module Hayrick

# File lib/hayrick.rb, line 6
def self.included(base)
  base.send(:extend, ClassMethods)
end

# File lib/hayrick.rb, line 14
def base_scope
  fail(NotImplementedError)
end

# File lib/hayrick.rb, line 10
def search(params, seed = base_scope)
  params.reduce(seed, &apply_filter)
end

# File lib/hayrick.rb, line 20
def apply_filter
  lambda do |accumulated_search, (keyword, term)|
    lookup_filter(keyword).call(accumulated_search, term)
  end
end

# File lib/hayrick.rb, line 26
def lookup_filter(name)
  self.class.search_filters[name]
end