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package ars.invoke.remote;

import java.util.Arrays;

import ars.util.Beans;
import ars.util.Strings;
import ars.invoke.Resource;

/**
 * 远程资源端点
 *
 * @author wuyongqiang
 */
public class Endpoint implements Resource {
    private static final long serialVersionUID = 1L;

    private String uri; // 资源地址
    private Node[] nodes; // 节点数组

    public Endpoint(Node... nodes) {
        this(null, nodes);
    }

    public Endpoint(String uri, Node... nodes) {
        if (nodes == null || nodes.length == 0) {
            throw new IllegalArgumentException("Nodes must not be empty");
        }
        this.uri = uri;
        this.nodes = nodes;
    }

    public Endpoint(int port) {
        this(port, null);
    }

    public Endpoint(int port, String uri) {
        this(Protocol.tcp, port, uri);
    }

    public Endpoint(Protocol protocol, int port) {
        this(protocol, port, null);
    }

    public Endpoint(Protocol protocol, int port, String uri) {
        this(protocol, Strings.DEFAULT_LOCALHOST_ADDRESS, port, uri);
    }

    public Endpoint(String host, int port) {
        this(host, port, null);
    }

    public Endpoint(String host, int port, String uri) {
        this(Protocol.tcp, host, port, uri);
    }

    public Endpoint(Protocol protocol, String host, int port) {
        this(protocol, host, port, null);
    }

    public Endpoint(Protocol protocol, String host, int port, String uri) {
        this(uri, new Node(protocol, host, port));
    }

    public String getUri() {
        return uri;
    }

    public Node[] getNodes() {
        return nodes;
    }

    @Override
    public int hashCode() {
        int code = 1;
        code = 31 * code + this.uri == null ? 0 : this.uri.hashCode();
        for (Node node : this.nodes) {
            code = 31 * code + node.hashCode();
        }
        return code;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        } else if (obj == null || !(obj instanceof Endpoint)) {
            return false;
        }
        Endpoint endpoint = (Endpoint) obj;
        return Beans.isEqual(this.nodes, endpoint.getNodes()) && (this.uri == null && endpoint.getUri() == null
            || (this.uri != null && this.uri.equals(endpoint.getUri())));
    }

    @Override
    public String toString() {
        StringBuilder buffer = new StringBuilder(Arrays.toString(this.nodes));
        return this.uri == null ? buffer.toString() : buffer.append(':').append(this.uri).toString();
    }

}