avoid overwriting credentials (#8)

* generated credentials

* rename file

* add methods to handle action inputs

* fix: avoid overwriting user credentials

* fix: set correct action

README.md

@@ -7,7 +7,7 @@ Action that builds a gem based on a gemspec and publishes to GitHub packages or
 ```yml
 ---
 - name: Publish gem to rubygems or gh packages
-  uses: juliocabrera/publish-ruby-gem-action@v1
+  uses: juliocabrera820/publish-ruby-gem-action@v1
   with:
     github_token: ${{secrets.GITHUB_TOKEN}} # optional
     rubygems_api_key: ${{secrets.RUBYGEMS_API_KEY}} # optional

credentials.rb

@@ -6,32 +6,36 @@
 
 # Module to handle credentials
 module Credentials
-  def self.generate_gh_credentials
-    credentials = <<~CREDENTIALS
-      ---
-      :github: Bearer #{Inputs::GITHUB_TOKEN}
-    CREDENTIALS
+  def self.add_gh_credentials
+    credentials = ":github: Bearer #{Inputs.github_token}"
     write_credentials(credentials)
   end
 
-  def self.generate_rubygems_credentials
-    credentials = <<~CREDENTIALS
-      ---
-      :rubygems_api_key: #{Inputs::RUBYGEMS_API_KEY}
-    CREDENTIALS
+  def self.add_rubygems_credentials
+    credentials = ":rubygems_api_key: #{Inputs.rubygems_api_key}"
     write_credentials(credentials)
   end
 
-  def self.write_credentials(credentials)
-    credentials_dir_path = "#{Dir.home}/.gem"
-    FileUtils.mkdir_p(credentials_dir_path)
-    credentials_file_path = "#{credentials_dir_path}/credentials"
+  def self.generate_credentials_file
+    FileUtils.mkdir_p(gems_path)
+    credentials = '---'
     File.open(credentials_file_path, 'w') { |f| f.write(credentials) }
+  end
+
+  def self.write_credentials(credentials)
+    File.open(credentials_file_path, 'a') { |f| f.write(credentials) }
     FileUtils.chmod(0o600, credentials_file_path)
   end
 
+  def self.gems_path
+    @gems_path ||= "#{Dir.home}/.gem"
+  end
+
+  def self.credentials_file_path
+    @credentials_file_path ||= "#{gems_path}/credentials"
+  end
+
   def self.delete_credentials_file_path
-    credentials_file_path = "#{Dir.home}/.gem/credentials"
     FileUtils.rm(credentials_file_path) if File.exist?(credentials_file_path)
   end
 end

inputs.rb

@@ -5,4 +5,24 @@ module Inputs
   RUBYGEMS_API_KEY = ENV['RUBYGEMS_API_KEY']
   GITHUB_TOKEN = ENV['GITHUB_TOKEN']
   GITHUB_USERNAME = ENV['GITHUB_USERNAME']
+
+  def self.github_token?
+    !GITHUB_TOKEN.nil?
+  end
+
+  def self.rubygems_api_key?
+    !RUBYGEMS_API_KEY.nil?
+  end
+
+  def self.github_token
+    GITHUB_TOKEN
+  end
+
+  def self.rubygems_api_key
+    RUBYGEMS_API_KEY
+  end
+
+  def self.github_username
+    GITHUB_USERNAME
+  end
 end

main.rb

@@ -1,13 +1,15 @@
 # frozen_string_literal: true
 
+require_relative 'credentials'
 require_relative 'gem_builder'
+require_relative 'inputs'
 require_relative 'publish'
-require_relative 'credentials'
 
 begin
   GemBuilder.build
-  Publish.to_rubygems unless Inputs::RUBYGEMS_API_KEY.nil?
-  Publish.to_github_packages unless Inputs::GITHUB_TOKEN.nil?
+  Credentials.generate_credentials_file
+  Publish.to_rubygems if Inputs.rubygems_api_key?
+  Publish.to_github_packages if Inputs.github_token?
 ensure
   Credentials.delete_credentials_file_path
 end

publish.rb

@@ -4,12 +4,12 @@
 require_relative 'inputs'
 require_relative 'credentials'
 
-# Module for publishing gems to Rubygems and GitHub Packages
+# Module for publishing gems to Rubygems or GitHub Packages
 module Publish
   GEM_EXTENSION = '*.gem'
 
   def self.to_rubygems
-    Credentials.generate_gh_credentials
+    Credentials.add_gh_credentials
     gems = check_gem_files
 
     gems.each do |gem_file|
@@ -18,7 +18,7 @@ def self.to_rubygems
   end
 
   def self.to_github_packages
-    Credentials.generate_rubygems_credentials
+    Credentials.add_rubygems_credentials
     gems = check_gem_files
 
     gems.each do |gem_file|
@@ -34,6 +34,6 @@ def self.check_gem_files
   end
 
   def self.github_url
-    "https://rubygems.pkg.github.com/#{Inputs::GITHUB_USERNAME}"
+    "https://rubygems.pkg.github.com/#{Inputs.github_username}"
   end
 end