/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.apache.tomcat.util.descriptor.web;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;


/**
 * Representation of a Context element.
 */
public class ResourceBase implements Serializable, Injectable {
    /**
     * Default constructor.
     */
    public ResourceBase() {
    }

    private static final long serialVersionUID = 1L;


    // ------------------------------------------------------------- Properties

    /**
     * The description of this resource.
     */
    private String description = null;

    /**
     * Return the description of this resource.
     *
     * @return The description of this resource
     */
    public String getDescription() {
        return this.description;
    }

    /**
     * Set the description of this resource.
     *
     * @param description The description of this resource
     */
    public void setDescription(String description) {
        this.description = description;
    }


    /**
     * The name of this resource.
     */
    private String name = null;

    @Override
    public String getName() {
        return this.name;
    }

    /**
     * Set the name of this resource.
     *
     * @param name The name of this resource
     */
    public void setName(String name) {
        this.name = name;
    }


    /**
     * The name of the resource implementation class.
     */
    private String type = null;

    /**
     * Return the name of the resource implementation class.
     *
     * @return The name of the resource implementation class
     */
    public String getType() {
        return this.type;
    }

    /**
     * Set the name of the resource implementation class.
     *
     * @param type The name of the resource implementation class
     */
    public void setType(String type) {
        this.type = type;
    }


    /**
     * The JNDI lookup name for this resource.
     */
    private String lookupName = null;

    /**
     * Return the JNDI lookup name for this resource.
     *
     * @return The JNDI lookup name
     */
    public String getLookupName() {
        return lookupName;
    }

    /**
     * Set the JNDI lookup name for this resource.
     *
     * @param lookupName The JNDI lookup name
     */
    public void setLookupName(String lookupName) {
        if (lookupName == null || lookupName.isEmpty()) {
            this.lookupName = null;
            return;
        }
        this.lookupName = lookupName;
    }


    /**
     * Holder for our configured properties.
     */
    private final Map<String,Object> properties = new HashMap<>();

    /**
     * Returns the value of the specified property.
     *
     * @param name The property name
     * @return the configured property value
     */
    public Object getProperty(String name) {
        return properties.get(name);
    }

    /**
     * Set a configured property.
     *
     * @param name  The property name
     * @param value The property value
     */
    public void setProperty(String name, Object value) {
        properties.put(name, value);
    }

    /**
     * Remove a configured property.
     *
     * @param name The property name
     */
    public void removeProperty(String name) {
        properties.remove(name);
    }

    /**
     * List properties.
     *
     * @return the property names iterator
     */
    public Iterator<String> listProperties() {
        return properties.keySet().iterator();
    }

    /**
     * The list of injection targets for this resource.
     */
    private final List<InjectionTarget> injectionTargets = new ArrayList<>();

    @Override
    public void addInjectionTarget(String injectionTargetName, String jndiName) {
        InjectionTarget target = new InjectionTarget(injectionTargetName, jndiName);
        injectionTargets.add(target);
    }

    @Override
    public List<InjectionTarget> getInjectionTargets() {
        return injectionTargets;
    }


    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((description == null) ? 0 : description.hashCode());
        result = prime * result + injectionTargets.hashCode();
        result = prime * result + ((name == null) ? 0 : name.hashCode());
        result = prime * result + properties.hashCode();
        result = prime * result + ((type == null) ? 0 : type.hashCode());
        result = prime * result + ((lookupName == null) ? 0 : lookupName.hashCode());
        return result;
    }


    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        ResourceBase other = (ResourceBase) obj;
        if (description == null) {
            if (other.description != null) {
                return false;
            }
        } else if (!description.equals(other.description)) {
            return false;
        }
        if (!injectionTargets.equals(other.injectionTargets)) {
            return false;
        }
        if (name == null) {
            if (other.name != null) {
                return false;
            }
        } else if (!name.equals(other.name)) {
            return false;
        }
        if (!properties.equals(other.properties)) {
            return false;
        }
        if (type == null) {
            if (other.type != null) {
                return false;
            }
        } else if (!type.equals(other.type)) {
            return false;
        }
        if (lookupName == null) {
            return other.lookupName == null;
        } else {
            return lookupName.equals(other.lookupName);
        }
    }


    /**
     * The NamingResources with which we are associated (if any).
     */
    private NamingResources resources = null;

    /**
     * Return the NamingResources with which this resource is associated.
     *
     * @return The NamingResources with which this resource is associated
     */
    public NamingResources getNamingResources() {
        return this.resources;
    }

    /**
     * Set the NamingResources with which this resource is associated.
     *
     * @param resources The NamingResources with which this resource is associated
     */
    public void setNamingResources(NamingResources resources) {
        this.resources = resources;
    }
}
