Init: setup uptrace and swagger

middlewares/cors.go

@@ -0,0 +1,30 @@
+package middlewares
+
+import (
+	"net/http"
+
+	"github.com/spf13/viper"
+	"github.com/uptrace/bunrouter"
+)
+
+func CORSHandler(next bunrouter.HandlerFunc) bunrouter.HandlerFunc {
+	return func(w http.ResponseWriter, req bunrouter.Request) error {
+		origin := viper.GetString("cors-origin")
+		if origin == "" {
+			return next(w, req)
+		}
+
+		w.Header().Set("Access-Control-Allow-Origin", origin)
+		w.Header().Set("Access-Control-Allow-Credentials", "true")
+
+		if req.Method == http.MethodOptions {
+			w.Header().Set("Access-Control-Allow-Methods",
+				"GET,PUT,POST,DELETE,OPTIONS")
+			w.Header().Set("Access-Control-Allow-Headers",
+				"authorization,content-type,content-length")
+			return nil
+		}
+
+		return next(w, req)
+	}
+}