package smartconfig

import (
	"fmt"
	"os/exec"
	"strings"
)

// ExecResolver executes shell commands and returns their output.
// Usage: ${EXEC:command}
type ExecResolver struct{}

// Resolve executes the command and returns its output.
func (r *ExecResolver) Resolve(value string) (string, error) {
	cmd := exec.Command("sh", "-c", value)
	output, err := cmd.Output()
	if err != nil {
		return "", fmt.Errorf("exec command failed: %w", err)
	}
	return strings.TrimSpace(string(output)), nil
}