func (f *Controller) sendChannelEvent(cml *models.ChannelMessageList, cm *models.ChannelMessage, eventName string) error {
cmc, err := cm.BuildEmptyMessageContainer()
if err != nil {
return err
}
return f.publishToChannel(cml.ChannelId, eventName, cmc)
}
// MessageUpdated controls message updated status
// if an error occurred , returns error otherwise returns nil
func (f *Controller) MessageUpdated(cm *models.ChannelMessage) error {
if len(cm.Token) == 0 {
if err := cm.ById(cm.Id); err != nil {
return err
}
}
if err := f.sendInstanceEvent(cm, cm, UpdateInstanceEventName); err != nil {
f.log.Error(err.Error())
return err
}
return nil
}
func UpdateInstance(m *models.ChannelMessage, eventName string, body interface{}) error {
// While sending message instance updates, instead of creating new PubNub channel for each message
// we are sending the events to parent channels. For this reason, we need channel tokens.
// For public messages we are sending instance events to each message's group channel
c, err := m.FetchParentChannel()
if err != nil {
return err
}
request := map[string]interface{}{
"token": m.Token,
"eventName": eventName,
"body": body,
"messageId": m.Id,
"channelToken": c.Token,
}
return bongo.B.Emit("dispatcher_message_updated", request)
}
func UpdatePost(cm *models.ChannelMessage, token string) (*models.ChannelMessage, error) {
cm.Body = "after update"
url := fmt.Sprintf("/message/%d", cm.Id)
cmI, err := sendModelWithAuth("POST", url, cm, token)
if err != nil {
return nil, err
}
return cmI.(*models.ChannelMessage), nil
}
func Create(u *url.URL, h http.Header, reply *models.ChannelMessage, c *models.Context) (int, http.Header, interface{}, error) {
parentId, err := request.GetURIInt64(u, "id")
if err != nil {
return response.NewBadRequest(err)
}
// fetch the parent message
parent, err := models.Cache.Message.ById(parentId)
if err != nil {
return response.NewBadRequest(err)
}
parentChannel, err := models.Cache.Channel.ById(parent.InitialChannelId)
if err != nil {
return response.NewBadRequest(err)
}
canOpen, err := parentChannel.CanOpen(c.Client.Account.Id)
if err != nil {
return response.NewBadRequest(err)
}
if !canOpen {
return response.NewAccessDenied(models.ErrCannotOpenChannel)
}
// first create reply as a message
reply.TypeConstant = models.ChannelMessage_TYPE_REPLY
// set initial channel id for message creation
reply.InitialChannelId = parent.InitialChannelId
reply.AccountId = c.Client.Account.Id
if err := reply.Create(); err != nil {
// todo this should be internal server error
return response.NewBadRequest(err)
}
// then add this message as a reply to a parent message
mr := models.NewMessageReply()
mr.MessageId = parentId
mr.ReplyId = reply.Id
mr.CreatedAt = reply.CreatedAt
mr.ClientRequestId = reply.ClientRequestId
if err := mr.Create(); err != nil {
// todo this should be internal server error
return response.NewBadRequest(err)
}
return response.HandleResultAndError(
reply.BuildEmptyMessageContainer(),
)
}
func Update(u *url.URL, h http.Header, req *models.ChannelMessage, c *models.Context) (int, http.Header, interface{}, error) {
if !c.IsLoggedIn() {
return response.NewBadRequest(models.ErrAccessDenied)
}
id, err := request.GetURIInt64(u, "id")
if err != nil {
return response.NewBadRequest(err)
}
body := req.Body
payload := req.Payload
if err := req.ById(id); err != nil {
if err == bongo.RecordNotFound {
return response.NewNotFound()
}
return response.NewBadRequest(err)
}
if req.AccountId != c.Client.Account.Id {
isAdmin, err := modelhelper.IsAdmin(c.Client.Account.Nick, c.GroupName)
if err != nil {
return response.NewBadRequest(err)
}
if !isAdmin {
return response.NewBadRequest(models.ErrAccessDenied)
}
}
if req.Id == 0 {
return response.NewBadRequest(err)
}
req.Body = body
req.Payload = payload
if err := req.Update(); err != nil {
return response.NewBadRequest(err)
}
cmc := models.NewChannelMessageContainer()
return response.HandleResultAndError(cmc, cmc.Fetch(id, request.GetQuery(u)))
}
func Create(u *url.URL, h http.Header, req *models.ChannelMessage, c *models.Context) (int, http.Header, interface{}, error) {
if !c.IsLoggedIn() {
return response.NewBadRequest(models.ErrAccessDenied)
}
channelId, err := fetchInitialChannelId(u, c)
if err != nil {
return response.NewBadRequest(err)
}
ch := models.NewChannel()
if err := ch.ById(channelId); err != nil {
return response.NewBadRequest(models.ErrChannelNotFound)
}
canOpen, err := ch.CanOpen(c.Client.Account.Id)
if err != nil {
return response.NewBadRequest(err)
}
if !canOpen {
return response.NewBadRequest(models.ErrCannotOpenChannel)
}
// override message type
// all of the messages coming from client-side
// should be marked as POST
req.TypeConstant = models.ChannelMessage_TYPE_POST
req.InitialChannelId = channelId
req.AccountId = c.Client.Account.Id
if req.Payload == nil {
req.Payload = gorm.Hstore{}
}
if c.Client.Account.IsShareLocationEnabled() {
// gets the IP of the Client
// and adds it to the payload of the ChannelMessage
location := parseLocation(c)
req.Payload["location"] = location
}
if err := checkThrottle(channelId, req.AccountId); err != nil {
return response.NewBadRequest(err)
}
if err := req.Create(); err != nil {
// todo this should be internal server error
return response.NewBadRequest(err)
}
cml := models.NewChannelMessageList()
// override channel id
cml.ChannelId = channelId
cml.MessageId = req.Id
cml.ClientRequestId = req.ClientRequestId
if err := cml.Create(); err != nil && !models.IsUniqueConstraintError(err) {
// todo this should be internal server error
return response.NewBadRequest(err)
}
cmc := models.NewChannelMessageContainer()
err = cmc.Fetch(req.Id, request.GetQuery(u))
if err != nil {
return response.NewBadRequest(err)
}
// assign client request id back to message response because
// client uses it for latency compansation
cmc.Message.ClientRequestId = req.ClientRequestId
return response.HandleResultAndError(cmc, err)
}