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require 'httparty'
require 'nokogiri'
require 'date'
class NokogiriParser < HTTParty::Parser
def html
Nokogiri::HTML(body)
end
end
class HVPage
include HTTParty
parser NokogiriParser
base_uri "http://www.holidayvalley.com"
end
page = HVPage.get("/HolidayValley/snowreport.aspx")
class InvalidData < Exception
end
module Transforms
def self.parse_range(value)
value.split("-").map(&:to_i)
end
def self.to_int(value)
value.to_i
end
def self.is_true(value)
value.downcase == "yes"
end
def self.parse_date(value)
Date.strptime(value, "%m/%d/%Y").strftime("%a, %d %b %Y %H:%M:%S %Z")
end
def self.parse_date_time(value)
DateTime.parse(value).strftime("%a, %d %b %Y %H:%M:%S %Z")
end
def self.parse_open(value)
value.downcase == "open"
end
def self.parse_groomed(value)
value.downcase == "groomed"
end
def self.parse_snowmaking(value)
value.downcase == "new"
end
def self.parse_difficulty(url)
if /green\.gif/ =~ url
"Easier"
elsif /blue\.gif/ =~ url
"Intermediate"
elsif /black\.gif/ =~ url
"Advanced"
elsif /doubleBlack\.gif/ =~ url
"Expert"
elsif /freestyle\.gif/ =~ url
"Freestyle"
end
end
def self.parse_lift_name(value)
data = /([^(]+)\(([^']*)'\)/.match(value)
[data[1].strip, data[2].to_i]
end
end
MTN_REPORT_XPATH = {
last_updated: ["//table[1]/tr[1]/td[2]/text()", :last, Transforms.method(:parse_date_time)],
report_for: ["//table[1]/tr[2]/td[2]/text()", 1, Transforms.method(:parse_date)],
snowfall_24hr: ["//table[1]/tr[3]/td[2]/text()", :first, Transforms.method(:to_int)],
snowfall_48hr: ["//table[1]/tr[4]/td[2]/text()", :first, Transforms.method(:to_int)],
snowfall_7day: ["//table[1]/tr[5]/td[2]/text()", :first, Transforms.method(:to_int)],
snowfall_season: ["//table[1]/tr[6]/td[2]/text()", :first, Transforms.method(:to_int)],
base_depth: ["//table[1]/tr[7]/td[2]/text()", :first, Transforms.method(:parse_range)],
snowmaking_current: ["//table[1]/tr[8]/td[2]/text()", :first, Transforms.method(:is_true)],
snowmaking_24hours: ["//table[1]/tr[9]/td[2]/text()", :first, Transforms.method(:is_true)],
primary_surface: ["//table[1]/tr[10]/td[2]/text()", :first, String.method(:new)],
secondary_surface: ["//table[1]/tr[11]/td[2]/text()", :first, String.method(:new)],
}
def get_transformed_value(page, xpath, finder, transform)
data = page.xpath(xpath)
data = finder.is_a?(Symbol) ? data.send(finder) : data[finder]
transform.call(data.text)
end
def get_trail_info(page, row)
data = page.xpath("//table[2]/tr[#{row}]/child::*").map(&:text)
difficulty_info = page.xpath("//table[2]/tr[#{row}]/td/img/@src").to_s
if data.size != 6
raise InvalidData.new("Invalid data in row")
end
{
trail_name: data[0],
difficulty: Transforms.parse_difficulty(difficulty_info),
open_day: Transforms.parse_open(data[2]),
open_night: Transforms.parse_open(data[3]),
groomed: Transforms.parse_groomed(data[4]),
snow_making: Transforms.parse_snowmaking(data[5]),
}
end
def get_lift_info(page, row)
data = page.xpath("//table[3]/tr[#{row}]/child::*").map(&:text)
if data.size != 4
raise InvalidData.new("Invalid data in row")
end
lift_name, vertical = Transforms.parse_lift_name(data[0])
{
lift_name: lift_name,
vertical: vertical,
open_day: Transforms.parse_open(data[1]),
open_night: Transforms.parse_open(data[2]),
notes: data[3],
}
end
i = 3
while true
begin
puts get_trail_info(page, i)
i += 1
rescue InvalidData
break
end
end
k = {}
MTN_REPORT_XPATH.each do |key, value|
data = get_transformed_value(page, *value)
k[key] = data
end
puts k
i = 2
while true
begin
puts get_lift_info(page, i)
i += 1
rescue InvalidData
break
end
end
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