module Revepast
	module Parser
		class Utils
			def sanitize(str)
				return str.gsub /^$\n/, ''
			end

			def regex_match_lines(regex, lines)
				matches = Array.new
				bad_lines = Array.new
				lines.each do |line|
					if line.match(regex)
						# p "--#{line.chomp}"
						a = line.match(regex)
						matches.push(a.captures)
						# p matches
					else
						bad_lines.push(line.chomp)
					end
				end
				return matches, bad_lines
			end

			def parse_listing(lines)
				# 10 x Cargo Scanner II | 10x Cargo Scanner II | 10 Cargo Scanner II
				listing_re = /^([\d,'\.]+?) ?x? ([\S ]+)$/
				# Cargo Scanner II x10 | Cargo Scanner II x 10 | Cargo Scanner II 10
				listing_re2 = /^([\S ]+?) x? ?([\d,'\.]+)$/
				# Cargo Scanner II
				listing_re3 = /^([\S ]+)$/

				matches, bad_lines = regex_match_lines(listing_re, lines)
				matches2, bad_lines2 = regex_match_lines(listing_re2, bad_lines)
				matches3, bad_lines3 = regex_match_lines(listing_re3, bad_lines2)

				items = Hash.new { |h, k| h[k] = 0 }
				matches.each do |name, count|
					items[name.strip] += count.to_i
				end
				matches2.each do |name, count|
					items[name.strip] += count.to_i
				end
				matches3.each do |res|
					items[res[0].strip] += 1
				end
				results = []
				items.each do |name, quantity|
					results << {
						'name' => name,
						'quantity' => quantity
						}
				end
				return results, bad_lines3
			end

		end
	end
end