import Foundation
import HevSocks5Tunnel

/// Bridges NE utun fd ↔ local SOCKS (macOS sysproxy replacement).
enum HevBridge {
    static func writeConfig(socksHost: String = "127.0.0.1", socksPort: Int = 1080, to url: URL) throws {
        let yaml = """
        tunnel:
          mtu: 1400
        socks5:
          address: \(socksHost)
          port: \(socksPort)
          udp: 'udp'
        misc:
          task-stack-size: 24576
          connect-timeout: 5000
          read-write-timeout: 60000
          log-level: warn
        """
        try yaml.write(to: url, atomically: true, encoding: .utf8)
    }

    /// Blocks until quit — call on a background thread.
    @discardableResult
    static func runBlocking(configPath: String, tunFd: Int32) -> Int32 {
        hev_socks5_tunnel_main(configPath, tunFd)
    }

    static func quit() {
        hev_socks5_tunnel_quit()
    }
}