require 'spec_helper'
require 'rails_helper'

require 'ostruct'


describe "Git diff" do
  before(:each) do

    # 参照此diff的输出  http://ucloudgit.trustie.net/Hjqreturn/pullrequesttest111/commit/f36f15bc1d3e256a4fa5115d82201af72301884e
    @content = '''
      [{"diff":"--- a/readme\n+++ b/readme\n@@ -1,7 +1,8 @@\n 邀请界面\n         1.1 界面设计 （已处理）\n-        1.2 改写成html功能 （已处理）\n+sdkfsjkdf\n         1.3 集成到游戏邀请功能 （已处理）\n+adfjsdajlfk\n         \n 微信登录功能\n         2.1 集成sdk （已处理）\n","new_path":"readme","old_path":"readme","a_mode":"100644","b_mode":"100644","new_file":false,"renamed_file":false,"deleted_file":false}]
    '''

    @output = %Q{
| 1  | 1  | 邀请界面
| 2  | 2  |         1.1 界面设计 （已处理）
| 3  |    |-<span class='idiff'>        1.2 改写成html功能 （已处理）</span>
|    | 3  |+<span class='idiff'>sdkfsjkdf</span>
| 4  | 4  |         1.3 集成到游戏邀请功能 （已处理）
|    | 5  |+adfjsdajlfk
| 5  | 6  |         } +
        %Q{
| 6  | 7  | 微信登录功能
| 7  | 8  |         2.1 集成sdk （已处理）
}
  end


  it "正确解析diff文件" do
    diff = ActiveSupport::JSON.decode(@content).first
    diff = OpenStruct.new(diff)
    diff_file = Trustie::Gitlab::Diff::File.new(diff)

    output = ''
    diff_file.diff_lines.each_with_index do |line, index|
      type = line.type
      last_line = line.new_pos
      line_old = line.old_pos.to_s


      if type == 'match'
        ## 表示没有修改，两个都要显示行号
        output += "|#{line_old.center(4)}|#{last_line.to_s.center(4)}|#{line.text}\n"
      else
        old_line = type == 'new' ? ' '*4: line_old
        new_line = type == 'old' ? ' '*4: last_line
        output += "|#{old_line.to_s.center(4)}|#{new_line.to_s.center(4)}|#{line.text}\n"
      end
    end

    puts output

    expect(output.strip).to eq(@output.strip)
  end

  
end