import Foundation

public enum CommonApiClient {

    public static func postJSON(urlString: String, body: [String: Any]) async throws -> [String: Any] {
        guard let url = URL(string: urlString) else {
            throw URLError(.badURL)
        }

        var request = URLRequest(url: url)
        request.httpMethod = "POST"
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
        request.setValue("application/json", forHTTPHeaderField: "Accept")
        request.httpBody = try JSONSerialization.data(withJSONObject: body)

        let (data, response) = try await URLSession.shared.data(for: request)
        guard let http = response as? HTTPURLResponse else {
            throw URLError(.badServerResponse)
        }

        let json = try JSONSerialization.jsonObject(with: data) as? [String: Any] ?? [:]
        guard (200..<300).contains(http.statusCode) else {
            throw NSError(
                domain: "CommonApiClient",
                code: http.statusCode,
                userInfo: [NSLocalizedDescriptionKey: json["message"] as? String ?? "HTTP \(http.statusCode)"]
            )
        }

        return json
    }
}