require 'spec_helper'

describe(RCAP::CAP_1_0::Area) do
  context('on initialisation') do
    before(:each) do
      @area = RCAP::CAP_1_0::Area.new

      @original_area = RCAP::CAP_1_0::Area.new do |area|
        area.area_desc = 'Area Description'
        area.altitude  = 100
        area.ceiling   = 200

        area.add_circle do |circle|
          circle.lattitude = 0
          circle.longitude = 0
          circle.radius    = 100
        end

        area.add_geocode do |geocode|
          geocode.name  = 'name'
          geocode.value = 'value'
        end

        area.add_polygon.add_point do |point|
          point.lattitude = 1
          point.longitude = 2
        end
      end
    end

    # Atomic
    it('should not have a area_desc') { @area.area_desc.should(be_nil) }
    it('should not have a altitude') { @area.altitude.should(be_nil) }
    it('should not have a ceiling') { @area.ceiling.should(be_nil) }

    # Group
    it('should have an empty polygons') { @area.polygons.should(be_empty) }
    it('should have an empty circles') { @area.circles.should(be_empty) }
    it('should have an empty geocodes') { @area.geocodes.should(be_empty) }

    shared_examples_for('it can parse into a CAP 1.0 Area object') do
      it('should parse the area_desc correctly') do
        @area.area_desc.should == @original_area.area_desc
      end

      it('should parse the altitude correctly') do
        @area.altitude.should == @original_area.altitude
      end

      it('should parse the ceiling correctly') do
        @area.ceiling.should == @original_area.ceiling
      end

      it('should parse the circles correctly') do
        @area.circles.should == @original_area.circles
      end

      it('should parse the geocodes correctly') do
        @area.geocodes.should == @original_area.geocodes
      end

      it('should parse the polygons correctly') do
        @area.polygons.should == @original_area.polygons
      end
    end

    context('from XML') do
      before(:each) do

        @alert = RCAP::CAP_1_0::Alert.new
        @alert.add_info.areas <<  @original_area
        @xml_string = @alert.to_xml
        @xml_document = REXML::Document.new(@xml_string)
        @info_xml_element = RCAP.xpath_first(@xml_document.root, RCAP::CAP_1_0::Info::XPATH, RCAP::CAP_1_0::Alert::XMLNS)
        @area_xml_element = RCAP.xpath_first(@info_xml_element, RCAP::CAP_1_0::Area::XPATH, RCAP::CAP_1_0::Alert::XMLNS)
        @area = RCAP::CAP_1_0::Area.from_xml_element(@area_xml_element)
      end

      it_should_behave_like('it can parse into a CAP 1.0 Area object')
    end

    context('from YAML Data') do
      before(:each) do

        @area = RCAP::CAP_1_0::Area.from_yaml_data(YAML.load(@original_area.to_yaml))
      end

      it_should_behave_like('it can parse into a CAP 1.0 Area object')
    end

    context('from a hash') do
      before(:each) do

        @area = RCAP::CAP_1_0::Area.from_h(@original_area.to_h)
      end

      it_should_behave_like('it can parse into a CAP 1.0 Area object')
    end
  end

  context('when exported') do
    before(:each) do
      @area = RCAP::CAP_1_0::Area.new do |area|
        area.area_desc = 'Area Description'
        area.altitude  = 100
        area.ceiling   = 200

        area.add_circle do |circle|
          circle.lattitude = 0
          circle.longitude = 0
          circle.radius    = 100
        end

        area.add_geocode do |geocode|
          geocode.name  = 'name'
          geocode.value = 'value'
        end

        area.add_polygon.add_point do |point|
          point.lattitude = 1
          point.longitude = 1
        end
      end
    end

    context('to a hash') do
      before(:each) do
        @area_hash = @area.to_h
      end

      it('should export the area description correctly') do
        @area_hash[ RCAP::CAP_1_0::Area::AREA_DESC_KEY].should == @area.area_desc
      end

      it('should export the altitude correctly') do
        @area_hash[ RCAP::CAP_1_0::Area::ALTITUDE_KEY].should == @area.altitude
      end

      it('should set the ceiling correctly') do
        @area_hash[ RCAP::CAP_1_0::Area::CEILING_KEY].should == @area.ceiling
      end

      it('should export the circles correctly') do
        @area_hash[ RCAP::CAP_1_0::Area::CIRCLES_KEY].should == @area.circles.map { |circle| circle.to_a }
      end

      it('should export the geocodes correctly') do
        @area_hash[ RCAP::CAP_1_0::Area::GEOCODES_KEY].should == @area.geocodes.map { |geocode| geocode.to_h }
      end

      it('should export the polygons correctly') do
        @area_hash[ RCAP::CAP_1_0::Area::POLYGONS_KEY].should == @area.polygons.map { |polygon| polygon.to_h }
      end
    end
  end

  context('is not valid if') do
    before(:each) do
      @area = RCAP::CAP_1_0::Area.new do |area|
        area.area_desc = 'Cape Town Metropole'
      end
      @area.should(be_valid)
    end

    it('does not have an area descrtiption (area_desc)') do
      @area.area_desc = nil
      @area.should_not(be_valid)
    end

    it('has a ceiling defined but no altitude') do
      @area.ceiling = 1
      @area.altitude = nil
      @area.should_not(be_valid)
    end

    context('it contains circles and it') do
      before(:each) do
        @area.add_circle do |circle|
          circle.lattitude = 0
          circle.longitude = 0
          circle.radius = 1
        end
        @area.should(be_valid)
      end

      it('has an invalid circle') do
        @area.circles.first.lattitude = nil
        @area.should_not(be_valid)
      end
    end

    context('it contains polygons and it') do
      before(:each) do
        @polygon = RCAP::CAP_1_0::Polygon.new
        [[0, 0], [0, 1], [0, 0]].each do |lattitude, longitude|
          @polygon.add_point do |point|
            point.lattitude = lattitude
            point.longitude = longitude
          end
        end

        @area.polygons << @polygon
        @area.should(be_valid)
      end

      it('has an invalid polygon') do
        @polygon.points.first.lattitude = nil
        @area.should_not(be_valid)
      end
    end

    context('it contains geocodes and it') do
      before(:each) do
        @area.add_geocode do |geocode|
          geocode.name = 'foo'
          geocode.value = 'bar'
        end
        @area.should(be_valid)
      end

      it('has an invalid geocode') do
        @area.geocodes.first.name = nil
        @area.should_not(be_valid)
      end
    end
  end

  describe('instance methods') do
    before(:each) do
      @area = RCAP::CAP_1_0::Area.new
    end

    describe('#add_polygon') do
      before(:each) do
        @polygon = @area.add_polygon
      end

      it('should return a CAP 1.0 Polygon') do
        @polygon.class.should == RCAP::CAP_1_0::Polygon
      end

      it('should add a Polygon to the polygons attribute') do
        @area.polygons.size.should == 1
      end
    end

    describe('#add_circle') do
      before(:each) do
        @circle = @area.add_circle do |circle|
          circle.lattitude = 1
          circle.longitude = 1
          circle.radius = 1
        end
      end

      it('should return a CAP 1.0 Circle') do
        @circle.class.should == RCAP::CAP_1_0::Circle
        @circle.lattitude.should == 1
        @circle.longitude.should == 1
        @circle.radius.should == 1
      end

      it('should add a circle to the circles attribute') do
        @area.circles.size.should == 1
      end
    end

    describe('#add_geocode') do
      before(:each) do
        @geocode = @area.add_geocode do |geocode|
          geocode.name = 'Geocode'
          geocode.value = '123'
        end
      end

      it('should return a CAP 1.0 Geocode') do
        @geocode.class.should == RCAP::CAP_1_0::Geocode
        @geocode.name.should == 'Geocode'
        @geocode.value.should == '123'
      end

      it('should add a geocode to the geocodes attribute') do
        @area.geocodes.size.should == 1
      end
    end
  end
end