feat(server): notification system (#10053)

closes CLOUD-52

packages/backend/server/src/__tests__/utils/index.ts

@@ -1,5 +1,6 @@
 export * from './blobs';
 export * from './invite';
+export * from './notification';
 export * from './permission';
 export * from './testing-app';
 export * from './testing-module';

packages/backend/server/src/__tests__/utils/notification.ts

@@ -0,0 +1,86 @@
+import { PaginationInput } from '../../base/graphql/pagination';
+import type {
+  MentionInput,
+  PaginatedNotificationObjectType,
+} from '../../core/notification/types';
+import type { TestingApp } from './testing-app';
+
+export async function listNotifications(
+  app: TestingApp,
+  pagination: PaginationInput
+): Promise<PaginatedNotificationObjectType> {
+  const res = await app.gql(
+    `
+    query listNotifications($pagination: PaginationInput!) {
+      currentUser {
+        notifications(pagination: $pagination) {
+          totalCount
+          edges {
+            cursor
+            node {
+              id
+              type
+              level
+              read
+              createdAt
+              updatedAt
+              body
+            }
+          }
+          pageInfo {
+            startCursor
+            endCursor
+            hasNextPage
+            hasPreviousPage
+          }
+        }
+      }
+    }
+    `,
+    { pagination }
+  );
+  return res.currentUser.notifications;
+}
+
+export async function getNotificationCount(app: TestingApp): Promise<number> {
+  const res = await app.gql(
+    `
+    query notificationCount {
+      currentUser {
+        notificationCount
+      }
+    }
+    `
+  );
+  return res.currentUser.notificationCount;
+}
+
+export async function mentionUser(
+  app: TestingApp,
+  input: MentionInput
+): Promise<string> {
+  const res = await app.gql(
+    `
+    mutation mentionUser($input: MentionInput!) {
+      mentionUser(input: $input)
+    }
+    `,
+    { input }
+  );
+  return res.mentionUser;
+}
+
+export async function readNotification(
+  app: TestingApp,
+  id: string
+): Promise<boolean> {
+  const res = await app.gql(
+    `
+    mutation readNotification($id: String!) {
+      readNotification(id: $id)
+    }
+    `,
+    { id }
+  );
+  return res.readNotification;
+}

packages/backend/server/src/__tests__/utils/testing-app.ts

@@ -1,3 +1,5 @@
+import { randomUUID } from 'node:crypto';
+
 import { INestApplication, ModuleMetadata } from '@nestjs/common';
 import type { NestExpressApplication } from '@nestjs/platform-express';
 import { TestingModuleBuilder } from '@nestjs/testing';
@@ -182,12 +184,19 @@ export class TestingApp extends ApplyType<INestApplication>() {
     return res.body.data;
   }
 
-  async createUser(email: string, override?: Partial<User>): Promise<TestUser> {
+  private randomEmail() {
+    return `test-${randomUUID()}@affine.pro`;
+  }
+
+  async createUser(
+    email?: string,
+    override?: Partial<User>
+  ): Promise<TestUser> {
     const model = this.get(UserModel);
     // TODO(@forehalo): model factories
     //   TestingData.user.create()
     const user = await model.create({
-      email,
+      email: email ?? this.randomEmail(),
       password: '1',
       name: email,
       emailVerifiedAt: new Date(),
@@ -200,8 +209,8 @@ export class TestingApp extends ApplyType<INestApplication>() {
     return user as Omit<User, 'password'> & { password: string };
   }
 
-  async signup(email: string, override?: Partial<User>) {
-    const user = await this.createUser(email, override);
+  async signup(email?: string, override?: Partial<User>) {
+    const user = await this.createUser(email ?? this.randomEmail(), override);
     await this.login(user);
     return user;
   }