Class: APIQL

Inherits:
Object
  • Object
show all
Defined in:
lib/apiql.rb

Defined Under Namespace

Modules: Rails Classes: CacheMissed, Context, Entity, Error, HashEntity

Constant Summary collapse

@@cache = 
{}

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(binder, *fields) ⇒ APIQL

Returns a new instance of APIQL.



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# File 'lib/apiql.rb', line 53

def initialize(binder, *fields)
  @context = ::APIQL::Context.new(binder, *fields)
  @context.inject_delegators(self)
end

Class Method Details

.cache(params) ⇒ Object 



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# File 'lib/apiql.rb', line 16

def cache(params)
  request_id = params[:apiql]
  request = params[:apiql_request]

  if request.present?
    redis&.set("api-ql-cache-#{request_id}", request)
    @@cache = {} if @@cache.count > 1000
    @@cache[request_id] = request
  else
    request = @@cache[request_id]
    request ||= redis&.get("api-ql-cache-#{request_id}")
    raise CacheMissed unless request.present?
  end

  request
end

.simple_class?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/apiql.rb', line 33

def simple_class?(value)
  value.nil? ||
    value.is_a?(TrueClass) || value.is_a?(FalseClass) ||
    value.is_a?(Symbol) || value.is_a?(String) ||
    value.is_a?(Integer) || value.is_a?(Float) || value.is_a?(BigDecimal) ||
    value.is_a?(Hash)
end

Instance Method Details

#render(schema) ⇒ Object 



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# File 'lib/apiql.rb', line 58

def render(schema)
  result = {}

  function = nil
  data = nil

  pool = nil
  keys = nil
  last_key = nil

  while schema.present? do
    if reg = schema.match(/\A\s*\{(?<rest>.*)\z/m) # {
      schema = reg[:rest]

      pool.push [keys, last_key]
      keys = []
    elsif reg = schema.match(/\A\s*\}(?<rest>.*)\z/m) # }
      schema = reg[:rest]

      last_keys = keys

      keys, last_key = pool.pop

      if pool.empty?
        result[function] = @context.render_value(data, last_keys)
        function = nil
      else
        keys.delete(last_key)
        keys << { last_key => last_keys }
      end
    elsif function.present? && (reg = schema.match(/\A\s*(?<name>\w+)(\((?<params>.*)\))?(?<rest>.*)\z/m))
      schema = reg[:rest]

      if reg[:params].present?
        keys << [reg[:name], reg[:params]]
      else
        keys << reg[:name]
      end

      last_key = reg[:name]
    elsif reg = schema.match(/\A\s*(?<name>\w+)(\((?<params>((\w+)(\s*\,\s*\w+)*))?\))?\s*\{(?<rest>.*)\z/m)
      schema = reg[:rest]

      function = reg[:name]
      params = @context.parse_params(reg[:params])

      data = public_send(function, *params)

      pool = []
      requested = {}

      last_key = nil

      pool.push [keys, last_key]
      keys = []
    elsif reg = schema.match(/\A\s*(?<name>\w+)(\((?<params>((\w+)(\s*\,\s*\w+)*))?\))?\s*\n(?<rest>.*)\z/m)
      schema = reg[:rest]

      function = reg[:name]
      params = @context.parse_params(reg[:params])

      data = public_send(function, *params)
      if data.is_a? Array
        if data.any? { |item| !APIQL::simple_class?(item) }
          data = nil
        end
      elsif !APIQL::simple_class?(data)
        data = nil
      end

      result[function] = data

      function = nil
    else
      raise Error
    end
  end

  result
end