updated the fucking mf fanavaran

src/lookups/fanavaran-last-car-policy.spec.ts

@@ -1,4 +1,5 @@
 import {
+  collectPartyVinCandidates,
   filterPoliciesByLine,
   insuranceLineLabel,
   parseLastCarPolicyInput,
@@ -114,6 +115,39 @@ describe("fanavaran last car policy", () => {
     ).toBe("NAS451100P4934023");
   });
 
+  it("does not let chassis stored on vehicle.vin beat the inquiry VIN", () => {
+    const party = {
+      vehicle: {
+        vin: "NAAN01CA9BK493683",
+        inquiry: {
+          mapped: {
+            VIN: "IRFC901V119493683",
+            ChassisNo: "NAAN01CA9BK493683",
+          },
+        },
+      },
+    };
+    expect(pickVinFromPartyVehicle(party)).toBe("IRFC901V119493683");
+    expect(collectPartyVinCandidates(party)).toEqual([
+      "IRFC901V119493683",
+      "NAAN01CA9BK493683",
+    ]);
+  });
+
+  it("prefers the VIN-inquiry row that already has PlaqueKindId", () => {
+    expect(
+      pickFanavaranVehicleFromInquiry([
+        { Id: 1, VIN: "IRFC901V119493683" },
+        { Id: 2, VIN: "IRFC901V119493683", PlaqueKindId: 15, PlaqueSampleId: 24 },
+      ]),
+    ).toEqual({
+      Id: 2,
+      VIN: "IRFC901V119493683",
+      PlaqueKindId: 15,
+      PlaqueSampleId: 24,
+    });
+  });
+
   it("reads plaque kind and sample from VIN inquiry for the lookup filter", () => {
     expect(
       pickFanavaranPlaqueLookupFields({

src/lookups/fanavaran-last-car-policy.ts

@@ -243,6 +243,12 @@ export function pickFanavaranVehicleFromInquiry(
       const match = inquired.find((row) => pickVehicleId(row) === vehicleId);
       if (match) return asObjectRecord(match);
     }
+    const withPlaqueKind = inquired.find(
+      (row) =>
+        parseFanavaranId(asObjectRecord(row)?.PlaqueKindId) != null ||
+        parseFanavaranId(asObjectRecord(row)?.plaqueKindId) != null,
+    );
+    if (withPlaqueKind) return asObjectRecord(withPlaqueKind);
     return asObjectRecord(inquired[0]);
   }
   return asObjectRecord(inquired);
@@ -251,15 +257,51 @@ export function pickFanavaranVehicleFromInquiry(
 export function pickVinFromPartyVehicle(party: {
   vehicle?: { vin?: unknown; inquiry?: unknown };
 } | null | undefined): string | null {
-  const direct = normalizeVin(party?.vehicle?.vin);
-  if (direct) return direct;
+  return collectPartyVinCandidates(party)[0] ?? null;
+}
 
-  const inquiry = party?.vehicle?.inquiry;
-  const nested = asObjectRecord(inquiry);
-  const mapped = pickVehicleVin(asObjectRecord(nested?.mapped));
-  if (mapped) return mapped;
-  const raw = pickVehicleVin(asObjectRecord(nested?.raw ?? inquiry));
-  return raw || null;
+/**
+ * VIN first (mapped/raw VIN fields), then party.vehicle.vin, then chassis.
+ * Damaged cars often store chassis on `vehicle.vin` which must not win over the real VIN.
+ */
+export function collectPartyVinCandidates(party: {
+  vehicle?: { vin?: unknown; inquiry?: unknown };
+} | null | undefined): string[] {
+  const inquiry = asObjectRecord(party?.vehicle?.inquiry);
+  const mapped = asObjectRecord(inquiry?.mapped);
+  const rawData = asObjectRecord(
+    asObjectRecord(inquiry?.raw)?.data ?? inquiry?.raw ?? inquiry,
+  );
+  const values = [
+    mapped?.VIN,
+    mapped?.Vin,
+    mapped?.vin,
+    mapped?.VinNumberField,
+    rawData?.VIN,
+    rawData?.Vin,
+    rawData?.vin,
+    rawData?.VinNumberField,
+    party?.vehicle?.vin,
+    mapped?.ChassisNo,
+    mapped?.chassisNo,
+    mapped?.ShsNum,
+    mapped?.shsNam,
+    mapped?.ChassisNumberField,
+    rawData?.ChassisNo,
+    rawData?.chassisNo,
+    rawData?.ShsNum,
+    rawData?.shsNam,
+    rawData?.ChassisNumberField,
+  ];
+  const unique: string[] = [];
+  const seen = new Set<string>();
+  for (const value of values) {
+    const vin = normalizeVin(value);
+    if (!vin || seen.has(vin)) continue;
+    seen.add(vin);
+    unique.push(vin);
+  }
+  return unique;
 }
 
 export type FanavaranPlaqueLookupFields = {