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package main
import (
"context"
"flag"
"fmt"
"log/slog"
"os"
"sync"
"time"
jetstreamClient "github.com/bluesky-social/jetstream/pkg/client"
"github.com/bluesky-social/jetstream/pkg/client/schedulers/parallel"
jsModels "github.com/bluesky-social/jetstream/pkg/models"
"github.com/goccy/go-json"
"github.com/nats-io/nats.go"
"within.website/x/internal"
)
var (
jetStreamURL = flag.String("jetstream-url", "wss://jetstream2.us-east.bsky.network/subscribe", "Jetstream server to subscribe to")
natsURL = flag.String("nats-url", "nats://localhost:4222", "nats url")
)
func main() {
internal.HandleStartup()
slog.Info("starting up",
"jetstream-url", jetStreamURL,
"nats-url", natsURL,
)
nc, err := nats.Connect(*natsURL)
if err != nil {
slog.Error("can't connect to NATS", "err", err)
os.Exit(1)
}
defer nc.Close()
slog.Info("connected to NATS")
jsCfg := jetstreamClient.DefaultClientConfig()
jsCfg.WebsocketURL = *jetStreamURL
jscli, err := jetstreamClient.NewClient(
jsCfg,
slog.With("aspect", "jetstream"),
parallel.NewScheduler(
1,
"amano",
slog.With("aspect", "fan-out"),
handleEvent(nc),
),
)
if err != nil {
slog.Error("can't set up jetstream client", "err", err)
os.Exit(1)
}
defer jscli.Scheduler.Shutdown()
now := time.Now().UnixNano()
if err := jscli.ConnectAndRead(context.Background(), &now); err != nil {
slog.Error("can't connect to jetstream", "err", err)
os.Exit(1)
}
slog.Info("connected to jetstream")
mu := sync.Mutex{}
mu.Lock()
mu.Lock()
}
func handleEvent(nc *nats.Conn) func(ctx context.Context, ev *jsModels.Event) error {
return func(ctx context.Context, ev *jsModels.Event) error {
switch ev.Kind {
case "account":
data, err := json.Marshal(ev.Account)
if err != nil {
return fmt.Errorf("can't marshal account event: %w", err)
}
if err := nc.Publish("amano.account", data); err != nil {
return fmt.Errorf("can't publish account event: %w", err)
}
case "identity":
data, err := json.Marshal(ev.Identity)
if err != nil {
return fmt.Errorf("can't marshal identity event: %w", err)
}
if err := nc.Publish("amano.identity", data); err != nil {
return fmt.Errorf("can't publish identity event: %w", err)
}
case "commit":
subject := fmt.Sprintf("amano.commit.%s", ev.Commit.Collection)
data, err := json.Marshal(ev.Commit)
if err != nil {
return fmt.Errorf("can't marshal commit event: %w", err)
}
m := nats.NewMsg(subject)
m.Data = data
m.Header.Set("bsky-actor-did", ev.Did)
m.Header.Set("bsky-commit-collection", ev.Commit.Collection)
if err := nc.PublishMsg(m); err != nil {
return fmt.Errorf("can't publish %q event: %w", subject, err)
}
}
return nil
}
}
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