Add default config command

lib/gel/command/config.rb

@@ -2,7 +2,12 @@
 
 class Gel::Command::Config < Gel::Command
   def run(command_line)
-    if command_line.size == 1
+    if command_line.empty?
+      Gel::Environment.config.all.each do |key,_|
+        value = Gel::Environment.config[key]
+        puts "#{key}=#{value}"
+      end
+    elsif command_line.size == 1
       puts Gel::Environment.config[command_line.first]
     else
       Gel::Environment.config[command_line.shift] = command_line.join(" ")

lib/gel/config.rb

@@ -2,7 +2,7 @@
 
 class Gel::Config
   def initialize
-    @root = File.expand_path("~/.config/gel")
+    @root = ENV.fetch('GEL_CONFIG') { File.expand_path("~/.config/gel") }
     @path = File.join(@root, "config")
     @config = nil
   end
@@ -11,21 +11,18 @@ def config
     @config ||= read
   end
 
-  def [](group = nil, key)
-    if group.nil?
-      group, key = key.split(".", 2)
-    end
+  def all
+    config
+  end
 
-    (group ? (config[group.to_s] || {}) : config)[key.to_s]
+  def [](group = nil, key)
+    key = "#{group}.#{key}" unless group.nil?
+    config[key.downcase]
   end
 
   def []=(group = nil, key, value)
-    if group.nil?
-      group, key = key.split(".", 2)
-    end
-
-    (group ? (config[group.to_s] ||= {}) : config)[key.to_s] = value.to_s
-
+    key = "#{group}.#{key}" unless group.nil?
+    config[key] = value.to_s
     write(config)
   end
 
@@ -34,20 +31,11 @@ def []=(group = nil, key, value)
   def read
     result = {}
     if File.exist?(@path)
-      context = nil
       File.read(@path).each_line do |line|
         line.chomp!
-        if line =~ /\A(\S[^:]*):\z/
-          context = result[$1] = {}
-        elsif line =~ /\A  ([^:]*): (.*)\z/
-          context[$1] = $2
-        elsif line =~ /\A([^:]*): (.*)\z/
-          result[$1] = $2
-        elsif line =~ /\A\s*(?:#|\z)/
-          # comment / empty
-        else
-          raise Gel::Error::UnexpectedConfigError.new(line: line)
-        end
+        key, value = line.split(':')
+        next unless key
+        result[key.downcase] = value&.strip
       end
     end
     result
@@ -58,19 +46,7 @@ def write(data)
 
     tempfile = File.join(@root, ".config.#{Process.pid}")
     File.open(tempfile, "w", 0644) do |f|
-      data.each do |key, value|
-        next if value.is_a?(Hash)
-        f.puts("#{key}: #{value}")
-      end
-
-      data.each do |key, value|
-        next unless value.is_a?(Hash)
-        f.puts
-        f.puts("#{key}:")
-        value.each do |subkey, subvalue|
-          f.puts("  #{subkey}: #{subvalue}")
-        end
-      end
+      data.each { |key, value| f.puts("#{key}: #{value}") }
     end
 
     File.rename(tempfile, @path)

test/config_test.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class ConfigTest < Minitest::Test
+  def setup
+    @old_gel_config_env = ENV['GEL_CONFIG']
+    ENV['GEL_CONFIG'] = fixture_file('')
+  end
+
+  def teardown
+    ENV['GEL_CONFIG'] = @old_gel_config_env
+  end
+
+  def test_reading_key_from_config_successully
+    klass = Gel::Config.new
+    assert_equal '316429e', klass['packages.example.io']
+  end
+
+  def test_reading_group_key_from_config_successully
+    klass = Gel::Config.new
+    assert_equal '316429e', klass['packages', 'example.io']
+  end
+
+  def test_reading_uppercase_key_from_config_successully
+    klass = Gel::Config.new
+    assert_equal 'true', klass['gem.MIT']
+  end
+
+  def test_reading_all_from_config_successully
+    settings = Gel::Config.new.all
+    assert_equal '316429e', settings['packages.example.io']
+    assert_equal 'true', settings['gem.mit']
+    assert_equal '10', settings['timeout']
+  end
+end

test/fixtures/config

@@ -0,0 +1,3 @@
+packages.example.io: 316429e
+gem.mit: true
+timeout: 10