[feat] add pkgs, dockerfile, makefile

pkg/errors/errors.go

@@ -0,0 +1,39 @@
+package errors
+
+import (
+	"fmt"
+	"go-api/pkg/response"
+)
+
+var (
+	ErrDataFormat    = New(response.RespDataFormat)
+	ErrUnauthorized  = New(response.RespUnauthorized)
+	ErrNotFound      = New(response.RespNotFound)
+	ErrInternalError = New(response.RespInternalError)
+)
+
+type APIError struct {
+	code    *response.MessageCode
+	status  response.RespType
+	message string
+}
+
+func (e *APIError) Error() string {
+	s := fmt.Sprintf("Status: %s, Message: %s", e.status, e.message)
+	if e.code != nil {
+		c, m := response.GetCodeMessage(*e.code)
+		s = fmt.Sprintf("%s, Code: %d, CodeMessage: %s", s, c, m)
+	}
+	return s
+}
+
+func New(status response.RespType, code ...response.MessageCode) *APIError {
+	e := &APIError{
+		status: status,
+	}
+
+	if len(code) > 0 {
+		e.code = &code[0]
+	}
+	return e
+}