import Foundation
import UltraMeshCore

struct DaemonConfig: Codable {
    var aliases: [String: MeshAddress] = [:]
    var firewall: Set<FirewallRule> = []
    var lsaSequence: UInt64?

    static func load(from url: URL) -> DaemonConfig {
        guard let data = try? Data(contentsOf: url), let value = try? JSONDecoder().decode(Self.self, from: data) else { return .init() }
        return value
    }

    func save(to url: URL) throws {
        let encoder = JSONEncoder(); encoder.outputFormatting = [.prettyPrinted, .sortedKeys]
        try encoder.encode(self).write(to: url, options: .atomic)
        try FileManager.default.setAttributes([.posixPermissions: 0o600], ofItemAtPath: url.path)
    }
}