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user.go
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user.go
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package controller
import (
"crypto/rand"
"encoding/base64"
"encoding/json"
"fmt"
"github.com/Elbroto1993/web-ss19-w-template/app/model"
"net/http"
// "strconv"
"io/ioutil"
"time"
"github.com/gorilla/sessions"
"golang.org/x/crypto/bcrypt"
)
var store *sessions.CookieStore
func init() {
// key must be 16, 24 or 32 bytes long (AES-128, AES-192 or AES-256)
key := make([]byte, 32)
rand.Read(key)
store = sessions.NewCookieStore(key)
}
// AddUser controller
func AddUser(w http.ResponseWriter, r *http.Request) {
user := model.User{}
err := json.NewDecoder(r.Body).Decode(&user)
if err != nil {
fmt.Println(err)
}
user.CreatedAt = time.Now()
err = user.Add()
if err != nil {
json.NewEncoder(w).Encode(err.Error())
} else {
session, _ := store.Get(r, "session")
// Set user as authenticated
session.Values["authenticated"] = true
session.Values["username"] = user.Username
session.Save(r, w)
}
}
// DeleteUser controller
func DeleteUser(w http.ResponseWriter, r *http.Request) {
session, _ := store.Get(r, "session")
username := session.Values["username"].(string)
err := model.DeleteUser(username)
if err != nil {
fmt.Println(err)
}
Index(w, r)
}
// UpdateUser controller
func UpdateUser(w http.ResponseWriter, r *http.Request) {
session, _ := store.Get(r, "session")
username := session.Values["username"].(string)
password := r.FormValue("password")
email := r.FormValue("email")
user, err := model.GetUserByUsername(username)
if err != nil {
fmt.Println(err)
}
user.Password = password
user.Email = email
err = user.Update()
if err != nil {
fmt.Println(err)
}
Profil(w, r)
}
// Login controller
func Login(w http.ResponseWriter, r *http.Request) {
tmpl.ExecuteTemplate(w, "index.tmpl", nil)
}
// AuthenticateUser controller
func AuthenticateUser(w http.ResponseWriter, r *http.Request) {
var err error
var user = model.User{}
errorMsg := "Username and/or password wrong!"
username := r.FormValue("username")
password := r.FormValue("password")
// Authentication
user, err = model.GetUserByUsername(username)
if err == nil {
// decode base64 String to []byte
passwordDB, _ := base64.StdEncoding.DecodeString(user.Password)
err = bcrypt.CompareHashAndPassword(passwordDB, []byte(password))
if err == nil {
session, _ := store.Get(r, "session")
// Set user as authenticated
session.Values["authenticated"] = true
session.Values["username"] = username
session.Save(r, w)
http.Redirect(w, r, "/", http.StatusFound)
} else {
data, err := model.GetIndexData(username)
if err != nil {
fmt.Println(err)
}
data.ErrorMsg = errorMsg
tmpl.ExecuteTemplate(w, "index.tmpl", data)
}
} else {
Index(w, r)
}
}
// Logout controller
func Logout(w http.ResponseWriter, r *http.Request) {
session, _ := store.Get(r, "session")
session.Values["authenticated"] = false
session.Values["username"] = ""
session.Save(r, w)
Index(w, r)
}
// Auth is an authentication handler
func Auth(h http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
session, _ := store.Get(r, "session")
// Check if user is authenticated
if auth, ok := session.Values["authenticated"].(bool); !ok || !auth {
http.Redirect(w, r, "/", http.StatusFound)
} else {
h(w, r)
}
}
}
// UpdateImage Controller
func UpdateImage(w http.ResponseWriter, r *http.Request) {
session, _ := store.Get(r, "session")
username := session.Values["username"].(string)
user, _ := model.GetUserByUsername(username)
r.ParseMultipartForm(10 << 20)
file, _, err := r.FormFile("myFile")
if err != nil {
fmt.Println(err)
return
}
defer file.Close()
filebyte, _ := ioutil.ReadAll(file)
encodedString := base64.StdEncoding.EncodeToString(filebyte)
user.Image = encodedString
user.UpdateImage()
Profil(w, r)
}