class RedisClient::Multi

def _blocks
  @blocks
end

def _coerce!(results)
  results&.each_with_index do |result, index|
    if result.is_a?(CommandError)
      result._set_command(@commands[index + 1])
      raise result
    end
    if @blocks && block = @blocks[index + 1]
      results[index] = block.call(result)
    end
  end
  results
end

def _commands
  @commands
end

def _empty?
  @commands.size <= 2
end

def _retryable?
  @retryable
end

def _size
  @commands.size
end

def _timeouts
  nil
end

def call(*command, **kwargs, &block)
  command = @command_builder.generate(command, kwargs)
  (@blocks ||= [])[@commands.size] = block if block_given?
  @commands << command
  nil
end

def call_once(*command, **kwargs, &block)
  command = @command_builder.generate(command, kwargs)
  @retryable = false
  (@blocks ||= [])[@commands.size] = block if block_given?
  @commands << command
  nil
end

def call_once_v(command, &block)
  command = @command_builder.generate(command)
  @retryable = false
  (@blocks ||= [])[@commands.size] = block if block_given?
  @commands << command
  nil
end

def call_v(command, &block)
  command = @command_builder.generate(command)
  (@blocks ||= [])[@commands.size] = block if block_given?
  @commands << command
  nil
end

def initialize(command_builder)
  @command_builder = command_builder
  @size = 0
  @commands = []
  @blocks = nil
  @retryable = true
end