fea: update .env.sample file with updated values

config/.env.sample

@@ -1,6 +1,19 @@
+# Here are the environment variables that are used by the application
+# Default values are the ones specified in this file
+
 DB_HOST=localhost
 DB_PORT=5432
 DB_USER=postgres
 DB_PASSWORD=
 DB_NAME=
-SECRET=
+SECRET=
+# DEBUG sets isProduction to false, it enables error messages for 
+# HTTP requests and disables preforking and startup message
+DEBUG=false
+# LOG_LEVEL sets the log level for the application
+# Possible values are: trace, debug, info, warn, error, fatal, panic
+LOG_LEVEL=debug
+# APP_ADDR sets the address and port the application will listen on
+APP_ADDR=:3000
+# STATIC_DIR sets the directory where the static files are located
+STATIC_DIR=static

router/web.go

@@ -9,7 +9,7 @@ import (
 func SetupWebRoutes(app *fiber.App) {
 	// Serve Single Page application on "/"
 	// assume static file at static folder
-	app.Static("/", config.Config("static_dir", "static"), fiber.Static{
+	app.Static("/", config.Config("STATIC_DIR", "static"), fiber.Static{
 		Compress: true,
 		MaxAge:   3600,
 	})
@@ -28,6 +28,6 @@ func SetupWebRoutes(app *fiber.App) {
 	})
 
 	app.Get("/*", func(ctx *fiber.Ctx) error {
-		return ctx.SendFile("./" + config.Config("static_dir", "static") + "/index.html")
+		return ctx.SendFile("./" + config.Config("STATIC_DIR", "static") + "/index.html")
 	})
 }