require 'highline'

module GitHelper
  class HighlineCli
    def new_branch_name
      ask('New branch name?')
    end

    def title
      ask('Title?')
    end

    def base_branch
      ask('Base branch?')
    end

    def merge_request_id
      ask('Merge Request ID?')
    end

    def pull_request_id
      ask('Pull Request ID?')
    end

    def accept_autogenerated_title?(autogenerated_title)
      return false unless autogenerated_title
      answer = ask("Accept the autogenerated merge request title '#{autogenerated_title}'? (y/n)")
      !!(answer =~ /^y/i)
    end

    def base_branch_default?(default_branch)
      answer = ask("Is '#{default_branch}' the correct base branch for your new merge request? (y/n)")
      !!(answer =~ /^y/i)
    end

    def squash_merge_request?
      answer = ask('Squash merge request? (y/n)')
      !!(answer =~ /^y/i)
    end

    def remove_source_branch?
      answer = ask('Remove source branch after merging? (y/n)')
      !!(answer =~ /^y/i)
    end

    def merge_method
      merge_options = [ 'merge', 'squash', 'rebase' ]
      index = ask_options("Merge method?", merge_options)
      merge_options[index]
    end

    def apply_template?(template_file_name)
      answer = ask("Apply the merge request template from #{template_file_name}? (y/n)")
      !!(answer =~ /^y/i)
    end

    def template_to_apply(template_options, request_type)
      complete_options = template_options << 'None'
      index = ask_options("Which #{request_type} request template should be applied?", complete_options)
      complete_options[index]
    end

    #######################
    ### GENERAL METHODS ###
    #######################

    private def ask(prompt)
      highline_client.ask(prompt) do |conf|
        conf.readline = true
      end.to_s
    end

    private def ask_options(prompt, choices)
      choices_as_string_options = ''
      choices.each { |choice| choices_as_string_options << "#{choices.index(choice) + 1}. #{choice}\n" }
      compiled_prompt = "#{prompt}\n#{choices_as_string_options.strip}"

      highline_client.ask(compiled_prompt) do |conf|
        conf.readline = true
      end.to_i - 1
    end

    private def highline_client
      @highline_client ||= HighLine.new
    end
  end
end