fix: add better handling of exceptions (parsing, arguments, options, ...)

src/cli.cr

@@ -30,13 +30,22 @@ module GX
         Parsers::RootParser.new.build(parser, breadcrumbs, @config)
       end
       pparser.parse(args)
+    rescue e : OptionParser::MissingOption
+      STDERR.puts "ERROR: #{e.message}".colorize(:red)
+      exit(1)
     end
 
     def run
       command = CommandFactory.create_command(@config, @config.mode)
       abort("ERROR: unknown command for mode #{@config.mode}") if command.nil?
 
-      command.try &.execute
+      command.execute
+    rescue e : ArgumentError
+      STDERR.puts "ERROR: #{e.message}".colorize(:red)
+      exit(1)
+    rescue e : Exception
+      STDERR.puts "ERROR: #{e.message}".colorize(:red)
+      exit(1)
     end
   end
 end

src/config.cr

@@ -102,7 +102,12 @@ module GX
       file_data = File.read(config_path)
       file_patched = Crinja.render(file_data, {"env" => ENV.to_h})
 
-      root = Models::RootConfig.from_yaml(file_patched)
+      begin
+        root = Models::RootConfig.from_yaml(file_patched)
+      rescue ex : YAML::ParseException
+        STDERR.puts "Error parsing configuration file: #{ex.message}".colorize(:red)
+        exit(1)
+      end
 
       mount_point_base_safe = root.global.mount_point_base
       raise Models::InvalidMountpointError.new("Invalid global mount point") if mount_point_base_safe.nil?