init: create project

server/service/errors.go

@@ -0,0 +1,42 @@
+package service
+
+import (
+	"errors"
+	"github.com/labstack/echo/v4"
+	"net/http"
+	"strings"
+)
+
+var (
+	OK                    = errors.New("ok")
+	UnknownError          = errors.New("unknown error")
+	InvalidParameterError = errors.New("invalid parameter error")
+)
+
+var errorMap = map[error]int{
+	OK:                    0,
+	UnknownError:          10001,
+	InvalidParameterError: 10002,
+}
+
+type Response struct {
+	Code    int         `json:"code"`
+	Message string      `json:"message"`
+	Data    interface{} `json:"data,omitempty"`
+}
+
+func NewResponse(ctx echo.Context, err error, data interface{}) error {
+	if err == nil {
+		err = OK
+	}
+	code, ok := errorMap[err]
+	if !ok {
+		err = UnknownError
+		code = errorMap[err]
+	}
+	return ctx.JSONPretty(http.StatusOK, &Response{
+		Code:    code,
+		Message: strings.ToLower(err.Error()),
+		Data:    data,
+	}, "\x20\x20")
+}