Nuxt routing double optional params

I have nuxt app. I want to create path like this:

path: '/dworzec-pkp/:slug/:category?/:date?',

So there would be two optional params. Example urls would be:

• localhost:5555/dworzec-pkp/nowa-iwiczna <-- w/o optional params
• localhost:5555/dworzec-pkp/nowa-iwiczna/12-10-2020 <-- optional param: date
• localhost:5555/dworzec-pkp/nowa-iwiczna/departures <-- optional param: category
• localhost:5555/dworzec-pkp/nowa-iwiczna/departures/12-10-2020 <-- optional params: date & category

How do I know if url contain category or date? Should I create just directories dworzec-pkp/_slug and within it _.vue file, and then programmatically decide whether it is date or category? Or maybe there's some better solution for that?

Currently I tried like this:

and my issue is that when i enter this localhost:5555/dworzec-pkp/nowa-iwiczna/12-10-2020 then it is treated as :category?. Also I would need to basically almost copy-paste entire _date.vue and index.vue there as this pages are almost same.