've read our local database, we need to fetch it.
foreach (string name in names)
{
if (fetchIfMissing && systems.FirstOrDefault(s => s.name == name) == null)
{
fetchSystems.Add(name);
}
}
List <StarSystem> fetchedSystems = DataProviderService.GetSystemsData(fetchSystems.ToArray());
if (fetchedSystems?.Count > 0)
{
Instance.insertStarSystems(fetchedSystems);
systems.AddRange(fetchedSystems);
}
return(systems);
}
public List <StarSystem> GetOrCreateStarSystems(string[] names, bool fetchIfMissing = true, bool refreshIfOutdated = true)
{
if (names.Count() == 0)
{
return(null);
}
// Get (and update if required) systems already in our database
List <StarSystem> systems = Instance.GetStarSystems(names, refreshIfOutdated);
// If a system isn't found after we've read our local database, we need to fetch it.
List <string> fetchSystems = new List <string>();
foreach (string name in names)
{
if (fetchIfMissing && systems.FirstOrDefault(s => s.name == name) == null)
{
fetchSystems.Add(name);
}
}
List <StarSystem> fetchedSystems = DataProviderService.GetSystemsData(fetchSystems.ToArray());
if (fetchedSystems?.Count > 0)
{
Instance.insertStarSystems(fetchedSystems);
systems.AddRange(fetchedSystems);
}
// Create a new system object for each name that isn't in the database and couldn't be fetched from a server
foreach (string name in names)
{
if (systems?.Find(s => s?.name == name) == null)
{
systems.Add(new StarSystem()
{
name = name
});
}
}
return(systems);
}
public List <StarSystem> GetStarSystems(string[] names, bool refreshIfOutdated = true)
{
if (!File.Exists(DbFile))
{
return(null);
}
if (names.Count() == 0)
{
return(null);
}
List <StarSystem> results = new List <StarSystem>();
List <string> systemsToUpdate = new List <string>();
List <KeyValuePair <string, string> > dataSets = Instance.ReadStarSystems(names);
foreach (KeyValuePair <string, string> kv in dataSets)
{
bool needToUpdate = false;
StarSystem result = null;
if (kv.Value != null && kv.Value != "")
{
string name = kv.Key;
// Old versions of the data could have a string "No volcanism" for volcanism. If so we remove it
string data = kv.Value?.Replace(@"""No volcanism""", "null");
// Determine whether our data is stale (We won't deserialize the the entire system if it's stale)
IDictionary <string, object> system = Deserializtion.DeserializeData(data);
system.TryGetValue("comment", out object commentVal);
system.TryGetValue("lastupdated", out object lastUpdatedVal);
system.TryGetValue("systemAddress", out object systemAddressVal);
system.TryGetValue("EDSMID", out object edsmIdVal);
string comment = (string)commentVal ?? "";
DateTime?lastupdated = (DateTime?)lastUpdatedVal;
long? systemAddress = (long?)systemAddressVal;
long? edsmId = (long?)edsmIdVal;
if (refreshIfOutdated)
{
if (lastupdated < DateTime.UtcNow.AddHours(-1))
{
// Data is stale
needToUpdate = true;
}
else if (lastupdated is null)
{
// We have no record of ever updating this star system
needToUpdate = true;
}
else if (SCHEMA_VERSION >= 2 && (systemAddress is null || edsmId is null))
{
// Obtain data for optimized data searches starting with schema version 2
needToUpdate = true;
}
}
if (needToUpdate)
{
// We want to update this star system
systemsToUpdate.Add(name);
}
else
{
// Deserialize the old result
result = DeserializeStarSystem(name, data, ref needToUpdate);
if (result != null)
{
results.Add(result);
}
}
}
}
if (systemsToUpdate.Count > 0)
{
List <StarSystem> updatedSystems = DataProviderService.GetSystemsData(systemsToUpdate.ToArray());
// If the newly fetched star system is an empty object except (for the object name), reject it
List <string> systemsToRevert = new List <string>();
foreach (StarSystem starSystem in updatedSystems)
{
if (starSystem.systemAddress == null)
{
systemsToRevert.Add(starSystem.systemname);
}
}
updatedSystems.RemoveAll(s => systemsToRevert.Contains(s.systemname));
// Return old results when new results have been rejected
foreach (string systemName in systemsToRevert)
{
results.Add(GetStarSystem(systemName, false));
}
// Synchronize EDSM visits and comments
updatedSystems = DataProviderService.syncFromStarMapService(updatedSystems);
// Add our updated systems to our results
results.AddRange(updatedSystems);
// Save changes to our star systems
Instance.updateStarSystems(updatedSystems);
}
foreach (StarSystem starSystem in results)
{
starSystem.lastupdated = DateTime.UtcNow;
}
return(results);
}