// HandleChannel handles channel operations
func (c *Controller) HandleChannel(channel *models.Channel) error {
if channel.TypeConstant != models.Channel_TYPE_GROUP {
return nil
}
chans, err := channel.FetchAllChannelsOfGroup()
if err != nil {
return err
}
var errs *multierror.Error
for _, ch := range chans {
// we'r gonna innore all `not found` errors while deleting datas
if err := ch.Delete(); err != nil && err != bongo.RecordNotFound {
errs = multierror.Append(errs, err)
}
if err := ch.DeleteChannelParticipants(); err != nil {
return err
}
}
if errs.ErrorOrNil() != nil {
return errs
}
return nil
}
func Update(u *url.URL, h http.Header, req *models.Channel, c *models.Context) (int, http.Header, interface{}, error) {
if !c.IsLoggedIn() {
return response.NewBadRequest(models.ErrNotLoggedIn)
}
id, err := request.GetURIInt64(u, "id")
if err != nil {
return response.NewBadRequest(err)
}
req.Id = id
if req.Id == 0 {
return response.NewBadRequest(err)
}
existingOne, err := models.Cache.Channel.ById(id)
if err != nil {
return response.NewBadRequest(err)
}
participant, err := existingOne.IsParticipant(c.Client.Account.Id)
if err != nil {
return response.NewBadRequest(err)
}
if !participant {
return response.NewBadRequest(models.ErrAccountIsNotParticipant)
}
// if user is participant in the channel, then user can update only purpose of the channel
// other fields cannot be updated by participant or anyone else. Only creator can update
// purpose and other fields of the channel
if participant {
if req.Purpose != "" {
existingOne.Purpose = req.Purpose
}
}
// if user is the creator of the channel, then can update all fields of the channel
if existingOne.CreatorId == c.Client.Account.Id {
if req.Name != "" {
existingOne.Name = req.Name
}
// some of the channels stores sparse data
existingOne.Payload = req.Payload
}
// update channel
if err := existingOne.Update(); err != nil {
return response.NewBadRequest(err)
}
// generate container data
cc := models.NewChannelContainer()
if err := cc.PopulateWith(*existingOne, c.Client.Account.Id); err != nil {
return response.NewBadRequest(err)
}
return response.NewOK(cc)
}
// makeSureMembership checks if the incoming account is a member of the group
// channel that is persisted within incoming session data
func makeSureMembership(groupChannel *models.Channel, accountId int64) error {
isMember, err := models.Cache.Participant.ByChannelIdAndAccountId(groupChannel.Id, accountId)
if err != nil {
return err
}
// we dont need to do anything if the user is a member of group channel
if isMember {
return nil
}
_, err = groupChannel.AddParticipant(accountId)
if err != nil && err != models.ErrAccountIsAlreadyInTheChannel {
return err
}
return models.Cache.Participant.SetToCache(groupChannel.Id, accountId)
}
func handleChannelResponse(c models.Channel, q *request.Query) (int, http.Header, interface{}, error) {
// add troll mode filter
if c.MetaBits.Is(models.Troll) && !q.ShowExempt {
return response.NewNotFound()
}
canOpen, err := c.CanOpen(q.AccountId)
if err != nil {
return response.NewBadRequest(err)
}
if !canOpen {
cp := models.NewChannelParticipant()
cp.ChannelId = c.Id
isInvited, err := cp.IsInvited(q.AccountId)
if err != nil {
return response.NewBadRequest(err)
}
if !isInvited {
return response.NewAccessDenied(
fmt.Errorf(
"account (%d) tried to retrieve the unattended channel (%d)",
q.AccountId,
c.Id,
),
)
}
}
cc := models.NewChannelContainer()
if err := cc.Fetch(c.GetId(), q); err != nil {
return response.NewBadRequest(err)
}
cc.AddIsParticipant(q.AccountId)
// TODO this should be in the channel cache by default
cc.AddLastMessage(q.AccountId)
cc.AddUnreadCount(q.AccountId)
return response.HandleResultAndError(cc, cc.Err)
}
func Create(u *url.URL, h http.Header, req *models.Channel, context *models.Context) (int, http.Header, interface{}, error) {
// only logged in users can create a channel
if !context.IsLoggedIn() {
return response.NewBadRequest(models.ErrNotLoggedIn)
}
// get group name from context
req.GroupName = context.GroupName
req.CreatorId = context.Client.Account.Id
if req.PrivacyConstant == "" {
req.PrivacyConstant = models.Channel_PRIVACY_PRIVATE
// if group is koding, then make it public, because it was public before
if req.GroupName == models.Channel_KODING_NAME {
req.PrivacyConstant = models.Channel_PRIVACY_PUBLIC
}
}
if req.TypeConstant == "" {
req.TypeConstant = models.Channel_TYPE_TOPIC
}
if err := validateChannelRequest(req); err != nil {
return response.NewBadRequest(err)
}
if err := req.Create(); err != nil {
return response.NewBadRequest(err)
}
if _, err := req.AddParticipant(req.CreatorId); err != nil {
// channel create works as idempotent, that channel might have been created before
if err != models.ErrAccountIsAlreadyInTheChannel {
return response.NewBadRequest(err)
}
}
cc := models.NewChannelContainer()
if err := cc.PopulateWith(*req, context.Client.Account.Id); err != nil {
return response.NewBadRequest(err)
}
return response.NewOK(cc)
}
func (f *Controller) fetchNotifiedParticipantIds(c *models.Channel, pe *models.ParticipantEvent, eventName string) ([]int64, error) {
notifiedParticipantIds := make([]int64, 0)
// notify added/removed participants
for _, participant := range pe.Participants {
notifiedParticipantIds = append(notifiedParticipantIds, participant.AccountId)
}
// When a user is removed from a private channel notify all channel participants to
// make them update their sidebar channel list.
if eventName == RemovedFromChannelEventName {
if c.TypeConstant == models.Channel_TYPE_PRIVATE_MESSAGE ||
c.TypeConstant == models.Channel_TYPE_COLLABORATION {
participantIds, err := c.FetchParticipantIds(&request.Query{})
if err != nil {
return notifiedParticipantIds, err
}
notifiedParticipantIds = append(notifiedParticipantIds, participantIds...)
}
}
return notifiedParticipantIds, nil
}
func Delete(u *url.URL, h http.Header, req *models.Channel, context *models.Context) (int, http.Header, interface{}, error) {
if !context.IsLoggedIn() {
return response.NewBadRequest(models.ErrNotLoggedIn)
}
id, err := request.GetURIInt64(u, "id")
if err != nil {
return response.NewBadRequest(err)
}
if err := req.ById(id); err != nil {
return response.NewBadRequest(err)
}
if req.TypeConstant == models.Channel_TYPE_GROUP {
return response.NewBadRequest(errors.New("You can not delete group channel"))
}
canOpen, err := req.CanOpen(context.Client.Account.Id)
if err != nil {
return response.NewBadRequest(err)
}
if !canOpen {
return response.NewBadRequest(models.ErrCannotOpenChannel)
}
// TO-DO
// add super-admin check here
if req.CreatorId != context.Client.Account.Id {
isAdmin, err := modelhelper.IsAdmin(context.Client.Account.Nick, req.GroupName)
if err != nil {
return response.NewBadRequest(err)
}
if !isAdmin {
return response.NewAccessDenied(models.ErrAccessDenied)
}
}
if err := req.Delete(); err != nil {
return response.NewBadRequest(err)
}
// yes it is deleted but not removed completely from our system
return response.NewDeleted()
}