// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package main

import (
	"flag"
	"fmt"
	"net/http"

	"github.com/golang/glog"
	"github.com/spf13/pflag"
)

var (
	argPort          = pflag.Int("port", 8080, "The port to listen to for incoming HTTP requests")
	argApiserverHost = pflag.String("apiserver-host", "", "The address of the Kubernetes Apiserver "+
		"to connect to in the format of protocol://address:port, e.g., "+
		"http://localhost:8001. If not specified, the assumption is that the binary runs in a"+
		"Kubernetes cluster and local discovery is attempted.")
)

func main() {
	pflag.CommandLine.AddGoFlagSet(flag.CommandLine)

	pflag.Parse()
	glog.Info("Starting HTTP server on port ", *argPort)
	defer glog.Flush()

	apiserverClient, err := CreateApiserverClient(*argApiserverHost, new(ClientFactoryImpl))
	if err != nil {
		glog.Fatal(err)
	}

	serverAPIVersion, err := apiserverClient.ServerAPIVersions()
	if err != nil {
		glog.Fatal(err)
	}

	// Display Apiserver version. This is just for tests.
	println("Server API version: " + serverAPIVersion.GoString())

	// Run a HTTP server that serves static public files from './public' and handles API calls.
	// TODO(bryk): Disable directory listing.
	http.Handle("/", http.FileServer(http.Dir("./public")))
	http.Handle("/api/", createApiHandler())
	glog.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", *argPort), nil))
}