Feature style based on time

[johnnyblasta]

Is your feature request related to a problem? Please describe. When the data contains a datetime component it would be nice to be able change the style based on the datetime and specifically on the difference from now. A use case can be that there is data when a ski track is last preperaed and the style should have different colors f.e. if it was preperaed in the last 3 hours in green and last 24 hours in yellow.

Describe the solution you'd like I would like to setup a filter that takes a attribute and compares to how many seconds from now has past since the value specified.

[
  {
    "fill": {
      "color": "rgba(170, 255, 0,1)"
    },
    "stroke": {
      "color": "rgba(170, 255, 0,1)",
      "width": 2
     },
     "filter": "[dateLastPreparation] DATETIMEDIFFNOW 10800",
     "label": "Prep senaste 3 timmar",
     "zIndex": 90
  }
]

Describe alternatives you've considered More options to filter on datetime could be that you want to specify a specific date, month or year, but don't have any use case for that for now so leave it for future development.