cmd/resolver: implement sub command to update environment

The env command now accept sub command "update" with argument path to
the file or "-" for standard input.
The content of file is formatted using JSON, the same as output of "env"
command.
If the content of file is valid, server will be restarted immediately.

1 files changed, 26 insertions, 0 deletions

diff --git a/client.go b/client.go
index bafb16b..524322e 100644
--- a/client.go
+++ b/client.go
@@ -144,3 +144,29 @@ func (cl *Client) Env() (env *Environment, err error) {
 	}
 	return env, nil
 }
+
+// EnvUpdate update the server environment using new Environment.
+func (cl *Client) EnvUpdate(envIn *Environment) (envOut *Environment, err error) {
+	var (
+		logp = "EnvUpdate"
+		res  = libhttp.EndpointResponse{
+			Data: &envOut,
+		}
+
+		resb []byte
+	)
+
+	_, resb, err = cl.PostJSON(apiEnvironment, nil, envIn)
+	if err != nil {
+		return nil, fmt.Errorf("%s: %w", logp, err)
+	}
+
+	err = json.Unmarshal(resb, &res)
+	if err != nil {
+		return nil, fmt.Errorf("%s: %w", logp, err)
+	}
+	if res.Code != http.StatusOK {
+		return nil, fmt.Errorf("%s: %d %s", logp, res.Code, res.Message)
+	}
+	return envOut, nil
+}