refactor(cmd): add backup command to cli

internal/config/config.go

@@ -1,36 +1,52 @@
 package config
 
 import (
-	"flag"
-	"os"
-
-	"github.com/peterbourgon/ff"
+	"errors"
+	"io"
 )
 
-const envVarPrefix = "GB"
-
 type Config struct {
+	Debug        bool
 	ForceCommits bool
 	GrafanaURL   string
 	GrafanaToken string
 	GitBranch    string
+	GitEmail     string
 	GitRepo      string
 	GitUser      string
-	GitEmail     string
 	GitPass      string
 	GPGKey       string
+	Quiet        bool
+
+	Output io.Writer
 }
 
-func (c *Config) RegisterFlags(fs *flag.FlagSet) error {
-	fs.BoolVar(&c.ForceCommits, "force-commits", false, "Force git commits / ignore existence check")
-	fs.StringVar(&c.GrafanaURL, "grafana-url", "", "Grafana URL to access the API")
-	fs.StringVar(&c.GrafanaToken, "grafana-token", "", "Grafana auth token to access the API")
-	fs.StringVar(&c.GitBranch, "git-branch", "main", "Git branch name")
-	fs.StringVar(&c.GitRepo, "git-repo", "", "Complete Git repository URL")
-	fs.StringVar(&c.GitUser, "git-user", "", "Git username")
-	fs.StringVar(&c.GitEmail, "git-email", "", "Git email address")
-	fs.StringVar(&c.GitPass, "git-pass", "", "Git user password")
-	fs.StringVar(&c.GPGKey, "signing-key", "", "Path to the GPG signing key")
+func (c *Config) Validate() error {
+	var err error
 
-	return ff.Parse(fs, os.Args[1:], ff.WithEnvVarPrefix(envVarPrefix))
+	if c.GrafanaURL == "" {
+		err = errors.Join(err, 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"))
+	}
+
+	if c.GitRepo == "" {
+		err = errors.Join(err, 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"))
+	}
+
+	if c.GitPass == "" {
+		err = errors.Join(err, 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"))
+	}
+
+	return err
 }