require 'git_reflow/config'

module GitReflow
  class GitServer::Base
    extend GitHelpers

    @@connection = nil

    class PullRequest
      attr_accessor :description, :html_url, :feature_branch_name, :base_branch_name, :build_status, :source_object, :number

      def initialize(attributes)
        raise "PullRequest#initialize must be implemented"
      end

      def method_missing(method_sym, *arguments, &block)
        if source_object and source_object.respond_to? method_sym
          source_object.send method_sym
        else
          super
        end
      end
    end

    def initialize(options)
      site_url     = self.class.site_url
      api_endpoint = self.class.api_endpoint

      self.class.site_url     = site_url
      self.class.api_endpoint = api_endpoint

      authenticate
    end

    def self.connection
      raise "#{self.class.to_s}.connection method must be implemented"
    end

    def self.user
      raise "#{self.class.to_s}.user method must be implemented"
    end

    def self.api_endpoint
      raise "#{self.class.to_s}.api_endpoint method must be implemented"
    end

    def self.api_endpoint=(api_endpoint, options = {local: false})
      raise "#{self.class.to_s}.api_endpoint= method must be implemented"
    end

    def self.site_url
      raise "#{self.class.to_s}.site_url method must be implemented"
    end

    def self.site_url=(site_url, options = {local: false})
      raise "#{self.class.to_s}.site_url= method must be implemented"
    end

    def self.project_only?
      GitReflow::Config.get("reflow.local-projects", all: true).include? "#{remote_user}/#{remote_repo_name}"
    end

    def connection
      @connection ||= self.class.connection
    end

    def authenticate
      raise "#{self.class.to_s}#authenticate method must be implemented"
    end

    def find_open_pull_request(options)
      raise "#{self.class.to_s}#find_open_pull_request(options) method must be implemented"
    end

    def pull_request_comments(pull_request)
      raise "#{self.class.to_s}#pull_request_comments(pull_request) method must be implemented"
    end

    def has_pull_request_comments?(pull_request)
      pull_request_comments(pull_request).count > 0
    end

    def last_comment_for_pull_request(pull_request)
      raise "#{self.class.to_s}#last_comment_for_pull_request(pull_request) method must be implemented"
    end

    def get_build_status sha
      raise "#{self.class.to_s}#get_build_status(sha) method must be implemented"
    end

    def colorized_build_description status
      raise "#{self.class.to_s}#colorized_build_description(status) method must be implemented"
    end

    def reviewers(pull_request)
      raise "#{self.class.to_s}#reviewers(pull_request) method must be implemented"
    end

    def approvals(pull_request)
      raise "#{self.class.to_s}#approvals(pull_request) method must be implemented"
    end

    def reviewers_pending_response(pull_request)
      reviewers(pull_request) - approvals(pull_request)
    end
  end
end