Function handleDeleteEmailSubscription

email.go:218–289

(app *App, w http.ResponseWriter, r *http.Request)

}

func handleDeleteEmailSubscription(app *App, w http.ResponseWriter, r *http.Request) error {
	alias := collectionAliasFromReq(r)

	vars := mux.Vars(r)
	subID := vars["subscriber"]
	email := r.FormValue("email")
	token := r.FormValue("t")
	slug := r.FormValue("slug")
	isWeb := r.Method == "GET"

	// Display collection if this is a collection
	var c *Collection
	var err error
	if app.cfg.App.SingleUser {
		c, err = app.db.GetCollectionByID(1)
	} else {
		c, err = app.db.GetCollection(alias)
	}
	if err != nil {
		log.Error("Get collection: %s", err)
		return err
	}

	from := c.CanonicalURL()

	if subID != "" {
		// User unsubscribing via email, so assume action is taken by either current
		// user or not current user, and only use the request's information to
		// satisfy this unsubscribe, i.e. subscriberID and token.
		err = app.db.DeleteEmailSubscriber(subID, token)
	} else {
		// User unsubscribing through the web app, so assume action is taken by
		// currently-auth'd user.
		var userID int64
		u := getUserSession(app, r)
		if u != nil {
			// User is logged in
			userID = u.ID
			if userID == c.OwnerID {
				from = "/" + c.Alias + "/"
			}
		}
		if email == "" && userID <= 0 {
			// Get email address from saved cookie
			session, err := app.sessionStore.Get(r, userEmailCookieName)
			if err != nil {
				log.Error("Unable to get email cookie: %s", err)
			} else {
				email = session.Values[userEmailCookieVal].(string)
			}
		}

		if email == "" && userID <= 0 {
			err = fmt.Errorf("No subscriber given.")
			log.Error("Not deleting subscription: %s", err)
			return err
		}