Generate Holidays JSON

holidays_json.rb

#!/usr/bin/env ruby
#
# Generate Holidays JSON
#
# Copyright (c) 2014 Yusuke Fujiki @ Himakan
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

require "uri"
require "open-uri"
require "json"
require "openssl"
require "optparse"

config = Hash.new
opts = OptionParser.new
opts.on("-k google_api_key", desc = "You have to get API key for Google Calendar API Access. See more: https://developers.google.com/console/help/new/#generatingdevkeys"){|v| config[:key] = v }
opts.on("-l [locale]", desc = "United States = \"us\", Japan = \"jp\", South Korea = \"kr\" (Default: \"us\")"){|v| config[:locale] = v }
opts.on("-s [start_year]", desc = "Start Year (ex. 2013, Default: this year)"){|v| config[:start_year] = v }
opts.on("-e [end_year]", desc = "End Year (ex. 2014, Default: next year)"){|v| config[:end_year] = v }
opts.on("-f [format]", desc = "Time Format, ISO 8601 = \"iso\" or Unix Time = \"unix\" (Default: \"iso\")"){|v| config[:format] = v }
opts.parse!(ARGV)

if config[:key].nil?
  puts opts
  exit
end

timezone = {
  "us" => "America/New_York",
  "jp" => "Asia/Tokyo",
  "kr" => "Asia/Seoul",
}
holiday_id = {
  "us" => URI.encode("en.usa#[email protected]"),
  "jp" => URI.encode("ja.japanese#[email protected]"),
  "kr" => URI.encode("ko.south_korea#[email protected]"),
}

start_year = config[:start_year] || DateTime.now.year.to_s
end_year = config[:end_year] || (DateTime.now.year + 1).to_s
start_date = URI.encode "#{start_year}-01-01T00:00:00.000Z"
end_date = URI.encode "#{end_year}-01-01T00:00:00.000Z"

if (!timezone.has_key?(config[:locale]))
  config[:locale] = "us"
end

ENV["TZ"] = timezone[config[:locale]]
url = "https://www.googleapis.com/calendar/v3/calendars/#{holiday_id[config[:locale]]}/events?" +
      "key=#{config[:key]}" +
      "&timeMin=#{start_date}" +
      "&timeMax=#{end_date}" +
      "&orderBy=startTime" +
      "&singleEvents=true"

response = open(url, :ssl_verify_mode => OpenSSL::SSL::VERIFY_NONE).read
result = JSON.parse response

dates = result["items"].map {|item|
  date = Time.parse(item["start"]["date"])
  if config[:format] == "unix"
    date = date.to_i
  end
  date
}

puts dates.to_json

$ ./holidays_json.rb
Usage: holidays_json [options]
    -k google_api_key                You have to get API key for Google Calendar API Access. See more: https://developers.google.com/console/help/new/#generatingdevkeys
    -l [locale]                      Japan = "jp" or South Korea = "kr" (Default: "jp")
    -s [start_year]                  Start Year (ex. 2013, Default: this year)
    -e [end_year]                    End Year (ex. 2014, Default: next year)
    -f [format]                      Time Format, ISO 8601 = "iso" or Unix Time = "unix (Default: "iso")

# Normal
$ ./holidays_json.rb -k YOUR_API_KEY -s 2014 -e 2015 -l jp
["2014-01-01 00:00:00 +0900","2014-01-02 00:00:00 +0900","2014-01-03 00:00:00 +0900","2014-01-13 00:00:00 +0900","2014-02-11 00:00:00 +0900","2014-03-21 00:00:00 +0900","2014-04-29 00:00:00 +0900","2014-05-03 00:00:00 +0900","2014-05-04 00:00:00 +0900","2014-05-05 00:00:00 +0900","2014-05-06 00:00:00 +0900","2014-07-21 00:00:00 +0900","2014-09-15 00:00:00 +0900","2014-09-23 00:00:00 +0900","2014-10-13 00:00:00 +0900","2014-11-03 00:00:00 +0900","2014-11-23 00:00:00 +0900","2014-11-24 00:00:00 +0900","2014-12-23 00:00:00 +0900","2014-12-25 00:00:00 +0900","2014-12-31 00:00:00 +0900"]

# Unix Time Stamp Format
$ ./holidays_json.rb -k YOUR_API_KEY -s 2014 -e 2015 -l jp -f unix
[1388502000,1388588400,1388674800,1389538800,1392044400,1395327600,1398697200,1399042800,1399129200,1399215600,1399302000,1405868400,1410706800,1411398000,1413126000,1414940400,1416668400,1416754800,1419260400,1419433200,1419951600]