Add support for CORS

pkg/api/middleware.go

@@ -76,3 +76,11 @@ func serveResult(result interface{}, err error, c *gin.Context) {
 
 	c.JSON(200, result)
 }
+
+func corsMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Header("Access-Control-Allow-Methods", "GET, POST, OPTIONS")
+		c.Header("Access-Control-Allow-Origin", "*")
+		c.Header("Access-Control-Expose-Headers", "*")
+	}
+}

pkg/api/routes.go

@@ -10,6 +10,10 @@ func SetupMiddlewares(group *gin.RouterGroup) {
 		group.Use(requestInspectMiddleware())
 	}
 
+	if command.Opts.CORS {
+		group.Use(corsMiddleware())
+	}
+
 	group.Use(dbCheckMiddleware())
 }