implement logging of exam edits on workflow's current step

src/pages/api/exam/[module]/index.ts

@@ -6,6 +6,8 @@ import client from "@/lib/mongodb";
 import { sessionOptions } from "@/lib/session";
 import { mapBy } from "@/utils";
 import { requestUser } from "@/utils/api";
+import { getApprovalWorkflowsByExamId, updateApprovalWorkflows } from "@/utils/approval.workflows.be";
+import { generateExamDifferences } from "@/utils/exam.differences";
 import { getExams } from "@/utils/exams.be";
 import { isAdmin } from "@/utils/users";
 import { withIronSessionApiRoute } from "iron-session/next";
@@ -108,8 +110,26 @@ async function POST(req: NextApiRequest, res: NextApiResponse) {
 					responseStatus = 207;
 					responseMessage = `Successfully created exam with ID: "${exam.id}" but something went wrong while creating the Approval Workflow(s).`;
 				}
+			} else { // if exam was updated, log the updates
+				const approvalWorkflows = await getApprovalWorkflowsByExamId(exam.id);
+				
+				if (approvalWorkflows) {
+					const differences = generateExamDifferences(docSnap as Exam, exam as Exam);
+					if (differences) {
+						approvalWorkflows.forEach((workflow) => {
+							const currentStepIndex = workflow.steps.findIndex(step => !step.completed || step.rejected);
+		
+							if (workflow.steps[currentStepIndex].examChanges === undefined) {
+								workflow.steps[currentStepIndex].examChanges = [...differences];
+							} else {
+								workflow.steps[currentStepIndex].examChanges!.push(...differences);
+							}
+						});
+						await updateApprovalWorkflows("active-workflows", approvalWorkflows);
+					}
+				}
 			}
-
+			
 			res.status(responseStatus).json({
 				message: responseMessage,
 			});