Add open_link script to allow us open a link in all platforms from Ma…

…kefile or any script

Makefile

@@ -32,4 +32,4 @@ codeGen:
 showTestCoverage:
 	@flutter test --coverage
 	@genhtml coverage/lcov.info -o coverage/html
-	@google-chrome coverage/html/index.html
+	$(shell . ./scripts/makefile_scripts.sh; open_link "coverage/html/index.html")

scripts/makefile_scripts.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# Opens a link with the default browser of OS (It works cross-platform)
+#
+## You can call it like `open_link balad.ir` to open balad website on your default browser
+open_link () {
+  case "$(uname -s)" in
+    Darwin)
+      # macOS
+      open "$1"
+      ;;
+
+    Linux)
+      # Linux:
+      xdg-open "$1"
+      ;;
+
+    CYGWIN*|MINGW32*|MSYS*|MINGW*)
+      # Windows
+      start "$1"
+      ;;
+
+     *)
+       echo 'Not supported OS'
+       ;;
+  esac
+}