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package in.shop2020.serving.controllers;
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import in.shop2020.model.v1.user.UserContextService;
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import in.shop2020.model.v1.user.WidgetException;
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import in.shop2020.serving.utils.FileUtils;
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import in.shop2020.serving.utils.Utils;
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import in.shop2020.thrift.clients.UserContextServiceClient;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import org.apache.log4j.Logger;
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import org.apache.thrift.TException;
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import org.json.JSONArray;
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import org.json.JSONException;
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public class BrowseHistoryController extends BaseController{
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	private static Logger log = Logger.getLogger(BrowseHistoryController.class);
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	private static final long serialVersionUID = -5508838941749125824L;
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	private String id;
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	private String snippets="";
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	private List<String> items;
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	private String itemsInJson;
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	public String index() {
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		return "index";
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	}
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	// GET browse-history/[1,2,3]
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	public String show() {
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		return "show";
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	}
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	//Handle POST /browse-history/{id}
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	public String create(){
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		log.info("list of item ids is " + items);
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		if (items != null) {
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			if(userinfo.getUserId() != -1){
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				updateHistory(items);
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			}
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		}
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		try {
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            JSONArray itemsJson =  new JSONArray();
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            UserContextServiceClient userServiceClient = new UserContextServiceClient();
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            UserContextService.Client userClient = userServiceClient.getClient();
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            List<Long> widgetItemIds = userClient.getBrowseHistoryItems(userinfo.getUserId());
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            for (Long itemId : widgetItemIds) {
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                itemsJson.put(itemId);
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            }
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            itemsInJson = itemsJson.toString();
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        } catch (WidgetException e) {
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            log.error("Unable to create the browse history widget because of: ", e);
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        } catch (TException e) {
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            log.error("Unable to create the browse history widget because of: ", e);
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        } catch (Exception e) {
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            log.error("Unable to create the browse history widget because of: ", e);
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        }
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        return "success";
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	}
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    public String getSnippets() {
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    	if(items != null){
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	    	for(String itemId: items){
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	    	    try {
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				    snippets = snippets + FileUtils.read( Utils.EXPORT_ENTITIES_PATH + itemId + File.separator +"WidgetSnippet.html");
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	    	    }
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	    	    catch (FileNotFoundException e) {
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                    log.error(e.getMessage());
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                }
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	    	    catch (IOException e) {
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                    log.error(e.getMessage());
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                }
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			}
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    	}
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		return snippets;
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    }
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    public void setId(String itemsString) {
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        JSONArray itemJson = null;
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        items = new ArrayList<String>();
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        try {
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            itemJson = new JSONArray(itemsString);
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        } catch (JSONException e) {
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            log.error("Bad json : " + itemsString);
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            return;
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        }
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        for (int i=0; i<itemJson.length(); i++) {
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            try {
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                items.add(itemJson.getString(i));
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            } catch (JSONException e) {
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                log.error("Bad item at index : " + i);
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            }
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        }
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    }
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    public String getId() {
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    	return this.id;
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    }
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    public String getItemsInJson() {
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        return this.itemsInJson;
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    }
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    private void updateHistory(List<String> historyItems) {
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		UserContextServiceClient userServiceClient;
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		try {
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			userServiceClient = new UserContextServiceClient();
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			UserContextService.Client userClient = userServiceClient.getClient();
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			for (String item : historyItems) {
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				long itemId = Long.parseLong(item);
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				userClient.updateBrowseHistory(userinfo.getUserId(), itemId);
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			}
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		} catch (Exception e) {
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		    log.error("Unable to update the browse history because of: ", e);
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		}
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	}
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}