require 'gh'
require 'core_ext/hash/compact'

module Travis
  module Github
    require 'travis/github/services'

    class << self
      def setup
        GH.set(
          client_id:      Travis.config.oauth2.client_id,
          client_secret:  Travis.config.oauth2.client_secret,
          user_agent:     "Travis-CI/#{TravisCore::VERSION} GH/#{GH::VERSION}",
          origin:         Travis.config.host,
          api_url:        Travis.config.github.api_url,
          ssl:            Travis.config.ssl.to_h.merge(Travis.config.github.ssl || {}).to_h.compact
        )
      end

      def authenticated(user, &block)
        fail "we don't have a github token for #{user.inspect}" if user.github_oauth_token.blank?
        GH.with(:token => user.github_oauth_token, &block)
      end

      # TODO: Maybe this should move to gh?
      def scopes_for(token)
        token  = token.github_oauth_token if token.respond_to? :github_oauth_token
        scopes = GH.with(token: token.to_s) { GH.head('user') }.headers['x-oauth-scopes'] if token.present?
        scopes &&= scopes.gsub(/\s/,'').split(',')
        Array(scopes).sort
      rescue GH::Error
        []
      end
    end
  end
end