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/*
 * Copyright (c) 2008-2024, Hazelcast, Inc. All Rights Reserved.
 *
 * 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.hazelcast.config;

import com.hazelcast.internal.util.MapUtil;
import com.hazelcast.spi.discovery.DiscoveryStrategyFactory;

import javax.annotation.Nonnull;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;

import static com.hazelcast.internal.util.Preconditions.checkHasText;
import static com.hazelcast.internal.util.Preconditions.checkNotNull;

/**
 * This configuration class describes a {@link com.hazelcast.spi.discovery.DiscoveryStrategy}
 * based on a parsed XML or configured manually using the config API
 */
public class DiscoveryStrategyConfig {
    private String className;
    // we skip serialization since this may be a user-supplied object, and
    // it may not be serializable. Since we send the WAN config in the
    // FinalizeJoinOp, this may prevent a node from sending it to a joining
    // member
    private transient DiscoveryStrategyFactory discoveryStrategyFactory;
    private Map properties;

    public DiscoveryStrategyConfig() {
        properties = MapUtil.createHashMap(1);
    }

    public DiscoveryStrategyConfig(String className) {
        this(className, Collections.emptyMap());
    }

    public DiscoveryStrategyConfig(String className,
                                   Map properties) {
        this.className = className;
        this.properties = properties == null
                ? MapUtil.createHashMap(1)
                : new HashMap<>(properties);
        this.discoveryStrategyFactory = null;
    }


    public DiscoveryStrategyConfig(DiscoveryStrategyFactory discoveryStrategyFactory) {
        this(discoveryStrategyFactory, Collections.emptyMap());
    }

    public DiscoveryStrategyConfig(DiscoveryStrategyFactory discoveryStrategyFactory, Map properties) {
        this.className = null;
        this.properties = properties == null
                ? MapUtil.createHashMap(1)
                : new HashMap<>(properties);
        this.discoveryStrategyFactory = discoveryStrategyFactory;
    }

    public DiscoveryStrategyConfig(DiscoveryStrategyConfig config) {
        className = config.className;
        discoveryStrategyFactory = config.discoveryStrategyFactory;
        properties = new HashMap<>(config.properties);
    }

    public String getClassName() {
        return className;
    }

    public DiscoveryStrategyConfig setClassName(@Nonnull String className) {
        this.className = checkHasText(className, "Discovery strategy factory class name must contain text");
        this.discoveryStrategyFactory = null;
        return this;
    }

    public DiscoveryStrategyConfig setDiscoveryStrategyFactory(@Nonnull DiscoveryStrategyFactory discoveryStrategyFactory) {
        this.discoveryStrategyFactory = checkNotNull(discoveryStrategyFactory, "Discovery strategy factory cannot be null!");
        this.className = null;
        return this;
    }

    public DiscoveryStrategyFactory getDiscoveryStrategyFactory() {
        return discoveryStrategyFactory;
    }

    public DiscoveryStrategyConfig addProperty(String key, Comparable value) {
        properties.put(key, value);
        return this;
    }

    public DiscoveryStrategyConfig removeProperty(String key) {
        properties.remove(key);
        return this;
    }

    public DiscoveryStrategyConfig setProperties(Map properties) {
        this.properties = properties == null
                ? MapUtil.createHashMap(1)
                : new HashMap<>(properties);
        return this;
    }

    public Map getProperties() {
        return properties;
    }

    @Override
    public String toString() {
        return "DiscoveryStrategyConfig{"
                + "properties=" + properties
                + ", className='" + className + '\''
                + ", discoveryStrategyFactory=" + discoveryStrategyFactory
                + '}';
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        DiscoveryStrategyConfig that = (DiscoveryStrategyConfig) o;
        return Objects.equals(className, that.className) && Objects.equals(properties, that.properties);
    }

    @Override
    public int hashCode() {
        return Objects.hash(className, properties);
    }
}