class Berkshelf::Config

def coerce_ssl
  ssl = @instance[:ssl]
  ssl[:ca_cert] = OpenSSL::X509::Certificate.new(File.read(ssl[:ca_cert])) if ssl[:ca_cert] && ssl[:ca_cert].is_a?(String)
  ssl[:client_cert] = OpenSSL::X509::Certificate.new(File.read(ssl[:client_cert])) if ssl[:client_cert] && ssl[:client_cert].is_a?(String)
  ssl[:client_key] = OpenSSL::PKey::RSA.new(File.read(ssl[:client_key])) if ssl[:client_key] && ssl[:client_key].is_a?(String)
  @instance
end

def from_file(path)
  new(path)
end

def initialize(path = self.class.path)
  # this is a bit tricky, mixlib-config wants to extend a class and create effectively a global config object while
  # what we want to do is use an instance, so we create an anonymous class and shove it into an instance variable.
  # this is actually similar to what mixlib-config itself does to create config contexts.
  @klass = Class.new
  @klass.extend(Mixlib::Config)
  @klass.extend(BerksConfig)
  @path = File.expand_path(path)
  @klass.from_file(@path) if File.exist?(@path)
  # yeah, if !File.exist?() you just get back an empty config object
  Berkshelf.ui.warn "The `cookbook.copyright' config is deprecated and will be removed in a future release." unless cookbook.copyright.nil?
  Berkshelf.ui.warn "The `cookbook.email' config is deprecated and will be removed in a future release." unless cookbook.email.nil?
  Berkshelf.ui.warn "The `cookbook.license' config is deprecated and will be removed in a future release." unless cookbook.license.nil?
  Berkshelf.ui.warn "The `vagrant.vm.box' config is deprecated and will be removed in a future release." unless vagrant.vm.box.nil?
  Berkshelf.ui.warn "The `vagrant.vm.forward_port' config is deprecated and will be removed in a future release." unless vagrant.vm.forward_port.nil?
  Berkshelf.ui.warn "The `vagrant.vm.provision' config is deprecated and will be removed in a future release." unless vagrant.vm.provision.nil?
  Berkshelf.ui.warn "The `vagrant.vm.omnibus.version' config is deprecated and will be removed in a future release." unless vagrant.vm.omnibus.version.nil?
end

def instance
  @instance ||= new(path)
  coerce_ssl
end

def local_location
  ENV["BERKSHELF_CONFIG"] || File.join(".", ".berkshelf", "config.json")
end

def method_missing(method, *args, &block)
  @klass.send(method, *args, &block)
end

def path
  path = File.exist?(local_location) ? local_location : store_location
  File.expand_path(path)
end

def reload
  @instance = nil
  instance
end

def set_config(config)
  @instance = config
end

def set_path(new_path)
  @instance = nil
end

def store_location
  File.join(Berkshelf.berkshelf_path, "config.json")
end