func tourRunFunc(req cmds.Request, res cmds.Response) {
cfg, err := req.InvocContext().GetConfig()
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
id := tour.TopicID(cfg.Tour.Last)
if len(req.Arguments()) > 0 {
id = tour.TopicID(req.Arguments()[0])
}
w := new(bytes.Buffer)
t, err := tourGet(id)
if err != nil {
// If no topic exists for this id, we handle this error right here.
// To help the user achieve the task, we construct a response
// comprised of...
// 1) a simple error message
// 2) the full list of topics
fmt.Fprintln(w, "ERROR")
fmt.Fprintln(w, err)
fmt.Fprintln(w, "")
fprintTourList(w, tour.TopicID(cfg.Tour.Last))
res.SetOutput(w)
return
}
fprintTourShow(w, t)
res.SetOutput(w)
}
var cmdIpfsTourNext = &cmds.Command{
Helptext: cmds.HelpText{
Tagline: "Show the next IPFS Tour topic",
},
Run: func(req cmds.Request, res cmds.Response) {
w := new(bytes.Buffer)
path := req.InvocContext().ConfigRoot
cfg, err := req.InvocContext().GetConfig()
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
id := tour.NextTopic(tour.TopicID(cfg.Tour.Last))
topic, err := tourGet(id)
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
if err := fprintTourShow(w, topic); err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
// topic changed, not last. write it out.
if string(id) != cfg.Tour.Last {
cfg.Tour.Last = string(id)
err := writeConfig(path, cfg)
if err != nil {