build UserContext non-static (#93)

UserContext building without static references, backwards compatible

src/main/java/com/bunq/sdk/context/BunqContext.java

@@ -15,8 +15,7 @@ public final class BunqContext {
 
   public static void loadApiContext(ApiContext apiContext) {
     BunqContext.apiContext = apiContext;
-    BunqContext.userContext = new UserContext(apiContext.getSessionContext().getUserId());
-    BunqContext.userContext.initMainMonetaryAccount();
+    BunqContext.userContext = new UserContext(apiContext);
   }
 
   public static ApiContext getApiContext() {

src/main/java/com/bunq/sdk/context/SessionContext.java

@@ -101,5 +101,4 @@ Date getExpiryTime() {
   public Integer getUserId() {
     return userId;
   }
-
 }

src/main/java/com/bunq/sdk/context/UserContext.java

@@ -2,6 +2,7 @@
 
 import com.bunq.sdk.exception.BunqException;
 import com.bunq.sdk.model.core.BunqModel;
+import com.bunq.sdk.model.core.UserContextHelper;
 import com.bunq.sdk.model.generated.endpoint.MonetaryAccountBank;
 import com.bunq.sdk.model.generated.endpoint.User;
 import com.bunq.sdk.model.generated.endpoint.UserCompany;
@@ -18,54 +19,41 @@ public class UserContext {
   private static final String ERROR_NO_ACTIVE_MONETARY_ACCOUNT_FOUND = "No active monetary account found.";
   private static final String ERROR_PRIMARY_MONETARY_ACCOUNT_IS_NOT_SET = "Primary monetaryAccount is not set.";
 
-  private static final String MONETARY_ACCOUNT_STATUS_ACTIVE = "ACTIVE";
-  private static final int INDEX_FIRST = 0;
-
+  private final ApiContext apiContext;
   private UserCompany userCompany;
   private UserPerson userPerson;
   private MonetaryAccountBank primaryMonetaryAccountBank;
-  private Integer userId;
-
-  public UserContext(Integer userId) {
-    this.setUser(this.getUserObject());
-    this.userId = userId;
-  }
 
-  private BunqModel getUserObject() {
-    return User.list().getValue().get(INDEX_FIRST).getReferencedObject();
+  public UserContext(ApiContext apiContext) {
+    this.apiContext = apiContext;
+    refreshContext();
   }
 
-  private void setUser(BunqModel user) {
-    if (user instanceof UserPerson) {
-      this.userPerson = (UserPerson) user;
-    } else if (user instanceof UserCompany) {
-      this.userCompany = (UserCompany) user;
+  private void initUser(User user) {
+    if (user!=null && user.getUserPerson()!=null) {
+      this.userPerson = user.getUserPerson();
+    } else if (user!=null && user.getUserCompany()!=null) {
+      this.userCompany = user.getUserCompany();
     } else {
       throw new BunqException(ERROR_UNEXPECTED_USER_INSTANCE);
     }
   }
 
-  public void initMainMonetaryAccount() {
-    List<MonetaryAccountBank> allMonetaryAccount =  MonetaryAccountBank.list().getValue();
-
-    for (MonetaryAccountBank monetaryAccountBank : allMonetaryAccount) {
-      if (monetaryAccountBank.getStatus().equals(MONETARY_ACCOUNT_STATUS_ACTIVE)) {
-        this.primaryMonetaryAccountBank = monetaryAccountBank;
-
-        return;
-      }
+  private void initMainMonetaryAccount(MonetaryAccountBank monetaryAccountBank) {
+    if(monetaryAccountBank==null) {
+      throw new BunqException(ERROR_NO_ACTIVE_MONETARY_ACCOUNT_FOUND);
     }
-
-    throw new BunqException(ERROR_NO_ACTIVE_MONETARY_ACCOUNT_FOUND);
+    this.primaryMonetaryAccountBank = monetaryAccountBank;
   }
 
   public void refreshContext() {
-    this.setUser(this.getUserObject());
-    this.initMainMonetaryAccount();
+    UserContextHelper helper = new UserContextHelper(this.apiContext);
+    this.initUser(helper.getFirstUser());
+    this.initMainMonetaryAccount(helper.getFirstActiveMonetaryAccountBank(getUserId()));
   }
 
   public Integer getUserId() {
-    return this.userId;
+    return this.apiContext.getSessionContext().getUserId();
   }
 
   public boolean isOnlyUserPersonSet() {

src/main/java/com/bunq/sdk/model/core/UserContextHelper.java

@@ -0,0 +1,47 @@
+package com.bunq.sdk.model.core;
+
+import com.bunq.sdk.context.ApiContext;
+import com.bunq.sdk.http.ApiClient;
+import com.bunq.sdk.http.BunqResponse;
+import com.bunq.sdk.http.BunqResponseRaw;
+import com.bunq.sdk.model.generated.endpoint.MonetaryAccountBank;
+import com.bunq.sdk.model.generated.endpoint.User;
+
+import java.util.List;
+
+public class UserContextHelper extends BunqModel {
+  private static final String MONETARY_ACCOUNT_STATUS_ACTIVE = "ACTIVE";
+  private static final int INDEX_FIRST = 0;
+
+  private final ApiClient apiClient;
+
+  public UserContextHelper(ApiContext apiContext) {
+    this.apiClient = new ApiClient(apiContext);
+  }
+
+  private BunqResponseRaw getRawResponse(String url) {
+    return this.apiClient.get(url, null, null);
+  }
+
+  public User getFirstUser() {
+    BunqResponseRaw responseRaw = getRawResponse("user");
+    BunqResponse<List<User>> response = fromJsonList(User.class, responseRaw);
+    return response.getValue().get(INDEX_FIRST);
+  }
+
+  public MonetaryAccountBank getFirstActiveMonetaryAccountBank(Integer userId) {
+    BunqResponseRaw responseRaw = getRawResponse(String.format("user/%s/monetary-account-bank", userId));
+    BunqResponse<List<MonetaryAccountBank>> response = fromJsonList(MonetaryAccountBank.class, responseRaw, MonetaryAccountBank.class.getSimpleName());
+    for (MonetaryAccountBank monetaryAccountBank : response.getValue()) {
+      if (monetaryAccountBank.getStatus().equals(MONETARY_ACCOUNT_STATUS_ACTIVE)) {
+        return monetaryAccountBank;
+      }
+    }
+    return null;
+  }
+
+  @Override
+  public boolean isAllFieldNull() {
+    return true;
+  }
+}

src/test/java/com/bunq/sdk/context/UserContextTest.java

@@ -0,0 +1,19 @@
+package com.bunq.sdk.context;
+
+import com.bunq.sdk.BunqSdkTestBase;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class UserContextTest extends BunqSdkTestBase {
+
+    @Test
+    public void testConstruct() {
+        ApiContext context = getApiContext();
+
+        UserContext sut = new UserContext(context);
+
+        assertNotNull(sut.getUserId());
+        assertNotNull(sut.getMainMonetaryAccountId());
+    }
+}