package route

import (
	"net/http"
	"path"
	"time"

	"forge.cadoles.com/Cadoles/daddy/internal/config"
	"forge.cadoles.com/Cadoles/daddy/internal/graph"
	"forge.cadoles.com/Cadoles/daddy/internal/graph/generated"
	"forge.cadoles.com/Cadoles/daddy/internal/session"
	oidc "forge.cadoles.com/wpetit/goweb-oidc"
	"github.com/99designs/gqlgen/graphql/handler"
	"github.com/99designs/gqlgen/graphql/handler/extension"
	"github.com/99designs/gqlgen/graphql/handler/transport"
	"github.com/99designs/gqlgen/graphql/playground"
	"github.com/gorilla/websocket"

	"github.com/go-chi/chi"
	"github.com/rs/cors"
	"gitlab.com/wpetit/goweb/static"
)

func Mount(r *chi.Mux, config *config.Config) error {

	r.With(oidc.HandleCallback).Get("/oauth2/callback", handleLoginCallback)
	r.Get("/logout", handleLogout)
	r.Get("/login", handleLogin)
	r.Get("/logout/redirect", handleLogoutRedirect)

	r.Route("/api", func(r chi.Router) {
		r.Use(cors.New(cors.Options{
			AllowedOrigins:   config.HTTP.CORS.AllowedOrigins,
			AllowCredentials: config.HTTP.CORS.AllowCredentials,
			Debug:            config.Debug,
		}).Handler)
		r.Use(session.UserEmailMiddleware)

		gqlConfig := generated.Config{
			Resolvers: &graph.Resolver{},
		}

		gql := handler.New(
			generated.NewExecutableSchema(gqlConfig),
		)

		gql.AddTransport(transport.POST{})
		gql.AddTransport(&transport.Websocket{
			KeepAlivePingInterval: 10 * time.Second,
			Upgrader: websocket.Upgrader{
				CheckOrigin: func(r *http.Request) bool {
					// TODO Check WS connection origin
					return true
				},
				ReadBufferSize:  1024,
				WriteBufferSize: 1024,
			},
		})

		if config.Debug {
			gql.Use(extension.Introspection{})
			r.Get("/v1/playground", playground.Handler("GraphQL playground", "/api/v1/graphql"))
		}

		r.Handle("/v1/graphql", gql)
	})

	clientIndex := path.Join(config.HTTP.PublicDir, "index.html")

	serveClientIndex := func(w http.ResponseWriter, r *http.Request) {
		http.ServeFile(w, r, clientIndex)
	}

	// List of paths handled directly by the client
	clientRoutes := []string{
		"/workgroups/*",
		"/profile",
		"/dashboard",
		"/decisions/*",
		"/unauthorized",
	}

	for _, cr := range clientRoutes {
		r.Get(cr, serveClientIndex)
	}

	// Serve static files
	notFoundHandler := r.NotFoundHandler()
	r.Get("/*", static.Dir(config.HTTP.PublicDir, "", notFoundHandler))

	return nil
}