package appimport (	"embed"	"html/template"	"io/fs"	"net/http"	"github.com/nxrmqlly/district/auth"	"github.com/nxrmqlly/district/store")// Router handles routes and templates. It implements http.Handlertype Router struct {	mux       *http.ServeMux	queries   *store.Queries	templates *template.Template	auth      *auth.Service	GlobalMws []Middleware}func NewRouter(queries *store.Queries) (*Router, error) {	tmpl, err := parseTemplates()	if err != nil {		return nil, err	}	ro := Router{		mux:       http.NewServeMux(),		queries:   queries,		templates: tmpl,		auth:      auth.New(queries),	}	err = ro.routes()	if err != nil {		return nil, err	}	return &ro, nil}//go:embed staticvar staticFS embed.FSfunc (ro *Router) routes() error {	csrf := http.NewCrossOriginProtection()	ro.GlobalMws = append(ro.GlobalMws,		ro.Logging,        // the csrf handler should ideally go after logging,		csrf.Handler,      //     so caught 403s are logged.		ro.Authentication, // generic auth	)	staticFS, err := fs.Sub(staticFS, "static")	if err != nil {		return err	}	ro.mux.Handle("GET /static/", http.StripPrefix("/static/", http.FileServerFS(staticFS)))	ro.Handle("GET  /{$}", ro.handleHome)	ro.Handle("GET  /submit", ro.handleSubmitView, ro.RequireAuthRedirect)	ro.Handle("POST /submit", ro.handleSubmitCreate, ro.RequireAuth)	ro.Handle("GET  /p/{id}", ro.handlePostGet)	ro.Handle("POST /p/{id}/comment", ro.handleCommentCreate, ro.RequireAuth)	ro.Handle("GET  /login", ro.handleLoginView)	ro.Handle("POST /login", ro.handleLogin)	ro.Handle("GET  /register", ro.handleRegisterView)	ro.Handle("POST /register", ro.handleRegister)	ro.Handle("POST /logout", ro.handleLogout, ro.RequireAuth)	return nil}func (ro *Router) ServeHTTP(w http.ResponseWriter, r *http.Request) {	ro.mux.ServeHTTP(w, r)}func (ro *Router) Handle(pattern string, f http.HandlerFunc, mws ...Middleware) {	ro.mux.Handle(pattern, Chain(f, append(ro.GlobalMws, mws...)...))}