Add asset apis

Fixes https://roadmap.entgra.net/issues/10178

components/application-mgt/io.entgra.device.mgt.core.application.mgt.common/src/main/java/io/entgra/device/mgt/core/application/mgt/common/dto/ItuneAppDTO.java

@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2018 - 2023, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package io.entgra.device.mgt.core.application.mgt.common.dto;
+
+public class ItuneAppDTO {
+    int id;
+    String packageName;
+    String version;
+    String description;
+    String title;
+    String paymentMethod;
+    String iconURL;
+    String category;
+
+    public String getCategory() {
+        return category;
+    }
+
+    public void setCategory(String category) {
+        this.category = category;
+    }
+
+    public String getIconURL() {
+        return iconURL;
+    }
+
+    public void setIconURL(String iconURL) {
+        this.iconURL = iconURL;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getPackageName() {
+        return packageName;
+    }
+
+    public void setPackageName(String packageName) {
+        this.packageName = packageName;
+    }
+
+
+    public String getVersion() {
+        return version;
+    }
+
+    public void setVersion(String version) {
+        this.version = version;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getPaymentMethod() {
+        return paymentMethod;
+    }
+
+    public void setPaymentMethod(String paymentMethod) {
+        this.paymentMethod = paymentMethod;
+    }
+
+}

components/application-mgt/io.entgra.device.mgt.core.application.mgt.common/src/main/java/io/entgra/device/mgt/core/application/mgt/common/dto/VppAssetDTO.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2018 - 2023, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package io.entgra.device.mgt.core.application.mgt.common.dto;
+
+public class VppAssetDTO extends VppItuneAssetDTO {
+    int id;
+    int appId;
+    int tenantId;
+    String createdTime;
+    String lastUpdatedTime;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public int getAppId() {
+        return appId;
+    }
+
+    public void setAppId(int appId) {
+        this.appId = appId;
+    }
+
+    public int getTenantId() {
+        return tenantId;
+    }
+
+    public void setTenantId(int tenantId) {
+        this.tenantId = tenantId;
+    }
+
+    public String getCreatedTime() {
+        return createdTime;
+    }
+
+    public void setCreatedTime(String createdTime) {
+        this.createdTime = createdTime;
+    }
+
+    public String getLastUpdatedTime() {
+        return lastUpdatedTime;
+    }
+
+    public void setLastUpdatedTime(String lastUpdatedTime) {
+        this.lastUpdatedTime = lastUpdatedTime;
+    }
+
+}

components/application-mgt/io.entgra.device.mgt.core.application.mgt.common/src/main/java/io/entgra/device/mgt/core/application/mgt/common/dto/VppItuneAssetDTO.java

@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2018 - 2023, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. licenses this file to you under the Apache License,
+ * Version 2.0 (the String LicenseString ); you may not use this file except
+ * in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * String AS ISString  BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package io.entgra.device.mgt.core.application.mgt.common.dto;
+
+import java.util.List;
+
+public class VppItuneAssetDTO {
+
+
+    String adamId;
+    String assignedCount;
+    String availableCount;
+    String deviceAssignable;
+    String pricingParam;
+    String productType;
+    String retiredCount;
+    String revocable;
+
+    List<String> supportedPlatforms;
+
+    public List<String> getSupportedPlatforms() {
+        return supportedPlatforms;
+    }
+
+    public void setSupportedPlatforms(List<String> supportedPlatforms) {
+        this.supportedPlatforms = supportedPlatforms;
+    }
+
+    public String getAdamId() {
+        return adamId;
+    }
+
+    public void setAdamId(String adamId) {
+        this.adamId = adamId;
+    }
+
+    public String getAssignedCount() {
+        return assignedCount;
+    }
+
+    public void setAssignedCount(String assignedCount) {
+        this.assignedCount = assignedCount;
+    }
+
+    public String getAvailableCount() {
+        return availableCount;
+    }
+
+    public void setAvailableCount(String availableCount) {
+        this.availableCount = availableCount;
+    }
+
+    public String getDeviceAssignable() {
+        return deviceAssignable;
+    }
+
+    public void setDeviceAssignable(String deviceAssignable) {
+        this.deviceAssignable = deviceAssignable;
+    }
+
+    public String getPricingParam() {
+        return pricingParam;
+    }
+
+    public void setPricingParam(String pricingParam) {
+        this.pricingParam = pricingParam;
+    }
+
+    public String getProductType() {
+        return productType;
+    }
+
+    public void setProductType(String productType) {
+        this.productType = productType;
+    }
+
+    public String getRetiredCount() {
+        return retiredCount;
+    }
+
+    public void setRetiredCount(String retiredCount) {
+        this.retiredCount = retiredCount;
+    }
+
+    public String getRevocable() {
+        return revocable;
+    }
+
+    public void setRevocable(String revocable) {
+        this.revocable = revocable;
+    }
+
+
+}

components/application-mgt/io.entgra.device.mgt.core.application.mgt.common/src/main/java/io/entgra/device/mgt/core/application/mgt/common/dto/VppPaginationDTO.java

@@ -22,6 +22,7 @@ public class VppPaginationDTO {
     int currentPageIndex;
     int size;
     String tokenExpirationDate;
+    int nextPageIndex;
     int totalPages;
     String uId;
     String versionId;
@@ -50,6 +51,14 @@ public class VppPaginationDTO {
         this.tokenExpirationDate = tokenExpirationDate;
     }
 
+    public int getNextPageIndex() {
+        return nextPageIndex;
+    }
+
+    public void setNextPageIndex(int nextPageIndex) {
+        this.nextPageIndex = nextPageIndex;
+    }
+
     public int getTotalPages() {
         return totalPages;
     }

components/application-mgt/io.entgra.device.mgt.core.application.mgt.common/src/main/java/io/entgra/device/mgt/core/application/mgt/common/services/VPPApplicationManager.java

@@ -19,6 +19,7 @@
 package io.entgra.device.mgt.core.application.mgt.common.services;
 
 import io.entgra.device.mgt.core.application.mgt.common.dto.ProxyResponse;
+import io.entgra.device.mgt.core.application.mgt.common.dto.VppAssetDTO;
 import io.entgra.device.mgt.core.application.mgt.common.dto.VppUserDTO;
 import io.entgra.device.mgt.core.application.mgt.common.exception.ApplicationManagementException;
 
@@ -34,5 +35,9 @@ public interface VPPApplicationManager {
 
     void syncUsers(String clientId) throws ApplicationManagementException;
 
+    void syncAssets(int nextPageIndex) throws ApplicationManagementException;
+
+    VppAssetDTO getAssetByAppId(String appId) throws ApplicationManagementException;
+
     ProxyResponse callVPPBackend(String url, String payload, String accessToken, String method) throws IOException;
 }

components/application-mgt/io.entgra.device.mgt.core.application.mgt.common/src/main/java/io/entgra/device/mgt/core/application/mgt/common/wrapper/VppItuneAssetResponseWrapper.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2018 - 2023, Entgra (Pvt) Ltd. (http://www.entgra.io) All Rights Reserved.
+ *
+ * Entgra (Pvt) Ltd. licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package io.entgra.device.mgt.core.application.mgt.common.wrapper;
+
+import io.entgra.device.mgt.core.application.mgt.common.dto.VppAssetDTO;
+import io.entgra.device.mgt.core.application.mgt.common.dto.VppItuneUserDTO;
+import io.entgra.device.mgt.core.application.mgt.common.dto.VppPaginationDTO;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class VppItuneAssetResponseWrapper extends VppPaginationDTO {
+
+    List<VppAssetDTO> assets;
+    
+    public List<VppAssetDTO> getAssets() {
+        return assets;
+    }
+
+    public void setAssets(List<VppAssetDTO> assets) {
+        this.assets = assets;
+    }
+
+}

components/application-mgt/io.entgra.device.mgt.core.application.mgt.core/src/main/java/io/entgra/device/mgt/core/application/mgt/core/impl/VppApplicationManagerImpl.java

@@ -18,16 +18,18 @@
 
 package io.entgra.device.mgt.core.application.mgt.core.impl;
 
-import com.google.gson.ExclusionStrategy;
-import com.google.gson.FieldAttributes;
 import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import io.entgra.device.mgt.core.application.mgt.common.dto.ItuneAppDTO;
 import io.entgra.device.mgt.core.application.mgt.common.dto.ProxyResponse;
+import io.entgra.device.mgt.core.application.mgt.common.dto.VppAssetDTO;
 import io.entgra.device.mgt.core.application.mgt.common.dto.VppItuneUserDTO;
-import io.entgra.device.mgt.core.application.mgt.common.wrapper.VppItuneUserRequestWrapper;
 import io.entgra.device.mgt.core.application.mgt.common.dto.VppUserDTO;
 import io.entgra.device.mgt.core.application.mgt.common.exception.ApplicationManagementException;
 import io.entgra.device.mgt.core.application.mgt.common.services.VPPApplicationManager;
+import io.entgra.device.mgt.core.application.mgt.common.wrapper.VppItuneAssetResponseWrapper;
+import io.entgra.device.mgt.core.application.mgt.common.wrapper.VppItuneUserRequestWrapper;
 import io.entgra.device.mgt.core.application.mgt.common.wrapper.VppItuneUserResponseWrapper;
 import io.entgra.device.mgt.core.application.mgt.core.dao.ApplicationDAO;
 import io.entgra.device.mgt.core.application.mgt.core.dao.SPApplicationDAO;
@@ -35,11 +37,13 @@ import io.entgra.device.mgt.core.application.mgt.core.dao.VisibilityDAO;
 import io.entgra.device.mgt.core.application.mgt.core.dao.common.ApplicationManagementDAOFactory;
 import io.entgra.device.mgt.core.application.mgt.core.internal.DataHolder;
 import io.entgra.device.mgt.core.application.mgt.core.lifecycle.LifecycleStateManager;
+import io.entgra.device.mgt.core.application.mgt.core.util.ApplicationManagementUtil;
 import io.entgra.device.mgt.core.application.mgt.core.util.Constants;
 import io.entgra.device.mgt.core.application.mgt.core.util.VppHttpUtil;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.http.HttpStatus;
+import org.wso2.carbon.context.PrivilegedCarbonContext;
 
 import java.io.IOException;
 
@@ -50,8 +54,14 @@ public class VppApplicationManagerImpl implements VPPApplicationManager {
     private static final String USER_UPDATE = APP_API + "/users/update";
     private static final String USER_GET = APP_API + "/users";
     private static final String TOKEN = "";
+    private static final String LOOKUP_API = "https://uclient-api.itunes.apple" +
+            ".com/WebObjects/MZStorePlatform.woa/wa/lookup?version=2&id=";
+    private static final String LOOKUP_API_PREFIX =
+            "&p=mdm-lockup&caller=MDM&platform=enterprisestore&cc=us&l=en";
+
 
     private static final Log log = LogFactory.getLog(VppApplicationManagerImpl.class);
+
     private ApplicationDAO applicationDAO;
     private SPApplicationDAO spApplicationDAO;
     private VisibilityDAO visibilityDAO;
@@ -154,6 +164,56 @@ public class VppApplicationManagerImpl implements VPPApplicationManager {
                 Gson gson = new Gson();
                 VppItuneUserResponseWrapper vppUserResponseWrapper = gson.fromJson
                         (proxyResponse.getData(), VppItuneUserResponseWrapper.class);
+                // TODO: to implement later
+            }
+        } catch (IOException e) {
+            String msg = "Error while syncing VPP users with backend";
+            log.error(msg, e);
+            throw new ApplicationManagementException(msg, e);
+        }
+
+    }
+
+    @Override
+    public void syncAssets(int nextPageIndex) throws ApplicationManagementException {
+        ProxyResponse proxyResponse = null;
+        try {
+            String url = ASSETS;
+            if (nextPageIndex > 0) { // Not the first page
+                url += "?pageIndex=" + nextPageIndex;
+            }
+            proxyResponse = callVPPBackend(url, null, TOKEN, Constants.VPP.GET);
+            if ((proxyResponse.getCode() == HttpStatus.SC_OK || proxyResponse.getCode() ==
+                    HttpStatus.SC_CREATED) && proxyResponse.getData().contains(Constants.VPP.TOTAL_PAGES)) {
+                Gson gson = new Gson();
+                VppItuneAssetResponseWrapper vppItuneAssetResponse = gson.fromJson
+                        (proxyResponse.getData(), VppItuneAssetResponseWrapper.class);
+                if (vppItuneAssetResponse.getSize() > 0) {
+                    for (VppAssetDTO vppAssetDTO : vppItuneAssetResponse.getAssets()) {
+                        vppAssetDTO.setTenantId(PrivilegedCarbonContext
+                                .getThreadLocalCarbonContext().getTenantId());
+                        vppAssetDTO.setCreatedTime(String.valueOf(System.currentTimeMillis()));
+                        vppAssetDTO.setLastUpdatedTime(String.valueOf(System.currentTimeMillis()));
+                    }
+
+                    for (VppAssetDTO vppAssetDTO : vppItuneAssetResponse.getAssets()) {
+                        ItuneAppDTO ituneAppDTO = lookupAsset(vppAssetDTO.getAdamId());
+                        ApplicationManagementUtil.persistApp(ituneAppDTO);
+                    }
+
+                    // TODO: Store/update vppItuneAssetResponse.getAssets() in the DB
+
+                    // TODO: END of DAO access
+
+                }
+
+
+                if (vppItuneAssetResponse.getCurrentPageIndex() == (vppItuneAssetResponse
+                        .getTotalPages() - 1)) {
+                    return;
+                } else {
+                    syncAssets(vppItuneAssetResponse.getNextPageIndex());
+                }
             }
         } catch (IOException e) {
             String msg = "Error while syncing VPP users with backend";
@@ -161,6 +221,73 @@ public class VppApplicationManagerImpl implements VPPApplicationManager {
             throw new ApplicationManagementException(msg, e);
         }
 
+
+    }
+
+    private ItuneAppDTO lookupAsset(String packageName) throws ApplicationManagementException {
+        String lookupURL = LOOKUP_API + packageName + LOOKUP_API_PREFIX;
+        try {
+            ProxyResponse proxyResponse = callVPPBackend(lookupURL, null, TOKEN, Constants.VPP.GET);
+            if ((proxyResponse.getCode() == HttpStatus.SC_OK || proxyResponse.getCode() ==
+                    HttpStatus.SC_CREATED) && proxyResponse.getData().contains(Constants.VPP.GET_APP_DATA_RESPONSE_START)) {
+                String responseData = proxyResponse.getData();
+                JsonObject responseJson = new JsonParser().parse(responseData)
+                        .getAsJsonObject();
+
+                JsonObject results = responseJson.getAsJsonObject(Constants.ApplicationProperties.RESULTS);
+                JsonObject result = results.getAsJsonObject(packageName);
+
+                String iconUrl = result.getAsJsonObject(Constants.ApplicationProperties.ARTWORK)
+                        .get(Constants.ApplicationProperties.URL).getAsString();
+                int lastSlashIndex = iconUrl.lastIndexOf("/");
+                if (lastSlashIndex != -1) {
+                    iconUrl = iconUrl.substring(0, lastSlashIndex + 1) + Constants.VPP.REMOTE_FILE_NAME;
+                }
+
+                String descriptionStandard = result.getAsJsonObject(Constants.ApplicationProperties.DESCRIPTION)
+                        .get(Constants.ApplicationProperties.STANDARD).getAsString();
+                if (descriptionStandard != null && !descriptionStandard.isEmpty()) {
+                    descriptionStandard = descriptionStandard.substring(0, 199);
+                }
+                String name = result.get(Constants.ApplicationProperties.NAME).getAsString();
+                double price = result.getAsJsonArray(Constants.ApplicationProperties.OFFERS).get(0)
+                        .getAsJsonObject().get(Constants.ApplicationProperties.PRICE).getAsDouble();
+                String version = result.getAsJsonArray(Constants.ApplicationProperties.OFFERS)
+                        .get(0).getAsJsonObject().get(Constants.ApplicationProperties.VERSION)
+                        .getAsJsonObject().get(Constants.ApplicationProperties.DISPLAY).getAsString();
+
+                String[] genreNames = new Gson().fromJson(result.getAsJsonArray(Constants.ApplicationProperties.GENRE_NAMES),
+                        String[].class);
+
+                ItuneAppDTO ituneAppDTO = new ItuneAppDTO();
+                ituneAppDTO.setPackageName(packageName);
+                ituneAppDTO.setVersion(version);
+                ituneAppDTO.setDescription(descriptionStandard);
+                ituneAppDTO.setTitle(name);
+
+                if (Constants.ApplicationProperties.PRICE_ZERO.equalsIgnoreCase(String.valueOf(price))) {
+                    ituneAppDTO.setPaymentMethod(Constants.ApplicationProperties.FREE_SUB_METHOD);
+                } else {
+                    ituneAppDTO.setPaymentMethod(Constants.ApplicationProperties.PAID_SUB_METHOD);
+                }
+                ituneAppDTO.setIconURL(iconUrl);
+                ituneAppDTO.setCategory(genreNames[0]);
+
+                return ituneAppDTO;
+            }
+        } catch (IOException e) {
+            String msg = "Error while looking up the app details";
+            log.error(msg, e);
+            throw new ApplicationManagementException(msg, e);
+        }
+        return null;
+    }
+
+
+    public VppAssetDTO getAssetByAppId(String appId) throws ApplicationManagementException {
+        // App ID is the app id of the App management database
+        VppAssetDTO assetDTO = null; // TODO: load from the DB
+        return assetDTO;
     }
 
     @Override

components/application-mgt/io.entgra.device.mgt.core.application.mgt.core/src/main/java/io/entgra/device/mgt/core/application/mgt/core/util/ApplicationManagementUtil.java

@@ -18,15 +18,21 @@
 package io.entgra.device.mgt.core.application.mgt.core.util;
 
 import io.entgra.device.mgt.core.application.mgt.common.ApplicationArtifact;
-import io.entgra.device.mgt.core.application.mgt.core.config.ConfigurationManager;
-import io.entgra.device.mgt.core.application.mgt.core.config.Extension;
-import io.entgra.device.mgt.core.application.mgt.core.exception.BadRequestException;
-import io.entgra.device.mgt.core.device.mgt.common.Base64File;
 import io.entgra.device.mgt.core.application.mgt.common.FileDataHolder;
+import io.entgra.device.mgt.core.application.mgt.common.LifecycleChanger;
 import io.entgra.device.mgt.core.application.mgt.common.dto.ApplicationDTO;
+import io.entgra.device.mgt.core.application.mgt.common.dto.ItuneAppDTO;
 import io.entgra.device.mgt.core.application.mgt.common.exception.ApplicationManagementException;
+import io.entgra.device.mgt.core.application.mgt.common.exception.InvalidConfigurationException;
 import io.entgra.device.mgt.core.application.mgt.common.exception.RequestValidatingException;
+import io.entgra.device.mgt.core.application.mgt.common.response.Application;
+import io.entgra.device.mgt.core.application.mgt.common.response.Category;
+import io.entgra.device.mgt.core.application.mgt.common.services.ApplicationManager;
+import io.entgra.device.mgt.core.application.mgt.common.services.ApplicationStorageManager;
+import io.entgra.device.mgt.core.application.mgt.common.services.ReviewManager;
 import io.entgra.device.mgt.core.application.mgt.common.services.SPApplicationManager;
+import io.entgra.device.mgt.core.application.mgt.common.services.SubscriptionManager;
+import io.entgra.device.mgt.core.application.mgt.common.wrapper.ApplicationUpdateWrapper;
 import io.entgra.device.mgt.core.application.mgt.common.wrapper.ApplicationWrapper;
 import io.entgra.device.mgt.core.application.mgt.common.wrapper.CustomAppReleaseWrapper;
 import io.entgra.device.mgt.core.application.mgt.common.wrapper.CustomAppWrapper;
@@ -35,18 +41,31 @@ import io.entgra.device.mgt.core.application.mgt.common.wrapper.PublicAppRelease
 import io.entgra.device.mgt.core.application.mgt.common.wrapper.PublicAppWrapper;
 import io.entgra.device.mgt.core.application.mgt.common.wrapper.WebAppReleaseWrapper;
 import io.entgra.device.mgt.core.application.mgt.common.wrapper.WebAppWrapper;
-import org.apache.commons.logging.Log;
+import io.entgra.device.mgt.core.application.mgt.core.config.ConfigurationManager;
-import org.apache.commons.logging.LogFactory;
+import io.entgra.device.mgt.core.application.mgt.core.config.Extension;
-import io.entgra.device.mgt.core.application.mgt.common.exception.InvalidConfigurationException;
+import io.entgra.device.mgt.core.application.mgt.core.exception.BadRequestException;
-import io.entgra.device.mgt.core.application.mgt.common.services.ApplicationManager;
-import io.entgra.device.mgt.core.application.mgt.common.services.ApplicationStorageManager;
-import io.entgra.device.mgt.core.application.mgt.common.services.ReviewManager;
-import io.entgra.device.mgt.core.application.mgt.common.services.SubscriptionManager;
 import io.entgra.device.mgt.core.application.mgt.core.lifecycle.LifecycleStateManager;
+import io.entgra.device.mgt.core.device.mgt.common.Base64File;
+import io.entgra.device.mgt.core.device.mgt.common.DeviceManagementConstants;
 import io.entgra.device.mgt.core.device.mgt.core.common.util.FileUtil;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
 import java.io.InputStream;
 import java.lang.reflect.Constructor;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.nio.channels.Channels;
+import java.nio.channels.ReadableByteChannel;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Base64;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
@@ -247,4 +266,258 @@ public class ApplicationManagementUtil {
             throw new InvalidConfigurationException(msg, e);
         }
     }
+
+    public static void persistApp(ItuneAppDTO product) throws ApplicationManagementException {
+        ApplicationManager applicationManager = APIUtil.getApplicationManager();
+        List<Category> categories = applicationManager.getRegisteredCategories();
+        if (product != null && product.getVersion() != null) {
+            // Generate artifacts
+            ApplicationArtifact applicationArtifact = generateArtifacts(product);
+
+            List<String> packageNamesOfApps = new ArrayList<>();
+            packageNamesOfApps.add(product.getPackageName());
+
+            List<Application> existingApps = applicationManager.getApplications(packageNamesOfApps);
+
+            if (existingApps != null && existingApps.size() > 0) {
+                Application app = existingApps.get(0);
+                if (product.getPackageName().equals(app.getPackageName())) {
+                    ApplicationUpdateWrapper applicationUpdateWrapper = generatePubAppUpdateWrapper(product, categories);
+                    applicationManager.updateApplication(app.getId(), applicationUpdateWrapper);
+
+                    PublicAppReleaseWrapper publicAppReleaseWrapper = new PublicAppReleaseWrapper();
+                    if (app.getSubMethod()
+                            .equalsIgnoreCase(Constants.ApplicationProperties.FREE_SUB_METHOD)) {
+                        publicAppReleaseWrapper.setPrice(0.0);
+                    } else {
+                        publicAppReleaseWrapper.setPrice(1.0);
+                    }
+
+                    publicAppReleaseWrapper.setDescription(product.getDescription());
+                    publicAppReleaseWrapper.setReleaseType("ga");
+                    publicAppReleaseWrapper.setVersion(product.getVersion());
+                    publicAppReleaseWrapper.setSupportedOsVersions("4.0-12.3");
+                    applicationManager.updatePubAppRelease(app.getApplicationReleases().get(0).getUuid(),
+                            publicAppReleaseWrapper, applicationArtifact);
+                    return;
+                }
+            } else {
+
+                // Generate App wrapper
+                PublicAppWrapper publicAppWrapper = generatePubAppWrapper(product, categories);
+                PublicAppReleaseWrapper appReleaseWrapper = new PublicAppReleaseWrapper();
+
+                if (publicAppWrapper.getSubMethod()
+                        .equalsIgnoreCase(Constants.ApplicationProperties.FREE_SUB_METHOD)) {
+                    appReleaseWrapper.setPrice(0.0);
+                } else {
+                    appReleaseWrapper.setPrice(1.0);
+                }
+
+                appReleaseWrapper.setDescription(product.getDescription());
+                appReleaseWrapper.setReleaseType("ga");
+                appReleaseWrapper.setVersion(product.getVersion());
+                appReleaseWrapper.setPackageName(product.getPackageName());
+                appReleaseWrapper.setSupportedOsVersions("4.0-12.3");
+
+                publicAppWrapper.setPublicAppReleaseWrappers(
+                        Arrays.asList(new PublicAppReleaseWrapper[]{appReleaseWrapper}));
+
+                try {
+                    updateImages(appReleaseWrapper, applicationArtifact.getIconName(),
+                            applicationArtifact.getIconStream(), applicationArtifact.getScreenshots());
+
+                    Application application = applicationManager.createApplication(publicAppWrapper, false);
+                    if (application != null && (application.getApplicationReleases().get(0).getCurrentStatus() == null
+                            || application.getApplicationReleases().get(0).getCurrentStatus().equals("CREATED"))) {
+                        String uuid = application.getApplicationReleases().get(0).getUuid();
+                        LifecycleChanger lifecycleChanger = new LifecycleChanger();
+                        lifecycleChanger.setAction("IN-REVIEW");
+                        applicationManager.changeLifecycleState(uuid, lifecycleChanger);
+                        lifecycleChanger.setAction("APPROVED");
+                        applicationManager.changeLifecycleState(uuid, lifecycleChanger);
+                        lifecycleChanger.setAction("PUBLISHED");
+                        applicationManager.changeLifecycleState(uuid, lifecycleChanger);
+                    }
+                } catch (IOException e) {
+                    String msg = "Error while downloading images of release.";
+                    log.error(msg);
+                    throw new ApplicationManagementException(msg, e);
+                }
+            }
+        }
+    }
+
+    private static PublicAppWrapper generatePubAppWrapper(ItuneAppDTO product, List<Category> categories) {
+        PublicAppWrapper publicAppWrapper = new PublicAppWrapper();
+        publicAppWrapper.setName(product.getTitle());
+        publicAppWrapper.setDescription(product.getDescription());
+        publicAppWrapper.setCategories(
+                Collections.singletonList(Constants.ApplicationProperties.APPLE_STORE_SYNCED_APP_CATEGORY));//Default category
+        for (Category category : categories) {
+            if (product.getCategory() == null) {
+                List<String> pubAppCategories = new ArrayList<>();
+                pubAppCategories.add(Constants.ApplicationProperties.APPLE_STORE_SYNCED_APP_CATEGORY);
+                publicAppWrapper.setCategories(pubAppCategories);
+                break;
+            } else if (product.getCategory().equalsIgnoreCase(category.getCategoryName())) {
+                List<String> pubAppCategories = new ArrayList<>();
+                pubAppCategories.add(category.getCategoryName());
+                pubAppCategories.add(Constants.ApplicationProperties.APPLE_STORE_SYNCED_APP_CATEGORY);
+                publicAppWrapper.setCategories(pubAppCategories);
+                break;
+            }
+        }
+        if (product.getPaymentMethod().equalsIgnoreCase(Constants.ApplicationProperties.FREE_SUB_METHOD)) {
+            publicAppWrapper.setSubMethod(Constants.ApplicationProperties.FREE_SUB_METHOD);
+        } else {
+            publicAppWrapper.setSubMethod(Constants.ApplicationProperties.PAID_SUB_METHOD);
+        }
+        // TODO: purchase an app from app store and see how to capture the real value for price
+        // field.
+        publicAppWrapper.setPaymentCurrency("$");
+        publicAppWrapper.setDeviceType(DeviceManagementConstants.MobileDeviceTypes.MOBILE_DEVICE_TYPE_IOS);
+        return publicAppWrapper;
+    }
+
+    private static ApplicationUpdateWrapper generatePubAppUpdateWrapper(ItuneAppDTO product, List<Category> categories) {
+        ApplicationUpdateWrapper applicationUpdateWrapper = new ApplicationUpdateWrapper();
+        applicationUpdateWrapper.setName(product.getTitle());
+        applicationUpdateWrapper.setDescription(product.getDescription());
+        applicationUpdateWrapper.setCategories(
+                Collections.singletonList(Constants
+                        .ApplicationProperties.APPLE_STORE_SYNCED_APP_CATEGORY));//Default
+        // add the default APPLE_STORE_SYNCED_APP_CATEGORY
+        for (Category category : categories) {
+            if (product.getCategory() == null) {
+                List<String> pubAppCategories = new ArrayList<>();
+                pubAppCategories.add(Constants.ApplicationProperties.APPLE_STORE_SYNCED_APP_CATEGORY);
+                applicationUpdateWrapper.setCategories(pubAppCategories);
+                break;
+            } else if (product.getCategory().equalsIgnoreCase(category.getCategoryName())) {
+                List<String> pubAppCategories = new ArrayList<>();
+                pubAppCategories.add(category.getCategoryName());
+                pubAppCategories.add(Constants.ApplicationProperties.APPLE_STORE_SYNCED_APP_CATEGORY);
+                applicationUpdateWrapper.setCategories(pubAppCategories);
+                break;
+            }
+        }
+        if (product.getPaymentMethod().equalsIgnoreCase(Constants.ApplicationProperties.FREE_SUB_METHOD)) {
+            applicationUpdateWrapper.setSubMethod(Constants.ApplicationProperties.FREE_SUB_METHOD);
+        } else {
+            applicationUpdateWrapper.setSubMethod(Constants.ApplicationProperties.PAID_SUB_METHOD);
+        }
+        // TODO: purchase an app from Playstore and see how to capture the real value for price field.
+        applicationUpdateWrapper.setPaymentCurrency("$");
+        return applicationUpdateWrapper;
+    }
+
+    private static ApplicationArtifact generateArtifacts(ItuneAppDTO product) throws ApplicationManagementException {
+        ApplicationArtifact applicationArtifact = new ApplicationArtifact();
+        String prefix = product.getPackageName();
+        try {
+            String iconName = prefix + "_icon";
+            applicationArtifact.setIconName(iconName);
+            InputStream iconInputStream = getInputStream(iconName, product.getIconURL());
+            applicationArtifact.setIconStream(iconInputStream);
+            Map<String, InputStream> screenshotMap = new HashMap<>();
+            // TODO: look for a way to get screenshots
+
+            for (int a = 0; a < 3; a++) {
+                String screenshotName = product.getPackageName() + a;
+                InputStream screenshotInputStream = getInputStream(screenshotName, product.getIconURL());
+                screenshotMap.put(screenshotName, screenshotInputStream);
+            }
+
+            applicationArtifact.setScreenshots(screenshotMap);
+            return applicationArtifact;
+        } catch (ApplicationManagementException e) {
+            String msg = "Error occurred while generating Application artifact";
+            log.error(msg);
+            throw new ApplicationManagementException(msg, e);
+        }
+    }
+
+    private static InputStream getInputStream(String filename, String url) throws ApplicationManagementException {
+        URL website;
+        try {
+            website = new URL(url);
+        } catch (MalformedURLException e) {
+            String msg = "Error occurred while converting the url " + url;
+            log.error(msg);
+            throw new ApplicationManagementException(msg, e);
+        }
+        ReadableByteChannel rbc = null;
+        FileOutputStream fos = null;
+        try {
+            rbc = Channels.newChannel(website.openStream());
+            fos = new FileOutputStream(System.getProperty("java.io.tmpdir")
+                    + File.separator + filename);
+            fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        } catch (IOException e) {
+            String msg = "Error occurred while opening stream for url " + url;
+            log.error(msg);
+            throw new ApplicationManagementException(msg, e);
+        } finally {
+            try {
+                fos.close();
+                rbc.close();
+            } catch (IOException e) {
+            }
+        }
+
+        File file = new File(System.getProperty("java.io.tmpdir") + File.separator + filename);
+        InputStream targetStream;
+        try {
+            targetStream = new FileInputStream(file);
+        } catch (FileNotFoundException e) {
+            String msg = "Error occurred while reading the tmp file  " + System.getProperty("java.io.tmpdir")
+                    + File.separator + filename;
+            log.error(msg);
+            throw new ApplicationManagementException(msg, e);
+        }
+        file.deleteOnExit();
+        return targetStream;
+    }
+
+    private static void updateImages(PublicAppReleaseWrapper appReleaseWrapper, String iconName,
+                                     InputStream iconStream, Map<String, InputStream>
+                                             screenshotsMaps) throws IOException {
+        List<Base64File> screenshots = new ArrayList<>();
+        Base64File iconFile = new Base64File(iconName,
+                convertStreamToBase64(iconStream));
+        appReleaseWrapper.setIcon(iconFile);
+        if (screenshotsMaps.size() > 0) {
+            for (Map.Entry<String, InputStream> screenshotEntry : screenshotsMaps.entrySet()) {
+                Base64File screenshot = new Base64File(screenshotEntry.getKey(),
+                        convertStreamToBase64(screenshotEntry.getValue()));
+                screenshots.add(screenshot);
+            }
+            appReleaseWrapper.setScreenshots(screenshots);
+        }
+    }
+
+    private static String convertStreamToBase64(InputStream inputStream) throws IOException {
+        final int bufLen = 4 * 0x400; // 4KB
+        byte[] buf = new byte[bufLen];
+        int readLen;
+
+        try {
+            try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
+                while ((readLen = inputStream.read(buf, 0, bufLen)) != -1)
+                    outputStream.write(buf, 0, readLen);
+
+                return Base64.getEncoder().encodeToString(outputStream.toByteArray());
+            }
+        } catch (IOException e) {
+            String msg = "Error while converting image to base64";
+            log.error(msg);
+            throw e;
+        } finally {
+            try {
+                inputStream.close();
+            } catch (IOException e) {
+            }
+        }
+    }
 }

components/application-mgt/io.entgra.device.mgt.core.application.mgt.core/src/main/java/io/entgra/device/mgt/core/application/mgt/core/util/Constants.java

@@ -109,10 +109,11 @@ public class Constants {
         public static final String POST = "POST";
         public static final String PUT = "PUT";
         public static final String DELETE = "DELETE";
-        public static final String CLIENT_USER_ID = "clientUserId";
         public static final String EVENT_ID = "eventId";
         public static final String CLIENT_USER_ID_PARAM = "?clientUserId=";
         public static final String TOTAL_PAGES = "totalPages";
+        public static final String GET_APP_DATA_RESPONSE_START = "results";
+        public static final String REMOTE_FILE_NAME = "512x512w.png";
 
         private VPP() {
         }
@@ -182,4 +183,29 @@ public class Constants {
         public static final String AUTHORIZATION = "Authorization";
         public static final String AUTHORIZATION_HEADER_VALUE = "Bearer ";
     }
+
+    public final class ApplicationProperties {
+        private ApplicationProperties() {
+            throw new AssertionError();
+        }
+
+        public static final String NAME = "name";
+        public static final String VERSION = "version";
+        public static final String FREE_SUB_METHOD = "FREE";
+        public static final String PAID_SUB_METHOD = "PAID";
+        public static final String TYPE = "type";;
+        public static final String PACKAGE_NAME = "packageName";
+        public static final String APPLE_STORE_SYNCED_APP_CATEGORY = "APPLE_STORE_SYNCED_APP";
+
+        public static final String RESULTS = "results";
+        public static final String ARTWORK = "artwork";
+        public static final String URL = "url";
+        public static final String DESCRIPTION = "description";
+        public static final String STANDARD = "standard";
+        public static final String OFFERS = "offers";
+        public static final String PRICE = "price";
+        public static final String DISPLAY = "display";
+        public static final String GENRE_NAMES = "genreNames";
+        public static final String PRICE_ZERO = "0.0";
+    }
 }