docs: add comments for all functions

web/global/global.go

@@ -1,3 +1,4 @@
+// Package global provides global variables and interfaces for accessing web and subscription servers.
 package global
 
 import (
@@ -12,27 +13,33 @@ var (
 	subServer SubServer
 )
 
+// WebServer interface defines methods for accessing the web server instance.
 type WebServer interface {
-	GetCron() *cron.Cron
-	GetCtx() context.Context
+	GetCron() *cron.Cron     // Get the cron scheduler
+	GetCtx() context.Context // Get the server context
 }
 
+// SubServer interface defines methods for accessing the subscription server instance.
 type SubServer interface {
-	GetCtx() context.Context
+	GetCtx() context.Context // Get the server context
 }
 
+// SetWebServer sets the global web server instance.
 func SetWebServer(s WebServer) {
 	webServer = s
 }
 
+// GetWebServer returns the global web server instance.
 func GetWebServer() WebServer {
 	return webServer
 }
 
+// SetSubServer sets the global subscription server instance.
 func SetSubServer(s SubServer) {
 	subServer = s
 }
 
+// GetSubServer returns the global subscription server instance.
 func GetSubServer() SubServer {
 	return subServer
 }