refactor(internal/cmd): move backend cmd functions to grafanabackuper package

internal/config/config.go

@@ -3,11 +3,14 @@ package config
 import (
 	"errors"
 	"io"
+
+	"github.com/rs/zerolog"
 )
 
 type Config struct {
 	Debug        bool
 	ForceCommits bool
+	JSONFormat   bool
 	GrafanaURL   string
 	GrafanaToken string
 	GitBranch    string
@@ -18,34 +21,35 @@ type Config struct {
 	GPGKey       string
 
 	Output io.Writer
+	Logger zerolog.Logger
 }
 
-func (c *Config) Validate() error {
-	var err error
+func (c *Config) Validate() []error {
+	var errs []error
 
 	if c.GrafanaURL == "" {
-		err = errors.Join(err, errors.New("invalid grafana URL, must not be blank"))
+		errs = append(errs, errors.New("invalid grafana URL, must not be blank"))
 	}
 
 	if c.GrafanaToken == "" {
-		err = errors.Join(err, errors.New("invalid auth token for grafana, must not be blank"))
+		errs = append(errs, errors.New("invalid auth token for grafana, must not be blank"))
 	}
 
 	if c.GitRepo == "" {
-		err = errors.Join(err, errors.New("invalid repo url for git, must not be blank"))
+		errs = append(errs, errors.New("invalid repo url for git, must not be blank"))
 	}
 
 	if c.GitUser == "" {
-		err = errors.Join(err, errors.New("invalid username for git, must not be blank"))
+		errs = append(errs, errors.New("invalid username for git, must not be blank"))
 	}
 
 	if c.GitPass == "" {
-		err = errors.Join(err, errors.New("invalid password for git, must not be blank"))
+		errs = append(errs, errors.New("invalid password for git, must not be blank"))
 	}
 
 	if c.GitBranch == "" {
-		err = errors.Join(err, errors.New("invalid branch name for git, must not be blank"))
+		errs = append(errs, errors.New("invalid branch name for git, must not be blank"))
 	}
 
-	return err
+	return errs
 }