feat: auto detect hostname

cmd/root.go

@@ -3,9 +3,11 @@ package cmd
 import (
 	"fmt"
 	"os"
+	"strings"
 
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
+	"codeberg.org/romaintb/fgj/internal/git"
 )
 
 var cfgFile string
@@ -53,3 +55,34 @@ func initConfig() {
 
 	_ = viper.ReadInConfig()
 }
+
+// parseRepo parses the repository string in the format "owner/name".
+// If not provided, it attempts to auto-detect from the git repository.
+func parseRepo(repo string) (string, string, error) {
+	// If repo flag is provided, use it
+	if repo != "" {
+		parts := strings.Split(repo, "/")
+		if len(parts) != 2 {
+			return "", "", fmt.Errorf("invalid repository format: %s (expected: owner/name)", repo)
+		}
+		return parts[0], parts[1], nil
+	}
+
+	// Try to auto-detect from git
+	owner, name, err := git.DetectRepo()
+	if err != nil {
+		return "", "", fmt.Errorf("repository flag is required (use -R owner/name) or run from a git repository: %w", err)
+	}
+
+	return owner, name, nil
+}
+
+// getDetectedHost attempts to auto-detect the Forgejo instance hostname.
+// Returns empty string if detection fails, which will fall back to other methods.
+func getDetectedHost() string {
+	host, err := git.DetectHost()
+	if err != nil {
+		return ""
+	}
+	return host
+}