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package main
import (
"embed"
"flag"
"io/fs"
"log/slog"
"net/http" // sure, we could use fiber... but for now lets' stick with net/http to keep dependencies to a minimum
"os"
)
//go:embed static/*
var staticFS embed.FS
func loggingMiddleware(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
slog.Info("request", "method", r.Method, "path", r.URL.Path)
next.ServeHTTP(w, r)
})
}
func cacheMiddleware(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Cache-Control", "public, max-age=3600")
next.ServeHTTP(w, r)
})
}
func main() {
addr := flag.String("addr", ":8080", "listen address")
flag.Parse()
logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
slog.SetDefault(logger)
/* strip "static/" prefix so files are served from root */
subFS, err := fs.Sub(staticFS, "static")
if err != nil {
slog.Error("failed to create sub filesystem", "error", err)
os.Exit(1)
}
fileServer := http.FileServer(http.FS(subFS))
http.Handle("/", loggingMiddleware(cacheMiddleware(fileServer)))
slog.Info("starting server", "addr", *addr)
if err := http.ListenAndServe(*addr, nil); err != nil {
slog.Error("server failed", "error", err)
os.Exit(1)
}
}
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