From 4a4db8d19507f5d3f6f191a2f5c0ee1fa9db1bf1 Mon Sep 17 00:00:00 2001
From: emile <emile@vauge.com>
Date: Mon, 9 Nov 2015 22:33:16 +0100
Subject: [PATCH] added JSON API on /api

---
 app.go | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/app.go b/app.go
index a6ac7b2..29a41e2 100644
--- a/app.go
+++ b/app.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"encoding/json"
 	"fmt"
 	"github.com/gorilla/websocket"
 	"log"
@@ -19,6 +20,7 @@ var upgrader = websocket.Upgrader{
 func main() {
 	http.HandleFunc("/echo", echoHandler)
 	http.HandleFunc("/", whoamI)
+	http.HandleFunc("/api", api)
 	fmt.Println("Starting up on 80")
 	log.Fatal(http.ListenAndServe(":80", nil))
 }
@@ -63,7 +65,6 @@ func whoamI(w http.ResponseWriter, req *http.Request) {
 	hostname, _ := os.Hostname()
 	fmt.Fprintln(w, "Hostname:", hostname)
 	ifaces, _ := net.Interfaces()
-	// handle err
 	for _, i := range ifaces {
 		addrs, _ := i.Addrs()
 		// handle err
@@ -80,3 +81,31 @@ func whoamI(w http.ResponseWriter, req *http.Request) {
 	}
 	req.Write(w)
 }
+
+func api(w http.ResponseWriter, req *http.Request) {
+	hostname, _ := os.Hostname()
+	data := struct {
+		Hostname string   `json:"hostname,omitempty"`
+		IP       []string `json:"ip,omitempty"`
+	}{
+		hostname,
+		[]string{},
+	}
+
+	ifaces, _ := net.Interfaces()
+	for _, i := range ifaces {
+		addrs, _ := i.Addrs()
+		// handle err
+		for _, addr := range addrs {
+			var ip net.IP
+			switch v := addr.(type) {
+			case *net.IPNet:
+				ip = v.IP
+			case *net.IPAddr:
+				ip = v.IP
+			}
+			data.IP = append(data.IP, ip.String())
+		}
+	}
+	json.NewEncoder(w).Encode(data)
+}