feat(config): add config package

internal/config/config.go

@@ -0,0 +1,36 @@
+package config
+
+import (
+	"flag"
+	"os"
+
+	"github.com/peterbourgon/ff"
+)
+
+const envVarPrefix = "GB"
+
+type Config struct {
+	ForceCommits bool
+	GrafanaURL   string
+	GrafanaToken string
+	GitBranch    string
+	GitRepo      string
+	GitUser      string
+	GitEmail     string
+	GitPass      string
+	GPGKey       string
+}
+
+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")
+
+	return ff.Parse(fs, os.Args[1:], ff.WithEnvVarPrefix(envVarPrefix))
+}