module Configuration
  module Methods
    def pod_uri
      return @pod_uri unless @pod_uri.nil?

      url = environment.url.get
      url = "http://#{url}" unless url =~ /^(https?:\/\/)/
      url << "/" unless url.end_with?("/")

      begin
        @pod_url = Addressable::URI.parse(url)
      rescue
        puts "WARNING: pod url #{url} is not a legal URI"
      end

      @pod_url
    end

    def bare_pod_uri
      pod_uri.authority.gsub('www.', '')
    end

    def configured_services
      return @configured_services unless @configured_services.nil?

      @configured_services = []
      [:twitter, :tumblr, :facebook, :wordpress].each do |service|
        @configured_services << service if services.send(service).enable?
      end

      @configured_services
    end
    attr_writer :configured_services

    def secret_token
      if heroku?
        return ENV['SECRET_TOKEN'] if ENV['SECRET_TOKEN']
        warn "FATAL: Running on Heroku with SECRET_TOKEN unset"
        warn "       Run heroku config:add SECRET_TOKEN=#{SecureRandom.hex(40)}"
        Process.exit(1)
      else
        token_file = File.expand_path(
          '../config/initializers/secret_token.rb',
          File.dirname(__FILE__)
        )
        unless File.exist? token_file
          `bundle exec rake generate:secret_token`
        end
        require token_file
        Diaspora::Application.config.secret_key_base
      end
    end

    def version_string
      return @version_string unless @version_string.nil?
      @version_string = version.number.to_s
      @version_string << "-p#{git_revision[0..7]}" if git_available?
      @version_string
    end

    def git_available?
      return @git_available unless @git_available.nil?

      if heroku?
        @git_available = false
      else
        `which git`
        `git status 2> /dev/null` if $?.success?
        @git_available = $?.success?
      end
    end

    def git_revision
      get_git_info if git_available?
      @git_revision
    end
    attr_writer :git_revision

    def git_update
      get_git_info if git_available?
      @git_update
    end
    attr_writer :git_update

    def rails_asset_id
      (git_revision || version)[0..8]
    end

    def get_redis_options
      if redistogo_url.present?
        warn "WARNING: using the REDISTOGO_URL environment variable is deprecated, please use REDIS_URL now."
        ENV['REDIS_URL'] = redistogo_url
      end

      redis_options = {}

      redis_url = ENV['REDIS_URL'] || environment.redis.get

      if ENV['RAILS_ENV']== 'integration2'
        redis_options[:url] = "redis://localhost:6380"
      elsif redis_url.present?
        unless redis_url.start_with?("redis://") || redis_url.start_with?("unix:///")
          warn "WARNING: Your redis url (#{redis_url}) doesn't start with redis:// or unix:///"
        end
        redis_options[:url] = redis_url
      end

      redis_options[:namespace] = AppConfig.environment.sidekiq.namespace.get

      redis_options
    end

    def sidekiq_log
      path = Pathname.new environment.sidekiq.log.get
      path = Rails.root.join(path) unless pathname.absolute?
      path.to_s
    end

    def postgres?
      defined?(ActiveRecord::ConnectionAdapters::PostgreSQLAdapter) &&
      ActiveRecord::Base.connection.is_a?(ActiveRecord::ConnectionAdapters::PostgreSQLAdapter)
    end

    def bitcoin_donation_address
      if AppConfig.settings.bitcoin_wallet_id.present?
        warn "WARNING: bitcoin_wallet_id is now bitcoin_address. Change in diaspora.yml."
        return AppConfig.settings.bitcoin_wallet_id
      end

      if AppConfig.settings.bitcoin_address.present?
        AppConfig.settings.bitcoin_address
      end
    end

    private

    def get_git_info
      return if git_info_present? || !git_available?

      git_cmd = `git log -1 --pretty="format:%H %ci"`
      if git_cmd =~ /^(\w+?)\s(.+)$/
        @git_revision = $1
        @git_update = $2.strip
      end
    end

    def git_info_present?
      @git_revision || @git_update
    end
  end
end