1 files changed, 92 insertions, 0 deletions
diff --git a/clientapi/routing/upgrade_room.go b/clientapi/routing/upgrade_room.go
new file mode 100644
index 00000000..00bde36b
--- /dev/null
+++ b/clientapi/routing/upgrade_room.go
@@ -0,0 +1,92 @@
+// 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 routing
+
+import (
+	"net/http"
+
+	appserviceAPI "github.com/matrix-org/dendrite/appservice/api"
+	"github.com/matrix-org/dendrite/clientapi/httputil"
+	"github.com/matrix-org/dendrite/clientapi/jsonerror"
+	roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
+	"github.com/matrix-org/dendrite/roomserver/version"
+	"github.com/matrix-org/dendrite/setup/config"
+	userapi "github.com/matrix-org/dendrite/userapi/api"
+	"github.com/matrix-org/gomatrixserverlib"
+	"github.com/matrix-org/util"
+)
+
+type upgradeRoomRequest struct {
+	NewVersion string `json:"new_version"`
+}
+
+type upgradeRoomResponse struct {
+	ReplacementRoom string `json:"replacement_room"`
+}
+
+// UpgradeRoom implements /upgrade
+func UpgradeRoom(
+	req *http.Request, device *userapi.Device,
+	cfg *config.ClientAPI,
+	roomID string, profileAPI userapi.UserProfileAPI,
+	rsAPI roomserverAPI.RoomserverInternalAPI,
+	asAPI appserviceAPI.AppServiceQueryAPI,
+) util.JSONResponse {
+	var r upgradeRoomRequest
+	if rErr := httputil.UnmarshalJSONRequest(req, &r); rErr != nil {
+		return *rErr
+	}
+
+	// Validate that the room version is supported
+	if _, err := version.SupportedRoomVersion(gomatrixserverlib.RoomVersion(r.NewVersion)); err != nil {
+		return util.JSONResponse{
+			Code: http.StatusBadRequest,
+			JSON: jsonerror.UnsupportedRoomVersion("This server does not support that room version"),
+		}
+	}
+
+	upgradeReq := roomserverAPI.PerformRoomUpgradeRequest{
+		UserID:      device.UserID,
+		RoomID:      roomID,
+		RoomVersion: gomatrixserverlib.RoomVersion(r.NewVersion),
+	}
+	upgradeResp := roomserverAPI.PerformRoomUpgradeResponse{}
+
+	rsAPI.PerformRoomUpgrade(req.Context(), &upgradeReq, &upgradeResp)
+
+	if upgradeResp.Error != nil {
+		if upgradeResp.Error.Code == roomserverAPI.PerformErrorNoRoom {
+			return util.JSONResponse{
+				Code: http.StatusNotFound,
+				JSON: jsonerror.NotFound("Room does not exist"),
+			}
+		} else if upgradeResp.Error.Code == roomserverAPI.PerformErrorNotAllowed {
+			return util.JSONResponse{
+				Code: http.StatusForbidden,
+				JSON: jsonerror.Forbidden(upgradeResp.Error.Msg),
+			}
+		} else {
+			return jsonerror.InternalServerError()
+		}
+
+	}
+
+	return util.JSONResponse{
+		Code: http.StatusOK,
+		JSON: upgradeRoomResponse{
+			ReplacementRoom: upgradeResp.NewRoomID,
+		},
+	}
+}