Calculate insurer report review duration

src/expert-insurer/expert-insurer.service.ts

@@ -264,6 +264,18 @@ export class ExpertInsurerService {
     return String(aid);
   }
 
+  private calculateReviewDurationMinutes(
+    createdAt: Date | string | undefined,
+    updatedAt: Date | string | undefined,
+  ): number | null {
+    const startedAtMs = new Date(createdAt as any).getTime();
+    const reviewedAtMs = new Date(updatedAt as any).getTime();
+    if (Number.isNaN(startedAtMs) || Number.isNaN(reviewedAtMs)) return null;
+
+    const durationMinutes = Math.max(reviewedAtMs - startedAtMs, 0) / 60_000;
+    return Math.round(durationMinutes * 100) / 100;
+  }
+
   private mapBlameFileSummaryForInsurerExpert(b: any) {
     return {
       kind: "blame" as const,
@@ -275,6 +287,10 @@ export class ExpertInsurerService {
       blameStatus: b.blameStatus,
       createdAt: b.createdAt,
       updatedAt: b.updatedAt,
+      reviewDurationMinutes: this.calculateReviewDurationMinutes(
+        b.createdAt,
+        b.updatedAt,
+      ),
     };
   }
 
@@ -288,6 +304,10 @@ export class ExpertInsurerService {
       claimStatus: c.claimStatus,
       createdAt: c.createdAt,
       updatedAt: c.updatedAt,
+      reviewDurationMinutes: this.calculateReviewDurationMinutes(
+        c.createdAt,
+        c.updatedAt,
+      ),
     };
   }