/*
 * Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 * WSO2 Inc. 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 org.wso2.carbon.event.simulator.core.internal.generator.random.util;

import org.joda.time.DateTime;
import org.json.JSONObject;
import org.wso2.carbon.event.simulator.core.exception.InvalidConfigException;
import org.wso2.carbon.event.simulator.core.internal.bean.PropertyBasedAttributeDTO;
import org.wso2.carbon.event.simulator.core.internal.generator.random.RandomAttrGenAbstractImpl;
import org.wso2.carbon.event.simulator.core.internal.generator.random.RandomAttributeGenerator;
import org.wso2.carbon.event.simulator.core.internal.util.EventSimulatorConstants;
import org.wso2.carbon.stream.processor.common.exception.ResourceNotFoundException;
import org.wso2.siddhi.query.api.definition.Attribute;

import fabricator.Calendar;
import fabricator.Contact;
import fabricator.Fabricator;
import fabricator.Finance;
import fabricator.Internet;
import fabricator.Location;
import fabricator.Words;
import fabricator.enums.DateFormat;

import java.security.SecureRandom;

import static org.wso2.carbon.event.simulator.core.internal.util.CommonOperations.checkAvailability;


/**
 * PropertyBasedAttrGenerator class is responsible for generating attribute values for a given property type
 */
public class PropertyBasedAttrGenerator extends RandomAttrGenAbstractImpl {

//    Initialize contact to generate contact related data
    private static final Contact contact = Fabricator.contact();

//    Initialize calendar to generate calendar related data
    private static final Calendar calendar = Fabricator.calendar();

//    Initialize Finance to generate finance related data
    private static final Finance finance = Fabricator.finance();

//    Initialize internet to generate internet related data
    private static final Internet internet = Fabricator.internet();

//    Initialize location to generate location related data
    private static final Location location = Fabricator.location();

//    Initialize words to generate words related data
    private static final Words words = Fabricator.words();

    private PropertyBasedAttributeDTO propertyBasedAttrConfig = new PropertyBasedAttributeDTO();

    public PropertyBasedAttrGenerator() {

    }

    /**
     * validateAttributeConfiguration() validates the attribute configuration provided for property base attribute
     * generation
     *
     * @param attributeConfig the attribute configuration for property based attribute generation
     * @throws InvalidConfigException if the attribute configuration contains an invalid propertyType
     */
    @Override
    public void validateAttributeConfiguration(Attribute.Type attributeType, JSONObject attributeConfig)
            throws InvalidConfigException {
        if (checkAvailability(attributeConfig, EventSimulatorConstants.PROPERTY_BASED_ATTRIBUTE_PROPERTY)) {
            String propertyType = attributeConfig
                    .getString(EventSimulatorConstants.PROPERTY_BASED_ATTRIBUTE_PROPERTY);
            try {
                PropertyType.valueOf(propertyType);
                propertyBasedAttrConfig.setProperty(PropertyType.valueOf(propertyType));
                DataParser.parse(attributeType, generateAttribute());
            } catch (NumberFormatException e) {
                throw new InvalidConfigException(
                                ResourceNotFoundException.ResourceType.RANDOM_SIMULATION,
                                attributeConfig.getString(EventSimulatorConstants.ATTRIBUTE_CONFIGURATION),
                                "Property type '" + propertyType + "' cannot be parsed to " +
                                "attribute type '" + attributeType + "'. Invalid " +
                                "attribute configuration provided : " + attributeConfig.toString());
            }
        } else {
            throw new InvalidConfigException(
                            ResourceNotFoundException.ResourceType.RANDOM_SIMULATION,
                            attributeConfig.getString(EventSimulatorConstants.ATTRIBUTE_CONFIGURATION),
                            "Property value is required for " +
                            RandomAttributeGenerator.RandomDataGeneratorType.PROPERTY_BASED +
                            " attribute generation. Invalid attribute configuration provided : " +
                            attributeConfig.toString());
        }
    }

    /**
     * createRandomAttributeDTO() creates PropertyBasedAttributeDTO using the attribute configuration provided
     *
     * @param attributeConfig attribute configuration for property based attribute generation
     */
    @Override
    public void createRandomAttributeDTO(JSONObject attributeConfig) {
        propertyBasedAttrConfig.setProperty(PropertyType.valueOf(attributeConfig
                .getString(EventSimulatorConstants.PROPERTY_BASED_ATTRIBUTE_PROPERTY)));
    }

    /**
     * generateAttribute() generated an attribute value based on the property specified in the
     * propertyBasedAttributeDto configuration
     *
     * @return attribute value generated based on the property value
     */
    @Override
    public Object generateAttribute() {
        Object dataValue = null;
        switch (propertyBasedAttrConfig.getProperty()) {
            case TIME_12H:
                dataValue = calendar.time12h();
                break;
            case TIME_24H:
                dataValue = calendar.time24h();
                break;
            case SECOND:
                dataValue = calendar.second();
                break;
            case MINUTE:
                dataValue = calendar.minute();
                break;
            case MONTH:
                dataValue = calendar.month();
                break;
            case MONTH_NUM:
                dataValue = calendar.month(true);
                break;
            case YEAR:
                dataValue = calendar.year();
                break;
            case DAY:
                dataValue = calendar.day();
                break;
            case DAY_OF_WEEK:
                dataValue = calendar.dayOfWeek();
                break;
            case DATE:
                SecureRandom random = new SecureRandom();
                int incrementValue = random.nextInt(10);
                dataValue = calendar.relativeDate(DateTime.now().plusDays(incrementValue)).
                        asString(DateFormat.dd_MM_yyyy_H_m_s_a);
                break;
            case FULL_NAME:
                dataValue = contact.fullName(true, true);
                break;
            case FIRST_NAME:
                dataValue = contact.firstName();
                break;
            case LAST_NAME:
                dataValue = contact.lastName();
                break;
            case BSN:
                dataValue = contact.bsn();
                break;
            case ADDRESS:
                dataValue = contact.address();
                break;
            case EMAIL:
                dataValue = contact.eMail();
                break;
            case PHONE_NUM:
                dataValue = contact.phoneNumber();
                break;
            case POST_CODE:
                dataValue = contact.postcode();
                break;
            case STATE:
                dataValue = contact.state();
                break;
            case CITY:
                dataValue = contact.city();
                break;
            case COMPANY:
                dataValue = contact.company();
                break;
            case COUNTRY:
                dataValue = contact.country();
                break;
            case STREET_NAME:
                dataValue = contact.streetName();
                break;
            case HOUSE_NO:
                dataValue = contact.houseNumber();
                break;
            case HEIGHT_CM:
                dataValue = contact.height(true);
                break;
            case HEIGHT_M:
                dataValue = contact.height(false);
                break;
            case WEIGHT:
                dataValue = contact.weight(true);
                break;
            case OCCUPATION:
                dataValue = contact.occupation();
                break;
            case IBAN:
                dataValue = finance.iban();
                break;
            case BIC:
                dataValue = finance.bic();
                break;
            case VISA_CARD:
                dataValue = finance.visaCard();
                break;
            case PIN_CODE:
                dataValue = finance.pinCode();
                break;
            case URL:
                dataValue = internet.urlBuilder();
                break;
            case IP:
                dataValue = internet.ip();
                break;
            case IP_V6:
                dataValue = internet.ipv6();
                break;
            case MAC_ADDRESS:
                dataValue = internet.macAddress();
                break;
            case UUID:
                dataValue = internet.UUID();
                break;
            case COLOUR:
                dataValue = internet.color();
                break;
            case USERNAME:
                dataValue = internet.username();
                break;
            case ALTITUDE:
                dataValue = location.altitude();
                break;
            case DEPTH:
                dataValue = location.depth();
                break;
            case COORDINATES:
                dataValue = location.coordinates();
                break;
            case LATITUDE:
                dataValue = location.latitude();
                break;
            case LONGITUDE:
                dataValue = location.longitude();
                break;
            case GEO_HASH:
                dataValue = location.geohash();
                break;
            case WORDS:
                dataValue = words.word();
                break;
            case PARAGRAPH:
                dataValue = words.paragraph();
                break;
            case SENTENCE:
                dataValue = words.sentence();
                break;
        }
        return dataValue;
    }

    @Override
    public String getAttributeConfiguration() {
        return propertyBasedAttrConfig.toString();
    }

    /**
     * Property enum specifies the attributes that can be randomly generates using the random data generator library
     */
    public enum PropertyType {
        TIME_12H, TIME_24H, SECOND, MINUTE, MONTH, MONTH_NUM, YEAR, DAY, DAY_OF_WEEK, DATE, FULL_NAME, FIRST_NAME,
        LAST_NAME, WORDS, BSN, ADDRESS, EMAIL, PHONE_NUM, POST_CODE, STATE, CITY, COMPANY, COUNTRY,
        STREET_NAME, HOUSE_NO, HEIGHT_CM, HEIGHT_M, WEIGHT, OCCUPATION, IBAN, BIC, VISA_CARD, PIN_CODE, URL, IP, IP_V6,
        MAC_ADDRESS, UUID, USERNAME, COLOUR, ALTITUDE, DEPTH, COORDINATES, LATITUDE, LONGITUDE, GEO_HASH, SENTENCE,
        PARAGRAPH
    }
}
