package rest

import (
	"git.diulo.com/mogfee/kit/rest/httpx"
	"git.diulo.com/mogfee/kit/rest/internal/cors"
	"git.diulo.com/mogfee/kit/rest/router"
	"net/http"
)

type (
	RunOption func(server *Server)

	Server struct {
		ngin   *engine
		router httpx.Router
	}
)

func NewServer(c RestConf, opts ...RunOption) *Server {
	srv := &Server{
		ngin:   newEngine(c),
		router: router.NewRouter(),
	}
	for _, opt := range opts {
		opt(srv)
	}
	return srv
}
func (s *Server) AddRoute(r Route, opts ...RouteOption) {
	s.AddRoutes([]Route{r}, opts...)
}
func (s *Server) AddRoutes(rs []Route, opts ...RouteOption) {
	r := featureRoutes{
		routes: rs,
	}
	for _, opt := range opts {
		opt(&r)
	}
	s.ngin.addRoutes(r)
}
func (s *Server) Start() error {
	return s.ngin.start(s.router)
}
func (s *Server) Use(middleware ...Middleware) {
	s.ngin.use(middleware...)
}
func WithCors(origin ...string) RunOption {
	return func(server *Server) {
		server.router.SetNotAllowedHandler(cors.NotAllowedHandler())
		server.router = newCorsRouter(server.router, origin...)
	}
}

type corsRouter struct {
	httpx.Router
	middleware Middleware
}

func newCorsRouter(router httpx.Router, origin ...string) httpx.Router {
	return &corsRouter{
		Router: router,
		middleware: cors.Middleware(func(w http.Header) {
		}),
	}
}

func (c *corsRouter) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	c.middleware(c.Router.ServeHTTP)(w, r)
}