Just the Shop Object Structure

Shop.swift

struct Shop: Codable {
    
    struct MapMarker: Codable {
        var id: Int
        var description: String
        var imagePath: String
        var created_at: String?
        var updated_at: String?
    }
    
    struct Tag: Codable {
        var id: Int
        var title: String
        var bgColor: String
        var textColor: String
    }
    
    struct TelNumber: Codable {
        var id: Int
        var telNumber: String
        var type: String?
    }
    
    struct Link: Codable {
        var id: Int
        var link: String
    }
    
    var id: Int
    var nameEn: String?
    var nameTw: String?
    var nameZhsc: String?
    var addrEn: String?
    var addrTw: String?
    var addrZhsc: String?
    var lat: Double
    var lon: Double
    var remarkEn: String?
    var remarkTw: String?
    var remarkZhsc: String?
    var shopPhotoPath: String?
    var shopPhotoLargePath: String?
    var created_at: String?
    var updated_at: String?
    var openingTime: String?
    var mapMarker: MapMarker
    var tags: [Tag]
    var telNumbers: [TelNumber]
    var links: [Link]
    
    var shopLocation: CLLocation {
        return CLLocation(latitude: self.lat, longitude: self.lon)
    }
    
    var tagsCSV: String {
        return self.tags.map({ $0.title }).joined(separator: ",")
    }
    
    func calculateDistanceInMeters(from location: CLLocation?) -> Double {
        guard let location = location else { return 0 }
        let distanceInMeters = location.distance(from: self.shopLocation)
        let displayDistanceInMeters = (distanceInMeters/1000.0).roundToDecimal(1)
        return displayDistanceInMeters
    }
    
    
}