refactor(client): In getFeatureVariables, use OptimizelyConfig instead of internal ProjectConfig (#75)

Summary:

getFeatureVariables reaches inside the optimizely-sdk client to access its project config manager, to find what variables are associated with a given feature key. In recent versions of optimizely-sdk, it is no longer necessary to access project config manager to get this information. Features and variables are available via the public, documented OptimizelyConfig interface. This PR updates getFeatureVariables to use OptimizelyConfig.

Test Plan:

Updated unit tests
Manual testing

Author: mjc1283

src/client.spec.ts

@@ -460,58 +460,69 @@ describe('ReactSDKClient', () => {
 
     describe('getFeatureVariables', () => {
       it('returns an empty object when the inner SDK returns no variables', () => {
-        const anyClient = mockInnerClient as any;
-        anyClient.getFeatureVariableBoolean.mockReturnValue(null);
-        anyClient.getFeatureVariableString.mockReturnValue(null);
-        anyClient.getFeatureVariableInteger.mockReturnValue(null);
-        anyClient.getFeatureVariableDouble.mockReturnValue(null);
-        anyClient.getFeatureVariableJSON.mockReturnValue(null);
+        (mockInnerClient.getFeatureVariable as jest.Mock).mockReturnValue(null);
         const instance = createInstance(config);
         const result = instance.getFeatureVariables('feat1');
         expect(result).toEqual({});
       });
 
       it('returns an object with variables of all types returned from the inner sdk ', () => {
-        const anyClient = mockInnerClient as any;
-        anyClient.projectConfigManager = {
-          getConfig() {
-            return {
-              featureKeyMap: {
-                feat1: {
-                  variables: [
-                    {
-                      type: 'boolean',
-                      key: 'bvar',
-                    },
-                    {
-                      type: 'string',
-                      key: 'svar',
-                    },
-                    {
-                      type: 'integer',
-                      key: 'ivar',
-                    },
-                    {
-                      type: 'double',
-                      key: 'dvar',
-                    },
-                    {
-                      type: 'json',
-                      key: 'jvar',
-                    },
-                  ],
+        (mockInnerClient.getOptimizelyConfig as jest.Mock).mockReturnValue({
+          featuresMap: {
+            feat1: {
+              variablesMap: {
+                bvar: {
+                  id: '0',
+                  key: 'bvar',
+                  type: 'boolean',
+                  value: 'false',
+                },
+                svar: {
+                  id: '1',
+                  key: 'svar',
+                  type: 'string',
+                  value: '',
+                },
+                ivar: {
+                  id: '2',
+                  key: 'ivar',
+                  type: 'integer',
+                  value: '0',
+                },
+                dvar: {
+                  id: '3',
+                  key: 'dvar',
+                  type: 'double',
+                  value: '0',
+                },
+                jvar: {
+                  id: '4',
+                  key: 'jvar',
+                  type: 'json',
+                  value: '{}',
                 },
               },
-            };
+            },
           },
-        };
-        anyClient.getFeatureVariableBoolean.mockReturnValue(true);
-        anyClient.getFeatureVariableString.mockReturnValue('whatsup');
-        anyClient.getFeatureVariableInteger.mockReturnValue(10);
-        anyClient.getFeatureVariableDouble.mockReturnValue(-10.5);
-        anyClient.getFeatureVariableJSON.mockReturnValue({
-          value: 'json value',
         });
+        (mockInnerClient.getFeatureVariable as jest.Mock).mockImplementation(
+          (featureKey: string, variableKey: string) => {
+            switch (variableKey) {
+              case 'bvar':
+                return true;
+              case 'svar':
+                return 'whatsup';
+              case 'ivar':
+                return 10;
+              case 'dvar':
+                return -10.5;
+              case 'jvar':
+                return { value: 'json value' };
+              default:
+                return null;
+            }
+          }
+        );
         const instance = createInstance(config);
         instance.setUser({
           id: 'user1123',

src/client.ts

@@ -360,40 +360,17 @@ class OptimizelyReactSDKClient implements ReactSDKClient {
     }
     const userAttributes = user.attributes;
     const variableObj: { [key: string]: any } = {};
-    const config = (this._client as any).projectConfigManager.getConfig();
-    if (!config) {
+    const optlyConfig = this._client.getOptimizelyConfig();
+    if (!optlyConfig) {
       return {};
     }
-    const feature = config.featureKeyMap[featureKey];
+    const feature = optlyConfig.featuresMap[featureKey];
     if (!feature) {
       return {};
     }
-    const variables: object[] = feature.variables;
-    variables.forEach((variableDef: any) => {
-      const type: any = variableDef.type;
-      const key: any = variableDef.key;
-
-      switch (type) {
-        case 'string':
-          variableObj[key] = this._client.getFeatureVariableString(featureKey, key, userId, userAttributes);
-          break;
-
-        case 'boolean':
-          variableObj[key] = this._client.getFeatureVariableBoolean(featureKey, key, userId, userAttributes);
-          break;
-
-        case 'integer':
-          variableObj[key] = this._client.getFeatureVariableInteger(featureKey, key, userId, userAttributes);
-          break;
-
-        case 'double':
-          variableObj[key] = this._client.getFeatureVariableDouble(featureKey, key, userId, userAttributes);
-          break;
-
-        case 'json':
-          variableObj[key] = this._client.getFeatureVariableJSON(featureKey, key, userId, userAttributes);
-          break;
-      }
+    Object.keys(feature.variablesMap).forEach(key => {
+      const variable = feature.variablesMap[key];
+      variableObj[variable.key] = this._client.getFeatureVariable(featureKey, variable.key, userId, userAttributes);
     });
 
     return variableObj;