module GGSM
  module Submodule
    def check_submodule
      sub_str = `git submodule`
      if sub_str.empty?
        puts '所在目录工程下不存在Submodule，请检查所在目录！'.red
        exit 1
      end

      switch_dir
      check_hooks
    end

    def get_submodule
      pattern = /(?<=\s)[\/0-9a-zA-Z]*(?=\s)/

      sub_status = `git submodule`
      sub_status = sub_status.split(/\n/)
      match = pattern.match(sub_status[0])

      if match==nil
        puts '==> 初始化子模块'.yellow
        `git submodule update --init --recursive`
        sub_status = `git submodule`
        sub_status = sub_status.split(/\n/)
      end

      result = []
      sub_status.each do |sub|
        match = pattern.match(sub.strip)
        result.push(match[0])
      end
      result
    end

    def get_submodule_commit
      sub_tree = 'git ls-tree HEAD | grep "160000"'
      sub_commits = `#{sub_tree}`
      if sub_commits.strip == '' && (File.directory? 'submodules')
        Dir.chdir 'submodules'
        sub_commits = `#{sub_tree}`
        Dir.chdir '..'
      end
      pattern = /(?<=\s)[0-9a-zA-Z]{40}(?=\s)/
      sub_commits = sub_commits.split(/\n/)
      result = []
      sub_commits.each do |sub|
        match = pattern.match(sub.strip)
        result.push(match[0][0...7])
      end
      result
    end

    def check_un_commit_code
      subs = get_submodule
      project_path = Dir.pwd
      subs.each do |sub|
        Dir.chdir sub
        status = `git status --ignore-submodules | grep 'nothing to commit'`
        if status.strip == ''
          puts "#{sub} 有未提交的代码".red
          exit 1
        end
        Dir.chdir project_path
      end

      status = `git status --ignore-submodules | grep 'nothing to commit'`
      if status.strip == ''
        puts '主工程 有未提交的代码'.red
        exit 1
      end
    end

    def foreach_module
      subs = get_submodule
      project_path = Dir.pwd
      subs.each do |sub|
        Dir.chdir sub
        puts "==> 进入#{sub}：".yellow
        yield sub, subs.index(sub)
        Dir.chdir project_path
      end
    end

    def get_current_branch
      `git branch | grep "*"`.split('* ')[1].split("\n")[0]
    end

    def tip_contact_author
      latest_commit = `git log test -1 --oneline | grep ''`.split(' ')[0]
      author = `git show #{latest_commit}|grep "Author:"`.chomp
      puts "请联系#{author} 推送远程缺失的commit".red
    end

    def switch_dir
      if File.exist?('.git')
        return
      end

      Dir.chdir '..'
      switch_dir
    end

    def check_hooks
      version = `ggsm v`
      subs = get_submodule
      subs.each do |sub|
        cp_hooks(version, sub)
      end
      cp_hooks(version, nil)
    end

    def cp_hooks(version, sub)
      if File.exist?('.git')
        if sub != nil
          config_path = ".git/modules/#{sub}/hooks/ggsm"
        else
          config_path = '.git/hooks/ggsm'
        end
        target_path = config_path.split('/ggsm')[0]
        if !File.exist?(config_path) || version != IO.read(config_path)
          path = `gem which ggsm`.split('/ggsm.rb')[0]
          `cp #{path}/ggsm/hook/commit-msg #{target_path}/commit-msg`
          `cp #{path}/ggsm/hook/pre-commit  #{target_path}/pre-commit`

          file = File.new(config_path, 'w')
          file << version
          file.close

          if sub == nil
            puts '已更新Hooks'.blue
          end
        end
      end
    end
  end
end