delete hatenabookmark tag

delete_hatena_bookmark_tags.rb

require 'uri'
require 'rubygems'
require 'highline'
require 'mechanize'

class HatenaBookmark

  ENDPOINT = 'http://b.hatena.ne.jp/'

  def initialize(username, password)
    @username = username
    @mech = WWW::Mechanize.new
    @rks = login(username, password)
  end

  def login(username, password)
    @mech.get('https://www.hatena.ne.jp/login')
    @mech.page.form_with(:action => '/login') do |f|
      f.field_with(:name => 'name').value = username
      f.field_with(:name => 'password').value = password
      f.click_button
    end
    @mech.get(ENDPOINT + username)
    @mech.page.content.match(/'#{username}',\s'(.+)'/)[1]
  end

  def rename_tag(old_name, new_name)
  end

  def delete_tag(name)
    @mech.post(
      "/#{@username}/tag.delete",
      'tag' => name,
      'rks' => @rks
    )
  end

  def get_all_tags
    tags = []
    @mech.get(ENDPOINT + @username)
    @mech.page.search('//ul[@id="tags"]/li').each do |li|
      name = li.search('.//a').text
      num = li.search('.//span').text.match(/\((\d+)\)/)[1]
      tags.push({:name => name, :num => num.to_i})
    end
    tags
  end
end

hb = HatenaBookmark.new(
  HighLine.new.ask('username: '),
  HighLine.new.ask('password: ') {|q| q.echo = '*' }
)
hb.get_all_tags.each do |tag|
  if tag[:num] <= 10
    hb.delete_tag(tag[:name])
  end
end