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)
}
