forked from WEB-IB-SS26/development-ib
75 lines
1.5 KiB
Go
75 lines
1.5 KiB
Go
package main
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import (
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"sync"
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"github.com/google/uuid"
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)
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type UserData struct {
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Username string `json:"username"`
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Nickname string `json:"nickname"`
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Admin bool `json:"admin"`
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}
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var (
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sessions = make(map[string]UserData)
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mu sync.Mutex
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)
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func checkSessionID(r *http.Request) (string, error) {
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cookie, err := r.Cookie("session_id")
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if err != nil {
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return "", errors.New("keine session-ID")
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}
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return cookie.Value, nil
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}
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func signup(w http.ResponseWriter, r *http.Request) {
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var user UserData
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err := json.NewDecoder(r.Body).Decode(&user)
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if err != nil || user.Nickname == "" || user.Username == "" {
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http.Error(w, "Daten konnten nicht verarbeitet werden.", http.StatusBadRequest)
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return
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}
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newID := uuid.New().String()
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newCookie := http.Cookie{
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Name: "session_id",
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Value: newID,
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}
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http.SetCookie(w, &newCookie)
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mu.Lock()
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sessions[newID] = user
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mu.Unlock()
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}
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func whoami(w http.ResponseWriter, r *http.Request) {
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sessionID, err := checkSessionID(r)
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if err != nil {
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fmt.Fprintf(w, "Du bist noch niemand.")
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} else {
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mu.Lock()
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user, ok := sessions[sessionID]
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mu.Unlock()
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if ok {
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fmt.Fprintf(w, "Hallo %s!\n", user.Nickname)
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if user.Admin {
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fmt.Fprintln(w, "Du bist als Admin registriert.")
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} else {
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fmt.Fprintln(w, "Du bist nicht als Admin registriert.")
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}
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}
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}
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}
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func main() {
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http.HandleFunc("/signup", signup)
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http.HandleFunc("/whoami", whoami)
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http.ListenAndServe("localhost:8080", nil)
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} |