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package main
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"os"
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"spargcom/senuma/database"
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"spargcom/senuma/domain"
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"strconv"
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log "github.com/sirupsen/logrus"
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"github.com/gorilla/mux"
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)
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func main() {
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file, err := os.OpenFile("senuma.log", os.O_CREATE|os.O_APPEND, 0644)
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if err != nil {
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log.Fatal(err)
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}
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defer file.Close()
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log.SetOutput(file)
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log.SetLevel(log.InfoLevel)
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r := mux.NewRouter()
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r.Use(CORS)
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r.HandleFunc("/api/artikel", createArtikelHandler).Methods("POST")
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r.HandleFunc("/api/artikel/{id:[0-9]+}", deleteArtikelHandler).Methods("DELETE")
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r.HandleFunc("/api/artikel", showArtikelHandler).Methods("GET")
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r.HandleFunc("/api/artikel/{id:[0-9]+}", getArtikelHandler).Methods("GET")
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r.HandleFunc("/api/artikel/{id:[0-9]+}", updateArtikelHandler).Methods("PUT")
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//r.HandleFunc("/groups", createGroupHandler).Methods("POST")
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//r.HandleFunc("/users", createUserHandler).Methods("POST")
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//r.HandleFunc("/accounts", createAccountHandler).Methods("POST")
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//r.HandleFunc("/tunnels", createTunnelHandler).Methods("POST")
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http.Handle("/", r)
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http.ListenAndServe(":8081", r)
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log.Info("running on localhost, Port 8081")
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}
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func createArtikelHandler(writer http.ResponseWriter, req *http.Request) {
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body, err := ioutil.ReadAll(req.Body)
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if err != nil {
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writer.WriteHeader(http.StatusBadRequest)
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}
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var art domain.Artikel
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json.Unmarshal(body, &art)
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log.Println("Bezeichnung = ", art.Bezeichnung)
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log.Println("externe Art-Nr = ", art.ArtNrExt)
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log.Info("creating new Artikel", art.Bezeichnung)
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res, err := database.CreateArtikel(art)
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if err != nil {
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writer.WriteHeader(http.StatusInternalServerError)
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}
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b, err := json.Marshal(res)
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if err != nil {
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log.Fatal("Error: ", err)
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}
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location := fmt.Sprintf("%s/%d", req.URL.String(), res.Id)
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writer.Header().Set("Location:", location)
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writer.Header().Set("Content-Type", "application/json")
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writer.WriteHeader(http.StatusCreated)
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writer.Write(b)
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}
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func deleteArtikelHandler(writer http.ResponseWriter, req *http.Request) {
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artikelId, _ := strconv.ParseUint(mux.Vars(req)["id"], 10, 64)
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log.Info("Deleting artikel with ID", artikelId)
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_, err := database.DeleteArtikel(artikelId)
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if err != nil {
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log.Fatal("Error: Delete could not be executed", err)
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}
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writer.WriteHeader(http.StatusNoContent)
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}
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func showArtikelHandler(writer http.ResponseWriter, req *http.Request) {
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res, err := database.ShowArtikel()
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if err != nil {
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log.Fatal("Error: Artikel can't be shown ", err)
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writer.WriteHeader(http.StatusInternalServerError)
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}
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b, err := json.Marshal(res)
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if err != nil {
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log.Fatal("Error: ", err)
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}
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location := req.URL.String()
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writer.Header().Set("Location:", location)
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writer.Header().Set("Content-Type", "application/json")
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writer.WriteHeader(http.StatusOK)
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writer.Write(b)
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}
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func getArtikelHandler(writer http.ResponseWriter, req *http.Request) {
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artikelId, _ := strconv.ParseUint(mux.Vars(req)["id"], 10, 64)
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res, err := database.GetArtikel(artikelId)
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if err != nil {
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log.Fatal("Error: Artikel can't be shown ", err)
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writer.WriteHeader(http.StatusInternalServerError)
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}
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b, err := json.Marshal(res)
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if err != nil {
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log.Fatal("Error: ", err)
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}
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location := req.URL.String()
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writer.Header().Set("Location:", location)
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writer.Header().Set("Content-Type", "application/json")
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writer.WriteHeader(http.StatusOK)
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writer.Write(b)
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}
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func updateArtikelHandler(writer http.ResponseWriter, req *http.Request) {
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body, err := ioutil.ReadAll(req.Body)
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if err != nil {
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writer.WriteHeader(http.StatusBadRequest)
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}
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var art domain.Artikel
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json.Unmarshal(body, &art)
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log.Println("Bezeichnung = ", art.Bezeichnung)
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log.Println("externe Art-Nr = ", art.ArtNrExt)
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log.Info("updating Artikel", art.Bezeichnung)
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res, err := database.UpdateArtikel(art)
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if err != nil {
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writer.WriteHeader(http.StatusInternalServerError)
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}
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b, err := json.Marshal(res)
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if err != nil {
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log.Fatal("Error: ", err)
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}
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location := fmt.Sprintf("%s/%d", req.URL.String(), res.Id)
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writer.Header().Set("Location:", location)
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writer.Header().Set("Content-Type", "application/json")
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writer.WriteHeader(http.StatusOK)
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writer.Write(b)
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}
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func CORS(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Set headers
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w.Header().Set("Access-Control-Allow-Headers:", "*")
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w.Header().Set("Access-Control-Allow-Origin", "*")
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w.Header().Set("Access-Control-Allow-Methods", "*")
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if r.Method == "OPTIONS" {
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w.WriteHeader(http.StatusOK)
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return
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}
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fmt.Println("ok")
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// Next
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next.ServeHTTP(w, r)
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return
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})
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}
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