module Acter

# File lib/acter.rb, line 27
def handle_invalid_command(exn)
  puts exn
  puts
  help = Help.new(exn.schema)
  case exn
  when HelpWanted, MissingParameters
    puts help.help_for_action(exn.action, exn.subject)
  when InvalidAction
    puts help.help_for_subject(exn.subject)
  else
    puts help.general_help
  end
end

# File lib/acter.rb, line 10
def load_schema_data(path = nil)
  path ||= Pathname.glob("schema.{json,yml}").first or raise NoSchema
  if path.is_a?(String)
    uri = URI(path)
    source = uri.scheme ? uri : Pathname.new(path)
  elsif path.respond_to?(:read) && path.respond_to?(:to_s)
    source = path
  else
    raise ArgumentError, "Argument to load_schema must be a String or a Pathname-like object"
  end
  if source.to_s =~ /\.ya?ml$/
    YAML.load(source.read)
  else
    MultiJson.load(source.read)
  end
end

# File lib/acter.rb, line 54
def program_name
  @program_name ||= File.basename($0, ".rb")
end

# File lib/acter.rb, line 41
def run(args, schema_path = nil, render_options = nil)
  schema_data = load_schema_data(schema_path)
  action = Action.new(args, schema_data)
  result = action.send_request
  puts result.render(render_options)
  result.success?
rescue InvalidCommand => e
  handle_invalid_command(e)
rescue NoSchema
  raise unless args.empty? || args == %w"help"
  handle_invalid_command(InvalidCommand.new(nil))
end