[lib] Introduce MinimallyEncodedRawThreadInfo and validator

Summary:
`RawThreadInfo` type w/ minimally encoded fields.

Next diffs:
- Higher level utilities for translating back/forth from `RawThreadInfo` <=> `MinimallyEncodedRawThreadInfo`
- Native refactoring + migrations
- Web refactoring
- Flipping the switch

---

Depends on D9735

Test Plan: Single unit test, will be tested implicitly in subsequent diffs as well.

Reviewers: ashoat, ginsu, tomek, rohan

Reviewed By: tomek

Subscribers: wyilio

Differential Revision: https://phab.comm.dev/D9736

lib/permissions/minimally-encoded-thread-permissions.js

@@ -11,16 +11,18 @@ import type {
 } from '../types/thread-permission-types.js';
 import type {
   MemberInfo,
+  RawThreadInfo,
   RoleInfo,
   ThreadCurrentUserInfo,
 } from '../types/thread-types.js';
 import {
   memberInfoValidator,
+  rawThreadInfoValidator,
   roleInfoValidator,
   threadCurrentUserInfoValidator,
 } from '../types/thread-types.js';
 import { entries, invertObjectToMap } from '../utils/objects.js';
-import { tRegex, tShape } from '../utils/validation-utils.js';
+import { tID, tRegex, tShape } from '../utils/validation-utils.js';
 import type { TRegex } from '../utils/validation-utils.js';
 
 // `baseRolePermissionEncoding` maps permission names to indices.
@@ -227,6 +229,21 @@ const minimallyEncodedMemberInfoValidator: TInterface<MinimallyEncodedMemberInfo
     permissions: tHexEncodedPermissionsBitmask,
   });
 
+export type MinimallyEncodedRawThreadInfo = {
+  ...RawThreadInfo,
+  +members: $ReadOnlyArray<MinimallyEncodedMemberInfo>,
+  +roles: { +[id: string]: MinimallyEncodedRoleInfo },
+  +currentUser: MinimallyEncodedThreadCurrentUserInfo,
+};
+
+const minimallyEncodedRawThreadInfoValidator: TInterface<MinimallyEncodedRawThreadInfo> =
+  tShape<MinimallyEncodedRawThreadInfo>({
+    ...rawThreadInfoValidator.meta.props,
+    members: t.list(minimallyEncodedMemberInfoValidator),
+    roles: t.dict(tID, minimallyEncodedRoleInfoValidator),
+    currentUser: minimallyEncodedThreadCurrentUserInfoValidator,
+  });
+
 export {
   permissionsToBitmaskHex,
   hasPermission,
@@ -237,4 +254,5 @@ export {
   minimallyEncodedRoleInfoValidator,
   minimallyEncodedThreadCurrentUserInfoValidator,
   minimallyEncodedMemberInfoValidator,
+  minimallyEncodedRawThreadInfoValidator,
 };

lib/permissions/minimally-encoded-thread-permissions.test.js

@@ -5,13 +5,15 @@ import {
   decodeThreadRolePermissionsBitmaskArray,
   hasPermission,
   minimallyEncodedMemberInfoValidator,
+  minimallyEncodedRawThreadInfoValidator,
   minimallyEncodedRoleInfoValidator,
   minimallyEncodedThreadCurrentUserInfoValidator,
   permissionsToBitmaskHex,
   rolePermissionToBitmaskHex,
   threadRolePermissionsBlobToBitmaskArray,
 } from './minimally-encoded-thread-permissions.js';
 import type { ThreadRolePermissionsBlob } from '../types/thread-permission-types.js';
+import { threadTypes } from '../types/thread-types-enum.js';
 
 describe('minimallyEncodedThreadPermissions', () => {
   const permissions = {
@@ -362,3 +364,70 @@ describe('minimallyEncodedMemberInfoValidator', () => {
     ).toBe(false);
   });
 });
+
+describe('minimallyEncodedRawThreadInfoValidator', () => {
+  const minimalRawThreadInfo = {
+    id: '85171',
+    type: threadTypes.PERSONAL,
+    name: '',
+    description: '',
+    color: '6d49ab',
+    creationTime: 1675887298557,
+    parentThreadID: '1',
+    members: [
+      {
+        id: '256',
+        role: null,
+        permissions: '87fff',
+        isSender: false,
+      },
+      {
+        id: '83853',
+        role: '85172',
+        permissions: '3027f',
+        isSender: true,
+      },
+    ],
+    roles: {
+      '85172': {
+        id: '85172',
+        name: 'Members',
+        permissions: [
+          '000',
+          '010',
+          '020',
+          '100',
+          '110',
+          '030',
+          '040',
+          '060',
+          '050',
+          '090',
+          '005',
+          '015',
+          '0a9',
+        ],
+        isDefault: true,
+      },
+    },
+    currentUser: {
+      role: '85172',
+      permissions: '3027f',
+      subscription: {
+        home: true,
+        pushNotifs: true,
+      },
+      unread: false,
+    },
+    repliesCount: 0,
+    containingThreadID: '1',
+    community: '1',
+    pinnedCount: 0,
+  };
+
+  it('should validate correctly formed MinimallyEncodedRawThreadInfo', () => {
+    expect(
+      minimallyEncodedRawThreadInfoValidator.is(minimalRawThreadInfo),
+    ).toBe(true);
+  });
+});