package im.zhaojun.zfile.core.util;

import io.swagger.annotations.ApiModelProperty;

import java.io.Serializable;

/**
 * ajax 请求返回 JSON 格式数据的封装
 *
 * @author zhaojun
 */
public class AjaxJson<T> implements Serializable {

	private static final long serialVersionUID = 1L;    // 序列化版本号

	public static final int CODE_SUCCESS = 0;            // 成功状态码
	public static final int CODE_ERROR = 500;            // 错误状态码
	public static final int CODE_WARNING = 501;            // 警告状态码
	public static final int CODE_NOT_JUR = 403;            // 无权限状态码
	public static final int CODE_NOT_LOGIN = 401;        // 未登录状态码
	public static final int CODE_INVALID_REQUEST = 400;    // 无效请求状态码
	public static final int REQUIRED_PASSWORD = 405;       // 未输入密码
	public static final int INVALID_PASSWORD = 406;        // 无效的密码

	@ApiModelProperty(value = "业务状态码，0 为正常，其他值均为异常，异常情况下见响应消息", example = "0")
	private final int code;

	@ApiModelProperty(value = "响应消息", example = "ok")
	private String msg;

	@ApiModelProperty(value = "响应数据")
	private T data;

	@ApiModelProperty(value = "数据总条数，分页情况有效")
	private final Long dataCount;
	
	@ApiModelProperty(value = "跟踪 ID")
	private String traceId;

	/**
	 * 返回code
	 */
	public int getCode() {
		return this.code;
	}


	/**
	 * 给 msg 赋值，连缀风格
	 */
	public AjaxJson<T> setMsg(String msg) {
		this.msg = msg;
		return this;
	}


	public String getMsg() {
		return this.msg;
	}


	/**
	 * 给data赋值，连缀风格
	 */
	public AjaxJson<T> setData(T data) {
		this.data = data;
		return this;
	}

	// ============================  构建  ==================================

	public AjaxJson(int code, String msg, T data) {
		this.code = code;
		this.msg = msg;
		this.data = data;
		this.dataCount = null;
	}


	public AjaxJson(int code, String msg, T data, Long dataCount) {
		this.code = code;
		this.msg = msg;
		this.data = data;
		this.dataCount = dataCount;
	}


	// 返回成功
	public static AjaxJson<Void> getSuccess() {
		return new AjaxJson<>(CODE_SUCCESS, "ok", null, null);
	}


	public static AjaxJson<Void> getSuccess(String msg) {
		return new AjaxJson<>(CODE_SUCCESS, msg, null, null);
	}


	public static AjaxJson<?> getSuccess(String msg, Object data) {
		return new AjaxJson<>(CODE_SUCCESS, msg, data, null);
	}


	public static <T> AjaxJson<T> getSuccessData(T data) {
		return new AjaxJson<>(CODE_SUCCESS, "ok", data, null);
	}


	public static AjaxJson<?> getSuccessArray(Object... data) {
		return new AjaxJson<>(CODE_SUCCESS, "ok", data, null);
	}


	// 返回失败
	public static AjaxJson<?> getError() {
		return new AjaxJson<>(CODE_ERROR, "error", null, null);
	}


	public static AjaxJson<String> getError(String msg) {
		return new AjaxJson<>(CODE_ERROR, msg, null, null);
	}


	public static AjaxJson<String> getBadRequestError(String msg) {
		return new AjaxJson<>(CODE_INVALID_REQUEST, msg, null, null);
	}


	// 返回警告
	public static AjaxJson<?> getWarning() {
		return new AjaxJson<>(CODE_ERROR, "warning", null, null);
	}


	public static AjaxJson<?> getWarning(String msg) {
		return new AjaxJson<>(CODE_WARNING, msg, null, null);
	}


	// 返回未登录
	public static AjaxJson<?> getNotLogin() {
		return new AjaxJson<>(CODE_NOT_LOGIN, "未登录，请登录后再次访问", null, null);
	}


	// 返回没有权限的
	public static AjaxJson<?> getNotJur(String msg) {
		return new AjaxJson<>(CODE_NOT_JUR, msg, null, null);
	}


	// 返回一个自定义状态码的
	public static AjaxJson<?> get(int code, String msg) {
		return new AjaxJson<>(code, msg, null, null);
	}


	// 返回分页和数据的
	public static AjaxJson<?> getPageData(Long dataCount, Object data) {
		return new AjaxJson<>(CODE_SUCCESS, "ok", data, dataCount);
	}


	// 返回，根据布尔值来确定最终结果的  (true=ok，false=error)
	public static AjaxJson<?> getByBoolean(boolean b) {
		return b ? getSuccess("ok") : getError("error");
	}
	
	
	@Override
	public String toString() {
		return "AjaxJson{" +
				"code=" + code +
				", msg='" + msg + '\'' +
				", data=" + data +
				", dataCount=" + dataCount +
				", traceId='" + traceId + '\'' +
				'}';
	}
	
	public T getData() {
		return data;
	}


	public Long getDataCount() {
		return dataCount;
	}
	
	public void setTraceId(String traceId) {
		this.traceId = traceId;
	}
	
	public String getTraceId() {
		return traceId;
	}
}