require "http/server"
require "./config"
require "./model"
require "./blog-handler"

module Guff
  module Handlers
    HANDLERS = [{
      # TODO: add production error handler
      env:  %w{development},
      init: ->(model : Model) {
        HTTP::ErrorHandler.new as HTTP::Handler
      },
    }, {
      init: ->(model : Model) {
        HTTP::LogHandler.new as HTTP::Handler
      },
    }, {
      init: ->(model : Model) {
        HTTP::DeflateHandler.new as HTTP::Handler
      },
    }, {
      env:  %w{development},
      init: ->(model : Model) {
        TestHandler.new(model) as HTTP::Handler
      },
    }, {
      init: ->(model : Model) {
        APIHandler.new(model) as HTTP::Handler
      },
    }, {
      init: ->(model : Model) {
        BlogHandler.new(model) as HTTP::Handler
      },
    }, {
      init: ->(model : Model) {
        SlugHandler.new(model) as HTTP::Handler
      },
    }, {
      init: ->(model : Model) {
        HTTP::StaticFileHandler.new(model.config["public"]) as HTTP::Handler
      },
    }, {
      init: ->(model : Model) {
        NotFoundHandler.new(model) as HTTP::Handler
      },
    }]

    def self.get(model : Model) : Array(HTTP::Handler)
      HANDLERS.select { |h|
        if h.has_key?(:env)
          (h[:env] as Array(String)).includes?(model.config["environment"])
        else
          true
        end
      }.map { |h|
        init = (h[:init] as Proc(Model, HTTP::Handler))
        init.call(model)
      }
    end
  end
end