public static void Init()

in Facebook.Unity/FB.cs [226:340]
110 lines of code
9 McCabe index (conditional complexity)

        public static void Init(
            string appId,
            string clientToken = null,
            bool cookie = true,
            bool logging = true,
            bool status = true,
            bool xfbml = false,
            bool frictionlessRequests = true,
            string authResponse = null,
            string javascriptSDKLocale = FB.DefaultJSSDKLocale,
            HideUnityDelegate onHideUnity = null,
            InitDelegate onInitComplete = null)
        {
            if (string.IsNullOrEmpty(appId))
            {
                throw new ArgumentException("appId cannot be null or empty!");
            }

            FB.AppId = appId;
            FB.ClientToken = clientToken;

            if (!isInitCalled)
            {
                isInitCalled = true;

                if (Constants.IsEditor)
                {
                    if (Application.platform == RuntimePlatform.WindowsEditor)
                    {
                        FacebookLogger.Warn("You are running Facebook Windows SDK on a Windows device.");
                        FB.OnDLLLoadedDelegate = delegate
                        {
                            ((WindowsFacebook)FB.facebook).Init(appId, clientToken, onHideUnity, onInitComplete);
                        };
                        ComponentFactory.GetComponent<WindowsFacebookLoader>();

                    }
                    else
                    {
                        FB.OnDLLLoadedDelegate = delegate
                        {
                            ((EditorFacebook)FB.facebook).Init(onInitComplete);
                        };

                        ComponentFactory.GetComponent<EditorFacebookLoader>();
                        ComponentFactory.GetComponent<CodelessCrawler>();
                        ComponentFactory.GetComponent<CodelessUIInteractEvent>();
                    }
                }
                else
                {
                    switch (Constants.CurrentPlatform)
                    {
                        case FacebookUnityPlatform.WebGL:
                            FB.OnDLLLoadedDelegate = delegate
                            {
                                ((CanvasFacebook)FB.facebook).Init(
                                    appId,
                                    cookie,
                                    logging,
                                    status,
                                    xfbml,
                                    FacebookSettings.ChannelUrl,
                                    authResponse,
                                    frictionlessRequests,
                                    javascriptSDKLocale,
                                    Constants.DebugMode,
                                    onHideUnity,
                                    onInitComplete);
                            };
                            ComponentFactory.GetComponent<CanvasFacebookLoader>();
                            break;
                        case FacebookUnityPlatform.IOS:
                            FB.OnDLLLoadedDelegate = delegate
                            {
                                ((IOSFacebook)FB.facebook).Init(
                                    appId,
                                    frictionlessRequests,
                                    FacebookSettings.IosURLSuffix,
                                    onHideUnity,
                                    onInitComplete);
                            };
                            ComponentFactory.GetComponent<IOSFacebookLoader>();
                            ComponentFactory.GetComponent<CodelessCrawler>();
                            ComponentFactory.GetComponent<CodelessUIInteractEvent>();
                            break;
                        case FacebookUnityPlatform.Android:
                            FB.OnDLLLoadedDelegate = delegate
                            {
                                ((AndroidFacebook)FB.facebook).Init(
                                    appId,
                                    onHideUnity,
                                    onInitComplete);
                            };
                            ComponentFactory.GetComponent<AndroidFacebookLoader>();
                            ComponentFactory.GetComponent<CodelessCrawler>();
                            ComponentFactory.GetComponent<CodelessUIInteractEvent>();
                            break;
                        case FacebookUnityPlatform.Windows:
                            FB.OnDLLLoadedDelegate = delegate
                            {
                                ((WindowsFacebook)FB.facebook).Init(appId, clientToken, onHideUnity, onInitComplete);
                            };
                            ComponentFactory.GetComponent<WindowsFacebookLoader>();
                            break;
                        default:
                            throw new NotSupportedException("The facebook sdk does not support this platform");
                    }
                }
            }
            else
            {
                FacebookLogger.Warn("FB.Init() has already been called.  You only need to call this once and only once.");
            }
        }