class Bundler::Settings

def [](name)
  key = key_for(name)
  value = (@local_config[key] || ENV[key] || @global_config[key] || DEFAULT_CONFIG[name])
  case
  when value.nil?
    nil
  when is_bool(name) || value == "false"
    to_bool(value)
  when is_num(name)
    value.to_i
  else
    value
  end
end

def []=(key, value)
  local_config_file || raise(GemfileNotFound, "Could not locate Gemfile")
  set_key(key, value, @local_config, local_config_file)
end

def all
  env_keys = ENV.keys.select {|k| k =~ /BUNDLE_.*/ }
  keys = @global_config.keys | @local_config.keys | env_keys
  keys.map do |key|
    key.sub(/^BUNDLE_/, "").gsub(/__/, ".").downcase
  end
end

def allow_sudo?
  !@local_config.key?(key_for(:path))
end

def app_cache_path
  @app_cache_path ||= begin
    path = self[:cache_path] || "vendor/cache"
    raise InvalidOption, "Cache path must be relative to the bundle path" if path.start_with?("/")
    path
  end
end

def convert_to_backward_compatible_key(key)
  key = "#{key}/" if key =~ /https?:/i && key !~ %r{/\Z}
  key = key.gsub(".", "__") if key.include?(".")
  key
end

def credentials_for(uri)
  self[uri.to_s] || self[uri.host]
end

def delete(key)
  @local_config.delete(key_for(key))
end

def gem_mirrors
  all.inject({}) do |h, k|
    if k =~ /^mirror\./
      uri = normalize_uri($')
      h[uri] = normalize_uri(self[k])
    end
    h
  end
end

def get_array(key)
  self[key] ? self[key].split(":").map(&:to_sym) : []
end

def global_config_file
  file = ENV["BUNDLE_CONFIG"] || File.join(Bundler.rubygems.user_home, ".bundle/config")
  Pathname.new(file)
end

def ignore_config?
  ENV["BUNDLE_IGNORE_CONFIG"]
end

def initialize(root = nil)
  @root          = root
  @local_config  = load_config(local_config_file)
  @global_config = load_config(global_config_file)
end

def is_bool(name)
  BOOL_KEYS.include?(name.to_s) || BOOL_KEYS.include?(parent_setting_for(name.to_s))
end

def is_num(value)
  NUMBER_KEYS.include?(value.to_s)
end

def key_for(key)
  key = normalize_uri(key).to_s if key.is_a?(String) && /https?:/ =~ key
  key = key.to_s.gsub(".", "__").upcase
  "BUNDLE_#{key}"
end

def load_config(config_file)
  valid_file = config_file && config_file.exist? && !config_file.size.zero?
  if !ignore_config? && valid_file
    config_regex = /^(BUNDLE_.+): (['"]?)(.*(?:\n(?!BUNDLE).+)?)\2$/
    raise PermissionError.new(config_file, :read) unless config_file.readable?
    config_pairs = config_file.read.scan(config_regex).map do |m|
      key, _, value = m
      [convert_to_backward_compatible_key(key), value.gsub(/\s+/, " ").tr('"', "'")]
    end
    Hash[config_pairs]
  else
    {}
  end
end

def local_config_file
  Pathname.new(@root).join("config") if @root
end

def local_overrides
  repos = {}
  all.each do |k|
    repos[$'] = self[k] if k =~ /^local\./
  end
  repos
end

def locations(key)
  key = key_for(key)
  locations = {}
  locations[:local]  = @local_config[key] if @local_config.key?(key)
  locations[:env]    = ENV[key] if ENV[key]
  locations[:global] = @global_config[key] if @global_config.key?(key)
  locations[:default] = DEFAULT_CONFIG[key] if DEFAULT_CONFIG.key?(key)
  locations
end

def mirror_for(uri)
  uri = URI(uri.to_s) unless uri.is_a?(URI)
  # Settings keys are all downcased
  normalized_key = normalize_uri(uri.to_s.downcase)
  gem_mirrors[normalized_key] || uri
end

def normalize_uri(uri)
  uri = uri.to_s
  uri = "#{uri}/" unless uri =~ %r{/\Z}
  uri = URI(uri)
  unless uri.absolute?
    raise ArgumentError, "Gem sources must be absolute. You provided '#{uri}'."
  end
  uri
end

def parent_setting_for(name)
  split_specfic_setting_for(name)[0]
end

def path
  key  = key_for(:path)
  path = ENV[key] || @global_config[key]
  return path if path && !@local_config.key?(key)
  if path = self[:path]
    "#{path}/#{Bundler.ruby_scope}"
  else
    Bundler.rubygems.gem_dir
  end
end

def pretty_values_for(exposed_key)
  key = key_for(exposed_key)
  locations = []
  if @local_config.key?(key)
    locations << "Set for your local app (#{local_config_file}): #{@local_config[key].inspect}"
  end
  if value = ENV[key]
    locations << "Set via #{key}: #{value.inspect}"
  end
  if @global_config.key?(key)
    locations << "Set for the current user (#{global_config_file}): #{@global_config[key].inspect}"
  end
  return ["You have not configured a value for `#{exposed_key}`"] if locations.empty?
  locations
end

def set_array(key, array)
  self[key] = (array.empty? ? nil : array.join(":")) if array
end

def set_global(key, value)
  set_key(key, value, @global_config, global_config_file)
end

def set_key(key, value, hash, file)
  key = key_for(key)
  unless hash[key] == value
    hash[key] = value
    hash.delete(key) if value.nil?
    SharedHelpers.filesystem_access(file) do |p|
      FileUtils.mkdir_p(p.dirname)
      require "bundler/psyched_yaml"
      File.open(p, "w") {|f| f.puts YAML.dump(hash) }
    end
  end
  value
end

def specfic_gem_for(name)
  split_specfic_setting_for(name)[1]
end

def split_specfic_setting_for(name)
  name.split(".")
end

def to_bool(value)
  !(value.nil? || value == "" || value =~ /^(false|f|no|n|0)$/i || value == false)
end

def with
  get_array(:with)
end

def with=(array)
  set_array(:with, array)
end

def without
  get_array(:without)
end

def without=(array)
  set_array(:without, array)
end