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// vim: shiftwidth=4 tabstop=4 noexpandtab
package main
import (
"fmt"
"log"
"net/http"
"os/exec"
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
)
const (
APP_DATA = "/usr/share/birdscan"
)
type WebServer struct {
config *WebConfig
}
type WebConfig struct {
BindAddress string `json:"bind_address"`
BindPort string `json:"bind_port"`
}
func NewWebServer() WebServer {
server := WebServer{}
server.config = &(config.Web)
return server
}
func (server *WebServer) run() {
router := chi.NewRouter()
router.Use(middleware.Logger)
router.Get("/", indexHandler)
router.Get("/css/birdscan.css", cssHandler)
router.Get("/js/birdscan.js", jsHandler)
router.Post("/api/state", stateHandler)
router.Post("/api/single_picture", singlePictureHandler)
router.Post("/api/reboot", rebootHandler)
router.Post("/api/poweroff", poweroffHandler)
log.Println("Binding to 'http://" + server.config.BindAddress + ":" + server.config.BindPort + "'")
log.Fatal(http.ListenAndServe(server.config.BindAddress + ":" + server.config.BindPort, router))
}
func indexHandler(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, fmt.Sprintf("%s/html/index.html", APP_DATA))
}
func cssHandler(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, fmt.Sprintf("%s/css/birdscan.css", APP_DATA))
}
func jsHandler(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, fmt.Sprintf("%s/js/birdscan.js", APP_DATA))
}
func stateHandler(w http.ResponseWriter, r *http.Request) {
known_state := r.FormValue("known_state")
w.Write([]byte(fmt.Sprintf("%s", camera.statemachine.GetStateOnChange(known_state))))
}
func singlePictureHandler(w http.ResponseWriter, r *http.Request) {
camera.statemachine.SendEvent("take_single_picture")
fmt.Fprintf(w, http.StatusText(http.StatusOK))
}
func rebootHandler(w http.ResponseWriter, r *http.Request) {
log.Println("starting reboot")
if config.Flag.Debug {
log.Println("Skipping reboot because of debug mode")
} else {
cmd := exec.Command("/usr/bin/sudo", "/usr/bin/reboot")
err := cmd.Run()
if err != nil {
log.Print(err)
fmt.Fprintf(w, http.StatusText(http.StatusForbidden))
return
}
}
fmt.Fprintf(w, http.StatusText(http.StatusOK))
}
func poweroffHandler(w http.ResponseWriter, r *http.Request) {
log.Println("starting poweroff")
if config.Flag.Debug {
log.Println("Skipping poweroff because of debug mode")
} else {
cmd := exec.Command("/usr/bin/sudo", "/usr/bin/poweroff")
err := cmd.Run()
if err != nil {
log.Print(err)
fmt.Fprintf(w, http.StatusText(http.StatusForbidden))
return
}
}
fmt.Fprintf(w, http.StatusText(http.StatusOK))
}
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