/// <summary>
/// Recursively searches for a connection string by name. Allows for linking connection strings to eachother by name
/// </summary>
/// <param name="provider">The provider to use</param>
/// <param name="toTest">The name (or connection string) to return</param>
/// <returns>The furthest resolvable value representing the connection string</returns>
public static string FindConnectionString(this IProvideConfigurations provider, string toTest = "DefaultConnectionString")
{
if (provider is null)
{
throw new ArgumentNullException(nameof(provider));
}
string ConnectionString;
if (provider.GetConnectionString(toTest) != null)
{
ConnectionString = provider.GetConnectionString(toTest);
}
else if (!string.IsNullOrWhiteSpace(provider.GetConfiguration(toTest)))
{
ConnectionString = provider.FindConnectionString(provider.GetConfiguration(toTest));
}
else
{
ConnectionString = toTest;
}
if (ConnectionString is null)
{
throw new Exception("Can not test for null connection string. How did we get here?");
}
if (ConnectionString.StartsWith("name=", StringComparison.OrdinalIgnoreCase))
{
ConnectionString = ConnectionString.Replace("name=", "");
ConnectionString = provider.FindConnectionString(ConnectionString);
}
return(ConnectionString);
}
/// <summary>
/// Checks connection strings first, then configurations
/// </summary>
/// <param name="provider">The IConfigurationProvider</param>
/// <param name="Name">The name of the connection string/configuration</param>
/// <returns>The value, if any is found, or null</returns>
public static string ConnectionStringOrConfiguration(this IProvideConfigurations provider, string Name)
{
if (provider is null)
{
throw new ArgumentNullException(nameof(provider));
}
return(provider.GetConnectionString(Name) ?? provider.GetConfiguration(Name));
}