验证状态：会话生命周期与状态码

// All ten possible status string values (StatusChoices, source of truth):
// "Not Started"  | "In Progress" | "Approved"     | "Declined" |
// "In Review"    | "Resubmitted" | "Awaiting User"|
// "Expired"      | "Abandoned"   | "Kyc Expired"

async function handleWebhook(webhook) {
  const { status, vendor_data: vendorData } = webhook;

  switch (status) {
    case "Not Started":
      // Session created but user hasn't opened the link yet
      break;

    case "In Progress":
      // User is actively completing verification steps
      break;

    case "Approved":
      // All checks passed — grant access
      await db.users.update(vendorData, {
        verified: true,
        verifiedAt: new Date(),
        decision: webhook.decision,
      });
      break;

    case "Declined":
      // Verification failed — notify user
      await db.users.update(vendorData, {
        verificationStatus: "declined",
        declineReasons: webhook.decision?.warnings,
      });
      break;

    case "In Review":
      // Needs manual review by compliance team
      await db.users.update(vendorData, {
        verificationStatus: "pending_review",
      });
      break;

    case "Awaiting User":
      // KYB parent waiting for all child KYC parties to finish
      await db.users.update(vendorData, {
        verificationStatus: "awaiting_kyb_parties",
      });
      break;

    case "Resubmitted":
      // User will redo specific steps
      await db.users.update(vendorData, {
        verificationStatus: "resubmission_pending",
        resubmitInfo: webhook.resubmit_info,
      });
      break;

    case "Abandoned":
      // User started but didn't finish — send reminder
      await sendReminderEmail(vendorData);
      break;

    case "Expired":
    case "Kyc Expired":
      // Session expired — create a new one
      await createNewSession(vendorData);
      break;
  }
}

{
  "session_id": "uuid-of-the-session",
  "status": "Resubmitted",
  "resubmit_info": {
    "nodes_to_resubmit": [
      { "node_id": "feature_ocr", "feature": "OCR" },
      { "node_id": "feature_liveness", "feature": "LIVENESS" }
    ],
    "reasons": {
      "feature_ocr": "DOCUMENT_EXPIRED",
      "feature_liveness": "LOW_LIVENESS_SCORE"
    }
  }
}