package main import ( "encoding/json" "log" "net/http" "path" "text/template" "github.com/allegro/bigcache/v3" ) var cache *bigcache.BigCache func setCache(key string, entry any) error { data, err := json.Marshal(&entry) if err != nil { return err } return cache.Set(key, data) } func getCache(key string) (any, error) { data, err := cache.Get(key) if err != nil { return nil, err } var decoded any if err = json.Unmarshal(data, &decoded); err != nil { return nil, err } return decoded, nil } func fatal(err any) { log.Fatalf("[ERR] %s\n", err) } func info(s string) { log.Printf("[INFO] %s\n", s) } func write(w http.ResponseWriter, status int, data []byte) { w.WriteHeader(status) w.Write(data) } func securityHeaders(next http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { csp := "default-src 'self'; script-src 'self'; style-src 'self'; img-src 'self' images.genius.com; object-src 'none'" w.Header().Add("content-security-policy", csp) w.Header().Add("referrer-policy", "no-referrer") w.Header().Add("x-content-type-options", "nosniff") next.ServeHTTP(w, r) }) } func render(w http.ResponseWriter, data any) { t, err := template.ParseFiles(path.Join("views/lyrics.tmpl")) if err != nil { w.WriteHeader(http.StatusInternalServerError) return } if err = t.Execute(w, data); err != nil { w.WriteHeader(http.StatusInternalServerError) return } }