unsignReport handler + API function

frontend/src/API/API.ts

@@ -221,6 +221,15 @@ interface API {
    */
   signReport(reportId: number, token: string): Promise<APIResponse<string>>;
 
+  /**
+   * Unsigns a report. Keep in mind that the user which the token belongs to must be
+   * the project manager of the project the report belongs to.
+   *
+   * @param {number} reportId The id of the report to sign
+   * @param {string} token The authentication token
+   */
+  unsignReport(reportId: number, token: string): Promise<APIResponse<string>>;
+
   /**
    * Promotes a user to project manager within a project.
    *
@@ -846,6 +855,29 @@ export const api: API = {
     }
   },
 
+  async unsignReport(
+    reportId: number,
+    token: string,
+  ): Promise<APIResponse<string>> {
+    try {
+      const response = await fetch(`/api/unsignReport/${reportId}`, {
+        method: "PUT",
+        headers: {
+          "Content-Type": "application/json",
+          Authorization: "Bearer " + token,
+        },
+      });
+
+      if (!response.ok) {
+        return { success: false, message: "Failed to unsign report" };
+      } else {
+        return { success: true, message: "Report unsigned" };
+      }
+    } catch (e) {
+      return { success: false, message: "Failed to unsign report" };
+    }
+  },
+
   async promoteToPm(
     userName: string,
     projectName: string,