package main

import (
	"fmt"
	"strconv"

	"github.com/weaveworks/weave/common"
	weavenet "github.com/weaveworks/weave/net"
)

func detectBridgeType(args []string) error {
	if len(args) != 2 {
		cmdUsage("detect-bridge-type", "<weave-bridge-name> <datapath-name>")
	}
	bridgeType, err := weavenet.ExistingBridgeType(args[0], args[1])
	if err != nil {
		return err
	} else if bridgeType == nil {
		fmt.Println("none")
	} else {
		fmt.Println(bridgeType.String())
	}
	return nil
}

func createBridge(args []string) error {
	if len(args) != 10 {
		cmdUsage("create-bridge", "<docker-bridge-name> <weave-bridge-name> <datapath-name> <mtu> <port> <mac> <no-fastdp> <no-bridged-fastdp> <proc-path> <expect-npc>")
	}

	mtu, err := strconv.Atoi(args[3])
	if err != nil && args[3] != "" {
		return err
	}
	port, err := strconv.Atoi(args[4])
	if err != nil {
		return err
	}
	config := weavenet.BridgeConfig{
		DockerBridgeName: args[0],
		WeaveBridgeName:  args[1],
		DatapathName:     args[2],
		MTU:              mtu,
		Port:             port,
		Mac:              args[5],
		NoFastdp:         args[6] != "",
		NoBridgedFastdp:  args[7] != "",
		NPC:              args[9] == "--expect-npc",
	}
	procPath := args[8]
	bridgeType, err := weavenet.EnsureBridge(procPath, &config, common.Log)
	if err != nil {
		return err
	}
	fmt.Println(bridgeType.String())
	return nil
}