From cd1bdda5f963236dac849eb9257812f81c8af8ba Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Tue, 18 Feb 2025 13:27:37 +0200
Subject: test for dup resource

---
 lib/dsl.rb                 |  5 ++++-
 lib/dslkeywords/package.rb | 13 +++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/dsl.rb b/lib/dsl.rb
index b9062e5..353bb15 100644
--- a/lib/dsl.rb
+++ b/lib/dsl.rb
@@ -23,6 +23,8 @@ module RCM
     include Options
     include Log
 
+    class DuplicateResource < StandardError; end
+
     def initialize(reset)
       DSL.reset! if reset
       @id = "dsl(#{@@rcm_counter += 1})"
@@ -35,7 +37,8 @@ module RCM
     def evaluate! = @scheduled.each(&:evaluate!)
 
     def <<(obj)
-      fatal_exit "Object #{obj.id} already declared!" if @@objs.key?(obj.id)
+      raise DuplicateResource, "#{obj.id} already declared!" if @@objs.key?(obj.id)
+
       @scheduled << @@objs[obj.id] = obj
     end
   end
diff --git a/lib/dslkeywords/package.rb b/lib/dslkeywords/package.rb
index b28ed50..86903cf 100644
--- a/lib/dslkeywords/package.rb
+++ b/lib/dslkeywords/package.rb
@@ -4,12 +4,25 @@ require 'fileutils'
 require_relative 'resource'
 
 module RCM
+  class DNFPackageManager
+    def installed?(pkg) = false
+    def install(pkg) = `dnf install -y "#{pkg}"` unless installed?(pkg)
+    def update(pkg) = `dnf update -y "#{pkg}"`
+    def remove(pkg) = `dnf remove -y "#{pkg}"` if installed?(pkg)
+  end
+
   # Managing packages
   class Package < Resource
     attr_reader :path
 
+    class UnsupportedOS < StandardError; end
+
     def initialize(name)
       super(name)
+      raise UnsupportedOS, 'OS is not supported' unless File.file?('/etc/fedora-release')
+
+      @manager = DNFPackageManager.new
+
       @name = name
     end
 
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