module Dyndnsd
  type config = Hash[String, untyped]
  type env = Hash[String, String]
  type headers = Hash[String, String]
  type response = Array[int | Hash[string, string] | Array[string]]

  interface _App
    def call: (env env) -> response
  end


  # @return [Logger]
  def self.logger: () -> untyped

  # @param logger [Logger]
  # @return [Logger]
  def self.logger=: (untyped logger) -> untyped

  class LogFormatter
    # @param lvl [Object]
    # @param _time [DateTime]
    # @param _progname [String]
    # @param msg [Object]
    # @return [String]
    def call: (untyped lvl, DateTime _time, String _progname, untyped msg) -> String
  end

  class Daemon
    # @param config [Hash{String => Object}]
    # @param db [Dyndnsd::Database]
    # @param updater [#update]
    def initialize: (untyped config, untyped db, untyped updater) -> void

    # @param username [String]
    # @param password [String]
    # @return [Boolean]
    def authorized?: (String username, String password) -> bool

    def call: (env env) -> response

    def self.run!: () -> void

    private

    # @param params [Hash{String => String}]
    # @return [Array<String>]
    def extract_v4_and_v6_address: (untyped params) -> (::Array[untyped] | untyped)

    # @param env [Hash{String => String}]
    # @param params [Hash{String => String}]
    # @return [Array<String>]
    def extract_myips: (untyped env, untyped params) -> (untyped | ::Array[untyped])

    # @param hostnames [String]
    # @param myips [Array<String>]
    # @return [Array<Symbol>]
    def process_changes: (untyped hostnames, untyped myips) -> untyped

    def update_db: () -> void

    def handle_dyndns_request: (env env) -> response

    def self.setup_logger: (config config) -> void
    def self.setup_traps: () -> void
    def self.setup_monitoring: (config config) -> void
    def self.setup_tracing: (config config) -> void
    def self.setup_rack: (config config) -> void
  end
end