package com.ots.project.exam.dto;

import com.ots.common.enums.ResponseCode;
import com.ots.common.enums.SystemCode;
import com.ots.project.common.exception.BaseException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.dao.DuplicateKeyException;

/**
 * @author Shawn
 */
@Slf4j
public class RestResponse<T> {
    private int code;
    private String message;
    private T response;

    public RestResponse(int code, String message) {
        this.code = code;
        this.message = message;
    }

    public RestResponse(int code, String message, T response) {
        this.code = code;
        this.message = message;
        this.response = response;
    }

    public static RestResponse fail(Integer code, String msg) {
        return new RestResponse<>(code, msg);
    }

    /**
     * 增加错误编码统一处理
     *
     * @param enumCode
     * @return
     */
    public static RestResponse fail(ResponseCode enumCode) {
        return new RestResponse<>(enumCode.getCode(), enumCode.getMessage());
    }

    /**
     * 异常结合枚举方便异常统一处理
     *
     * @param e
     * @return
     */
    public static RestResponse fail(Exception e) {
        if (e instanceof BaseException) {
            BaseException e1 = (BaseException) e;
            return new RestResponse<>(e1.getResponseEnum().getCode(), e1.getMessage());
        } else if (e instanceof DuplicateKeyException) {
            log.error("DuplicateKeyException：", e);
            return new RestResponse<>(998, "复合索引冲突，数据不能重复提交！");
        } else {
            return new RestResponse<>(999, e.getMessage());
        }
    }

    public static RestResponse ok() {
        SystemCode systemCode = SystemCode.OK;
        return new RestResponse<>(systemCode.getCode(), systemCode.getMessage());
    }

    public static <F> RestResponse<F> ok(F response) {
        SystemCode systemCode = SystemCode.OK;
        return new RestResponse<>(systemCode.getCode(), systemCode.getMessage(), response);
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public T getResponse() {
        return response;
    }

    public void setResponse(T response) {
        this.response = response;
    }
}