Module: SimpleService::ClassMethods

Defined in:
lib/simple_service.rb

Instance Method Summary collapse

Instance Method Details

#call(kwargs = {}) ⇒ Object 



32
33
34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/simple_service.rb', line 32

def call(kwargs={})
  service = self.new

  # if kwargs is a result obj then pull its hash out via #value
  service.result.value = kwargs.is_a?(Result) ? kwargs.value : kwargs

  get_commands(service).each do |cmnd|
    service = execute_command(cmnd, service)
    break if service.result.failure?
  end

  service.result
end

#command(command_name) ⇒ Object 



22
23
24
25
 
# File 'lib/simple_service.rb', line 22

def command(command_name)
  @commands ||= []
  @commands << command_name
end

#commands(*args) ⇒ Object 



27
28
29
30
 
# File 'lib/simple_service.rb', line 27

def commands(*args)
  @commands ||= []
  @commands += args
end

#execute_command(cmnd, service) ⇒ Object 



57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
 
# File 'lib/simple_service.rb', line 57

def execute_command(cmnd, service)
  service.current_command = cmnd

  command_output = if cmnd.is_a?(Class)
    cmnd.call(service.result.value)
  elsif cmnd.is_a?(Symbol)
    if service.method(cmnd).arity.zero?
      service.public_send(cmnd)
    else
      service.public_send(cmnd, service.result.value)
    end
  end

  if command_output.is_a?(Result)
    service.result.append_result(command_output)
  end

  service
end

#get_commands(service) ⇒ Object 



46
47
48
49
50
51
52
53
54
55
 
# File 'lib/simple_service.rb', line 46

def get_commands(service)
  if !@commands.nil? && @commands.any?
    @commands
  elsif service.respond_to?(:call)
    [:call]
  else
    raise "No commands defined for #{self.to_s}, define at least one " \
      'command or implement the #call method'
  end
end