creating raw images for QEMU

lib/virtual-machine.rb

@@ -1,4 +1,5 @@
 require 'downloader'
+require 'system'
 require_relative 'data/resources/iso-images'
 
 module VirtualMachine 
@@ -7,10 +8,44 @@ module VirtualMachine
     end
 
     def self.setup(options)
+        if options[:name] == nil 
+            options[:name] = options[:distro]
+        end
+        
+        if options[:arch] == nil 
+            options[:arch] = System::ARCH
+        else 
+            options[:arch] = System.arch_to_symbol(options[:arch])
+        end
+
+        puts options
+
         distro = options[:distro]
-        arch = :arm64
         type = :install
+        arch = options[:arch]
         url = distro(name, arch, type)
-        Downloader.get(url)
+        
+        Downloader.get(url) do |path|
+            disk_img_path = File.join(User.cache_path, "vm", distro.to_s, arch.to_s, options[:name], "root.img")
+            create_disk_image(disk_img_path, 500)
+            
+            puts path
+            puts disk_img_path
+        end
+    end
+
+    # size in MB
+    def self.create_disk_image(path, size)
+        size_in_bytes = 1024 * 1024 * size
+
+        # Ensure the directory exists
+        dir = File.dirname(path)
+        FileUtils.mkdir_p(dir) unless Dir.exist?(dir)
+
+        File.open(path, "wb") do |f|
+            f.truncate(size_in_bytes)
+            # f.seek(size_in_bytes - 1)
+            # f.write("\0")
+        end
     end
 end