restrict compliance policy avaialability to dataset platforms with supported list of purge policies

wherehows-web/app/components/dataset-compliance.ts

@@ -6,6 +6,9 @@ import { inject } from '@ember/service';
 import { classify } from '@ember/string';
 import { IFieldIdentifierOption } from 'wherehows-web/constants/dataset-compliance';
 import { Classification } from 'wherehows-web/constants/datasets/compliance';
+import { IDatasetView } from 'wherehows-web/typings/api/datasets/dataset';
+import { IDataPlatform } from 'wherehows-web/typings/api/list/platforms';
+import { readPlatforms } from 'wherehows-web/utils/api/list/platforms';
 
 import isTrackingHeaderField from 'wherehows-web/utils/validators/tracking-headers';
 import {
@@ -23,7 +26,8 @@ import {
   IComplianceField,
   DatasetClassification,
   SuggestionIntent,
-  PurgePolicy
+  PurgePolicy,
+  getSupportedPurgePolicies
 } from 'wherehows-web/constants';
 import {
   isPolicyExpectedShape,
@@ -44,7 +48,7 @@ import {
   IComplianceSuggestion
 } from 'wherehows-web/typings/api/datasets/compliance';
 import { ApiStatus } from 'wherehows-web/utils/api';
-import { task } from 'ember-concurrency';
+import { task, TaskInstance } from 'ember-concurrency';
 
 /**
  * Describes the DatasetCompliance actions index signature to allow
@@ -140,11 +144,24 @@ const changeSetFieldsRequiringReview = arrayFilter<IComplianceChangeSet>(fieldCh
 const initialStepIndex = -1;
 
 /**
- * Applies the observer to the editStepIndex to trigger the update edit step task
+ * Defines observers for the DatasetCompliance Component
+ * @type {Component}
  */
 const ObservableDecorator = Component.extend({
+  /**
+   * Observes changes editStepIndex to trigger the update edit step task
+   * @type {() => void}
+   */
   editStepIndexChanged: observer('editStepIndex', function(this: DatasetCompliance) {
     get(this, 'updateEditStepTask').perform();
+  }),
+
+  /**
+   * Observes changes to the platform property and invokes the task to update the supportedPurgePolicies prop
+   * @type {() => void}
+   */
+  platformChanged: observer('platform', function(this: DatasetCompliance) {
+    get(this, 'complianceAvailabilityTask').perform();
   })
 });
 
@@ -161,6 +178,8 @@ export default class DatasetCompliance extends ObservableDecorator {
   _hasBadData: boolean;
   _message: string;
   _alertType: string;
+  platform: IDatasetView['platform'];
+  isCompliancePolicyAvailable: boolean = false;
   showAllDatasetMemberData: boolean;
   complianceInfo: void | IComplianceInfo;
   complianceSuggestion: IComplianceSuggestion;
@@ -234,6 +253,13 @@ export default class DatasetCompliance extends ObservableDecorator {
    */
   isSaving = false;
 
+  /**
+   * The list of supported purge policies for the related platform
+   * @type {Array<PurgePolicy>}
+   * @memberof DatasetCompliance
+   */
+  supportedPurgePolicies: Array<PurgePolicy> = [];
+
   constructor() {
     super(...arguments);
 
@@ -353,6 +379,10 @@ export default class DatasetCompliance extends ObservableDecorator {
     }
   }
 
+  didInsertElement() {
+    get(this, 'complianceAvailabilityTask').perform();
+  }
+
   /**
    * @override
    */
@@ -363,6 +393,33 @@ export default class DatasetCompliance extends ObservableDecorator {
     this.enableDomCloaking();
   }
 
+  /**
+   * Parent task to determine if a compliance policy can be created or updated for the dataset
+   * @type {Task<TaskInstance<Promise<Array<IDataPlatform>>>, () => TaskInstance<TaskInstance<Promise<Array<IDataPlatform>>>>>}
+   * @memberof DatasetCompliance
+   */
+  complianceAvailabilityTask = task(function*(
+    this: DatasetCompliance
+  ): IterableIterator<TaskInstance<Promise<Array<IDataPlatform>>>> {
+    yield get(this, 'getPlatformPoliciesTask').perform();
+
+    const supportedPurgePolicies = get(this, 'supportedPurgePolicies');
+    set(this, 'isCompliancePolicyAvailable', !!supportedPurgePolicies.length);
+  }).restartable();
+
+  /**
+   * Task to retrieve platform policies and set supported policies for the current platform
+   * @type {Task<Promise<Array<IDataPlatform>>, () => TaskInstance<Promise<Array<IDataPlatform>>>>}
+   * @memberof DatasetCompliance
+   */
+  getPlatformPoliciesTask = task(function*(this: DatasetCompliance): IterableIterator<Promise<Array<IDataPlatform>>> {
+    const platform = get(this, 'platform');
+
+    if (platform) {
+      set(this, 'supportedPurgePolicies', getSupportedPurgePolicies(platform, yield readPlatforms()));
+    }
+  }).restartable();
+
   /**
    * A `lite` / intermediary step to occlusion culling, this helps to improve the rendering of
    * elements that are currently rendered in the viewport by hiding that aren't.
@@ -372,13 +429,14 @@ export default class DatasetCompliance extends ObservableDecorator {
    */
   enableDomCloaking() {
     const dom = this.element.querySelector('.dataset-compliance-fields');
-    const triggerCount = 100;
+    const triggerThreshold = 100;
+
     if (dom) {
       const rows = dom.querySelectorAll('tbody tr');
 
       // if we already have watchers for elements, or if the elements previously cached are no longer valid,
       // e.g. those elements were destroyed when new data was received, pagination etc
-      if (rows.length > triggerCount && (!this.complianceWatchers || !this.complianceWatchers.has(rows[0]))) {
+      if (rows.length > triggerThreshold && (!this.complianceWatchers || !this.complianceWatchers.has(rows[0]))) {
         /**
          * If an item is not in the viewport add a class to occlude it
          */
@@ -1067,7 +1125,7 @@ export default class DatasetCompliance extends ObservableDecorator {
         });
 
         // defaults the containing personal data flag to false if undefined
-        if (typeof containingPersonalData !== 'undefined') {
+        if (typeof containingPersonalData === 'undefined') {
           set(complianceInfo, 'containingPersonalData', false);
         }
 

wherehows-web/app/components/purge-policy.ts

@@ -1,20 +1,17 @@
 import Component from '@ember/component';
-import { get, set, observer } from '@ember/object';
+import { get, set } from '@ember/object';
 import { run, next } from '@ember/runloop';
-import { task } from 'ember-concurrency';
+import DatasetCompliance from 'wherehows-web/components/dataset-compliance';
 import {
   baseCommentEditorOptions,
   DatasetPlatform,
   exemptPolicy,
-  getSupportedPurgePolicies,
   isExempt,
   missingPolicyText,
   PurgePolicy,
   purgePolicyProps
 } from 'wherehows-web/constants';
 import { IComplianceInfo } from 'wherehows-web/typings/api/datasets/compliance';
-import { IDataPlatform } from 'wherehows-web/typings/api/list/platforms';
-import { readPlatforms } from 'wherehows-web/utils/api/list/platforms';
 
 export default class PurgePolicyComponent extends Component {
   /**
@@ -40,7 +37,7 @@ export default class PurgePolicyComponent extends Component {
    * @type {Array<PurgePolicy>}
    * @memberof PurgePolicyComponent
    */
-  supportedPurgePolicies: Array<PurgePolicy> = [];
+  supportedPurgePolicies: DatasetCompliance['supportedPurgePolicies'];
 
   /**
    * The dataset's  platform
@@ -87,31 +84,6 @@ export default class PurgePolicyComponent extends Component {
     this.checkExemption(get(this, 'purgePolicy'));
   }
 
-  didInsertElement() {
-    get(this, 'getPlatformPolicies').perform();
-  }
-
-  /**
-   * Observes changes to the platform property and invokes the task to update the supportedPurgePolicies prop
-   * @type {void}
-   * @memberof PurgePolicyComponent
-   */
-  platformChanged = observer('platform', function(this: PurgePolicyComponent) {
-    get(this, 'getPlatformPolicies').perform();
-  });
-
-  /**
-   * Task to retrieve platform policies for and set supported policies for the current platform
-   * @memberof PurgePolicyComponent
-   */
-  getPlatformPolicies = task(function*(this: PurgePolicyComponent): IterableIterator<Promise<Array<IDataPlatform>>> {
-    const platform = get(this, 'platform');
-
-    if (platform) {
-      set(this, 'supportedPurgePolicies', getSupportedPurgePolicies(platform, yield readPlatforms()));
-    }
-  }).restartable();
-
   /**
    * Checks that the selected purge policy is exempt, if so, set the
    * flag to request the exemption to true

wherehows-web/app/templates/components/dataset-compliance.hbs

@@ -1,4 +1,9 @@
-<div id="compliance" class="tab-body">
+{{#if complianceAvailabilityTask.isRunning}}
+  {{pendulum-ellipsis-animation}}
+{{else}}
+  {{#if isCompliancePolicyAvailable}}
+
+    <div id="compliance" class="tab-body">
       {{#if _hasBadData}}
         <div class="alert alert-danger post-action-notification" role="alert">
           <p>
@@ -101,13 +106,39 @@
       {{/if}}
 
       {{#if (or isReadOnly (eq editStep.name editSteps.1.name))}}
+        {{#if getPlatformPoliciesTask.isRunning}}
+          {{pendulum-ellipsis-animation}}
+        {{/if}}
+
+        {{#if getPlatformPoliciesTask.last.isError}}
+        {{!--todo: swap out with error-state component--}}
+          {{empty-state
+            heading="Purge Policies not available"
+            subHead="Could not find supported purge policies for this platform"
+          }}
+
+          <div class="purge-policy-list__retry-platforms">
+            <button
+              class="nacho-button nacho-button--large-inverse"
+              onclick={{perform getPlatformPoliciesTask}}>
+              Retry
+            </button>
+          </div>
+
+        {{/if}}
+
+        {{#if getPlatformPoliciesTask.last.isSuccessful}}
+
           {{purge-policy
             isEditable=(not isReadOnly)
             platform=platform
+            supportedPurgePolicies=supportedPurgePolicies
             purgeNote=complianceInfo.compliancePurgeNote
             purgePolicy=(readonly complianceInfo.complianceType)
             onPolicyChange=(action "onDatasetPurgePolicyChange")
           }}
+
+        {{/if}}
       {{/if}}
 
       {{#if schemaless}}
@@ -129,6 +160,16 @@
         {{/if}}
 
       {{/if}}
-</div>
+    </div>
+
+  {{else}}
+
+    {{empty-state
+      heading="Compliance Policy not available"
+      subHead="Compliance Policy is currently not available for this platform"
+    }}
+
+  {{/if}}
+{{/if}}
 
 {{yield}}

wherehows-web/app/templates/components/purge-policy.hbs

@@ -9,29 +9,6 @@
 <ul class="purge-policy-list">
   {{#if isEditable}}
 
-    {{#if getPlatformPolicies.isRunning}}
-      {{pendulum-ellipsis-animation}}
-    {{/if}}
-
-    {{#if getPlatformPolicies.last.isError}}
-    {{!--todo: swap out with error-state component--}}
-      {{empty-state
-        heading="Purge Policies not available"
-        subHead="Could not find supported purge policies for this platform"
-      }}
-
-      <div class="purge-policy-list__retry-platforms">
-        <button
-          class="nacho-button nacho-button--large-inverse"
-          onclick={{perform getPlatformPolicies}}>
-          Retry
-        </button>
-      </div>
-
-    {{/if}}
-
-    {{#if getPlatformPolicies.last.isSuccessful}}
-
     {{#each-in purgePolicyProps as |purgeType prop|}}
       <li
         class="purge-policy-list__item {{unless (contains purgeType supportedPurgePolicies)
@@ -67,8 +44,6 @@
       </li>
     {{/each-in}}
 
-    {{/if}}
-
   {{else}}
 
     {{#if purgePolicy}}