require "./database"
require "./database-updater"
require "./models/*"

private macro define_model_getters(hash)
  {% for name, klass in hash %}
    def {{ name.id }} : {{ klass.id }}
      (@cache[{{ name }}] ||= {{ klass.id }}.new(self)) as {{ klass.id }}
    end
  {% end %}
end

module Guff
  class Models
    getter :config
    getter :db

    def initialize(@config : Config)
      # build model cache
      @cache = {} of Symbol => Model

      # path to db
      path = "%s/site.db" % [config["data"]]

      # update database (if necessary)
      DatabaseUpdater.run(path, @config)

      # open db
      @db = Database.new(path)
    end

    define_model_getters({
      post:     PostModel,
      tag:      TagModel,
      site:     SiteModel,
      session:  SessionModel,
    })
  end
end