// socket.wren (Corrected)
foreign class Socket {
  // CORRECTED: Changed 'new_' to 'new' to match the standard convention.
  construct new() {}

  foreign connect(host, port, callback)
  foreign listen(host, port, backlog)
  foreign accept(callback)
  foreign read(bytes)
  foreign close()

  foreign isOpen
  foreign remoteAddress
  foreign remotePort

  // Implemented in Wren
  write(data, callback) {
    write_(data, callback)
  }

  readUntil(delimiter, callback) {
    var buffer = ""
    var readChunk
    readChunk = Fn.new {
      this.read(4096) { |err, data|
        if (err) {
          callback.call(err, null)
          return
        }

        buffer = buffer + data
        var index = buffer.indexOf(delimiter)

        if (index != -1) {
          var result = buffer.substring(0, index + delimiter.count)
          callback.call(null, result)
        } else {
          // Delimiter not found, read more data.
          readChunk.call()
        }
      }
    }
    // Start reading.
    readChunk.call()
  }

  // Private foreign method for writing
  foreign write_(data, callback)
}