import Foundation

struct ServerConfig: Codable, Sendable {
    var host: String
    var port: Int?
    var path: String
    var token: String
    var useHttps: Bool

    var baseUrl: String {
        var url = useHttps ? "https://" : "http://"
        url += host
        if let port { url += ":\(port)" }
        if !path.isEmpty { url += path }
        return url
    }
}

extension ServerConfig {
    private static let key = "serverConfig"
    private static let appGroupId = "group.com.magicive.marks"

    static func load() -> ServerConfig? {
        guard let data = UserDefaults.standard.data(forKey: key) else { return nil }
        return try? JSONDecoder().decode(ServerConfig.self, from: data)
    }

    /// Loads config from the shared app group — used by extensions, which have no
    /// access to the main app's `UserDefaults.standard`.
    static func loadShared() -> ServerConfig? {
        guard let data = UserDefaults(suiteName: appGroupId)?.data(forKey: key) else { return nil }
        return try? JSONDecoder().decode(ServerConfig.self, from: data)
    }

    func save() {
        guard let data = try? JSONEncoder().encode(self) else { return }
        UserDefaults.standard.set(data, forKey: ServerConfig.key)
        UserDefaults(suiteName: ServerConfig.appGroupId)?.set(data, forKey: ServerConfig.key)
    }

    func delete() {
        UserDefaults.standard.removeObject(forKey: ServerConfig.key)
        UserDefaults(suiteName: ServerConfig.appGroupId)?.removeObject(forKey: ServerConfig.key)
    }
}