func rootHandler(w traffic.ResponseWriter, r *traffic.Request) {
response := map[string]string{
"version": VERSION,
}
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(response)
}
func ImageHandler(w traffic.ResponseWriter, r *traffic.Request) {
// output the image with the correct content-type
w.Header().Set("Content-Type", "image/jpeg")
// at this point we can safely assume that the image file already exists
if image_data, err := ioutil.ReadFile(w.GetVar("filename").(string)); err != nil {
panic(err)
} else {
w.Write(image_data)
}
}
func codesHandler(w traffic.ResponseWriter, r *traffic.Request) {
code := r.Param("code")
url := fmt.Sprintf("%s%s", baseUrl, code)
grid, err := qrencode.Encode(url, qrencode.ECLevelQ)
if err != nil {
panic(err)
}
w.Header().Set("Content-Type", "image/png")
png.Encode(w, grid.Image(8))
}
func SetDefaultHeaders(w traffic.ResponseWriter, r *traffic.Request) {
w.Header().Set("Cerebellum-Version", VERSION)
w.Header().Set("Content-Type", "application/json; charset=utf-8")
}
func PoweredByHandler(w traffic.ResponseWriter, r *traffic.Request) {
w.Header().Set("X-Powered-By", "Grumpy cat")
}
func addTimeHeader(w traffic.ResponseWriter, r *traffic.Request) {
t := fmt.Sprintf("%s", time.Now())
w.Header().Add("X-APP-TIME", t)
}
func addAppNameHeader(w traffic.ResponseWriter, r *traffic.Request) {
w.Header().Add("X-APP-NAME", "My App")
}
func sendJpeg(w traffic.ResponseWriter, data []byte) {
w.Header().Set("Content-Type", "image/jpeg")
w.Header().Set("Content-Length", strconv.Itoa(len(data)))
w.Write(data)
}
func addLocationHeader(w traffic.ResponseWriter, r *traffic.Request) {
t := fmt.Sprintf("tel://%s", w.GetVar("phone"))
w.Header().Add("Location", t)
w.WriteHeader(http.StatusTemporaryRedirect)
}