module HappyCommit
  module OnCommit
    def self.included(base)
      base.class_eval do
        base.extend ClassMethods
      end
    end

    module ClassMethods
      def on_commit
        order, commits = self.commits
        pos = order.index(current_name)+1

        if pos == 1
          puts ">> Congrats!! you are the most committer of all time with #{commits[current_name]} commits!"
        elsif pos == 2
          puts ">> You need #{commits[order.first] - commits[current_name]} commits to reach #{order.first}(the champion)"
        end

        order, commits = self.commits_today
        pos = order.index(current_name)+1
        if pos == 1
          puts ">> Congrats!! you are the most committer today with #{commits[current_name]} commits!"
        elsif pos == 2
          puts ">> You need #{commits[order.first] - commits[current_name]} commits to reach #{order.first}(the champion)"
        elsif pos
          puts ">> You have committed #{commits[current_name]} times today, congrats!"
        end
      end

      def current_name
        @current_name||=`git config user.name`.strip
      end

      def commits
        commits = {}
        order = []
        count = 0
        `git shortlog  -s -n -m HEAD`.each_line do |line|
          if line =~ /\s+(\d+)\s+(.+)$/
            name = $2.strip
            commits[name] = $1.to_i
            order << name
            count += 1

            break if count >= 5
          end
        end

        [order, commits]
      end

      def commits_today
        hours = Time.now.strftime("%k").to_i-5
        order = []
        count = 0
        commits = {}
        `git shortlog  -s -n -m --since="#{hours} hours ago" HEAD`.each_line do |line|
          if line =~ /\s+(\d+)\s+(.+)$/
            name = $2.strip
            commits[name] = $1.to_i
            order << name
            count += 1

            break if count >= 5
          end
        end

        [order, commits]
      end
    end
  end
end