package io.helidon.bestbank.creditscore;
+
+ import io.helidon.webserver.http.HttpRules;
+ import io.helidon.webserver.http.HttpService;
+ import io.helidon.webserver.http.ServerRequest;
+ import io.helidon.webserver.http.ServerResponse;
+
+ import jakarta.json.Json;
+ import jakarta.json.JsonObject;
+
+ import static java.lang.System.Logger.Level.INFO;
+
+ public class CreditscoreService implements HttpService {
+
+ private static final System.Logger logger = System.getLogger(CreditscoreService.class.getName());
+
+ private static final int SCORE_MAX = 800;
+ private static final int SCORE_MIN = 550;
+
+ /**
+ * A service registers itself by updating the routine rules.
+ *
+ * @param rules the routing rules.
+ */
+ @Override
+ public final void routing(HttpRules rules) {
+ rules
+ .get("/healthcheck", this::getHealthCheck)
+ .post("/", this::postMethodCreditScore);
+ }
+
+ /**
+ * Return a health check message.
+ *
+ * @param request the server request
+ * @param response the server response
+ */
+ private void getHealthCheck(final ServerRequest request, final ServerResponse response) {
+ JsonObject returnObject = Json.createObjectBuilder()
+ .add("message", "The credit score provider is running.")
+ .build();
+
+ response.send(returnObject);
+ }
+
+ /**
+ * POST method to return a customer data including credit score value, using the data that was provided.
+ * Examples:
+ *
+ * {@code
+ * curl -s --json '{"first-name":"Frank","last-name":"Helidon","date-of-birth":"15-09-2018","ssn":"1"}' localhost:8080/credit-score | jq
+ * {
+ * "first-name": "Frank",
+ * "last-name": "Helidon",
+ * "date-of-birth": "15-09-2018",
+ * "ssn": "00000001",
+ * "score": 552
+ * }
+ * }
+ *
+ * @param request the server request
+ * @param response the server response
+ */
+ private void postMethodCreditScore(final ServerRequest request, final ServerResponse response) {
+ JsonObject reqJson = request.content()
+ .as(JsonObject.class);
+
+ logger.log(INFO, "Request: {0}", reqJson);
+
+ int creditScore = calculateCreditScore(reqJson.getString("firstname"),
+ reqJson.getString("lastname"),
+ reqJson.getString("dateofbirth"),
+ reqJson.getString("ssn"));
+
+ JsonObject resJson = Json.createObjectBuilder(reqJson)
+ .add("score", creditScore)
+ .build();
+
+ response.send(resJson);
+ }
+
+ /**
+ * Calculate credit score based on customer's properties.
+ *
+ * @param firstName first name
+ * @param lastName last name
+ * @param dateOfBirth date of birth
+ * @param ssn social security number
+ * @return calculated credit score
+ */
+ private int calculateCreditScore(String firstName, String lastName, String dateOfBirth, String ssn) {
+
+ int score = Math.abs(firstName.hashCode() + lastName.hashCode() + dateOfBirth.hashCode() + ssn.hashCode());
+
+ score = score % SCORE_MAX;
+
+ while (score < SCORE_MIN) {
+ score = score + 100;
+ }
+ return score;
+ }
+
+ }
+ ```
+ >> Please note the code above accepts a GET for healthcheck and POST method to calculate the credit score value based on the account owner's details which passed using JSON.
+
+7. Build the project:
+
+ ```
+