package main import ( "context" "encoding/json" "errors" "os" "os/signal" "strings" "text/template" "github.com/mattn/go-mastodon" "github.com/urfave/cli" ) // SimpleJSON is a struct for output JSON for data to be simple used type SimpleJSON struct { ID int64 `json:"id"` Username string `json:"username"` Acct string `json:"acct"` Avatar string `json:"avatar"` Content string `json:"content"` } func checkFlag(f ...bool) bool { n := 0 for _, on := range f { if on { n++ } } return n > 1 } func cmdStream(c *cli.Context) error { asJSON := c.Bool("json") asSimpleJSON := c.Bool("simplejson") asFormat := c.String("template") if checkFlag(asJSON, asSimpleJSON, asFormat != "") { return errors.New("cannot speicify two or three options in --json/--simplejson/--template") } tx, err := template.New("mstdn").Funcs(template.FuncMap{ "nl": func(s string) string { return s + "\n" }, "text": func(s string) string { return textContent(s) }, }).Parse(asFormat) if err != nil { return err } client := c.App.Metadata["client"].(*mastodon.Client) config := c.App.Metadata["config"].(*mastodon.Config) ctx, cancel := context.WithCancel(context.Background()) defer cancel() sc := make(chan os.Signal, 1) signal.Notify(sc, os.Interrupt) var q chan mastodon.Event t := c.String("type") if t == "public" { q, err = client.StreamingPublic(ctx, false) } else if t == "" || t == "public/local" { q, err = client.StreamingPublic(ctx, true) } else if strings.HasPrefix(t, "user:") { q, err = client.StreamingUser(ctx) } else if strings.HasPrefix(t, "hashtag:") { q, err = client.StreamingHashtag(ctx, t[8:], false) } else { return errors.New("invalid type") } if err != nil { return err } go func() { <-sc close(q) cancel() }() c.App.Metadata["signal"] = sc s := newScreen(config) for e := range q { if asJSON { json.NewEncoder(c.App.Writer).Encode(e) } else if asSimpleJSON { if t, ok := e.(*mastodon.UpdateEvent); ok { json.NewEncoder(c.App.Writer).Encode(&SimpleJSON{ ID: t.Status.ID, Username: t.Status.Account.Username, Acct: t.Status.Account.Acct, Avatar: t.Status.Account.AvatarStatic, Content: textContent(t.Status.Content), }) } } else if asFormat != "" { tx.ExecuteTemplate(c.App.Writer, "mstdn", e) } else { switch t := e.(type) { case *mastodon.UpdateEvent: s.displayStatus(c.App.Writer, t.Status) case *mastodon.NotificationEvent: // TODO s.displayStatus(c.App.Writer, t.Notification.Status) case *mastodon.ErrorEvent: s.displayError(c.App.Writer, t) } } } return nil }