ui: Don't show the CRD menu for read-only intentions (#11149)

* ui: Don't show the CRD menu for read-only intentions

The UI bug here manifests itself only when a user/token is configured to have read-only access to intentions. Instead of only letting folks click to see a read only page of the intention, we would show an additional message saying that the intention was read-only due to it being 'Managed by [a kubernetes] CRD'. Whilst the intention was still read only, this extra message was still confusing for users.

This PR fixes up the conditional logic and further moves the logic to use ember-can - looking at the history of the files in question, this bug snuck itself in partly due to it being 'permission-y type stuff' previous to using ember-can and when something being editable or not was nothing to do with ACLs. Then we moved to start using ember-can without completely realising what IsEditable previously meant. So overall the code here is a tiny bit clearer/cleaner by adding a proper can view CRD intention instead of overloading the idea of 'editability'.

.changelog/11149.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+ui: Don't show a CRD warning for read-only intentions
+```

ui/packages/consul-ui/app/abilities/intention.js

@@ -4,6 +4,9 @@ export default class IntentionAbility extends BaseAbility {
   resource = 'intention';
 
   get canWrite() {
-    return super.canWrite && (typeof this.item === 'undefined' || this.item.IsEditable);
+    return super.canWrite && (typeof this.item === 'undefined' || !this.canViewCRD);
+  }
+  get canViewCRD() {
+    return (typeof this.item !== 'undefined' && this.item.IsManagedByCRD);
   }
 }

ui/packages/consul-ui/app/components/consul/intention/list/table/index.hbs

@@ -53,6 +53,7 @@ as |item index|>
         {{/if}}
         </td>
     </BlockSlot>
+{{#if (or (can "write intention" item=item) (can "view CRD intention" item=item))}}
     <BlockSlot @name="actions" as |index change checked|>
       <PopoverMenu
         @expanded={{if (eq checked index) true false}}
@@ -101,7 +102,7 @@ as |item index|>
                 </InformedAction>
               </div>
             </li>
-          {{else}}
+          {{else if (can "view CRD intention" item=item)}}
             <li role="none">
               <div role="menu">
                 <InformedAction
@@ -140,4 +141,5 @@ as |item index|>
         </BlockSlot>
       </PopoverMenu>
     </BlockSlot>
+{{/if}}
 </TabularCollection>

ui/packages/consul-ui/app/models/intention.js

@@ -37,9 +37,4 @@ export default class Intention extends Model {
     );
     return typeof meta !== 'undefined';
   }
-
-  @computed('IsManagedByCRD')
-  get IsEditable() {
-    return !this.IsManagedByCRD;
-  }
 }

ui/packages/consul-ui/app/templates/dc/intentions/edit.hbs

@@ -10,7 +10,7 @@ as |route|>
       </BlockSlot>
       <BlockSlot @name="header">
           <h1>
-  {{#if item.IsEditable}}
+  {{#if (can "write intention" item=item)}}
     {{#if item.ID}}
             Edit Intention
     {{else}}