parse-countries.cr

require "json"

hashes = Hash(String, FlattenedCountry).new

class CountryName
  JSON.mapping(
    common: String,
    official: String
  )
end

class CountryIdd
  JSON.mapping(
    root: String,
    suffixes: Array(String)
  )
end

class Country
  JSON.mapping(
    name: CountryName,
    idd: CountryIdd,
    cca2: String
  )
end

class FlattenedCountry
  def initialize(@name : String, @calling_code : String, @iso_8166 : String)
  end
  JSON.mapping(
    name: String,
    calling_code: String,
    iso_8166: String
  )
end

contents = File.read("./countries.json")
countries = Array(Country).from_json(contents)

# puts(countries.to_json)
(countries.map { |c|
  if c.idd.suffixes.size == 1
    FlattenedCountry.new(c.name.official, c.idd.root + c.idd.suffixes[0], c.cca2)
  else
    FlattenedCountry.new(c.name.official, c.idd.root, c.cca2)
  end
}).each{|j| hashes[j.iso_8166] = j }
# .map{ |j|
#   "'#{j.iso_8166}': \"#{j.to_json}\""
# }

puts hashes.to_json