import Foundation

enum Analytics {
    static func track(_ event: String, _ properties: [String: Any] = [:]) {
        // Serialize before crossing the task boundary — Data is Sendable, [String: Any] is not
        var body: [String: Any] = ["event": event]
        if !properties.isEmpty { body["properties"] = properties }
        guard let payload = try? JSONSerialization.data(withJSONObject: body) else { return }
        Task.detached {
            do {
                let token = try await MarksAuth.validToken()
                guard let url = URL(string: MarksAuth.baseURL + "/v1/marks/events") else { return }
                var request = URLRequest(url: url)
                request.httpMethod = "POST"
                request.setValue("Bearer \(token)", forHTTPHeaderField: "Authorization")
                request.setValue("application/json", forHTTPHeaderField: "Content-Type")
                request.httpBody = payload
                let (_, response) = try await URLSession.shared.data(for: request)
                let status = (response as? HTTPURLResponse)?.statusCode ?? 0
                if status < 200 || status > 299 {
                    print("[Analytics] \(event) → HTTP \(status)")
                }
            } catch {
                print("[Analytics] \(event) failed: \(error.localizedDescription)")
            }
        }
    }
}