// Copyright 2022 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package relayapi

import (
	"github.com/gorilla/mux"
	federationAPI "github.com/matrix-org/dendrite/federationapi/api"
	"github.com/matrix-org/dendrite/federationapi/producers"
	keyserverAPI "github.com/matrix-org/dendrite/keyserver/api"
	"github.com/matrix-org/dendrite/relayapi/api"
	relayAPI "github.com/matrix-org/dendrite/relayapi/api"
	"github.com/matrix-org/dendrite/relayapi/internal"
	"github.com/matrix-org/dendrite/relayapi/inthttp"
	"github.com/matrix-org/dendrite/relayapi/routing"
	"github.com/matrix-org/dendrite/relayapi/storage"
	rsAPI "github.com/matrix-org/dendrite/roomserver/api"
	"github.com/matrix-org/dendrite/setup/base"
	userapi "github.com/matrix-org/dendrite/userapi/api"
	"github.com/matrix-org/gomatrixserverlib"
	"github.com/sirupsen/logrus"
)

// AddInternalRoutes registers HTTP handlers for the internal API. Invokes functions
// on the given input API.
func AddInternalRoutes(router *mux.Router, intAPI api.RelayInternalAPI) {
	inthttp.AddRoutes(intAPI, router)
}

// AddPublicRoutes sets up and registers HTTP handlers on the base API muxes for the FederationAPI component.
func AddPublicRoutes(
	base *base.BaseDendrite,
	userAPI userapi.UserInternalAPI,
	fedClient *gomatrixserverlib.FederationClient,
	keyRing gomatrixserverlib.JSONVerifier,
	rsAPI rsAPI.FederationRoomserverAPI,
	relayAPI relayAPI.RelayInternalAPI,
	fedAPI federationAPI.FederationInternalAPI,
	keyAPI keyserverAPI.FederationKeyAPI,
) {
	fedCfg := &base.Cfg.FederationAPI

	relay, ok := relayAPI.(*internal.RelayInternalAPI)
	if !ok {
		panic("relayapi.AddPublicRoutes called with a RelayInternalAPI impl which was not " +
			"RelayInternalAPI. This is a programming error.")
	}

	routing.Setup(
		base.PublicFederationAPIMux,
		fedCfg,
		relay,
		keyRing,
	)
}

func NewRelayInternalAPI(
	base *base.BaseDendrite,
	fedClient *gomatrixserverlib.FederationClient,
	rsAPI rsAPI.RoomserverInternalAPI,
	keyRing *gomatrixserverlib.KeyRing,
	producer *producers.SyncAPIProducer,
) internal.RelayInternalAPI {
	cfg := &base.Cfg.RelayAPI

	relayDB, err := storage.NewDatabase(base, &cfg.Database, base.Caches, base.Cfg.Global.IsLocalServerName)
	if err != nil {
		logrus.WithError(err).Panic("failed to connect to relay db")
	}

	return internal.NewRelayInternalAPI(
		relayDB,
		fedClient,
		rsAPI,
		keyRing,
		producer,
		base.Cfg.Global.Presence.EnableInbound,
		base.Cfg.Global.ServerName,
	)
}