package nf

import (
	"fmt"
	"net/http"
)

type App struct {
	*RouterGroup
	router *router
	groups []*RouterGroup
}

func (a *App) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
	c := newContext(writer, request)
	if err := a.router.handle(c); err != nil {
		writer.WriteHeader(500)
		_, _ = writer.Write([]byte(err.Error()))
	}
}

func (a *App) Get(path string, handlers ...HandlerFunc) {
	if len(handlers) == 0 {
		panic(fmt.Sprintf("missing handler in route: %s", path))
	}

	for _, handler := range handlers {
		if handler == nil {
			panic(fmt.Sprintf("nil handler found in route: %s", path))
		}
	}

	a.router.addRoute(http.MethodGet, path, handlers...)
}

func (a *App) Run(address string) error {
	fmt.Println(banner + "nf serve at: " + address + "\n")
	return http.ListenAndServe(address, a)
}