From 2c9ec8c1ab68928483d2acf1ea4ec3c26ec056bf Mon Sep 17 00:00:00 2001
From: Dan Peleg <dan@globekeeper.com>
Date: Fri, 23 Apr 2021 21:29:05 +0300
Subject: [PATCH] Initial implementation of GET /_matrix/client/r0/pushers

---
 clientapi/routing/pusher.go | 81 +++++++++++++++++++++++++++++++++++++
 userapi/inthttp/client.go   |  9 +++++
 userapi/inthttp/server.go   | 13 ++++++
 3 files changed, 103 insertions(+)
 create mode 100644 clientapi/routing/pusher.go

diff --git a/clientapi/routing/pusher.go b/clientapi/routing/pusher.go
new file mode 100644
index 00000000..902ad7c9
--- /dev/null
+++ b/clientapi/routing/pusher.go
@@ -0,0 +1,81 @@
+// Copyright 2021 Dan Peleg <dan@globekeeper.com>
+//
+// 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"
+
+	"github.com/matrix-org/dendrite/clientapi/jsonerror"
+	"github.com/matrix-org/dendrite/userapi/api"
+	userapi "github.com/matrix-org/dendrite/userapi/api"
+	"github.com/matrix-org/util"
+)
+
+// https://matrix.org/docs/spec/client_server/r0.6.1#get-matrix-client-r0-pushers
+type pusherJSON struct {
+	PusherID          string         `json:"pusher_id"`
+	PushKey           string         `json:"pushkey"`
+	Kind              string         `json:"kind"`
+	AppID             string         `json:"app_id"`
+	AppDisplayName    string         `json:"app_display_name"`
+	DeviceDisplayName string         `json:"device_display_name"`
+	ProfileTag        string         `json:"profile_tag"`
+	Language          string         `json:"lang"`
+	Data              pusherDataJSON `json:"data"`
+}
+
+type pushersJSON struct {
+	Pushers []pusherJSON `json:"pushers"`
+}
+
+type pusherDataJSON struct {
+	URL    string `json:"url"`
+	Format string `json:"format"`
+}
+
+// GetPushersByLocalpart handles /pushers
+func GetPushersByLocalpart(
+	req *http.Request, userAPI userapi.UserInternalAPI, pusher *api.Pusher,
+) util.JSONResponse {
+	var queryRes userapi.QueryPushersResponse
+	err := userAPI.QueryPushers(req.Context(), &userapi.QueryPushersRequest{
+		UserID: pusher.UserID,
+	}, &queryRes)
+	if err != nil {
+		util.GetLogger(req.Context()).WithError(err).Error("QueryPushers failed")
+		return jsonerror.InternalServerError()
+	}
+
+	res := pushersJSON{}
+
+	for _, pusher := range queryRes.Pushers {
+		res.Pushers = append(res.Pushers, pusherJSON{
+			PusherID:          pusher.ID,
+			PushKey:           pusher.PushKey,
+			Kind:              pusher.Kind,
+			AppID:             pusher.AppID,
+			AppDisplayName:    pusher.AppDisplayName,
+			DeviceDisplayName: pusher.DeviceDisplayName,
+			ProfileTag:        pusher.ProfileTag,
+			Language:          pusher.Language,
+			Data:              pusherDataJSON(pusher.Data),
+		})
+	}
+
+	return util.JSONResponse{
+		Code: http.StatusOK,
+		JSON: res,
+	}
+}
diff --git a/userapi/inthttp/client.go b/userapi/inthttp/client.go
index 1cb5ef0a..aa3ab609 100644
--- a/userapi/inthttp/client.go
+++ b/userapi/inthttp/client.go
@@ -40,6 +40,7 @@ const (
 	QueryProfilePath        = "/userapi/queryProfile"
 	QueryAccessTokenPath    = "/userapi/queryAccessToken"
 	QueryDevicesPath        = "/userapi/queryDevices"
+	QueryPushersPath        = "/userapi/queryPushers"
 	QueryAccountDataPath    = "/userapi/queryAccountData"
 	QueryDeviceInfosPath    = "/userapi/queryDeviceInfos"
 	QuerySearchProfilesPath = "/userapi/querySearchProfiles"
@@ -202,6 +203,14 @@ func (h *httpUserInternalAPI) QueryDevices(ctx context.Context, req *api.QueryDe
 	return httputil.PostJSON(ctx, span, h.httpClient, apiURL, req, res)
 }
 
+func (h *httpUserInternalAPI) QueryPushers(ctx context.Context, req *api.QueryPushersRequest, res *api.QueryPushersResponse) error {
+	span, ctx := opentracing.StartSpanFromContext(ctx, "QueryPushers")
+	defer span.Finish()
+
+	apiURL := h.apiURL + QueryPushersPath
+	return httputil.PostJSON(ctx, span, h.httpClient, apiURL, req, res)
+}
+
 func (h *httpUserInternalAPI) QueryAccountData(ctx context.Context, req *api.QueryAccountDataRequest, res *api.QueryAccountDataResponse) error {
 	span, ctx := opentracing.StartSpanFromContext(ctx, "QueryAccountData")
 	defer span.Finish()
diff --git a/userapi/inthttp/server.go b/userapi/inthttp/server.go
index 1c1cfdcd..5fddb2a8 100644
--- a/userapi/inthttp/server.go
+++ b/userapi/inthttp/server.go
@@ -169,6 +169,19 @@ func AddRoutes(internalAPIMux *mux.Router, s api.UserInternalAPI) {
 			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
 		}),
 	)
+	internalAPIMux.Handle(QueryPushersPath,
+		httputil.MakeInternalAPI("queryPushers", func(req *http.Request) util.JSONResponse {
+			request := api.QueryPushersRequest{}
+			response := api.QueryPushersResponse{}
+			if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
+				return util.MessageResponse(http.StatusBadRequest, err.Error())
+			}
+			if err := s.QueryPushers(req.Context(), &request, &response); err != nil {
+				return util.ErrorResponse(err)
+			}
+			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
+		}),
+	)
 	internalAPIMux.Handle(QueryAccountDataPath,
 		httputil.MakeInternalAPI("queryAccountData", func(req *http.Request) util.JSONResponse {
 			request := api.QueryAccountDataRequest{}