// Copyright 2017 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 writing, software distributed
// under the License is distributed on a "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 (
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
)

func main() {
	http.HandleFunc("/body", bodyHandler)
	http.HandleFunc("/param", paramHandler)
	log.Fatal(http.ListenAndServe(":8080", nil))
}

func bodyHandler(w http.ResponseWriter, r *http.Request) {
	b, err := ioutil.ReadAll(r.Body)
	if err != nil {
		fmt.Fprintf(w, "could not read body: %v", err)
		return
	}
	name := string(b)
	if name == "" {
		name = "friend"
	}
	fmt.Fprintf(w, "Hello, %s!", name)
}

func paramHandler(w http.ResponseWriter, r *http.Request) {
	name := r.FormValue("name")
	if name == "" {
		name = "friend"
	}
	fmt.Fprintf(w, "Hello, %s!", name)
}
