package com.ssi.response;

import com.ssi.constant.enums.Status;
import lombok.Setter;

import java.io.Serializable;

/**
 * 返回数据
 */
public class SSIResponse<T> implements Serializable {

    private Status status;

    @Setter
    private String msg;

    private T data;

    public T getData() {
        return data;
    }

    public SSIResponse<T> setData(T data) {
        this.data = data;
        return this;
    }

    public int getCode() {
        return status.getCode();
    }

    public String getMsg() {
        if (msg == null) {
            return status.getDescript();
        }
        return msg;
    }

    protected SSIResponse(Status status) {
        this.status = status;
    }

    protected SSIResponse() {
    }

    // ----------------- 静态方法 -----------------------

    public static <T> SSIResponse<T> ok() {
        return ok(null);
    }


    public static <T> SSIResponse<T> ok(T data) {
        final SSIResponse<T> ok = new SSIResponse<>(Status.SUCCESS);
        ok.setData(data);
        return ok;
    }

    public static <T> SSIResponse<T> haveMsgOk(String msg) {
        final SSIResponse<T> ok = new SSIResponse<>(Status.SUCCESS);
        ok.setMsg(msg);
        return ok;
    }

    public static <T> SSIResponse<T> no(Status status) {
        if (status.equals(Status.SUCCESS)) {
            throw new IllegalArgumentException("只能传递异常的Status");
        }
        return new SSIResponse<>(status);
    }

    public static <T> SSIResponse<T> no(Status status, String message) {
        final SSIResponse<T> no = SSIResponse.no(status);
        no.setMsg(message);
        return no;
    }

    public static <T> SSIResponse<T> no(String message) {
        // 使用什么status实例不影响,除了code值不一样
        return SSIResponse.no(Status.ERROR, message);
    }

}