Improve linux build script

packaging/build-linux.sh

@@ -1,17 +1,41 @@
 #!/bin/bash
 
-function version_check {
-    echo "Did you update the version number in globals.dart, README, etc?"
-    while true; do
-        read -p "$* [y/n]: " yn
-        case $yn in
-            [Yy]*) echo "Great! Starting build.."; break;;
-            [Nn]*) echo "Update version first."; exit;;
-        esac
-    done
+echo -e "Nyrna build script for Linux \n"
+
+# Generic callable confirm function.
+confirm() {
+    # call with a prompt string or use a default
+    read -r -p "${1:-Are you sure? [y/N]} " response
+    case "$response" in
+        [yY][eE][sS]|[yY]) 
+            true
+            ;;
+        *)
+            false
+            ;;
+    esac
 }
 
-version_check
+
+# Confirm tests were run.
+if confirm "Did you run tests? [y/N]"; then
+    echo
+else
+    echo "Run tests first." && exit
+fi
+
+
+# Confirm version number has been updated.
+if confirm "Did you update version number? [y/N]"; then
+    echo
+else
+    echo "Update version number first." && exit
+fi
+
+
+# Build
+echo -e "Starting build.. \n"
+
 
 cd ..