#!/usr/bin/env ruby
# frozen_string_literal: true

require "code_clone_detector"

require "ripper"

code = []

Dir.glob("**/*") do |file_name|
  if file_name.include?(".rb")
    File.open(file_name, "r") do |file|
      file_content = file.read
      code.push([file_name.to_s, Ripper.lex(file_content)])
    end
  end
end

max = 0
sx = 0
ex = 0
sy = 0
ey = 0
index1 = 0
index2 = 0

(0..code.size - 2).each do |a|
  p "process has been completed.. #{a / code.size.to_f * 100}%"
  (a + 1..code.size - 1).each do |b|
    array = []

    x = 0

    code[a][1].each do |i|
      array.push([])
      code[b][1].each do |j|
        if i[2] == j[2]
          array[x].push(1)
        else
          array[x].push(0)
        end
      end
      x += 1
    end

    tmp_max = 0
    tmp_sx = 0
    tmp_ex = 0
    tmp_sy = 0
    tmp_ey = 0

    array.size.times do |i|
      array[i].size.times do |j|
        next unless array[i - 1][j - 1].nil? || array[i - 1][j - 1].zero?
        next unless array[i][j] == 1

        maxv = 1
        x = j
        y = i
        while !array[y + 1].nil? && !array[y + 1][x + 1].nil? && array[y + 1][x + 1] == 1
          maxv += 1
          x += 1
          y += 1
        end
        next unless maxv > tmp_max

        tmp_max = maxv
        tmp_sx = j
        tmp_ex = x
        tmp_sy = i
        tmp_ey = y
      end
    end

    next unless tmp_max > max

    max = tmp_max
    sx = tmp_sx
    ex = tmp_ex
    sy = tmp_sy
    ey = tmp_ey
    index1 = a
    index2 = b
  end
end

puts "\n===================================\n\n"

file_1_name = code[index1][0]
file1 = code[index1][1]
file_2_name = code[index2][0]
file2 = code[index2][1]
print "#{file_1_name}:"
print "#{file1[sy][0][0]},#{file1[sy][0][1]} ~ #{file1[ey][0][0]},#{file1[ey][0][1]}\n"
code[index1][1][sy..ey].transpose[2].each do |i|
  print i
end

puts "===============================\n\n"

print "#{file_2_name}:"
print "#{file2[sx][0][0]},#{file2[sx][0][1]} ~ #{file2[ex][0][0]},#{file2[ex][0][1]}\n"
code[index2][1][sx..ex].transpose[2].each do |i|
  print i
end