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server.go
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server.go
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package main
import (
"bytes"
"encoding/base64"
"encoding/json"
"log"
"net/http"
"path/filepath"
"strings"
"github.com/machinebox/sdk-go/facebox"
"github.com/matryer/way"
)
// Server is the app server.
type Server struct {
assets string
facebox *facebox.Client
router *way.Router
}
// NewServer makes a new Server.
func NewServer(assets string, facebox *facebox.Client) *Server {
srv := &Server{
assets: assets,
facebox: facebox,
router: way.NewRouter(),
}
srv.router.Handle(http.MethodGet, "/assets/", Static("/assets/", assets))
srv.router.HandleFunc(http.MethodPost, "/webFaceID", srv.handlewebFaceID)
srv.router.HandleFunc(http.MethodGet, "/", srv.handleIndex)
return srv
}
func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
s.router.ServeHTTP(w, r)
}
func (s *Server) handleIndex(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, filepath.Join(s.assets, "index.html"))
}
func (s *Server) handlewebFaceID(w http.ResponseWriter, r *http.Request) {
img := r.FormValue("imgBase64")
b64data := img[strings.IndexByte(img, ',')+1:]
imgDec, err := base64.StdEncoding.DecodeString(b64data)
if err != nil {
log.Printf("[ERROR] Error decoding the image %v\n", err)
http.Error(w, "can not decode the image", http.StatusInternalServerError)
return
}
faces, err := s.facebox.Check(bytes.NewReader(imgDec))
if err != nil {
log.Printf("[ERROR] Error on facebox %v\n", err)
http.Error(w, "something went wrong verifying the faces", http.StatusInternalServerError)
return
}
var response struct {
FaceLen int `json:"faces_len"`
Matched bool `json:"matched"`
Name string `json:"name"`
}
response.FaceLen = len(faces)
if len(faces) == 1 {
response.Matched = faces[0].Matched
response.Name = faces[0].Name
}
w.Header().Set("Content-Type", "application/json")
if err := json.NewEncoder(w).Encode(response); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
// Static gets a static file server for the specified path.
func Static(stripPrefix, dir string) http.Handler {
h := http.StripPrefix(stripPrefix, http.FileServer(http.Dir(dir)))
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
h.ServeHTTP(w, r)
})
}