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using System.Collections;
using System.Diagnostics.CodeAnalysis;
using ArcaneLibs.Extensions;
namespace LibMatrix.HomeserverEmulator.Services;
public class HSEConfiguration {
private static ILogger<HSEConfiguration> _logger;
public static HSEConfiguration Current { get; set; }
[RequiresUnreferencedCode("Uses reflection binding")]
public HSEConfiguration(ILogger<HSEConfiguration> logger, IConfiguration config, HostBuilderContext host) {
Current = this;
_logger = logger;
logger.LogInformation("Loading configuration for environment: {}...", host.HostingEnvironment.EnvironmentName);
config.GetSection("HomeserverEmulator").Bind(this);
if (StoreData) {
DataStoragePath = ExpandPath(DataStoragePath ?? throw new NullReferenceException("DataStoragePath is not set"));
CacheStoragePath = ExpandPath(CacheStoragePath ?? throw new NullReferenceException("CacheStoragePath is not set"));
}
_logger.LogInformation("Configuration loaded: {}", this.ToJson());
}
public string CacheStoragePath { get; set; }
public string DataStoragePath { get; set; }
public bool StoreData { get; set; } = true;
public bool UnknownSyncTokenIsInitialSync { get; set; } = true;
private static string ExpandPath(string path, bool retry = true) {
_logger.LogInformation("Expanding path `{}`", path);
if (path.StartsWith('~')) {
path = Path.Join(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), path[1..]);
}
Environment.GetEnvironmentVariables().Cast<DictionaryEntry>().OrderByDescending(x => x.Key.ToString()!.Length).ToList().ForEach(x => {
path = path.Replace($"${x.Key}", x.Value.ToString());
});
_logger.LogInformation("Expanded path to `{}`", path);
var tries = 0;
while (retry && path.ContainsAnyOf("~$".Split())) {
if (tries++ > 100)
throw new Exception($"Path `{path}` contains unrecognised environment variables");
path = ExpandPath(path, false);
}
if(path.StartsWith("./"))
path = Path.Join(Directory.GetCurrentDirectory(), path[2..].Replace("/", Path.DirectorySeparatorChar.ToString()));
return path;
}
}
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