require "html"
require "ecr/macros"
require "./page-html-view"
require "./api-methods"

module Guff
  class APIDocsHTMLView
    TITLE = "Guff API Documentation"

    def self.run(context : HTTP::Server::Context)
      page = PageHTMLView.new(TITLE, new.to_s)
      context.response.content_type = page.content_type
      context.response.puts page
    end

    private def namespaces
      APIMethods::API.keys.sort
    end

    private def methods(
      namespace : String
    )
      APIMethods::API[namespace].keys.sort
    end

    private def method_text(
      namespace : String,
      method    : String
    )
      APIMethods::API[namespace][method][:text] as String
    end

    private def method_args(
      namespace : String,
      method    : String
    )
      if method_has_args?(namespace, method)
        args = APIMethods::API[namespace][method][:args] as \
          Hash(String, Hash(Symbol, String|Symbol|Bool)) | Nil
        args.keys.sort
      else
        [] of String
      end
    end

    private def arg_text(
      namespace : String,
      method    : String,
      name      : String
    ) : String
      if method_has_args?(namespace, method)
        arg = APIMethods::API[namespace][method][:args][name] as\
          Hash(Symbol, String|Symbol|Bool)
        arg[:text] as String
      else
        ""
      end
    end

    private def method_has_args?(
      namespace : String,
      method    : String
    )
      APIMethods::API[namespace][method].has_key?(:args)
    end

    def h(s : String)
      HTML.escape(s || "")
    end

    ECR.def_to_s("./src/guff/views/api-docs.ecr")
  end
end