add option in UI to delete past sessions

index.tmpl

@@ -88,6 +88,7 @@
                     <th style="width: 50%">Description</th>
                     <th style="width: 20%">Created at</th>
                     <th style="width: 20%">Ended at</th>
+                    <th style="width: 20%">Actions</th>
                 </tr>
             </thead>
 
@@ -98,6 +99,12 @@
                         <td>{{ $session.Description }}</td>
                         <td>{{ $session.CreatedAt.Format "02.01.2006 15:04:05" }}</td>
                         <td>{{ $session.EndedAt.Format "02.01.2006 15:04:05" }}</td>
+                        <td>
+                            <form method="post" action="/delete_session" enctype="multipart/form-data">
+                                <input type="hidden" name="session_id" value="{{ $session.Id }}">
+                                <input type="submit" value="Delete" class="secondary">
+                            </form>
+                        </td>
                     </tr>
                 {{ end }}
             </tbody>

main.go

@@ -48,6 +48,7 @@ func Run() error {
 	mux.Handle("GET /", routes.GetIndex(device, storage, tmpl))
 	mux.Handle("POST /start_session", routes.StartSession(logger, storage))
 	mux.Handle("POST /end_session", routes.EndSession(logger, storage))
+	mux.Handle("POST /delete_session", routes.DeleteSession(logger, storage))
 
 	mux.Handle("POST /api/session", routes.APIStartSession(logger, storage))
 	mux.Handle("DELETE /api/session/{session_id}", routes.APIEndSession(logger, storage))

routes/index.go

@@ -83,3 +83,27 @@ func EndSession(logger *log.Logger, storage sessions.Storage) http.HandlerFunc {
 		logger.Printf("Ended session for %s via webpanel (id = %s)", req.RemoteAddr, sessionId)
 	}
 }
+
+func DeleteSession(logger *log.Logger, storage sessions.Storage) http.HandlerFunc {
+	return func(res http.ResponseWriter, req *http.Request) {
+		err := req.ParseMultipartForm(10 * 1024)
+		if err != nil {
+			http.Error(res, "", http.StatusBadRequest)
+			return
+		}
+
+		sessionId := req.FormValue("session_id")
+		err = storage.DeleteSession(sessionId)
+		switch {
+		case err == sessions.ErrUnknownSession:
+			http.Error(res, "", http.StatusNotFound)
+			return
+		case err != nil:
+			http.Error(res, "", http.StatusInternalServerError)
+			return
+		}
+
+		http.Redirect(res, req, "/", http.StatusFound)
+		logger.Printf("Deleted session for %s via webpanel (id = %s)", req.RemoteAddr, sessionId)
+	}
+}