From 21fecd755b5dc46a9af49f1e2c9d6f33505f8176 Mon Sep 17 00:00:00 2001
From: Daniel Emery <danielremery@gmail.com>
Date: Sat, 4 Nov 2023 13:00:27 +0100
Subject: [PATCH] #66 Expose new statistics resolver to get individual user
 statistics

---
 src/gql.ts                       |  8 ++++++++
 src/index.ts                     |  2 ++
 src/statistics/statistics.dto.ts |  6 ++++++
 src/statistics/statistics.gql.ts | 16 ++++++++++++++++
 4 files changed, 32 insertions(+)
 create mode 100644 src/statistics/statistics.dto.ts
 create mode 100644 src/statistics/statistics.gql.ts

diff --git a/src/gql.ts b/src/gql.ts
index 85e03f5..f385b16 100644
--- a/src/gql.ts
+++ b/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 {
diff --git a/src/index.ts b/src/index.ts
index 9484164..34ab6d7 100644
--- a/src/index.ts
+++ b/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,
diff --git a/src/statistics/statistics.dto.ts b/src/statistics/statistics.dto.ts
new file mode 100644
index 0000000..3e760ad
--- /dev/null
+++ b/src/statistics/statistics.dto.ts
@@ -0,0 +1,6 @@
+export interface IndividualUserStatistic {
+  name?: string;
+  email: string;
+  totalQuizCompletions: number;
+  averageScorePercentage: number;
+}
diff --git a/src/statistics/statistics.gql.ts b/src/statistics/statistics.gql.ts
new file mode 100644
index 0000000..8318ca3
--- /dev/null
+++ b/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,
+};