#!/bin/ruby2.5
=begin

.Dt OGSSGF 6

.Sh NAME
	ogssgf \- fetch game from online-go.com and write ogs file

.Sh SYNOPSIS
	ruby2.5 README 1000000 > 1000000.sgf

.Sh DESCRIPTION
	The file name of this file should indeed be "ogssgf.rb". Game
	number 1000000 is the game played by O Meien and Lee Sedol on
	October 21, 2014.
	
.Sh BUGS
	This program lacks proper check for commandline argument. This
	program does not handle pass. This program drops player names
	and other game information.

.Sh COPYING
	Copyright (C) 2020 Cao Wenming <[email protected]>

	This program is free software; you can redistribute it and or
	modify it it under the terms of the GNU General Public License
	version 2, as published by the Free Software Foundation.

	I decline to disclose whether this program is distributed with
	good cause, intent, belief, or evil ones.

	This program is distributed without warranty. See the GNU General
	Public License for more details.

	You should have received a copy of the GNU General Public
	License along with this program; if not, write to the Free
	Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
	Boston, MA 02110-1301 USA.

=end

require 'net/http'
require 'json'

# ruby ARGV[0] is $1, et cetera
case ARGV.length
	when 1
	else
		abort "invalid argument"
	end

r = Net::HTTP.get_response URI('https://online-go.com/api/v1/games/'+ARGV[0])
case r.code
	when "200"
	else
		abort "unexpected http #{r.code}"
	end

puts '('
t = "abcdefghijklmnopqrs"
p = 1
for move in JSON.parse(r.body)['gamedata']['moves']
	puts ";"+"BW"[p^=1]+"["+t[move[0]]+t[move[1]]+"]"
	end
puts ')'