module Git

# File lib/Git/git.rb, line 2
def self.checkout(branch, options = :with_fetch)
  fetch(branch) if options == :with_fetch
  print "checkout: ".yellow
  print "#{branch}\n\n".green
  execute {"git checkout #{branch}"}
  self.pull branch
end

# File lib/Git/git.rb, line 44
def self.delete_branch branch
  print "Delete branch: ".yellow
  print "#{branch} \n\n".green
  system("git checkout develop && git branch -D #{branch}")
end

# File lib/Git/git.rb, line 93
def self.exist_branch? branch
  execute {"git fetch origin #{branch}"}

end

# File lib/Git/git.rb, line 80
def self.fetch branch
  print "Fetch: ".yellow
  print "origin/#{branch}\n\n".green
  system "git fetch origin #{branch}"
end

# File lib/Git/git.rb, line 70
def self.log_last_changes branch
  execute {"git log origin/#{branch}..HEAD --oneline --format='%ad - %B'"}
end

# File lib/Git/git.rb, line 10
def self.merge from, to
  # self.checkout(from)
  checkout(to, :local)
  print "Merge ".yellow
  print "#{from} ".green
  print "into ".yellow
  print "#{to} \n\n".green
  processs, stderr , stdout= Open3.popen3("git pull origin #{from}") do |i, o, stderr, wait_thr|
    [wait_thr.value, stderr.read, o.read] 
  end
  if processs.success?
    return stdout
  else
    print "Conflicts on merge!".yellow.bg_red
    print "\n\nResolve conflicts and commit. \n"
    print "After type '1' for to continue or '0' for abort\n".yellow
    choice = STDIN.gets.chomp
    print "\n#{choice}, "
    print "ok!\n".green

    case choice
    when '1'
      print "Continuing...\n\n"
    else
      print "Aborting merge...\n\n"
      system ('git merge --abort')
      raise 'Aborting...'
    end

  end

  # execute {"git pull origin #{from}"}
end

# File lib/Git/git.rb, line 86
def self.new_branch branch
  print "Create new branch: ".yellow
  print "#{branch}\n".green
  system  "git checkout -b #{branch}"
end

# File lib/Git/git.rb, line 74
def self.pull branch
  print "Pull: ".yellow
  print "#{branch}\n\n".green
  system "git pull origin #{branch}"
end

# File lib/Git/git.rb, line 58
def self.push branch
  print "Push: ".yellow
  print "#{branch}\n\n".green
  execute {"git push origin #{branch}"}
end

# File lib/Git/git.rb, line 64
def self.push_force branch
  print "Push --force: ".yellow
  print "#{branch}\n\n".green
  execute {"git push origin #{branch} -f"}
end

# File lib/Git/git.rb, line 50
def self.reset_hard from, to
  self.fetch from
  self.checkout(to)
  print "Reset --hard:  #{to} is equal: ".yellow
  print "origin/#{from}\n".green
  system "git reset --hard origin/#{from}\n\n"
end

# File lib/Git/git.rb, line 101
def self.execute
  processs, stderr , stdout= Open3.popen3(yield) do |i, o, stderr, wait_thr|
    [wait_thr.value, stderr.read, o.read] 
  end
  if processs.success?
    return stdout
  end
  raise "#{stderr}"
end