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package nstatus
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import (
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"fmt"
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"git.noahlan.cn/noahlan/ntool-biz/core/nstatus/code"
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"git.noahlan.cn/noahlan/ntool/njson"
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)
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type ResultType string
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const (
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CommonResult ResultType = "common" // 一般返回值
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ApiErr = "api_err" // ApiErr Api错误，用于返回携带http状态码的错误返回信息
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BizErr = "biz_err" // BizErr 业务错误，错误状态码统一为500，详细状态码在返回体的code中
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RpcErr = "rpc_err" // RpcErr Rpc错误
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)
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// Result 统一返回结果 结构体
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// {"code":200,"msg":"OK","data":{}}
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// API RPC 共用
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type Result struct {
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Code int `json:"code"` // 返回编码（业务+错误）
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Msg string `json:"msg"` // 消息
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Data any `json:"data,omitempty,optional"` // 数据
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Type ResultType `json:"-,omitempty,optional"` // Typ 返回结果类型，忽略json
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}
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func NewResult(code int, message string, typ ResultType) *Result {
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return NewResultWithData(code, message, typ, nil)
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}
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func NewResultWithData(code int, message string, typ ResultType, data any) *Result {
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return &Result{
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Code: code,
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Msg: message,
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Data: data,
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Type: typ,
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}
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}
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// Error 错误输出，同时可作为错误
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func (r *Result) Error() string {
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return r.Msg
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}
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func (r *Result) Err() error {
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return r
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}
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func (r *Result) Cause() error {
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return r
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}
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func (r *Result) String() string {
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return fmt.Sprintf("Code:%d Message:%s Data:%v", r.Code, r.Msg, r.Data)
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}
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// JsonString 返回JsonString格式
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func (r *Result) JsonString() string {
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return njson.MarshalStrSafe(r)
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}
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// FromError returns a Status representation of err.
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//
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// - If err was produced by this package *Result`, the appropriate Result is returned.
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// - If err is nil, a nil is returned.
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//
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// - Otherwise, err is an error not compatible with this package. In this
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// case, a *Result is returned with code.StatusUnknown and err's Error() message,
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// and ok is false.
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func FromError(err error) (*Result, bool) {
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if err == nil {
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return nil, false
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}
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if se, ok := err.(*Result); ok {
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return se, true
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}
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return NewResult(code.StatusUnknown, err.Error(), CommonResult), false
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}
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