Add basic implementation of devices method

STATUS.md

@@ -6,8 +6,9 @@ Implemented from [Client-Server API](https://matrix.org/docs/spec/client_server/
 - [x] [5.4.2 POST /_matrix/client/r0/login](https://matrix.org/docs/spec/client_server/latest#post-matrix-client-r0-login)
 - [x] [5.4.3 POST /_matrix/client/r0/logout](https://matrix.org/docs/spec/client_server/latest#post-matrix-client-r0-logout)
 - [x] [5.4.4 POST /_matrix/client/r0/logout/all](https://matrix.org/docs/spec/client_server/latest#post-matrix-client-r0-logout-all)
+- [x] [5.5.1 POST /_matrix/client/r0/register](https://matrix.org/docs/spec/client_server/r0.5.0#post-matrix-client-r0-register)
 - [x] [5.5.4 POST /_matrix/client/r0/account/password](https://matrix.org/docs/spec/client_server/latest#post-matrix-client-r0-account-password)
 - [x] [5.7.1 GET /_matrix/client/r0/account/whoami](https://matrix.org/docs/spec/client_server/latest#get-matrix-client-r0-account-whoami)
 - [x] [6.1 GET /_matrix/client/r0/capabilities](https://matrix.org/docs/spec/client_server/latest#get-matrix-client-r0-capabilities)
 - [x] [10.4.1 GET /_matrix/client/r0/joined_rooms](https://matrix.org/docs/spec/client_server/latest#get-matrix-client-r0-joined-rooms)
-- [x] [5.5.1 POST /_matrix/client/r0/register](https://matrix.org/docs/spec/client_server/r0.5.0#post-matrix-client-r0-register)
+- [x] [13.10.1.1 GET /_matrix/client/r0/devices](https://matrix.org/docs/spec/client_server/latest#get-matrix-client-r0-devices)

internal/backend.go

@@ -3,6 +3,7 @@ package internal
 import (
 	"github.com/nxshock/signaller/internal/models"
 	"github.com/nxshock/signaller/internal/models/createroom"
+	"github.com/nxshock/signaller/internal/models/devices"
 	"github.com/nxshock/signaller/internal/models/rooms"
 	"github.com/nxshock/signaller/internal/models/sync"
 )
@@ -34,6 +35,7 @@ type User interface {
 	SendMessage(room Room, text string) *models.ApiError
 	JoinedRooms() []Room
 	ChangePassword(newPassword string)
+	Devices() []devices.Device
 	Logout(token string)
 	LogoutAll()
 }

internal/backends/memory/user.go

@@ -7,6 +7,7 @@ import (
 	"github.com/nxshock/signaller/internal"
 	"github.com/nxshock/signaller/internal/models"
 	"github.com/nxshock/signaller/internal/models/createroom"
+	"github.com/nxshock/signaller/internal/models/devices"
 	"github.com/nxshock/signaller/internal/models/rooms"
 )
 
@@ -176,6 +177,22 @@ func (user *User) JoinedRooms() []internal.Room {
 	return result
 }
 
+func (user *User) Devices() []devices.Device {
+	user.backend.mutex.Lock()
+	defer user.backend.mutex.Unlock()
+
+	var result []devices.Device
+
+	for _, token := range user.Tokens {
+		device := devices.Device{
+			DeviceID: token.Device}
+
+		result = append(result, device)
+	}
+
+	return result
+}
+
 func (user *User) ChangePassword(newPassword string) {
 	user.mutex.Lock()
 	defer user.mutex.Unlock()

internal/backends/memory/user_test.go

@@ -130,3 +130,16 @@ func TestNewPassword(t *testing.T) {
 	user.ChangePassword(newPassword)
 	assert.Equal(t, newPassword, user.Password())
 }
+
+func TestDevices(t *testing.T) {
+	backend := NewBackend("localhost")
+
+	var expectedDeviceID = "my device"
+
+	user, _, err := backend.Register("user1", "", expectedDeviceID)
+	assert.Nil(t, err)
+
+	devices := user.Devices()
+	assert.Len(t, devices, 1)
+	assert.Equal(t, expectedDeviceID, devices[0].DeviceID)
+}

internal/handlers.go

@@ -276,6 +276,15 @@ func CapabilitiesHandler(w http.ResponseWriter, r *http.Request) {
 	sendJsonResponse(w, http.StatusOK, response)
 }
 
+// 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 {
+		errorResponse(w, models.M_UNKNOWN, http.StatusBadRequest, "wrong method: "+r.Method)
+		return
+	}
+
+}
+
 func sendJsonResponse(w http.ResponseWriter, httpStatus int, data interface{}) error {
 	b, err := json.Marshal(data)
 	if err != nil {

internal/models/devices/devices.go

@@ -0,0 +1,12 @@
+package devices
+
+type Response struct {
+	Devices []Device `json:"devices"` // A list of all registered devices for this user.
+}
+
+type Device struct {
+	DeviceID    string `json:"device_id"`    // Required. Identifier of this device.
+	DisplayName string `json:"display_name"` // Display name set by the user for this device. Absent if no name has been set.
+	LastSeenIP  string `json:"last_seen_ip"` // The IP address where this device was last seen. (May be a few minutes out of date, for efficiency reasons).
+	LastSeenTS  int    `json:"last_seen_ts"` // The timestamp (in milliseconds since the unix epoch) when this devices was last seen. (May be a few minutes out of date, for efficiency reasons).
+}

internal/server.go

@@ -37,6 +37,7 @@ func NewServer(port int) (*Server, error) {
 	router.HandleFunc("/_matrix/client/r0/account/password", PasswordHandler)
 	router.HandleFunc("/_matrix/client/r0/sync", SyncHandler)
 	router.HandleFunc("/_matrix/client/r0/capabilities", CapabilitiesHandler)
+	router.HandleFunc("/_matrix/client/r0/devices", DevicesHandler)
 	router.HandleFunc("/", RootHandler)
 
 	if port <= 0 || port > 65535 {