/*
 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * 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.alibaba.csp.sentinel.dashboard.datasource.entity;

/**
 * @author Eric Zhao
 * @since 0.2.1
 */
public class SentinelVersion {

	private int majorVersion;

	private int minorVersion;

	private int fixVersion;

	private String postfix;

	public SentinelVersion() {
		this(0, 0, 0);
	}

	public SentinelVersion(int major, int minor, int fix) {
		this(major, minor, fix, null);
	}

	public SentinelVersion(int major, int minor, int fix, String postfix) {
		this.majorVersion = major;
		this.minorVersion = minor;
		this.fixVersion = fix;
		this.postfix = postfix;
	}

	/**
	 * 000, 000, 000
	 */
	public int getFullVersion() {
		return majorVersion * 1000000 + minorVersion * 1000 + fixVersion;
	}

	public int getMajorVersion() {
		return majorVersion;
	}

	public SentinelVersion setMajorVersion(int majorVersion) {
		this.majorVersion = majorVersion;
		return this;
	}

	public int getMinorVersion() {
		return minorVersion;
	}

	public SentinelVersion setMinorVersion(int minorVersion) {
		this.minorVersion = minorVersion;
		return this;
	}

	public int getFixVersion() {
		return fixVersion;
	}

	public SentinelVersion setFixVersion(int fixVersion) {
		this.fixVersion = fixVersion;
		return this;
	}

	public String getPostfix() {
		return postfix;
	}

	public SentinelVersion setPostfix(String postfix) {
		this.postfix = postfix;
		return this;
	}

	public boolean greaterThan(SentinelVersion version) {
		if (version == null) {
			return true;
		}
		return getFullVersion() > version.getFullVersion();
	}

	public boolean greaterOrEqual(SentinelVersion version) {
		if (version == null) {
			return true;
		}
		return getFullVersion() >= version.getFullVersion();
	}

	@Override
	public boolean equals(Object o) {
		if (this == o) {
			return true;
		}
		if (o == null || getClass() != o.getClass()) {
			return false;
		}

		SentinelVersion that = (SentinelVersion) o;

		if (getFullVersion() != that.getFullVersion()) {
			return false;
		}
		return postfix != null ? postfix.equals(that.postfix) : that.postfix == null;
	}

	@Override
	public int hashCode() {
		int result = majorVersion;
		result = 31 * result + minorVersion;
		result = 31 * result + fixVersion;
		result = 31 * result + (postfix != null ? postfix.hashCode() : 0);
		return result;
	}

	@Override
	public String toString() {
		return "SentinelVersion{" + "majorVersion=" + majorVersion + ", minorVersion=" + minorVersion + ", fixVersion="
				+ fixVersion + ", postfix='" + postfix + '\'' + '}';
	}

}
