python:
#the path of the trailer folder

VIDEOS = {'Horror': [{'name': 'Jigsaw',

                       'thumb': 'C:/Users/renaud-consulting/AppData/Roaming/Kodi/userdata/playlists/video/Horror/icon.jpg',

                       'video': 'C:/Users/renaud-consulting/AppData/Roaming/Kodi/userdata/playlists/video/Horror/jigsaw.mp4',

                       'genre': 'Horror'},



def router(paramstring):

    """

    Router function that calls other functions

    depending on the provided paramstring

    :param paramstring: URL encoded plugin paramstring

    :type paramstring: str

    """

    # Parse a URL-encoded paramstring to the dictionary of

    # {<parameter>: <value>} elements

    params = dict(parse_qsl(paramstring))

    # Check the parameters passed to the plugin

    if params:

        if params['action'] == 'listing':

            # Display the list of videos in a provided category.

            list_videos(params['category'])

        elif params['action'] == 'play':

            yesnowindow = xbmcgui.Dialog().yesno('kodi',line,yeslabel='Film',nolabel='Trailer')

            if yesnowindow:

                #Missing code to play the the full movie from his folder               

            else:

                play_video(params['video']) #Playing the trailer clicked