#66 Expose new statistics resolver to get individual user statistics

src/gql.ts

@@ -116,6 +116,13 @@ const typeDefs = gql`
     completion: QuizCompletion
   }
 
+  type IndividualUserStatistic {
+    name: String
+    email: String!
+    totalQuizCompletions: Int!
+    averageScorePercentage: Float!
+  }
+
   "Available filters for the quizzes query"
   input QuizFilters {
     """
@@ -144,6 +151,7 @@ const typeDefs = gql`
     """
     users(first: Int, after: String, sortedBy: UserSortOption): UserConnection
     me: UserDetails
+    individualUserStatistics: [IndividualUserStatistic]
   }
 
   type Mutation {

src/index.ts

@@ -14,6 +14,7 @@ import typeDefs from './gql';
 import { userQueries } from './user/user.gql';
 import { quizMutations, quizQueries } from './quiz/quiz.gql';
 import { Role } from './user/user.dto';
+import { statisticsQueries } from './statistics/statistics.gql';
 
 const QUIZLORD_VERSION_HEADER = 'X-Quizlord-Api-Version';
 
@@ -39,6 +40,7 @@ const resolvers = {
   Query: {
     ...quizQueries,
     ...userQueries,
+    ...statisticsQueries,
   },
   Mutation: {
     ...quizMutations,

src/statistics/statistics.dto.ts

@@ -0,0 +1,6 @@
+export interface IndividualUserStatistic {
+  name?: string;
+  email: string;
+  totalQuizCompletions: number;
+  averageScorePercentage: number;
+}

src/statistics/statistics.gql.ts

@@ -0,0 +1,16 @@
+import { QuizlordContext } from '..';
+import { authorisationService, statisticsService } from '../service.locator';
+import { IndividualUserStatistic } from './statistics.dto';
+
+async function individualUserStatistics(
+  _p: unknown,
+  _: void,
+  context: QuizlordContext,
+): Promise<IndividualUserStatistic[]> {
+  authorisationService.requireUserRole(context, 'USER');
+  return statisticsService.getIndividualUserStatistics();
+}
+
+export const statisticsQueries = {
+  individualUserStatistics,
+};