Add stats repository

frontend/repositories/statistics/api.ts

@@ -0,0 +1,15 @@
+import ApiService from '@/services/api.service'
+import { Statistics } from '@/models/statistics'
+import { StatisticsRepository } from './interface'
+
+export class FromApiStatisticsRepository implements StatisticsRepository {
+  constructor(
+    private readonly request = ApiService
+  ) {}
+
+  async fetch(projectId: string): Promise<Statistics> {
+    const url = `/projects/${projectId}/statistics`
+    const response = await this.request.get(url)
+    return Statistics.valueOf(response.data)
+  }
+}

frontend/repositories/statistics/interface.ts

@@ -0,0 +1,6 @@
+import { Statistics } from '@/models/statistics'
+
+export interface StatisticsRepository {
+
+  fetch(projectId: string): Promise<Statistics>
+}