/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * 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 com.android.vts.entity;

import com.android.vts.proto.VtsReportMessage.VtsProfilingRegressionMode;
import com.android.vts.proto.VtsReportMessage.VtsProfilingType;
import com.google.appengine.api.datastore.Entity;
import com.google.appengine.api.datastore.Key;
import com.google.appengine.api.datastore.KeyFactory;
import com.googlecode.objectify.annotation.Cache;
import com.googlecode.objectify.annotation.Id;
import com.googlecode.objectify.annotation.Ignore;
import com.googlecode.objectify.annotation.Index;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
import lombok.Data;
import lombok.NoArgsConstructor;

import static com.googlecode.objectify.ObjectifyService.ofy;

@com.googlecode.objectify.annotation.Entity(name = "ProfilingPoint")
@Cache
@Data
@NoArgsConstructor
/** Entity describing a profiling point. */
public class ProfilingPointEntity implements DashboardEntity {
    protected static final Logger logger = Logger.getLogger(ProfilingPointEntity.class.getName());
    protected static final String DELIMITER = "#";

    public static final String KIND = "ProfilingPoint";

    // Property keys
    public static final String TEST_NAME = "testName";
    public static final String PROFILING_POINT_NAME = "profilingPointName";
    public static final String TYPE = "type";
    public static final String REGRESSION_MODE = "regressionMode";
    public static final String X_LABEL = "xLabel";
    public static final String Y_LABEL = "yLabel";

    @Ignore
    private Key key;

    /** ProfilingPointEntity testName field */
    @Id
    private String name;

    /** ProfilingPointEntity profilingPointName field */
    @Index
    private String profilingPointName;

    /** ProfilingPointEntity testName field */
    @Index
    private String testName;

    /** ProfilingPointEntity type field */
    private int type;

    /** ProfilingPointEntity regressionMode field */
    private int regressionMode;

    /** ProfilingPointEntity xLabel field */
    private String xLabel;

    /** ProfilingPointEntity xLabel field */
    private String yLabel;

    /**
     * When this record was created or updated
     */
    @Index
    Date updated;

    /**
     * Create a ProfilingPointEntity object.
     *
     * @param testName The name of test containing the profiling point.
     * @param profilingPointName The name of the profiling point.
     * @param type The (number) type of the profiling point data.
     * @param regressionMode The (number) mode to use for detecting regression.
     * @param xLabel The x axis label.
     * @param yLabel The y axis label.
     */
    public ProfilingPointEntity(
            String testName,
            String profilingPointName,
            int type,
            int regressionMode,
            String xLabel,
            String yLabel) {
        this.key = createKey(testName, profilingPointName);
        this.testName = testName;
        this.profilingPointName = profilingPointName;
        this.type = type;
        this.regressionMode = regressionMode;
        this.xLabel = xLabel;
        this.yLabel = yLabel;
        this.updated = new Date();
    }

    /**
     * Get VtsProfilingType from int value.
     *
     * @return VtsProfilingType class.
     */
    public VtsProfilingType getVtsProfilingType(int type) {
        return VtsProfilingType.forNumber(type);
    }

    /**
     * Get VtsProfilingRegressionMode from int value.
     *
     * @return VtsProfilingType class.
     */
    public VtsProfilingRegressionMode getVtsProfilingRegressionMode(int regressionMode) {
        return VtsProfilingRegressionMode.forNumber(regressionMode);
    }

    /**
     * Create a key for a ProfilingPointEntity.
     *
     * @param testName The name of test containing the profiling point.
     * @param profilingPointName The name of the profiling point.
     * @return a Key object for the ProfilingEntity in the database.
     */
    public static Key createKey(String testName, String profilingPointName) {
        return KeyFactory.createKey(KIND, testName + DELIMITER + profilingPointName);
    }

    /** Saving function for the instance of this class */
    @Override
    public com.googlecode.objectify.Key<ProfilingPointEntity> save() {
        return ofy().save().entity(this).now();
    }

    public Entity toEntity() {
        Entity profilingPoint = new Entity(key);
        profilingPoint.setIndexedProperty(TEST_NAME, this.testName);
        profilingPoint.setIndexedProperty(PROFILING_POINT_NAME, this.profilingPointName);
        profilingPoint.setUnindexedProperty(TYPE, this.type);
        profilingPoint.setUnindexedProperty(REGRESSION_MODE, this.regressionMode);
        profilingPoint.setUnindexedProperty(X_LABEL, this.xLabel);
        profilingPoint.setUnindexedProperty(Y_LABEL, this.yLabel);

        return profilingPoint;
    }

    /**
     * Convert an Entity object to a ProfilingPointEntity.
     *
     * @param e The entity to process.
     * @return ProfilingPointEntity object with the properties from e, or null if incompatible.
     */
    @SuppressWarnings("unchecked")
    public static ProfilingPointEntity fromEntity(Entity e) {
        if (!e.getKind().equals(KIND)
                || e.getKey().getName() == null
                || !e.hasProperty(TEST_NAME)
                || !e.hasProperty(PROFILING_POINT_NAME)
                || !e.hasProperty(TYPE)
                || !e.hasProperty(REGRESSION_MODE)
                || !e.hasProperty(X_LABEL)
                || !e.hasProperty(Y_LABEL)) {
            logger.log(
                    Level.WARNING, "Missing profiling point attributes in entity: " + e.toString());
            return null;
        }
        try {
            String testName = (String) e.getProperty(TEST_NAME);
            String profilingPointName = (String) e.getProperty(PROFILING_POINT_NAME);
            int type = (int) (long) e.getProperty(TYPE);
            int regressionMode = (int) (long) e.getProperty(REGRESSION_MODE);
            String xLabel = (String) e.getProperty(X_LABEL);
            String yLabel = (String) e.getProperty(Y_LABEL);

            return new ProfilingPointEntity(
                    testName, profilingPointName, type, regressionMode, xLabel, yLabel);
        } catch (ClassCastException exception) {
            // Invalid cast
            logger.log(Level.WARNING, "Error parsing profiling point entity.", exception);
        }
        return null;
    }
}