Class: Car

Inherits:
Object
  • Object
show all
Defined in:
lib/car.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(model_year, make, car_model) ⇒ Car

Returns a new instance of Car.



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# File 'lib/car.rb', line 5

def initialize(model_year, make, car_model)
	@make = make.capitalize
	@model = car_model
	@model_year = model_year
  @base_url = "http://autos.aol.com/cars-#{make}-#{car_model}-#{model_year}"
	@overview_url = "#{@base_url}/overview"
	@trims_url = "#{@base_url}/available-trims/"
	@specs_url = "#{@base_url}/specs"
	@mpg_url = "#{@specs_url}/mpg"
	@trims = Array.new
	
	Struct.new(
   "ExteriorStats", 
   :length,
	  :body_width,
	  :body_height, 
	  :wheelbase, 
	  :ground_clearance, 
	  :curb, 
	  :gross_weight
	  )
 
Struct.new(
  "InteriorStats", 
 :front_head_room,
  :rear_head_room,
  :front_shoulder_room,
  :rear_shoulder_room,
  :front_hip_room,
  :rear_hip_room,
  :front_leg_room,
  :rear_leg_room,
  :luggage_capacity,
  :maximum_cargo_capacity,
  :standard_seating
  )

Struct.new(
  "PerformanceStats",
  :base_engine_size,
  :base_engine_type,
  :horsepower,
  :horsepower_rpm,
  :torque,
  :torque_rpm,
  :payload,
  :maximum_towing_capacity,
  :drive_type,
  :turning_radius
  )

Struct.new(
  "FuelEconomyStats",
  :fuel_tank_capacity,
  :epa_mileage_estimates
  )
  
	get_overview
	get_specs
	get_features
end

Instance Attribute Details

#base_url ⇒ Object

Returns the value of attribute base_url.



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# File 'lib/car.rb', line 2

def base_url
  @base_url
end

#details_url ⇒ Object

Returns the value of attribute details_url.



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# File 'lib/car.rb', line 2

def details_url
  @details_url
end

#make ⇒ Object

Returns the value of attribute make.



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# File 'lib/car.rb', line 2

def make
  @make
end

#model ⇒ Object

Returns the value of attribute model.



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# File 'lib/car.rb', line 2

def model
  @model
end

#model_year ⇒ Object

Returns the value of attribute model_year.



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# File 'lib/car.rb', line 2

def model_year
  @model_year
end

#overview ⇒ Object

Returns the value of attribute overview.



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# File 'lib/car.rb', line 2

def overview
  @overview
end

#overview_url ⇒ Object

Returns the value of attribute overview_url.



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# File 'lib/car.rb', line 2

def overview_url
  @overview_url
end

#photo_url ⇒ Object

Returns the value of attribute photo_url.



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# File 'lib/car.rb', line 2

def photo_url
  @photo_url
end

#specs_url ⇒ Object

Returns the value of attribute specs_url.



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# File 'lib/car.rb', line 2

def specs_url
  @specs_url
end

#trims ⇒ Object

Returns the value of attribute trims.



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# File 'lib/car.rb', line 2

def trims
  @trims
end

#trims_url ⇒ Object

Returns the value of attribute trims_url.



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# File 'lib/car.rb', line 2

def trims_url
  @trims_url
end

Instance Method Details

#find_trim_by_name(trim_name) ⇒ Object 



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# File 'lib/car.rb', line 215

def find_trim_by_name(trim_name)
  @trims.select { |trim| trim_name.include? trim.trim_name   }
end

#get_features ⇒ Object 



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# File 'lib/car.rb', line 201

def get_features
  car_page = Nokogiri::HTML(open(@trims_url))
  
  available_tables = car_page.xpath("//table[@class = 'availableTable']")
  available_tables.each do |table|
    trim_text  = table.xpath(".//div[@class = 'headrow']/a")[0].text
    trim = find_trim_by_name(trim_text)
  end
end

#get_overview ⇒ Object 



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# File 'lib/car.rb', line 67

def get_overview
	car_page = Nokogiri::HTML(open(@overview_url))
  
  if car_page.xpath("//title").text == "Site Map - AOL Autos"
    raise ModelDoesNotExist
  end
  
  @overview = car_page.xpath("//div[@class = 'rv_box']").text
end

#get_specs ⇒ Object 



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# File 'lib/car.rb', line 77

def get_specs
  car_page = Nokogiri::HTML(open(@specs_url))
  
  if car_page.xpath("//title").text == "Site Map - AOL Autos"
    raise ModelDoesNotExist
  end
  trim_list = car_page.xpath("//div[@class = 'sliding_columns_container']")

  category_name_table = car_page.xpath("//div[@class = 'ymm_data_table']/ul[@class = 'data_column']/li/span")

  i = 0    
  exterior_stats_names = []
  interior_stats_names = []
  performance_stats_names = []
  mpg_stats_names = []
  sub_category_name = ""
  category_name = category_name_table[i].text
  if category_name == "Exterior"
    i+=1
    until sub_category_name == "Interior"
      if sub_category_name != "";exterior_stats_names << sub_category_name; end
      sub_category_name = category_name_table[i].text
      i+=1
    end
    i+=1
    sub_category_name = category_name_table[i].text
    until sub_category_name == "Performance"
      interior_stats_names << sub_category_name
      sub_category_name = category_name_table[i].text
      i+=1
    end
    i+=1
    sub_category_name = category_name_table[i].text
    until sub_category_name == "MPG"
      performance_stats_names << sub_category_name
      sub_category_name = category_name_table[i].text
      i+=1
    end
    i+=1
    sub_category_name = category_name_table[i].text
    while i < category_name_table.size
      sub_category_name = category_name_table[i].text
      mpg_stats_names << sub_category_name
      i+=1
    end
  end
  
  interior_stats_names = unspacify(interior_stats_names)
  exterior_stats_names = unspacify(exterior_stats_names)
  performance_stats_names = unspacify(performance_stats_names)
  mpg_stats_names = unspacify(mpg_stats_names)
  total_stats = interior_stats_names.size + exterior_stats_names.size 
                + performance_stats_names.size + mpg_stats_names.size

  exterior = trim_list[0].xpath("./ul[@class = 'data_column']")
  num_trims = exterior.size
  
  # create array to hold all of the cars trim variations
  @trims = Array.new

  exterior.each do |ext|
    trim = Trim.new
    trim.trim_name = ext.xpath("./li[@class='header']/span/a").text
    @trims << trim
  end

  #visually track progress of fetching
  pbar = ProgressBar.new("Getting specs", total_stats * @trims.size )
  
  #exterior statistics for table
  exterior.each_with_index do |exterior_stats, index|
    stats = exterior_stats.xpath("./li/span")
    stat_index = 1
    exterior_stats_names.each do |stat_name|
      unless stat_name == ""
        @trims[index].exterior[stat_name.to_sym] = stats[stat_index].text
      end
      stat_index += 1
      pbar.inc
    end
  end

  #fetch interior statistics from table    
  interior = trim_list[1].xpath("./ul[@class = 'data_column']")
  interior.each_with_index do |interior_stats, index|
    stats = interior_stats.xpath("./li/span")
    stat_index = 1
    interior_stats_names.each do |stat_name|
      unless stat_name == ""
        @trims[index].interior[stat_name.to_sym] = stats[stat_index].text
      end
      stat_index += 1
      pbar.inc
    end
  end
  
  #fetch performance data from table
  performance = trim_list[2].xpath("./ul[@class = 'data_column']")
  performance.each_with_index do |performance_stats, index|
    stats = performance_stats.xpath("./li/span")
    stat_index = 1
    performance_stats_names.each do |stat_name|
      unless stat_name == ""
        @trims[index].performance[stat_name.to_sym] = stats[stat_index].text
      end
      stat_index += 1
      pbar.inc
    end
  end
  
  #fetch fuel economy data from table
  fuel_economy = trim_list[3].xpath("./ul[@class = 'data_column']")
  fuel_economy.each_with_index do |fuel_economy_stats, index|
    stats = fuel_economy_stats.xpath("./li/span")
    @trims[index].fuel_economy.fuel_tank_capacity = stats[1].text
    @trims[index].fuel_economy.epa_mileage_estimates = stats[2].text
    pbar.inc
  end
  
  pbar.finish

end

#print_trims ⇒ Object 



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# File 'lib/car.rb', line 211

def print_trims
  @trims.each { |trim| puts "#{trim.trim_name}\n"  }
end