package shortcuts

import (
	"strings"

	"git.zb-server.de/Sebi/ssh-netbox-wrapper/internal/config"
)

// Normalize strips configured domain suffixes and optionally hyphens from a hostname.
// The result is lowercased for case-insensitive comparison.
func Normalize(name string, cfg config.ShortcutsConfig) string {
	s := strings.ToLower(name)
	for _, domain := range cfg.Domains {
		suffix := strings.ToLower(domain)
		if !strings.HasPrefix(suffix, ".") {
			suffix = "." + suffix
		}
		if strings.HasSuffix(s, suffix) {
			s = s[:len(s)-len(suffix)]
			break
		}
	}
	if cfg.StripHyphens {
		s = strings.ReplaceAll(s, "-", "")
	}
	return s
}

// MakeNormalizer returns a closure bound to cfg, suitable for Cache.GetByShortcut.
func MakeNormalizer(cfg config.ShortcutsConfig) func(string) string {
	return func(name string) string {
		return Normalize(name, cfg)
	}
}

// AliasName returns a shell-safe alias name for the given host.
// It normalizes the name (strips configured domains and optionally hyphens) then
// replaces any remaining dots with underscores so the result is a valid identifier.
func AliasName(name string, cfg config.ShortcutsConfig) string {
	s := Normalize(name, cfg)
	return strings.ReplaceAll(s, ".", "_")
}