require "faraday"
require "faraday/retry"
require "octokit"

module TerraspaceVcsGithub
  class Interface
    extend Memoist
    include Terraspace::Cloud::Vcs::Interface

    def comment(body)
      return unless github_token?

      logger.debug "Adding comment to full_repo #{full_repo} number #{pr_number}"
      comments = client.issue_comments(full_repo, pr_number)
      found_comment = comments.find do |comment|
        comment.body.starts_with?(MARKER)
      end

      if found_comment
        client.update_comment(full_repo, found_comment.id, body) unless found_comment.body == body
      else
        client.add_comment(full_repo, pr_number, body)
      end
    rescue Octokit::Unauthorized => e
      logger.info "WARN: #{e.message}. Unable to create pull request comment. Please double check your github token"
    end

    def client
      Octokit::Client.new(access_token: ENV['GH_TOKEN'])
    end
    memoize :client

    def github_token?
      if ENV['GH_TOKEN']
        true
      else
        puts "WARN: The env var GH_TOKEN is not configured. Will not post PR comment"
        false
      end
    end
  end
end