Major 2.0 (#20)

* New 2.0 version + DependencyInjection library

* Updated docs and repo settings (devcontainers, vscode, github, etc.)

* Added tests

* Fixed bugs

* Minor test project refactoring

* Updated projects
- Added symbol packages
- Updated package versions to pre-release

* Updated SECURITY.md

* Added GitHub Actions workflows

libraries/SimpleOTP.DependencyInjection/OtpServiceExtensions.cs

@@ -0,0 +1,96 @@
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace SimpleOTP.DependencyInjection;
+
+/// <summary>
+/// Extension methods for the One-Time Password service.
+/// </summary>
+public static class OtpServiceExtensions
+{
+	/// <summary>
+	/// Adds the One-Time Password service to the service collection.
+	/// </summary>
+	/// <param name="services">The service collection.</param>
+	/// <param name="issuerName">The issuer/application/service name.</param>
+	/// <returns>A reference to this instance after the operation has completed.</returns>
+	public static IServiceCollection AddAuthenticator(this IServiceCollection services, string issuerName) =>
+		AddAuthenticator(services, issuerName);
+
+	/// <summary>
+	/// Adds the One-Time Password service to the service collection.
+	/// </summary>
+	/// <param name="services">The service collection.</param>
+	/// <param name="issuerName">The issuer/application/service name.</param>
+	/// <param name="configure">The configuration for the One-Time Password service.</param>
+	/// <returns>A reference to this instance after the operation has completed.</returns>
+	public static IServiceCollection AddAuthenticator(this IServiceCollection services, string issuerName, Action<OtpOptions>? configure = null)
+	{
+		OtpOptions options = new()
+		{
+			Issuer = issuerName
+		};
+
+		configure?.Invoke(options);
+		services.AddTransient<IOtpService, OtpService>(_ => new OtpService(options));
+		return services;
+	}
+
+	/// <summary>
+	/// Adds the One-Time Password service to the service collection.
+	/// </summary>
+	/// <param name="services">The service collection.</param>
+	/// <param name="configuration">The configuration for the One-Time Password service.</param>
+	/// <returns>A reference to this instance after the operation has completed.</returns>
+	public static IServiceCollection AddAuthenticator(this IServiceCollection services, IConfiguration configuration) =>
+		AddAuthenticator(services, configuration);
+
+	/// <summary>
+	/// Adds the One-Time Password service to the service collection.
+	/// </summary>
+	/// <param name="services">The service collection.</param>
+	/// <param name="configuration">The configuration for the One-Time Password service.</param>
+	/// <param name="configure">The configuration for the One-Time Password service.</param>
+	/// <returns>A reference to this instance after the operation has completed.</returns>
+	public static IServiceCollection AddAuthenticator(this IServiceCollection services, IConfiguration configuration, Action<OtpOptions>? configure = null)
+	{
+		OtpOptions? options = GetOptionsFromConfiguration(configuration);
+
+		if (options is null)
+			return services;
+
+		configure?.Invoke(options);
+		services.AddTransient<IOtpService, OtpService>(_ => new OtpService(options));
+		return services;
+	}
+
+	private static OtpOptions? GetOptionsFromConfiguration(IConfiguration configuration)
+	{
+		OtpServiceConfig config = new();
+		IConfigurationSection configSection = configuration.GetSection("Authenticator");
+
+		if (!configSection.Exists() || string.IsNullOrWhiteSpace(configuration["Authenticator:Issuer"]))
+			return null;
+
+		configSection.Bind(config);
+
+		OtpOptions options = new()
+		{
+			Issuer = config.Issuer,
+			Algorithm = config.Algorithm,
+			Type = config.Type,
+			Digits = config.Digits,
+			Period = config.Period,
+			IssuerDomain = config.IssuerDomain,
+			ToleranceSpan = (config.ToleranceSpan.Behind, config.ToleranceSpan.Ahead),
+			UriFormat = config.UriFormat
+		};
+
+		options.UriFormat |= config.MinimalUri ? OtpUriFormat.Minimal : OtpUriFormat.Full;
+
+		foreach (KeyValuePair<string, string> pair in config.CustomProperties)
+			options.CustomProperties.Add(pair.Key, pair.Value);
+
+		return options;
+	}
+}