羽田空港の駐車場の予約キャンセルをいち早く検知するスクリプト

羽田空港の駐車場予約がかなり激戦なので作りました。
ほんとどうでもいい内容なので、ソースだけのせて終了します。

require 'open-uri'
require 'nokogiri'

@reserve_days = [28, 29, 30]

def reserved_dai2ordai3?(doc, parking_num, day) 
    index = 0
    if parking_num == 2
        index = 1 #td index
    elsif parking_num == 3
        index = 3 #td index
    end
    doc.css("#guide_01 table tr")[2].css("td")[index].css(".calday").each do |dom| 
        if dom.text == "#{day}"
            return dom.attribute("class").value.include?("bgRed")
        end
    end
end

def reserved_dai4?(doc, day) 
    doc.css("#calendar01 table.calendar_waku td").each do |dom| 
        if dom.text == "#{day}"
            return dom.attribute("class").value.include?("full")
        end
    end
end

def can_reserve?(parking_num, days)
    if parking_num == 4 
        doc = make_doc('https://haneda-p4.jp/airport/entrance/0000.jsf')
        days.each do |day|
            if reserved_dai4?(doc, day)
                return false
            end
        end 
    else
        doc = make_doc('https://hnd-rsv.aeif.or.jp/airport/entrance/0000.jsf')
        days.each do |day|
            if reserved_dai2ordai3?(doc, parking_num, day)
                return false
            end
        end 
    end
    return true
end

def make_doc(url)
    charset = nil
    html = open(url) do |f|
      charset = f.charset
      f.read
    end

    doc = Nokogiri::HTML.parse(html, nil, charset)
end

# dai2
p can_reserve?(2, @reserve_days)

# dai3
p can_reserve?(3, @reserve_days)

# dai4
p can_reserve?(4, @reserve_days)