package myerrors

import (
	"context"
	"dashoo.cn/common_definition/comm_def"
	"github.com/gogf/gf/errors/gcode"
	"github.com/gogf/gf/errors/gerror"
	"github.com/gogf/gf/frame/g"
	"github.com/smallnest/rpcx/codec"
	"github.com/smallnest/rpcx/protocol"
	"strings"
)

var (
	codeTipsErr      = gcode.New(1001, "错误提示", nil)
	codeValidErr     = gcode.New(1002, "数据校验失败", nil)
	codeQueryErr     = gcode.New(1003, "%s查询失败", nil)
	codeCreateErr    = gcode.New(1004, "%s创建失败", nil)
	codeUpdateErr    = gcode.New(1005, "%s更新失败", nil)
	codeDeleteErr    = gcode.New(1006, "%s删除失败", nil)
	codeAuthErr      = gcode.New(1010, "登录失效或认证失败，请重新尝试", nil)
	codePermErr      = gcode.New(1011, "权限验证失败，请重新尝试", nil)
	codeMicroCallErr = gcode.New(1100, "微服务调用失败，请重新尝试", nil)
	codeConvErr      = gcode.New(1200, "数据转换异常，请重新尝试", nil)
	codeDbErr        = gcode.New(1201, "数据库操作异常，请重新尝试", nil)
	codeSysErr       = gcode.New(500, "系统异常，请重新尝试", nil)
)

//	func New(errCode int, err error, errMsg ...string) error {
//		if err == nil {
//			return gerror.NewCode(errCode, handleErrMsg(ConvErr, errMsg...))
//		}
//		return gerror.WrapCode(errCode, err, handleErrMsg(ConvErr, errMsg...))
//	}
func TipsError(errMsg string) error {
	return gerror.NewCode(codeTipsErr, errMsg)
}
func ValidError(errMsg ...string) error {
	return gerror.NewCode(codeValidErr, handleErrMsg(codeValidErr, errMsg...))
}
func QueryError(err error, module string) error {
	return gerror.WrapCodef(codeQueryErr, err, codeQueryErr.Message(), module)
}
func CreateError(err error, module string) error {
	return gerror.WrapCodef(codeCreateErr, err, codeCreateErr.Message(), module)
}
func UpdateError(err error, module string) error {
	return gerror.WrapCodef(codeUpdateErr, err, codeUpdateErr.Message(), module)
}
func DeleteError(err error, module string) error {
	return gerror.WrapCodef(codeDeleteErr, err, codeDeleteErr.Message(), module)
}
func AuthError(errMsg ...string) error {
	return gerror.NewCode(codeAuthErr, handleErrMsg(codeAuthErr, errMsg...))
}
func PermError(errMsg ...string) error {
	return gerror.NewCode(codePermErr, handleErrMsg(codePermErr, errMsg...))
}
func MicroCallError(errMsg ...string) error {
	return gerror.NewCode(codeMicroCallErr, handleErrMsg(codeMicroCallErr, errMsg...))
}
func ConvError(errMsg ...string) error {
	return gerror.NewCode(codeConvErr, handleErrMsg(codeConvErr, errMsg...))
}
func DbError(errMsg ...string) error {
	return gerror.NewCode(codeDbErr, handleErrMsg(codeDbErr, errMsg...))
}
func SysError() error {
	return gerror.NewCode(codeSysErr, codeSysErr.Message())
}

func handleErrMsg(errCode gcode.Code, errMsg ...string) string {
	msg := errCode.Message()
	if len(errMsg) > 0 {
		msg = errCode.Message() + ": " + strings.Join(errMsg, ", ")
	}
	return msg
}

type HandleErrorPlugin struct{}

func (p HandleErrorPlugin) getSerializeType(mes *protocol.Message) codec.Codec {
	var serializer codec.Codec
	switch mes.SerializeType() {
	case protocol.SerializeNone:
		return nil
	case protocol.JSON:
		serializer = codec.JSONCodec{}
	case protocol.ProtoBuffer:
		serializer = codec.PBCodec{}
	case protocol.MsgPack:
		serializer = codec.MsgpackCodec{}
	case protocol.Thrift:
		serializer = codec.ThriftCodec{}
	}
	return serializer
}

func (p HandleErrorPlugin) PreWriteResponse(ctx context.Context, req *protocol.Message, res *protocol.Message, err error) error {
	resData := new(comm_def.CommonMsg)
	serializer := p.getSerializeType(res)
	if err == nil {
		// todo 正常数据处理
		if serializerErr := serializer.Decode(res.Payload, resData); serializerErr != nil {
			return serializerErr
		}

		if resData.Code == 0 {
			resData.Code = 200
		}
		if resData.Msg == "" {
			resData.Msg = "操作成功"
		}
		res.Payload, _ = serializer.Encode(resData)
		return nil
	}
	// error 堆栈信息输出
	g.Log().Error(gerror.Stack(err))
	topCode := gerror.Code(err).Code()
	// 检查是否存在二级错误，如存在取底层错误信息
	gNextError := gerror.Next(err)
	nextErrCode := topCode
	if gNextError != nil {
		nextErrCode = gerror.Code(gNextError).Code()
	}
	switch true {
	case nextErrCode > 1000:
		// 业务级异常处理
		resData.Code = int32(topCode)
		resData.Msg = err.Error()

	case nextErrCode == gcode.CodeValidationFailed.Code():
		// goframe 数据校验
		// 检查是否存在业务信息，添加显示
		resData.Code = int32(codeValidErr.Code())
		resData.Msg = codeValidErr.Message() + ": " + err.Error()

	case nextErrCode > 0 && topCode > 1000:
		// 检查是否存在业务信息，添加显示
		resData.Code = int32(topCode)
		resData.Msg = splitErrorStr(err.Error())

	default:
		// 默认返回系统级异常处理
		resData.Code = int32(codeSysErr.Code())
		resData.Msg = codeSysErr.Message()
	}
	res.Payload, _ = serializer.Encode(resData)
	res.SetMessageStatusType(protocol.Normal)
	if res.Metadata != nil {
		delete(res.Metadata, protocol.ServiceError)
	}

	return nil
}

func splitErrorStr(errMsg string) string {
	errStrIndex := strings.Index(errMsg, ": ")
	return errMsg[:errStrIndex] + ": " + codeSysErr.Message()
}