Add code from PR amitshekhariitbhu#15 - Add CORS middleware support

Author: Yuri-SN

api/middleware/cors_middleware.go

@@ -0,0 +1,22 @@
+package middleware
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+func CORSMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Writer.Header().Set("Content-Type", "application/json")
+		c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
+		c.Writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
+		c.Writer.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE, UPDATE")
+		c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
+
+		if c.Request.Method == "OPTIONS" {
+			c.AbortWithStatus(204)
+			return
+		}
+
+		c.Next()
+	}
+}

api/route/route.go

@@ -10,13 +10,17 @@ import (
 )
 
 func Setup(env *bootstrap.Env, timeout time.Duration, db mongo.Database, gin *gin.Engine) {
-	publicRouter := gin.Group("")
+	router := gin.Group("")
+	// Middleware to allow CORS
+	router.Use(middleware.CORSMiddleware())
+
+	publicRouter := router.Group("")
 	// All Public APIs
 	NewSignupRouter(env, timeout, db, publicRouter)
 	NewLoginRouter(env, timeout, db, publicRouter)
 	NewRefreshTokenRouter(env, timeout, db, publicRouter)
 
-	protectedRouter := gin.Group("")
+	protectedRouter := router.Group("")
 	// Middleware to verify AccessToken
 	protectedRouter.Use(middleware.JwtAuthMiddleware(env.AccessTokenSecret))
 	// All Private APIs