How to parse a requests for different structures swift - ios

Question

I have several URLs and, accordingly, there is a data structure for each of them.
URLS:
case "Get Day":
return "time/get_day.php"
case "Get Time":
return "time/get_time.php"
case "Get Current Time":
return "user/get_current_time.php"
STRUCTS:
struct Day: Codable {
var status: Int? = nil
var error_message: String? = nil
var result: [Result]? = nil
}
struct Time: Codable {
let status: Int?
let error_message: String?
let result: [Result]?
struct Result: Codable {
let id: String
let startTime: String
let endTime: String
}
}
struct CurrentTime: Codable {
let status: Int?
let error_message: String?
let current_time: Int?
}
struct Result: Codable {
let id: String
let name_en: String
let name_ru: String
let name_kk: String
}
At the moment I have a parseJson () function. In which I can manually change the type of structure for parsing one by one. But I cannot think of how to do this so that I would not change anything in the code manually.
func parseJson(data: Data) {
let decoder = JSONDecoder()
do {
let parsedData = try decoder.decode(Day.self, from: data)
print(parsedData)
} catch {
print("Error parsing Json:\(error)")
}
}
Please, if you have an example or ideas, share with me.

Answer 1

// Generic function to decode any decodable struct
func parseJson<T: Decodable>(data: Data) -> T? {
let decoder = JSONDecoder()
do {
let parsedData = try decoder.decode(T.self, from: data)
return parsedData
} catch {
return nil
}
}
// Usage
let someDay: Day? = parseJson(data: dayData)
let sometime: Time? = parseJson(data: timeData)