LQLiquidPackage.java

/**
 * Copyright 2014-present Liquid Data Intelligence S.A.
 *
 * Licensed 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.lqd.sdk.model;

import android.content.Context;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;

import io.lqd.sdk.LQLog;

public class LQLiquidPackage implements Serializable{

    private static final long serialVersionUID = 2252438865270376L;
    private static final String LIQUID_PACKAGE_FILENAME = "LiquidPackage";

    private ArrayList<LQValue> mValues = new ArrayList<LQValue>();

    public LQLiquidPackage() {

    }


    public LQLiquidPackage(JSONObject jsonObject) {
        try {
            JSONArray valuesJsonArray = jsonObject.getJSONArray("values");
            for(int index = 0; index < valuesJsonArray.length(); index ++){
                JSONObject valueJson = valuesJsonArray.getJSONObject(index);
                LQValue v = new LQValue(valueJson);
                mValues.add(v);
            }
        } catch (JSONException e) {
            LQLog.error("Parsing LQLiquidPackage: " + e.getMessage());
        }

    }

    public boolean isEmpty() {
        return (mValues.size() == 0);
    }

    public ArrayList<LQValue> getValues() {
        return mValues;
    }

    public boolean invalidateTargetFromVariableKey(String variableKey) {
        boolean invalidated = false;
        for(LQValue value : mValues) {
            if(value.getVariable().getName().equals(variableKey)) {
                if(value.getTargetId() == null) {
                    invalidated = invalidateValue(variableKey);
                } else {
                    invalidated = invalidateValuesOfTarget(value.getTargetId());
                }
            }
        }
        return invalidated;
    }

    private boolean invalidateValuesOfTarget(String targetId) {
        int valueItems = mValues.size();
        ArrayList<LQValue> tempvar =  new ArrayList<LQValue>();

        for(LQValue value : mValues) {
            if(!targetId.equals(value.getTargetId())) {
                tempvar.add(value);
                --valueItems;
            }
        }
        mValues = tempvar;
        return valueItems > 0;
    }

    private boolean invalidateValue(String variableKey) {
        int valueItems = mValues.size();
        ArrayList<LQValue> tempvar =  new ArrayList<LQValue>();

        for(LQValue value : mValues) {
            if(!value.getVariable().getName().equals(variableKey)) {
                tempvar.add(value);
                --valueItems;
            }
        }
        mValues = tempvar;
        return valueItems > 0;
    }

    public void saveToDisk(Context context) {
        LQLog.data("Saving to local storage");
        try {
            FileOutputStream fileOutputStream = context.openFileOutput(
                    LIQUID_PACKAGE_FILENAME + ".vars",
                    Context.MODE_PRIVATE);
            ObjectOutputStream objectOutputStream = new ObjectOutputStream(
                    fileOutputStream);
            objectOutputStream.writeObject(this);
            objectOutputStream.flush();
            objectOutputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
            LQLog.infoVerbose("Could not save liquid package to file");
        }
    }

    public static LQLiquidPackage loadFromDisk(Context context){
        LQLog.data("Loading from local storage");
        try {
            FileInputStream fileInputStream = context
                    .openFileInput(LIQUID_PACKAGE_FILENAME
                            + ".vars");
            ObjectInputStream objectInputStream = new ObjectInputStream(
                    fileInputStream);
            Object result = objectInputStream.readObject();
            objectInputStream.close();
            return (LQLiquidPackage) result;
        } catch (IOException e) {
            LQLog.infoVerbose("Could not load liquid package from file");
        } catch (ClassNotFoundException e) {
            LQLog.infoVerbose("Could not load liquid package from file");
        }
        return new LQLiquidPackage();
    }

}