require_relative "../../helper"
require_relative "../../../lib/fabriq/logging"
require_relative "../../../lib/fabriq/plugin_port"

describe Fabriq::PluginPort do

  before do
    @port = Fabriq::PluginPort
  end

  describe '#plugin_load_paths' do
    before do
      Dir.stubs(:glob)
      File.stubs(:expand_path).returns("/home")
    end

    it "returns all plugins in HOME/.fabriq/plugins" do
      Dir.expects(:glob).with("/home/.fabriq/plugins/*").returns( ["plugin_dir"] )
      @port.plugin_load_paths.must_include("plugin_dir")
    end

    it "returns all plugins in current run path/plugins" do
      Dir.stubs(:pwd).returns("/path/pwd")
      Dir.expects(:glob).with("/path/pwd/plugins/*").returns( ["plugin_dir"] )
      @port.plugin_load_paths.must_include("plugin_dir")
    end
  end

  describe '#require_plugins' do
    before do
      File.stubs(:exist?).returns(true)
    end

    it "requires all plugins from path" do
      @port.stubs(:plugin_load_paths).returns(["plugin/path"])
      @port.expects(:require_plugin_from_path).with("plugin/path")
      @port.require_plugins
    end

    it "skips plugin paths that doesn't exist" do
      File.stubs(:exist?).returns(false)
      @port.stubs(:plugin_load_paths).returns(["plugin/path"])
      @port.expects(:require_plugin_from_path).never
      @port.require_plugins      
    end
  end

  describe '#require_plugin_from_path' do
    before do
      File.stubs(:exist?).returns(true)
    end

    it "requires the plugins main file" do
      @port.expects(:require).with("/plugin/maja_calendar/lib/maja_calendar.rb")
      @port.require_plugin_from_path("/plugin/maja_calendar")
    end

    it "logs an error message if the plugin's main file could not be found" do
      File.stubs(:exist?).returns(false)
      @port.expects(:error)
      @port.require_plugin_from_path("/plugin/maja_calendar")      
    end
  end

  describe '#register_plugin' do
    before do
      @plugin_klass = mock('Plugin Klass')
      @plugin_instance = mock('Plugin Instance')
      @plugin_klass.stubs(:init).returns(@plugin_instance)
      @port.stubs(:invoke_plugin_callback)
    end

    it "inits the plugin" do
      @plugin_klass.expects(:init)
      @port.register_plugin(@plugin_klass)
    end

    it "appends the initialized plugin to the plugins collection" do
      @port.register_plugin(@plugin_klass)
      @port.plugins.must_include(@plugin_instance)
    end

    it "invokes the plugin configuration, passing the plugins configurator object" do
      configurator = mock('configurator')
      config_proc = -> {}
      @plugin_instance.stubs(:configurator).returns(configurator)
      config_proc.expects(:call).with(configurator)
      @port.register_plugin(@plugin_klass, &config_proc)
    end

    it "sends the 'registered' event to the plugin" do
      @port.expects(:invoke_plugin_callback).with(@plugin_instance, :registered)
      @port.register_plugin(@plugin_klass)
    end
  end

  describe '#initialize_plugins' do
    it "sends the 'initialized' event to each registered plugin" do
      plugin = mock('Plugin')
      @port.plugins = [ plugin ]
      @port.expects(:invoke_plugin_callback).with(plugin, :initialized)
      @port.initialize_plugins
    end
  end

end