getStatistics handler, db-interface and ts API

frontend/src/API/API.ts

@@ -11,6 +11,7 @@ import {
   NewProject,
   WeeklyReport,
   StrNameChange,
+  Statistics,
 } from "../Types/goTypes";
 
 /**
@@ -258,6 +259,17 @@ interface API {
     reportId: number,
     token: string,
   ): Promise<APIResponse<string>>;
+
+  /**
+   * Retrieves the total time spent on a project for a particular user (the user is determined by the token)
+   *
+   * @param {string} projectName The name of the project
+   * @param {string} token The authentication token
+   */
+  getStatistics(
+    projectName: string,
+    token: string,
+  ): Promise<APIResponse<Statistics>>;
 }
 
 /** An instance of the API */
@@ -962,4 +974,30 @@ export const api: API = {
       return { success: false, message: "Failed to delete report" };
     }
   },
+  async getStatistics(
+    token: string,
+    projectName: string,
+  ): Promise<APIResponse<Statistics>> {
+    try {
+      const response = await fetch(
+        `/api/getStatistics/?projectName=${projectName}`,
+        {
+          method: "GET",
+          headers: {
+            "Content-Type": "application/json",
+            Authorization: "Bearer " + token,
+          },
+        },
+      );
+
+      if (!response.ok) {
+        return { success: false, message: "Failed to get statistics" };
+      } else {
+        const data = (await response.json()) as Statistics;
+        return { success: true, data };
+      }
+    } catch (e) {
+      return { success: false, message: "Failed to get statistics" };
+    }
+  },
 };

frontend/src/Types/goTypes.ts

@@ -124,6 +124,14 @@ export interface WeeklyReport {
    */
   signedBy?: number /* int */;
 }
+export interface Statistics {
+  totalDevelopmentTime: number /* int */;
+  totalMeetingTime: number /* int */;
+  totalAdminTime: number /* int */;
+  totalOwnWorkTime: number /* int */;
+  totalStudyTime: number /* int */;
+  totalTestingTime: number /* int */;
+}
 export interface UpdateWeeklyReport {
   /**
    * The name of the project, as it appears in the database