feat: Add Filter API [WIP]

go.mod

@@ -1,4 +1,4 @@
-module github.com/nxshock/signaller
+module github.com/signaller-matrix/signaller
 
 go 1.12
 

internal/backend.go

@@ -2,6 +2,7 @@ package internal
 
 import (
 	"github.com/signaller-matrix/signaller/internal/models"
+	"github.com/signaller-matrix/signaller/internal/models/common"
 	"github.com/signaller-matrix/signaller/internal/models/createroom"
 	"github.com/signaller-matrix/signaller/internal/models/devices"
 	"github.com/signaller-matrix/signaller/internal/models/rooms"
@@ -50,4 +51,6 @@ type User interface {
 	LogoutAll()
 	JoinRoom(Room) models.ApiError
 	Invite(Room, User) models.ApiError
+	AddFilter(filterID string, filter common.Filter)
+	GetFilterByID(filterID string) *common.Filter
 }

internal/backends/memory/backend.go

@@ -73,7 +73,7 @@ func (backend *Backend) Login(username, password, device string) (user internal.
 		return nil, "", models.NewError(models.M_FORBIDDEN, "wrong password")
 	}
 
-	token = newToken(defaultTokenSize)
+	token = internal.RandomString(defaultTokenSize)
 
 	backend.data[username].(*User).Tokens[token] = Token{Device: device}
 

internal/backends/memory/user.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/signaller-matrix/signaller/internal"
 	"github.com/signaller-matrix/signaller/internal/models"
+	"github.com/signaller-matrix/signaller/internal/models/common"
 	"github.com/signaller-matrix/signaller/internal/models/createroom"
 	"github.com/signaller-matrix/signaller/internal/models/devices"
 	"github.com/signaller-matrix/signaller/internal/models/rooms"
@@ -15,6 +16,7 @@ type User struct {
 	name     string
 	password string
 	Tokens   map[string]Token
+	filters  map[string]common.Filter
 
 	backend *Backend
 
@@ -48,7 +50,7 @@ func (user *User) CreateRoom(request createroom.Request) (internal.Room, models.
 	events = append(events, RoomEvent{
 		Content:        nil,
 		Type:           rooms.Create,
-		EventID:        newToken(eventIDSize),
+		EventID:        internal.RandomString(eventIDSize),
 		Sender:         user,
 		OriginServerTS: t})
 
@@ -58,7 +60,7 @@ func (user *User) CreateRoom(request createroom.Request) (internal.Room, models.
 	events = append(events, RoomEvent{
 		Content:        []byte(request.Visibility), // TODO: check visibility vs join rules
 		Type:           rooms.JoinRules,
-		EventID:        newToken(eventIDSize),
+		EventID:        internal.RandomString(eventIDSize),
 		Sender:         user,
 		OriginServerTS: t})
 
@@ -67,7 +69,7 @@ func (user *User) CreateRoom(request createroom.Request) (internal.Room, models.
 		events = append(events, RoomEvent{
 			Content:        nil, // TODO: add
 			Type:           rooms.Name,
-			EventID:        newToken(eventIDSize),
+			EventID:        internal.RandomString(eventIDSize),
 			Sender:         user,
 			OriginServerTS: t})
 	}
@@ -77,13 +79,13 @@ func (user *User) CreateRoom(request createroom.Request) (internal.Room, models.
 		events = append(events, RoomEvent{
 			Content:        nil, // TODO: add
 			Type:           rooms.CanonicalAlias,
-			EventID:        newToken(eventIDSize),
+			EventID:        internal.RandomString(eventIDSize),
 			Sender:         user,
 			OriginServerTS: t})
 	}
 
 	room := &Room{
-		id:         newToken(groupIDSize),
+		id:         internal.RandomString(groupIDSize),
 		aliasName:  request.RoomAliasName,
 		name:       request.Name,
 		topic:      request.Topic,
@@ -190,7 +192,7 @@ func (user *User) SendMessage(room internal.Room, text string) models.ApiError {
 	room.(*Room).events = append(room.(*Room).events, RoomEvent{
 		Content:        nil,
 		Type:           rooms.Message,
-		EventID:        newToken(defaultTokenSize),
+		EventID:        internal.RandomString(defaultTokenSize),
 		Sender:         user,
 		OriginServerTS: time.Now(),
 		Room:           room})
@@ -275,3 +277,14 @@ func (user *User) JoinRoom(room internal.Room) models.ApiError {
 
 	return nil
 }
+
+func (user *User) AddFilter(filterID string, filter common.Filter) {
+	user.filters[filterID] = filter
+}
+
+func (user *User) GetFilterByID(filterID string) *common.Filter {
+	if val, ok := user.filters[filterID]; ok {
+		return &val
+	}
+	return nil
+}

internal/handlers.go

@@ -323,6 +323,61 @@ func CapabilitiesHandler(w http.ResponseWriter, r *http.Request) {
 	sendJsonResponse(w, http.StatusOK, response)
 }
 
+func AddFilterHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		errorResponse(w, models.M_UNKNOWN, http.StatusBadRequest, "wrong method: "+r.Method)
+		return
+	}
+
+	token := getTokenFromResponse(r)
+	if token == "" {
+		errorResponse(w, models.M_FORBIDDEN, http.StatusForbidden, "")
+		return
+	}
+
+	user := currServer.Backend.GetUserByToken(token)
+	if user == nil {
+		errorResponse(w, models.M_UNKNOWN_TOKEN, http.StatusBadRequest, "")
+		return
+	}
+
+	var request common.Filter
+	getRequest(r, &request)
+
+	filterID := RandomString(12)
+	user.AddFilter(filterID, request)
+
+	sendJsonResponse(w, http.StatusOK, map[string]interface{}{
+		"filter_id": filterID,
+	})
+}
+
+func GetFilterHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		errorResponse(w, models.M_UNKNOWN, http.StatusBadRequest, "wrong method: "+r.Method)
+		return
+	}
+
+	token := getTokenFromResponse(r)
+	if token == "" {
+		errorResponse(w, models.M_FORBIDDEN, http.StatusForbidden, "")
+		return
+	}
+
+	user := currServer.Backend.GetUserByToken(token)
+	if user == nil {
+		errorResponse(w, models.M_UNKNOWN_TOKEN, http.StatusBadRequest, "")
+		return
+	}
+
+	filter := user.GetFilterByID(mux.Vars(r)["filterID"])
+	if filter == nil {
+		errorResponse(w, models.M_INVALID_PARAM, http.StatusNotFound, "")
+	}
+
+	sendJsonResponse(w, http.StatusOK, filter)
+}
+
 // https://matrix.org/docs/spec/client_server/latest#get-matrix-client-r0-devices
 func DevicesHandler(w http.ResponseWriter, r *http.Request) {
 	if r.Method != http.MethodGet {

internal/models/common/filter.go

@@ -0,0 +1,27 @@
+package common
+
+type Filter struct {
+	Room struct {
+		State struct {
+			Types    []string `json:"types"`
+			NotRooms []string `json:"not_rooms"`
+		} `json:"state"`
+		Timeline struct {
+			Limit      int      `json:"limit"`
+			Types      []string `json:"types"`
+			NotRooms   []string `json:"not_rooms"`
+			NotSenders []string `json:"not_senders"`
+		} `json:"timeline"`
+		Ephemeral struct {
+			Types      []string `json:"types"`
+			NotRooms   []string `json:"not_rooms"`
+			NotSenders []string `json:"not_senders"`
+		} `json:"ephemeral"`
+	} `json:"room"`
+	Presence struct {
+		Types      []string `json:"types"`
+		NotSenders []string `json:"not_senders"`
+	} `json:"presence"`
+	EventFormat string   `json:"event_format"`
+	EventFields []string `json:"event_fields"`
+}

internal/random_provider.go

@@ -1,12 +1,12 @@
-package memory
+package internal
 
 import (
 	"crypto/rand"
 	"fmt"
 )
 
-// newToken returns new generated token with specified length
-func newToken(size int) string {
+// RandomString returns new generated token with specified length
+func RandomString(size int) string {
 	b := make([]byte, size)
 	rand.Read(b) // TODO: check may be can be error
 

internal/server.go

@@ -40,6 +40,9 @@ func NewServer(port int) (*Server, error) {
 	router.HandleFunc("/_matrix/client/r0/rooms/{roomId}/leave", leaveRoomHandler)
 	router.HandleFunc("/_matrix/client/r0/register/available", registerAvailableHandler)
 	router.HandleFunc("/_matrix/client/r0/publicRooms", publicRoomsHandler)
+	router.HandleFunc("/_matrix/client/r0/user/{userId}/filter/{filterId}", GetFilterHandler).Methods("GET")
+	router.HandleFunc("/_matrix/client/r0/user/{userId}/filter", AddFilterHandler).Methods("POST")
+
 	router.HandleFunc("/", RootHandler)
 
 	if port <= 0 || port > 65535 {