Listen to permissions changes and add/remove domains (#3969)

See here for more info:
https://app.zenhub.com/workspaces/wallet-api-platform-63bee08a4e3b9d001108416e/issues/gh/metamask/metamask-planning/2142

## Explanation

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When there exists a permission for a domain, we will then start saving
their network selection. We also retroactively add network selections
for domains which already have permissions.

## References

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links that reviewers should consult to understand these changes better?

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* Fixes #12345
* Related to #67890
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## Changelog

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### `@metamask/selected-network-controller`

- **CHANGED**: Domain selection is written/deleted when permissions are
added/removed

## Checklist

- [ ] I've updated the test suite for new or updated code as appropriate
- [ ] I've updated documentation (JSDoc, Markdown, etc.) for new or
updated code as appropriate
- [ ] I've highlighted breaking changes using the "BREAKING" category
above as appropriate

---------

Co-authored-by: Alex Donesky <adonesky@gmail.com>

packages/selected-network-controller/package.json

@@ -39,6 +39,7 @@
   },
   "devDependencies": {
     "@metamask/auto-changelog": "^3.4.4",
+    "@metamask/permission-controller": "^8.0.1",
     "@types/jest": "^27.4.1",
     "deepmerge": "^4.2.2",
     "immer": "^9.0.6",

packages/selected-network-controller/src/SelectedNetworkController.ts

@@ -8,6 +8,11 @@ import type {
   NetworkControllerStateChangeEvent,
   ProviderProxy,
 } from '@metamask/network-controller';
+import type {
+  PermissionControllerStateChange,
+  GetSubjects as PermissionControllerGetSubjectsAction,
+  HasPermissions as PermissionControllerHasPermissions,
+} from '@metamask/permission-controller';
 import { createEventEmitterProxy } from '@metamask/swappable-obj-proxy';
 import type { Patch } from 'immer';
 
@@ -69,11 +74,6 @@ export type SelectedNetworkControllerSetNetworkClientIdForDomainAction = {
   handler: SelectedNetworkController['setNetworkClientIdForDomain'];
 };
 
-type PermissionControllerHasPermissions = {
-  type: `PermissionController:hasPermissions`;
-  handler: (domain: string) => boolean;
-};
-
 export type SelectedNetworkControllerActions =
   | SelectedNetworkControllerGetSelectedNetworkStateAction
   | SelectedNetworkControllerGetNetworkClientIdForDomainAction
@@ -82,12 +82,15 @@ export type SelectedNetworkControllerActions =
 export type AllowedActions =
   | NetworkControllerGetNetworkClientByIdAction
   | NetworkControllerGetStateAction
-  | PermissionControllerHasPermissions;
+  | PermissionControllerHasPermissions
+  | PermissionControllerGetSubjectsAction;
 
 export type SelectedNetworkControllerEvents =
   SelectedNetworkControllerStateChangeEvent;
 
-export type AllowedEvents = NetworkControllerStateChangeEvent;
+export type AllowedEvents =
+  | NetworkControllerStateChangeEvent
+  | PermissionControllerStateChange;
 
 export type SelectedNetworkControllerMessenger = RestrictedControllerMessenger<
   typeof controllerName,
@@ -136,6 +139,45 @@ export class SelectedNetworkController extends BaseController<
     });
     this.#registerMessageHandlers();
 
+    // this is fetching all the dapp permissions from the PermissionsController and looking for any domains that are not in domains state in this controller. Then we take any missing domains and add them to state here, setting it with the globally selected networkClientId (fetched from the NetworkController)
+    this.messagingSystem
+      .call('PermissionController:getSubjectNames')
+      .filter((domain) => this.state.domains[domain] === undefined)
+      .forEach((domain) =>
+        this.setNetworkClientIdForDomain(
+          domain,
+          this.messagingSystem.call('NetworkController:getState')
+            .selectedNetworkClientId,
+        ),
+      );
+
+    this.messagingSystem.subscribe(
+      'PermissionController:stateChange',
+      (_, patches) => {
+        patches.forEach(({ op, path }) => {
+          const isChangingSubject =
+            path[0] === 'subjects' && path[1] !== undefined;
+          if (isChangingSubject && typeof path[1] === 'string') {
+            const domain = path[1];
+            if (op === 'add' && this.state.domains[domain] === undefined) {
+              this.setNetworkClientIdForDomain(
+                domain,
+                this.messagingSystem.call('NetworkController:getState')
+                  .selectedNetworkClientId,
+              );
+            } else if (
+              op === 'remove' &&
+              this.state.domains[domain] !== undefined
+            ) {
+              this.update(({ domains }) => {
+                delete domains[domain];
+              });
+            }
+          }
+        });
+      },
+    );
+
     this.messagingSystem.subscribe(
       'NetworkController:stateChange',
       ({ selectedNetworkClientId }, patches) => {

packages/selected-network-controller/tests/SelectedNetworkController.test.ts

@@ -32,6 +32,7 @@ function buildMessenger() {
  * @param options - The options bag.
  * @param options.messenger - A controller messenger.
  * @param options.hasPermissions - Whether the requesting domain has permissions.
+ * @param options.getSubjectNames - Permissions controller list of domains with permissions
  * @returns The network controller restricted messenger.
  */
 export function buildSelectedNetworkControllerMessenger({
@@ -40,12 +41,14 @@ export function buildSelectedNetworkControllerMessenger({
     SelectedNetworkControllerEvents | AllowedEvents
   >(),
   hasPermissions,
+  getSubjectNames,
 }: {
   messenger?: ControllerMessenger<
     SelectedNetworkControllerActions | AllowedActions,
     SelectedNetworkControllerEvents | AllowedEvents
   >;
   hasPermissions?: boolean;
+  getSubjectNames?: string[];
 } = {}): SelectedNetworkControllerMessenger {
   messenger.registerActionHandler(
     'NetworkController:getNetworkClientById',
@@ -62,25 +65,35 @@ export function buildSelectedNetworkControllerMessenger({
     'PermissionController:hasPermissions',
     jest.fn().mockReturnValue(hasPermissions),
   );
+  messenger.registerActionHandler(
+    'PermissionController:getSubjectNames',
+    jest.fn().mockReturnValue(getSubjectNames),
+  );
   return messenger.getRestricted({
     name: controllerName,
     allowedActions: [
       'NetworkController:getNetworkClientById',
       'NetworkController:getState',
       'PermissionController:hasPermissions',
+      'PermissionController:getSubjectNames',
+    ],
+    allowedEvents: [
+      'NetworkController:stateChange',
+      'PermissionController:stateChange',
     ],
-    allowedEvents: ['NetworkController:stateChange'],
   });
 }
 
 jest.mock('@metamask/swappable-obj-proxy');
 
 const setup = ({
   hasPermissions = true,
+  getSubjectNames = [],
   state,
 }: {
   hasPermissions?: boolean;
   state?: SelectedNetworkControllerState;
+  getSubjectNames?: string[];
 } = {}) => {
   const mockProviderProxy = {
     setTarget: jest.fn(),
@@ -121,6 +134,7 @@ const setup = ({
     buildSelectedNetworkControllerMessenger({
       messenger,
       hasPermissions,
+      getSubjectNames,
     });
   const controller = new SelectedNetworkController({
     messenger: selectedNetworkControllerMessenger,
@@ -432,4 +446,71 @@ describe('SelectedNetworkController', () => {
       });
     });
   });
+  describe('When a permission is added or removed', () => {
+    it('should add new domain to domains list on permission add', async () => {
+      const { controller, messenger } = setup();
+      const mockPermission = {
+        parentCapability: 'eth_accounts',
+        id: 'example.com',
+        date: Date.now(),
+        caveats: [{ type: 'restrictToAccounts', value: ['0x...'] }],
+      };
+
+      messenger.publish('PermissionController:stateChange', { subjects: {} }, [
+        {
+          op: 'add',
+          path: ['subjects', 'example.com', 'permissions'],
+          value: mockPermission,
+        },
+      ]);
+
+      const { domains } = controller.state;
+      expect(domains['example.com']).toBeDefined();
+    });
+
+    it('should remove domain from domains list on permission removal', async () => {
+      const { controller, messenger } = setup({
+        state: { perDomainNetwork: true, domains: { 'example.com': 'foo' } },
+      });
+
+      messenger.publish('PermissionController:stateChange', { subjects: {} }, [
+        {
+          op: 'remove',
+          path: ['subjects', 'example.com', 'permissions'],
+        },
+      ]);
+
+      const { domains } = controller.state;
+      expect(domains['example.com']).toBeUndefined();
+    });
+  });
+  describe('Constructor checks for domains in permissions', () => {
+    it('should set networkClientId for domains not already in state', async () => {
+      const getSubjectNamesMock = ['newdomain.com'];
+      const { controller } = setup({
+        state: { perDomainNetwork: true, domains: {} },
+        getSubjectNames: getSubjectNamesMock,
+      });
+
+      // Now, 'newdomain.com' should have the selectedNetworkClientId set
+      expect(controller.state.domains['newdomain.com']).toBe('mainnet');
+    });
+
+    it('should not modify domains already in state', async () => {
+      const { controller } = setup({
+        state: {
+          perDomainNetwork: true,
+          domains: {
+            'existingdomain.com': 'initialNetworkId',
+          },
+        },
+        getSubjectNames: ['existingdomain.com'],
+      });
+
+      // The 'existingdomain.com' should retain its initial networkClientId
+      expect(controller.state.domains['existingdomain.com']).toBe(
+        'initialNetworkId',
+      );
+    });
+  });
 });

packages/selected-network-controller/tsconfig.build.json

@@ -8,7 +8,8 @@
   "references": [
     { "path": "../base-controller/tsconfig.build.json" },
     { "path": "../network-controller/tsconfig.build.json" },
-    { "path": "../json-rpc-engine/tsconfig.build.json" }
+    { "path": "../json-rpc-engine/tsconfig.build.json" },
+    { "path": "../permission-controller/tsconfig.build.json" }
   ],
   "include": ["../../types", "./src"]
 }

packages/selected-network-controller/tsconfig.json

@@ -13,6 +13,9 @@
     },
     {
       "path": "../json-rpc-engine"
+    },
+    {
+      "path": "../permission-controller"
     }
   ],
   "include": ["../../types", "../../tests", "./src", "./tests"]

yarn.lock

@@ -2417,26 +2417,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@metamask/permission-controller@npm:^7.0.0, @metamask/permission-controller@npm:^7.1.0":
-  version: 7.1.0
-  resolution: "@metamask/permission-controller@npm:7.1.0"
-  dependencies:
-    "@metamask/base-controller": ^4.0.1
-    "@metamask/controller-utils": ^8.0.1
-    "@metamask/json-rpc-engine": ^7.3.1
-    "@metamask/rpc-errors": ^6.1.0
-    "@metamask/utils": ^8.2.0
-    "@types/deep-freeze-strict": ^1.1.0
-    deep-freeze-strict: ^1.1.1
-    immer: ^9.0.6
-    nanoid: ^3.1.31
-  peerDependencies:
-    "@metamask/approval-controller": ^5.1.1
-  checksum: 889213cca32cbf5b32b7e71c70ded0aeea32eae169ec67fb0d0bc8dcaa183b222f9d5417f657e331d7fb21ecb71f250cf1c932110d4b1e2167972b30bd012098
-  languageName: node
-  linkType: hard
-
-"@metamask/permission-controller@workspace:packages/permission-controller":
+"@metamask/permission-controller@^8.0.1, @metamask/permission-controller@workspace:packages/permission-controller":
   version: 0.0.0-use.local
   resolution: "@metamask/permission-controller@workspace:packages/permission-controller"
   dependencies:
@@ -2463,6 +2444,25 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@metamask/permission-controller@npm:^7.0.0, @metamask/permission-controller@npm:^7.1.0":
+  version: 7.1.0
+  resolution: "@metamask/permission-controller@npm:7.1.0"
+  dependencies:
+    "@metamask/base-controller": ^4.0.1
+    "@metamask/controller-utils": ^8.0.1
+    "@metamask/json-rpc-engine": ^7.3.1
+    "@metamask/rpc-errors": ^6.1.0
+    "@metamask/utils": ^8.2.0
+    "@types/deep-freeze-strict": ^1.1.0
+    deep-freeze-strict: ^1.1.1
+    immer: ^9.0.6
+    nanoid: ^3.1.31
+  peerDependencies:
+    "@metamask/approval-controller": ^5.1.1
+  checksum: 889213cca32cbf5b32b7e71c70ded0aeea32eae169ec67fb0d0bc8dcaa183b222f9d5417f657e331d7fb21ecb71f250cf1c932110d4b1e2167972b30bd012098
+  languageName: node
+  linkType: hard
+
 "@metamask/permission-log-controller@workspace:packages/permission-log-controller":
   version: 0.0.0-use.local
   resolution: "@metamask/permission-log-controller@workspace:packages/permission-log-controller"
@@ -2673,6 +2673,7 @@ __metadata:
     "@metamask/base-controller": ^4.1.1
     "@metamask/json-rpc-engine": ^7.3.2
     "@metamask/network-controller": ^17.2.0
+    "@metamask/permission-controller": ^8.0.1
     "@metamask/swappable-obj-proxy": ^2.2.0
     "@metamask/utils": ^8.3.0
     "@types/jest": ^27.4.1