#!/usr/bin/ruby

require 'nntplib'

require 'uudec'
require 'ydec'

dbname = ENV['dbname'] || 'newsgroupindex.full.db'
db = SQLite3::Database.new dbname

group = ARGV.shift
regex = /#{ARGV.shift}/i

Dir.chdir ARGV.shift

if group != 'all'
spec = ' where groupid=' + db.get_first_value('select id from groups where name=?', group).to_s
raise 'unknown group name' if spec[-1] == ?=
end

artids = []
gname = {}
lastsubj = ''
db.execute("select id, subject, groupid from articles#{spec} order by groupid, subject") { |id, subj, gid|
	next if subj !~ regex
if (subj = subj.gsub(/\d/, '')) != lastsubj
lastsubj = subj
puts subj
end
	artids << [id.to_i, gid.to_i]
	gname[gid.to_i] ||= db.get_first_value('select name from groups where id=?', gid)
}
db.close

uu = UUdecoder.new
yy = Ydec.new

in_uu = false
in_yy = false

s = NntpClient.new 'news.free.fr'
curgrpid = nil
artids.each { |id, gid|
	if gid != curgrpid
		s.group gname[gid]
		puts "\n [+] group #{gname[gid]}"
		curgrpid = gid
	end

	s.body(id) { |l|
		if in_uu
			in_uu = uu.parse_line l
		elsif in_yy
			in_yy = yy.parse_line l
		else
			in_uu = uu.parse_line l
			n_yy = yy.parse_line l if not in_uu
		
		end
	}
}
s.quit