Revert "Umgeschrieben auf gorilla"

This reverts commit 318442cfaf.

app.go

@@ -1,70 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"log"
-	"net/http"
-
-	"github.com/google/uuid"
-	"github.com/gorilla/mux"
-	"github.com/jinzhu/gorm"
-	_ "github.com/jinzhu/gorm/dialects/postgres"
-)
-
-type Besucher struct {
-	ID      string `json:"id"`
-	Name    string `json:"name"`
-	Message string `json:"message"`
-	Come    bool   `json:"come"`
-}
-
-type App struct {
-	db *gorm.DB
-	r  *mux.Router
-}
-
-func (a *App) start() {
-	a.db.AutoMigrate()
-
-	a.r.HandleFunc("/besucher", a.getAllBesucher).Methods("GET")
-	a.r.HandleFunc("/besucher", a.addBesucher).Methods("POST")
-	log.Fatal(http.ListenAndServe(":3001", a.r))
-}
-
-func (a *App) getAllBesucher(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Content-Type", "application/json")
-	var all []Besucher
-	err := a.db.Find(&all).Error
-	if err != nil {
-		sendErr(w, http.StatusInternalServerError, err.Error())
-		return
-	}
-	err = json.NewEncoder(w).Encode(all)
-	if err != nil {
-		sendErr(w, http.StatusInternalServerError, err.Error())
-	}
-
-}
-
-func (a *App) addBesucher(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Content-Type", "application/json")
-	var s Besucher
-	err := json.NewDecoder(r.Body).Decode(&s)
-	if err != nil {
-		sendErr(w, http.StatusBadRequest, err.Error())
-		return
-	}
-	s.ID = uuid.New().String()
-	err = a.db.Save(&s).Error
-	if err != nil {
-		sendErr(w, http.StatusInternalServerError, err.Error())
-
-	} else {
-		w.WriteHeader(http.StatusCreated)
-	}
-}
-
-func sendErr(w http.ResponseWriter, code int, message string) {
-	resp, _ := json.Marshal(map[string]string{"error": message})
-	http.Error(w, string(resp), code)
-}