// Copyright 2017 Vector Creations Ltd
//
// 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 readers

import (
	"net/http"

	"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
	"github.com/matrix-org/dendrite/clientapi/auth/storage/devices"
	"github.com/matrix-org/dendrite/clientapi/httputil"
	"github.com/matrix-org/dendrite/clientapi/jsonerror"
	"github.com/matrix-org/gomatrixserverlib"
	"github.com/matrix-org/util"
)

// Logout handles POST /logout
func Logout(
	req *http.Request, deviceDB *devices.Database, device *authtypes.Device,
) util.JSONResponse {
	if req.Method != "POST" {
		return util.JSONResponse{
			Code: 405,
			JSON: jsonerror.NotFound("Bad method"),
		}
	}

	localpart, _, err := gomatrixserverlib.SplitID('@', device.UserID)
	if err != nil {
		return httputil.LogThenError(req, err)
	}

	if err := deviceDB.RemoveDevice(req.Context(), device.ID, localpart); err != nil {
		return httputil.LogThenError(req, err)
	}

	return util.JSONResponse{
		Code: 200,
		JSON: struct{}{},
	}
}
