private static PostgresOptions CreatePostgresOptions(IPostgresOptions options)
{
return(new PostgresOptions((key, value) =>
{
var envFlag = Environment.GetEnvironmentVariable(key.ToUpperInvariant());
return !string.IsNullOrEmpty(envFlag) ? envFlag : PostgresOptions.GetFromIOptions(options, key, value);
}));
}
public static string GetFromIOptions(IPostgresOptions options, string key, string value)
{
var optionValue = key switch
{
HostFlagName => options.PostgresHost,
UserNameFlagName => options.PostgresUserName,
PasswordFlagName => options.PostgresPassword,
DatabaseFlagName => options.PostgresDatabase,
AdditionalFlagName => options.PostgresAdditionalOptions,
_ => throw new InvalidOperationException($"Unknown Postgres flag {key}")
};
return(string.IsNullOrEmpty(optionValue) ? value : optionValue);
}
public PostgresOptions(IPostgresOptions options)
: this((key, value) => GetFromIOptions(options, key, value))
{
}