module RorVsWild::Host

def self.cwd
  Dir.pwd
end

def self.load_config(config)
  @name = config.dig(:server, :name)
end

def self.name
  @name ||= if gae_instance = ENV["GAE_INSTANCE"] || ENV["CLOUD_RUN_EXECUTION"]
    gae_instance
  elsif dyno = ENV["DYNO"] # Heroku
    dyno.start_with?("run.") ? "run.*" :
      dyno.start_with?("release.") ? "release.*" : dyno
  else
    Socket.gethostname
  end
end

def self.os
  @os_description ||= `uname -sr`.strip
rescue Exception => ex
  @os_description = RbConfig::CONFIG["host_os"]
end

def self.pid
  Process.pid
end

def self.rails
  Rails.version if defined?(Rails)
end

def self.revision
  Deployment.revision
end

def self.revision_description
  Deployment.description
end

def self.ruby
  RUBY_DESCRIPTION
end

def self.to_h
  @to_h ||= {os: os, user: user, host: name, ruby: ruby, rails: rails, pid: pid, cwd: cwd, revision: revision}.compact
end

def self.user
  Etc.getlogin
end