Category Structure

.swift

struct Category :Decodable {
    
    let categoryName :String
    let detail :[Detail]
    
    struct Detail :Decodable {
        let category :String
        let trailerPrice :String
        let isWatchlist :Bool?
    }
    
    private struct CodingKeys :CodingKey {
        
        var stringValue :String
        var intValue :Int? {
            return nil
        }
        
        init?(stringValue :String) {
            self.stringValue = stringValue
        }
        
        init?(intValue :Int) {
            return nil
        }
        
        static let categoryName = CodingKeys(stringValue: "categoryName")!
        
    }
    
    init(from decoder :Decoder) throws {
        
        let container = try decoder.container(keyedBy: CodingKeys.self)
        self.categoryName = try container.decode(String.self, forKey: .categoryName)
        
        let key = CodingKeys(stringValue: self.categoryName)!
        self.detail = try container.decode([Detail].self, forKey: key)
        
    }
    
}