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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
package model
import (
"bytes"
"encoding/json"
"fmt"
"io"
)
const (
WEBSOCKET_EVENT_TYPING = "typing"
WEBSOCKET_EVENT_POSTED = "posted"
WEBSOCKET_EVENT_POST_EDITED = "post_edited"
WEBSOCKET_EVENT_POST_DELETED = "post_deleted"
WEBSOCKET_EVENT_POST_UNREAD = "post_unread"
WEBSOCKET_EVENT_CHANNEL_CONVERTED = "channel_converted"
WEBSOCKET_EVENT_CHANNEL_CREATED = "channel_created"
WEBSOCKET_EVENT_CHANNEL_DELETED = "channel_deleted"
WEBSOCKET_EVENT_CHANNEL_RESTORED = "channel_restored"
WEBSOCKET_EVENT_CHANNEL_UPDATED = "channel_updated"
WEBSOCKET_EVENT_CHANNEL_MEMBER_UPDATED = "channel_member_updated"
WEBSOCKET_EVENT_CHANNEL_SCHEME_UPDATED = "channel_scheme_updated"
WEBSOCKET_EVENT_DIRECT_ADDED = "direct_added"
WEBSOCKET_EVENT_GROUP_ADDED = "group_added"
WEBSOCKET_EVENT_NEW_USER = "new_user"
WEBSOCKET_EVENT_ADDED_TO_TEAM = "added_to_team"
WEBSOCKET_EVENT_LEAVE_TEAM = "leave_team"
WEBSOCKET_EVENT_UPDATE_TEAM = "update_team"
WEBSOCKET_EVENT_DELETE_TEAM = "delete_team"
WEBSOCKET_EVENT_RESTORE_TEAM = "restore_team"
WEBSOCKET_EVENT_UPDATE_TEAM_SCHEME = "update_team_scheme"
WEBSOCKET_EVENT_USER_ADDED = "user_added"
WEBSOCKET_EVENT_USER_UPDATED = "user_updated"
WEBSOCKET_EVENT_USER_ROLE_UPDATED = "user_role_updated"
WEBSOCKET_EVENT_MEMBERROLE_UPDATED = "memberrole_updated"
WEBSOCKET_EVENT_USER_REMOVED = "user_removed"
WEBSOCKET_EVENT_PREFERENCE_CHANGED = "preference_changed"
WEBSOCKET_EVENT_PREFERENCES_CHANGED = "preferences_changed"
WEBSOCKET_EVENT_PREFERENCES_DELETED = "preferences_deleted"
WEBSOCKET_EVENT_EPHEMERAL_MESSAGE = "ephemeral_message"
WEBSOCKET_EVENT_STATUS_CHANGE = "status_change"
WEBSOCKET_EVENT_HELLO = "hello"
WEBSOCKET_AUTHENTICATION_CHALLENGE = "authentication_challenge"
WEBSOCKET_EVENT_REACTION_ADDED = "reaction_added"
WEBSOCKET_EVENT_REACTION_REMOVED = "reaction_removed"
WEBSOCKET_EVENT_RESPONSE = "response"
WEBSOCKET_EVENT_EMOJI_ADDED = "emoji_added"
WEBSOCKET_EVENT_CHANNEL_VIEWED = "channel_viewed"
WEBSOCKET_EVENT_PLUGIN_STATUSES_CHANGED = "plugin_statuses_changed"
WEBSOCKET_EVENT_PLUGIN_ENABLED = "plugin_enabled"
WEBSOCKET_EVENT_PLUGIN_DISABLED = "plugin_disabled"
WEBSOCKET_EVENT_ROLE_UPDATED = "role_updated"
WEBSOCKET_EVENT_LICENSE_CHANGED = "license_changed"
WEBSOCKET_EVENT_CONFIG_CHANGED = "config_changed"
WEBSOCKET_EVENT_OPEN_DIALOG = "open_dialog"
WEBSOCKET_EVENT_GUESTS_DEACTIVATED = "guests_deactivated"
WEBSOCKET_EVENT_RECEIVED_GROUP = "received_group"
WEBSOCKET_EVENT_RECEIVED_GROUP_ASSOCIATED_TO_TEAM = "received_group_associated_to_team"
WEBSOCKET_EVENT_RECEIVED_GROUP_NOT_ASSOCIATED_TO_TEAM = "received_group_not_associated_to_team"
WEBSOCKET_EVENT_RECEIVED_GROUP_ASSOCIATED_TO_CHANNEL = "received_group_associated_to_channel"
WEBSOCKET_EVENT_RECEIVED_GROUP_NOT_ASSOCIATED_TO_CHANNEL = "received_group_not_associated_to_channel"
)
type WebSocketMessage interface {
ToJson() string
IsValid() bool
EventType() string
}
type WebsocketBroadcast struct {
OmitUsers map[string]bool `json:"omit_users"` // broadcast is omitted for users listed here
UserId string `json:"user_id"` // broadcast only occurs for this user
ChannelId string `json:"channel_id"` // broadcast only occurs for users in this channel
TeamId string `json:"team_id"` // broadcast only occurs for users in this team
ContainsSanitizedData bool `json:"-"`
ContainsSensitiveData bool `json:"-"`
}
type precomputedWebSocketEventJSON struct {
Event json.RawMessage
Data json.RawMessage
Broadcast json.RawMessage
}
// webSocketEventJSON mirrors WebSocketEvent to make some of its unexported fields serializable
type webSocketEventJSON struct {
Event string `json:"event"`
Data map[string]interface{} `json:"data"`
Broadcast *WebsocketBroadcast `json:"broadcast"`
Sequence int64 `json:"seq"`
}
// **NOTE**: Direct access to WebSocketEvent fields is deprecated. They will be
// made unexported in next major version release. Provided getter functions should be used instead.
type WebSocketEvent struct {
Event string // Deprecated: use EventType()
Data map[string]interface{} // Deprecated: use GetData()
Broadcast *WebsocketBroadcast // Deprecated: use GetBroadcast()
Sequence int64 // Deprecated: use GetSequence()
precomputedJSON *precomputedWebSocketEventJSON
}
// PrecomputeJSON precomputes and stores the serialized JSON for all fields other than Sequence.
// This makes ToJson much more efficient when sending the same event to multiple connections.
func (ev *WebSocketEvent) PrecomputeJSON() *WebSocketEvent {
copy := ev.Copy()
event, _ := json.Marshal(copy.Event)
data, _ := json.Marshal(copy.Data)
broadcast, _ := json.Marshal(copy.Broadcast)
copy.precomputedJSON = &precomputedWebSocketEventJSON{
Event: json.RawMessage(event),
Data: json.RawMessage(data),
Broadcast: json.RawMessage(broadcast),
}
return copy
}
func (ev *WebSocketEvent) Add(key string, value interface{}) {
ev.Data[key] = value
}
func NewWebSocketEvent(event, teamId, channelId, userId string, omitUsers map[string]bool) *WebSocketEvent {
return &WebSocketEvent{Event: event, Data: make(map[string]interface{}),
Broadcast: &WebsocketBroadcast{TeamId: teamId, ChannelId: channelId, UserId: userId, OmitUsers: omitUsers}}
}
func (ev *WebSocketEvent) Copy() *WebSocketEvent {
copy := &WebSocketEvent{
Event: ev.Event,
Data: ev.Data,
Broadcast: ev.Broadcast,
Sequence: ev.Sequence,
precomputedJSON: ev.precomputedJSON,
}
return copy
}
func (ev *WebSocketEvent) GetData() map[string]interface{} {
return ev.Data
}
func (ev *WebSocketEvent) GetBroadcast() *WebsocketBroadcast {
return ev.Broadcast
}
func (ev *WebSocketEvent) GetSequence() int64 {
return ev.Sequence
}
func (ev *WebSocketEvent) SetEvent(event string) *WebSocketEvent {
copy := ev.Copy()
copy.Event = event
return copy
}
func (ev *WebSocketEvent) SetData(data map[string]interface{}) *WebSocketEvent {
copy := ev.Copy()
copy.Data = data
return copy
}
func (ev *WebSocketEvent) SetBroadcast(broadcast *WebsocketBroadcast) *WebSocketEvent {
copy := ev.Copy()
copy.Broadcast = broadcast
return copy
}
func (ev *WebSocketEvent) SetSequence(seq int64) *WebSocketEvent {
copy := ev.Copy()
copy.Sequence = seq
return copy
}
func (ev *WebSocketEvent) IsValid() bool {
return ev.Event != ""
}
func (ev *WebSocketEvent) EventType() string {
return ev.Event
}
func (ev *WebSocketEvent) ToJson() string {
if ev.precomputedJSON != nil {
return fmt.Sprintf(`{"event": %s, "data": %s, "broadcast": %s, "seq": %d}`, ev.precomputedJSON.Event, ev.precomputedJSON.Data, ev.precomputedJSON.Broadcast, ev.Sequence)
}
b, _ := json.Marshal(webSocketEventJSON{
ev.Event,
ev.Data,
ev.Broadcast,
ev.Sequence,
})
return string(b)
}
func WebSocketEventFromJson(data io.Reader) *WebSocketEvent {
var ev WebSocketEvent
var o webSocketEventJSON
if err := json.NewDecoder(data).Decode(&o); err != nil {
return nil
}
ev.Event = o.Event
if u, ok := o.Data["user"]; ok {
// We need to convert to and from JSON again
// because the user is in the form of a map[string]interface{}.
buf, err := json.Marshal(u)
if err != nil {
return nil
}
o.Data["user"] = UserFromJson(bytes.NewReader(buf))
}
ev.Data = o.Data
ev.Broadcast = o.Broadcast
ev.Sequence = o.Sequence
return &ev
}
// WebSocketResponse represents a response received through the WebSocket
// for a request made to the server. This is available through the ResponseChannel
// channel in WebSocketClient.
type WebSocketResponse struct {
Status string `json:"status"` // The status of the response. For example: OK, FAIL.
SeqReply int64 `json:"seq_reply,omitempty"` // A counter which is incremented for every response sent.
Data map[string]interface{} `json:"data,omitempty"` // The data contained in the response.
Error *AppError `json:"error,omitempty"` // A field that is set if any error has occurred.
}
func (m *WebSocketResponse) Add(key string, value interface{}) {
m.Data[key] = value
}
func NewWebSocketResponse(status string, seqReply int64, data map[string]interface{}) *WebSocketResponse {
return &WebSocketResponse{Status: status, SeqReply: seqReply, Data: data}
}
func NewWebSocketError(seqReply int64, err *AppError) *WebSocketResponse {
return &WebSocketResponse{Status: STATUS_FAIL, SeqReply: seqReply, Error: err}
}
func (m *WebSocketResponse) IsValid() bool {
return m.Status != ""
}
func (m *WebSocketResponse) EventType() string {
return WEBSOCKET_EVENT_RESPONSE
}
func (m *WebSocketResponse) ToJson() string {
b, _ := json.Marshal(m)
return string(b)
}
func WebSocketResponseFromJson(data io.Reader) *WebSocketResponse {
var o *WebSocketResponse
json.NewDecoder(data).Decode(&o)
return o
}
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