JSONDecoder Not Parsing Data - ios

Question

I am trying to get data from this URL
https://api.opendota.com/api/heroStats
I have made a struct
struct HeroStats : Decodable {
let localized_name: String
let primary_attr: String
let attack_type: String
let legs: Int
let image: String
}
Top of my View Controller
var heros = [HeroStats]()
func downloadJSON(completed: #escaping () -> ()) {
let url = URL(string: "https://api.opendota.com/api/heroStats")
URLSession.shared.dataTask(with: url!) { (data, response, error) in
if error != nil {
print(error.debugDescription)
}
do {
guard let data = data else { return}
self.heros = try JSONDecoder().decode([HeroStats].self, from: data)
DispatchQueue.main.async {
completed()
}
print(self.heros)
} catch {
print("JSON ERROR")
return
}
}.resume()
}
I always return JSON ERROR for some reason, although everything seems to be correct.

Answer 1

Try to read more on Codable/Encodable in Swift
Encoding and Decoding custom types
You may want to improve your code by making Swift names that differs from JSON names
struct HeroStats: Codable {
let name: String
let primaryAttribute: String
let attackType: String // Better to be an enum also
let legs: Int
let image: String?
enum CodingKeys: String, CodingKey {
case name = "localized_name"
case primaryAttribute = "primary_attr"
case attackType = "attack_type"
case legs
case image = "img"
}
}