package main
import (
"crypto/rand"
"encoding/hex"
"fmt"
"log/slog"
"net/http"
"time"
"github.com/starfederation/datastar/sdk/go/datastar"
)
const (
cdn = "https://cdn.jsdelivr.net/gh/starfederation/datastar@develop/bundles/datastar.js"
port = 9001
)
func main() {
mux := http.NewServeMux()
style := "display:flex;flex-direction:column;background-color:oklch(25.3267% 0.015896 252.417568);height:100vh;justify-content:center;align-items:center;font-family:ui-sans-serif, system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';"
page := []byte(fmt.Sprintf(`
`, cdn, style, datastar.GetSSE("/stream")))
mux.HandleFunc("GET /", func(w http.ResponseWriter, r *http.Request) {
w.Write(page)
})
mux.HandleFunc("GET /stream", func(w http.ResponseWriter, r *http.Request) {
ticker := time.NewTicker(100 * time.Millisecond)
defer ticker.Stop()
sse := datastar.NewSSE(w, r)
for {
select {
case <-r.Context().Done():
slog.Debug("Client connection closed")
return
case <-ticker.C:
bytes := make([]byte, 3)
if _, err := rand.Read(bytes); err != nil {
slog.Error("Error generating random bytes: ", slog.String("error", err.Error()))
return
}
hexString := hex.EncodeToString(bytes)
frag := fmt.Sprintf(`%s`, hexString, hexString, hexString)
sse.MergeFragments(frag)
}
}
})
slog.Info(fmt.Sprintf("Server starting at 0.0.0.0:%d", port))
if err := http.ListenAndServe(fmt.Sprintf("0.0.0.0:%d", port), mux); err != nil {
slog.Error("Error starting server:", slog.String("error", err.Error()))
}
}