start work on http/ws api

websocket.go

@@ -0,0 +1,50 @@
+package showbridge
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/gorilla/websocket"
+)
+
+var upgrader = websocket.Upgrader{
+	CheckOrigin: func(r *http.Request) bool {
+		return true
+	},
+}
+
+func (r *Router) handleWebsocket(w http.ResponseWriter, req *http.Request) {
+	conn, err := upgrader.Upgrade(w, req, nil)
+	if err != nil {
+		r.logger.Error("websocket upgrade error", "error", err)
+		return
+	}
+	defer conn.Close()
+
+	r.wsConnsMu.Lock()
+	r.wsConns = append(r.wsConns, conn)
+	r.wsConnsMu.Unlock()
+	for {
+		_, message, err := conn.ReadMessage()
+		if err != nil {
+			r.logger.Error("websocket read error", "error", err)
+			break
+		}
+
+		event := Event{}
+		err = json.Unmarshal(message, &event)
+		if err != nil {
+			r.logger.Error("websocket message unmarshal error", "error", err)
+			continue
+		}
+		r.handleEvent(event)
+	}
+	r.wsConnsMu.Lock()
+	for i, c := range r.wsConns {
+		if c == conn {
+			r.wsConns = append(r.wsConns[:i], r.wsConns[i+1:]...)
+			break
+		}
+	}
+	r.wsConnsMu.Unlock()
+}