Add ability to blacklist onboarding steps

packages/website/ts/components/onboarding/onboarding_flow.tsx

@@ -6,9 +6,11 @@ import { zIndex } from 'ts/utils/style';
 
 export interface OnboardingFlowProps {
     steps: Step[];
+    blacklistedStepIndices: number[];
     stepIndex: number;
     isRunning: boolean;
     onClose: () => void;
+    setOnboardingStep: (stepIndex: number) => void;
 }
 
 const joyrideStyleOptions: StyleOptions = {
@@ -17,16 +19,17 @@ const joyrideStyleOptions: StyleOptions = {
 
 // Wrapper around Joyride with defaults and styles set
 export class OnboardingFlow extends React.Component<OnboardingFlowProps> {
-    private _joyrideRef: React.RefObject<Joyride>;
-    constructor(props: OnboardingFlowProps) {
-        super(props);
-        this._joyrideRef = React.createRef();
+    public componentDidMount(): void {
+        this._setOnboardingStepBasedOnBlacklist(this.props.stepIndex);
+    }
+
+    public componentWillReceiveProps(nextProps: OnboardingFlowProps): void {
+        this._setOnboardingStepBasedOnBlacklist(nextProps.stepIndex);
     }
 
     public render(): React.ReactNode {
         return (
             <Joyride
-                ref={this._joyrideRef}
                 run={this.props.isRunning}
                 debug={true}
                 steps={this.props.steps}
@@ -37,6 +40,49 @@ export class OnboardingFlow extends React.Component<OnboardingFlowProps> {
         );
     }
 
+    private _setOnboardingStepBasedOnBlacklist(nextIndex: number): void {
+        const blacklistedSteps = this.props.blacklistedStepIndices;
+        const newStepIndex = this._adjustedStepBasedOnBlacklist(
+            this.props.stepIndex,
+            nextIndex,
+            this.props.steps.length,
+            blacklistedSteps,
+        );
+        this.props.setOnboardingStep(newStepIndex);
+    }
+
+    private _adjustedStepBasedOnBlacklist(
+        currentStep: number,
+        nextStep: number,
+        totalSteps: number,
+        blacklistedSteps: number[],
+    ): number {
+        if (!blacklistedSteps.includes(nextStep)) {
+            return nextStep;
+        }
+        let newStep = nextStep;
+        const op = nextStep >= currentStep ? _.add : _.subtract;
+        let didSearch = false;
+        while (blacklistedSteps.includes(newStep)) {
+            newStep = op(newStep, 1);
+            if (newStep < 0) {
+                if (didSearch) {
+                    break;
+                }
+                newStep = totalSteps - 1;
+                didSearch = true;
+            }
+            if (newStep >= totalSteps) {
+                if (didSearch) {
+                    break;
+                }
+                newStep = 0;
+                didSearch = true;
+            }
+        }
+        return newStep;
+    }
+
     private _handleChange(data: CallbackData): void {
         switch (data.action) {
             case 'close':