go-mastodon/cmd/mstdn/cmd_stream.go

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package main
import (
"context"
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"encoding/json"
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"errors"
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"os"
"os/signal"
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"strings"
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"github.com/mattn/go-mastodon"
"github.com/urfave/cli"
)
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type SimpleJSON struct {
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ID int64 `json:"id"`
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Username string `json:"username"`
Acct string `json:"acct"`
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Avatar string `json:"avatar"`
Content string `json:"content"`
}
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func cmdStream(c *cli.Context) error {
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asJSON := c.Bool("json")
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asSimpleJSON := c.Bool("simplejson")
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client := c.App.Metadata["client"].(*mastodon.Client)
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config := c.App.Metadata["config"].(*mastodon.Config)
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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sc := make(chan os.Signal, 1)
signal.Notify(sc, os.Interrupt)
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var q chan mastodon.Event
var err error
t := c.String("type")
if t == "public" {
q, err = client.StreamingPublic(ctx)
} else if t == "" || t == "public/local" {
q, err = client.StreamingPublicLocal(ctx)
} else if strings.HasPrefix(t, "user:") {
q, err = client.StreamingUser(ctx, t[5:])
} else if strings.HasPrefix(t, "hashtag:") {
q, err = client.StreamingHashtag(ctx, t[8:])
} else {
return errors.New("invalid type")
}
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if err != nil {
return err
}
go func() {
<-sc
cancel()
close(q)
}()
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s := newScreen(config)
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for e := range q {
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if asJSON {
json.NewEncoder(c.App.Writer).Encode(e)
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} else if asSimpleJSON {
if t, ok := e.(*mastodon.UpdateEvent); ok {
json.NewEncoder(c.App.Writer).Encode(&SimpleJSON{
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ID: t.Status.ID,
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Username: t.Status.Account.Username,
Acct: t.Status.Account.Acct,
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Avatar: t.Status.Account.AvatarStatic,
Content: textContent(t.Status.Content),
})
}
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} else {
switch t := e.(type) {
case *mastodon.UpdateEvent:
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s.displayStatus(c.App.Writer, t.Status)
case *mastodon.NotificationEvent:
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// TODO s.displayStatus(c.App.Writer, t.Notification.Status)
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case *mastodon.ErrorEvent:
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s.displayError(c.App.Writer, t)
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}
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}
}
return nil
}