package handler

import (
	"strings"
)

// IsProjectRootURL reports whether urlPath names a project root —
// exactly one path segment, no trailing slash. Used by the dispatcher
// to route /<project> (no trailing slash) to the landing tool's
// project-workspace mode rather than the historical redirect-to-slash.
//
// Examples:
//
//	"/Project-1"     → true
//	"/Project-1/"    → false (trailing slash → directory listing)
//	"/Project-1/x"   → false (deeper)
//	"/"              → false (deployment root)
//	""               → false
//
// The actual page rendering lives client-side in landing/js/landing.js
// (mode='project'); this server-side predicate only decides where to
// route the request.
func IsProjectRootURL(urlPath string) bool {
	if urlPath == "" || urlPath == "/" {
		return false
	}
	if strings.HasSuffix(urlPath, "/") {
		return false
	}
	trimmed := strings.TrimPrefix(urlPath, "/")
	return !strings.Contains(trimmed, "/")
}