package clashapi

import (
	"context"
	"net/http"

	"github.com/sagernet/sing-box/adapter"

	"github.com/go-chi/chi/v5"
	"github.com/go-chi/render"
)

func proxyProviderRouter(server *Server, router adapter.Router) http.Handler {
	r := chi.NewRouter()
	r.Get("/", getProviders(server, router))

	r.Route("/{name}", func(r chi.Router) {
		r.Use(parseProviderName, findProviderByName)
		r.Get("/", getProvider)
		r.Put("/", updateProvider)
		r.Get("/healthcheck", healthCheckProvider)
	})
	return r
}

func getProviders(server *Server, router adapter.Router) func(w http.ResponseWriter, r *http.Request) {
	return func(w http.ResponseWriter, r *http.Request) {
		var proxies []any
		proxies = append(proxies, render.M{
			"history": []*DelayHistory{},
			"name":    "DIRECT",
			"type":    "Direct",
			"udp":     true,
		})
		proxies = append(proxies, render.M{
			"history": []*DelayHistory{},
			"name":    "REJECT",
			"type":    "Reject",
			"udp":     true,
		})
		for _, detour := range router.Outbounds() {
			proxies = append(proxies, proxyInfo(server, detour))
		}
		render.JSON(w, r, render.M{
			"providers": render.M{
				"default": render.M{
					"name":        "default",
					"type":        "Proxy",
					"proxies":     proxies,
					"vehicleType": "Compatible",
				},
			},
		})
	}
}

func getProvider(w http.ResponseWriter, r *http.Request) {
	/*provider := r.Context().Value(CtxKeyProvider).(provider.ProxyProvider)
	render.JSON(w, r, provider)*/
	render.NoContent(w, r)
}

func updateProvider(w http.ResponseWriter, r *http.Request) {
	/*provider := r.Context().Value(CtxKeyProvider).(provider.ProxyProvider)
	if err := provider.Update(); err != nil {
		render.Status(r, http.StatusServiceUnavailable)
		render.JSON(w, r, newError(err.Error()))
		return
	}*/
	render.NoContent(w, r)
}

func healthCheckProvider(w http.ResponseWriter, r *http.Request) {
	/*provider := r.Context().Value(CtxKeyProvider).(provider.ProxyProvider)
	provider.HealthCheck()*/
	render.NoContent(w, r)
}

func parseProviderName(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		name := getEscapeParam(r, "name")
		ctx := context.WithValue(r.Context(), CtxKeyProviderName, name)
		next.ServeHTTP(w, r.WithContext(ctx))
	})
}

func findProviderByName(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		/*name := r.Context().Value(CtxKeyProviderName).(string)
		providers := tunnel.ProxyProviders()
		provider, exist := providers[name]
		if !exist {*/
		render.Status(r, http.StatusNotFound)
		render.JSON(w, r, ErrNotFound)
		//return
		//}

		// ctx := context.WithValue(r.Context(), CtxKeyProvider, provider)
		// next.ServeHTTP(w, r.WithContext(ctx))
	})
}