At the point now where existing profiles can login. Still need to fix something that's preventing new profiles from entering their names

src/main/java/com/buttongames/butterfly/http/handlers/impl/EacoinRequestHandler.java

@@ -1,6 +1,13 @@
 package com.buttongames.butterfly.http.handlers.impl;
 
+import com.buttongames.butterfly.hibernate.dao.impl.ButterflyUserDao;
+import com.buttongames.butterfly.hibernate.dao.impl.CardDao;
+import com.buttongames.butterfly.http.exception.InvalidRequestException;
+import com.buttongames.butterfly.http.exception.InvalidRequestMethodException;
 import com.buttongames.butterfly.http.handlers.BaseRequestHandler;
+import com.buttongames.butterfly.model.Card;
+import com.buttongames.butterfly.xml.XmlUtils;
+import com.buttongames.butterfly.xml.kbinxml.KXmlBuilder;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.springframework.stereotype.Component;
@@ -17,6 +24,20 @@ public class EacoinRequestHandler extends BaseRequestHandler {
 
     private final Logger LOG = LogManager.getLogger(EacoinRequestHandler.class);
 
+    /**
+     * How much Paseli to use when it's unlimited (for now, it's always unlimited).
+     */
+    private static final int INFINITE_PASELI_AMOUNT = 50000;
+
+    /**
+     * DAO for interacting with cards in the database.
+     */
+    private final CardDao cardDao;
+
+    public EacoinRequestHandler(final CardDao cardDao) {
+        this.cardDao = cardDao;
+    }
+
     /**
      * Handles an incoming request for the <code>eacoin</code> module.
      * @param requestBody The XML document of the incoming request.
@@ -27,6 +48,65 @@ public class EacoinRequestHandler extends BaseRequestHandler {
     @Override
     public Object handleRequest(final Element requestBody, final Request request, final Response response) {
         final String requestMethod = request.attribute("method");
-        return null;
+
+        if (requestMethod.equals("checkin")) {
+            return this.handleCheckinRequest(requestBody, request, response);
+        } else if (requestMethod.equals("consume")) {
+            return this.handleConsumeRequest(request, response);
+        } else {
+            throw new InvalidRequestMethodException();
+        }
+    }
+
+    /**
+     * Handles an incoming request for the <code>eacoin.checkin</code> method.
+     * @param requestBody The XML document of the incoming request.
+     * @param request The Spark request
+     * @param response The Spark response
+     * @return A response object for Spark
+     */
+    private Object handleCheckinRequest(final Element requestBody, final Request request, final Response response) {
+        final String cardId = XmlUtils.strValueAtPath(requestBody, "/eacoin/cardid");
+        final String pin = XmlUtils.strValueAtPath(requestBody, "/eacoin/passwd");
+
+        // verify the pin for sanity
+        // check the pin against the pin of the owner of the ref ID
+        final Card card = this.cardDao.findByNfcId(cardId);
+
+        if (card == null ||
+                card.getUser() == null ||
+                !card.getUser().getPin().equals(pin)) {
+            throw new InvalidRequestException();
+        }
+
+        // send a response
+        // TODO: send the actual Paseli balance
+        final KXmlBuilder builder = KXmlBuilder.create("response")
+                .e("eacoin")
+                    .s16("sequence", 1).up()
+                    .u8("acstatus", 1).up()
+                    .str("acid", "X").up()
+                    .str("acname", "X").up()
+                    .s32("balance", INFINITE_PASELI_AMOUNT).up()
+                    .str("sessid", "X");
+
+        return this.sendResponse(request, response, builder);
+    }
+
+    /**
+     * Handles an incoming request for the <code>eacoin.consume</code> method.
+     * @param request The Spark request
+     * @param response The Spark response
+     * @return A response object for Spark
+     */
+    private Object handleConsumeRequest(final Request request, final Response response) {
+        // TODO: actually consume the Paseli and not make it unlimited
+        final KXmlBuilder builder = KXmlBuilder.create("response")
+                .e("eacoin")
+                    .u8("acstatus", 0).up()
+                    .u8("autocharge", 0).up()
+                    .s32("balance", INFINITE_PASELI_AMOUNT);
+
+        return this.sendResponse(request, response, builder);
     }
 }

src/main/java/com/buttongames/butterfly/spring/configuration/HttpConfiguration.java

@@ -113,7 +113,7 @@ public class HttpConfiguration {
     }
 
     @Bean
-    public EacoinRequestHandler eacoinRequestHandler() {
-        return new EacoinRequestHandler();
+    public EacoinRequestHandler eacoinRequestHandler(final CardDao cardDao) {
+        return new EacoinRequestHandler(cardDao);
     }
 }

src/main/java/com/buttongames/butterfly/util/PropertyNames.java

@@ -8,4 +8,5 @@ public class PropertyNames {
 
     public static final String PORT = "${server.port}";
     public static final String MAINT_MODE = "${server.maintenance}";
+    public static final String UNLIMITED_PASELI = "${server.paseli.unlimited}";
 }

src/main/resources/butterfly.properties

@@ -1,4 +1,3 @@
 # Server properties
 server.port = 80
 server.maintenance = false
-server.paseli.unlimited = false