Wordpress Dokan Multivendor Postcode search and Side bar Filter

Hello please take a look at [login to view URL] Enter this postcode NR5 8NX to www.deliveroo.co.uk. When you enter your postcode such as NR5 8NX to [login to view URL], we will display range of stores around you under the different categories. You will have estimated distance of those stores from you. You can change the subcategory. You can choose based on rank, distance, cheapest, etc When a customer enters the post code, the site will automatically detect the location name in side bar and show the store list with distance from the customer location(e.g 3km away). Then also see the filter at side bar when it takes you to next page. It is showing list of stores and distance to the post code you entered. In SHORT, I need my WORDPRESS multivendor site I am currently designing (based only in UK) to have the Ability for customer to search with Post code(which when entered the system will detect location of customer), then show vendor list and customer can filter store based on distance of post code location to the store, can filter by Top rated, filter by hygiene, etc