added web handler for language

1 files changed, 31 insertions, 3 deletions

diff --git a/cmd/dolmetschctld/web.go b/cmd/dolmetschctld/web.go
index ad42429..ade1e82 100644
--- a/cmd/dolmetschctld/web.go
+++ b/cmd/dolmetschctld/web.go
@@ -24,6 +24,7 @@ package main
 
 import (
 	"encoding/json"
+	"log"
 	"net/http"
 	"time"
 )
@@ -57,13 +58,40 @@ func webSendErrorResponse(w http.ResponseWriter, status int, error string) {
 	webSendResponse(w, status, webError{ResponseCode: status, Error: error})
 }
 
+type webLanguage struct {
+	Lang Language `json:"language"`
+}
+
+func webLanguageHandler(sm *StateMachine, w http.ResponseWriter, r *http.Request) {
+	if r.Method != "PUT" {
+		webSendErrorResponse(w, http.StatusMethodNotAllowed, "only PUT method is allowed")
+		return
+	}
+
+	var result webLanguage
+	dec := json.NewDecoder(r.Body)
+	dec.DisallowUnknownFields()
+	if err := dec.Decode(&result); err != nil {
+		webSendErrorResponse(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	log.Printf("web: got request %v", result)
+
+	if err := sm.SetLanguage(result.Lang); err != nil {
+		webSendErrorResponse(w, http.StatusBadRequest, err.Error())
+		return
+	}
+	webSendResponse(w, http.StatusOK, result)
+}
+
 type webState struct {
 	State State    `json:"state"`
 	Ratio float32  `json:"original-to-interpreter-ratio"`
 	Lang  Language `json:"language"`
 }
 
-func webGetStateHandler(sm *StateMachine, w http.ResponseWriter, r *http.Request) {
+func webStateHandler(sm *StateMachine, w http.ResponseWriter, r *http.Request) {
 	if r.Method != "GET" {
 		webSendErrorResponse(w, http.StatusMethodNotAllowed, "only GET method is allowed")
 		return
@@ -81,8 +109,8 @@ func (web *WebInterface) Run() error {
 func NewWebInterface(addr string, sm *StateMachine) (web *WebInterface, err error) {
 	web = &WebInterface{}
 
-	http.Handle("/api/v1/state", webHandler{sm, webGetStateHandler})
-	// TODO: add other handler
+	http.Handle("/api/v1/state", webHandler{sm, webStateHandler})
+	http.Handle("/api/v1/language", webHandler{sm, webLanguageHandler})
 
 	web.server = &http.Server{Addr: addr, ReadTimeout: 2 * time.Hour, WriteTimeout: 2 * time.Hour}
 	return