From 031ed467802392b4a43f6c88ef66e15592016b9c Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Sat, 24 Sep 2016 19:30:20 +0200
Subject: implemented state web api endpoint


diff --git a/src/rhctl/web.go b/src/rhctl/web.go
index b3b35d7..3c29c56 100644
--- a/src/rhctl/web.go
+++ b/src/rhctl/web.go
@@ -23,6 +23,7 @@ package main
 
 import (
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"time"
 )
@@ -47,8 +48,32 @@ func webSendResponse(w http.ResponseWriter, status int, respdata interface{}) {
 	encoder.Encode(respdata)
 }
 
-func webPingHandler(ctrl *SwitchControl, w http.ResponseWriter, r *http.Request) {
-	webSendResponse(w, http.StatusOK, "pong")
+type webError struct {
+	ResponseCode int    `json:"RESPONSE_CODE"`
+	ErrorString  string `json:"ERROR_STRING"`
+}
+
+func webSendErrorResponse(w http.ResponseWriter, status int, error string) {
+	webSendResponse(w, http.StatusOK, webError{ResponseCode: status, ErrorString: error})
+}
+
+func webGetStateHandler(ctrl *SwitchControl, w http.ResponseWriter, r *http.Request) {
+	if r.Method != "GET" {
+		webSendErrorResponse(w, http.StatusMethodNotAllowed, "only GET method is allowed")
+		return
+	}
+
+	resp := make(chan interface{})
+	ctrl.Commands <- &Command{Type: CmdState, Response: resp}
+	result := <-resp
+	switch result.(type) {
+	case State:
+		webSendResponse(w, http.StatusOK, result.(State))
+	case error:
+		webSendErrorResponse(w, http.StatusInternalServerError, result.(error).Error())
+	default:
+		webSendErrorResponse(w, http.StatusInternalServerError, fmt.Sprintf("invalid response of type %T: %+v", result, result))
+	}
 }
 
 func (web *WebInterface) Run() {
@@ -65,7 +90,7 @@ func WebInit(conf *Config, ctrl *SwitchControl) (web *WebInterface) {
 		rhdl.Printf("Web: will serving static files from '%s'", conf.Clients.Web.StaticDir)
 		http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir(conf.Clients.Web.StaticDir))))
 	}
-	http.Handle("/ping", webHandler{ctrl, webPingHandler})
+	http.Handle("/api/state", webHandler{ctrl, webGetStateHandler})
 	// TODO: add other handler
 
 	web.server = &http.Server{Addr: conf.Clients.Web.Address, ReadTimeout: 2 * time.Hour, WriteTimeout: 2 * time.Hour}
-- 
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