list: listen loeschen

1 files changed, 49 insertions, 0 deletions

diff --git a/modules/lists/lists.go b/modules/lists/lists.go
index 9e78ac7..6129502 100644
--- a/modules/lists/lists.go
+++ b/modules/lists/lists.go
@@ -79,6 +79,7 @@ func (m *Module) Init(g *grilist.Grilist) {
         m.g.Router.POST("/list/:id/settings", m.updateListSettings)
         m.g.Router.GET("/new/list", m.displayCreateList)
         m.g.Router.POST("/new/list", m.createList)
+        m.g.Router.GET("/list/:id/delete", m.deleteList)
 
         m.g.Router.GET("/api/lists/user", m.APIgetUserLists)
 
@@ -287,6 +288,54 @@ func (m *Module) viewList(w http.ResponseWriter, r *http.Request, p httprouter.P
         m.g.Renderer.RenderPage("list", w, data)
 }
 
+func (m *Module) deleteList(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
+        user, err := m.g.Charakterin.GetUserFromRequest(r)
+        if err != nil {
+                log.Println("invalid deleteList user")
+                http.Redirect(w, r, fmt.Sprintf("/list/%s", p.ByName("id")), 403)
+                return
+        }
+
+        id, err := strconv.Atoi(p.ByName("id"))
+        if err != nil {
+                log.Println("invalid deleteList ID")
+                http.Redirect(w, r, "/", 400)
+                return
+        }
+
+        list, err := m.FromID(id, false)
+        if err != nil {
+                log.Println("invalid deleteList ID (could not get list)")
+                http.Redirect(w, r, fmt.Sprintf("/list/%d", id), 500)
+                return
+        }
+
+        // checken, ob der user auch list owner ist
+        if user.ID != list.Owner.ID {
+                log.Println("invalid deleteList request: user not list owner")
+                http.Redirect(w, r, fmt.Sprintf("/list/%d", id), 403)
+                return
+        }
+
+        // aus der Datenbank loeschen
+        _, err = m.g.DB.Query(`DELETE FROM grilist.lists WHERE id = $1`, id)
+        if err != nil {
+                log.Println("could not delete list:", err)
+                data := m.g.Renderer.DefaultData()
+                data["user"] = user
+                data["list"] = list
+                data["error"] = "Liste konnte nicht geloescht werden."
+
+                m.g.Renderer.RenderPage("list_settings", w, data)
+                return
+        }
+        // aus dem Cache loeschen
+        m.c.Remove(list.ID)
+
+        log.Printf("list %d has been deleted by the owner %d(%s)", list.ID, list.Owner.ID, list.Owner.GetName())
+        http.Redirect(w, r, "/", 302)
+}
+
 func (m *Module) viewListSettings(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
         user, err := m.g.Charakterin.GetUserFromRequest(r)
         if err != nil {