Class: CoreLibrary::ApiHelper

Inherits:
Object
  • Object
show all
Defined in:
lib/apimatic-core/utilities/api_helper.rb

Overview

API utility class involved in executing an API

Class Method Summary collapse

Class Method Details

.append_url_with_query_parameters(query_builder, parameters, array_serialization = ArraySerializationFormat::INDEXED) ⇒ Object

Appends the given set of parameters to the given query string.

Parameters:

  • query_builder (String) —

    The query string builder to add the query parameters to.

  • parameters (Hash) —

    The parameters to append.

  • array_serialization (String) (defaults to: ArraySerializationFormat::INDEXED) —

    The serialization format



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 171

def self.append_url_with_query_parameters(query_builder, parameters,
                                          array_serialization = ArraySerializationFormat::INDEXED)
  # Perform parameter validation.
  unless query_builder.instance_of? String
    raise ArgumentError, 'Given value for parameter \"query_builder\"
      is invalid.'
  end

  # Return if there are no parameters to replace.
  return query_builder if parameters.nil?

  parameters = process_complex_types_parameters(parameters, array_serialization)

  parameters.each do |key, value|
    seperator = query_builder.include?('?') ? '&' : '?'
    unless value.nil?
      if value.instance_of? Array
        value.compact!
        serialize_array(
          key, value, formatting: array_serialization
        ).each do |element|
          seperator = query_builder.include?('?') ? '&' : '?'
          query_builder += "#{seperator}#{element[0]}=#{element[1]}"
        end
      else
        query_builder += "#{seperator}#{key}=#{CGI.escape(value.to_s)}"
      end
    end
  end
  query_builder
end

.append_url_with_template_parameters(query_builder, parameters) ⇒ Object

Replaces template parameters in the given url. parameters.

Parameters:

  • query_builder (String) —

    The query string builder to replace the template

  • parameters (Hash) —

    The parameters to replace in the url.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 95

def self.append_url_with_template_parameters(query_builder, parameters)
  # perform parameter validation
  unless query_builder.instance_of? String
    raise ArgumentError, 'Given value for parameter \"query_builder\" is
      invalid.'
  end

  # Return if there are no parameters to replace.
  return query_builder if parameters.nil?

  parameters.each do |key, val|
    if val.nil?
      replace_value = ''
    elsif val['value'].instance_of? Array
      if val['encode'] == true
        val['value'].map! { |element| CGI.escape(element.to_s) }
      else
        val['value'].map!(&:to_s)
      end
      replace_value = val['value'].join('/')
    else
      replace_value = if val['encode'] == true
                        CGI.escape(val['value'].to_s)
                      else
                        val['value'].to_s
                      end
    end

    # Find the template parameter and replace it with its value.
    query_builder = query_builder.gsub("{#{key}}", replace_value)
  end
  query_builder
end

.clean_hash(hash) ⇒ Object

Removes elements with empty values from a hash.

Parameters:

  • hash (Hash) —

    The hash to clean.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 253

def self.clean_hash(hash)
  hash.delete_if { |_key, value| value.to_s.strip.empty? }
end

.clean_url(url) ⇒ String

Validates and processes the given Url.

Parameters:

  • url (String) —

    The given Url to process.

Returns:

  • (String) —

    Pre-processed Url as string.

Raises:

  • (ArgumentError) 


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# File 'lib/apimatic-core/utilities/api_helper.rb', line 206

def self.clean_url(url)
  # Perform parameter validation.
  raise ArgumentError, 'Invalid Url.' unless url.instance_of? String

  # Ensure that the urls are absolute.
  matches = url.match(%r{^(https?://[^/]+)})
  raise ArgumentError, 'Invalid Url format.' if matches.nil?

  # Get the http protocol match.
  protocol = matches[1]

  # Check if parameters exist.
  index = url.index('?')

  # Remove redundant forward slashes.
  query = url[protocol.length...(!index.nil? ? index : url.length)]
  query.gsub!(%r{//+}, '/')

  # Get the parameters.
  parameters = !index.nil? ? url[url.index('?')...url.length] : ''

  # Return processed url.
  protocol + query + parameters
end

.custom_merge(a, b) ⇒ Object 



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 281

def self.custom_merge(a, b)
  x = {}
  a.each do |key, value_a|
    b.each do |k, value_b|
      next unless key == k

      x[k] = []
      if value_a.instance_of? Array
        value_a.each do |v|
          x[k].push(v)
        end
      else
        x[k].push(value_a)
      end
      if value_b.instance_of? Array
        value_b.each do |v|
          x[k].push(v)
        end
      else
        x[k].push(value_b)
      end
      a.delete(k)
      b.delete(k)
    end
  end
  x.merge!(a)
  x.merge!(b)
  x
end

.custom_type_deserializer(response, deserialize_into, is_array, should_symbolize) ⇒ Object

Deserializes response to a known custom model type.

Parameters:

  • response —

    The response received.

  • deserialize_into —

    The custom model type to deserialize into.

  • is_array —

    Is the response provided an array or not



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 84

def self.custom_type_deserializer(response, deserialize_into, is_array, should_symbolize)
  decoded = json_deserialize(response, should_symbolize)
  return deserialize_into.call(decoded) unless is_array

  decoded.map { |element| deserialize_into.call(element) }
end

.data_types ⇒ Object

Array of supported data types



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 551

def self.data_types
  [String, Float, Integer,
   TrueClass, FalseClass, Date,
   DateTime, Array, Hash, Object]
end

.date_deserializer(response, is_array, should_symbolize) ⇒ Object

Deserializes date.

Parameters:

  • response —

    The response received.

  • is_array —

    Is the response provided an array or not



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 64

def self.date_deserializer(response, is_array, should_symbolize)
  if is_array
    decoded = json_deserialize(response, should_symbolize)
    return decoded.map { |element| Date.iso8601(element) }
  end
  Date.iso8601(response)
end

.deserialize(template, value, sdk_module, should_symbolize) ⇒ Object

Deserialize the value against the template (group of types).

Parameters:

  • value (String) —

    The value to be deserialized.

  • template (String) —

    The type-combination group for which the value will be mapped (oneOf(Integer, String)).



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 389

def self.deserialize(template, value, sdk_module, should_symbolize)
  decoded = json_deserialize(value, should_symbolize)
  map_types(decoded, template, sdk_module: sdk_module)
end

.deserialize_datetime(response, datetime_format, is_array, should_symbolize) ⇒ Object

Deserializes datetime.

Parameters:

  • response —

    The response received.

  • datetime_format —

    Current format of datetime.

  • is_array —

    Is the response provided an array or not



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 42

def self.deserialize_datetime(response, datetime_format, is_array, should_symbolize)
  decoded = json_deserialize(response, should_symbolize) if is_array

  case datetime_format
  when DateTimeFormat::HTTP_DATE_TIME
    return DateTimeHelper.from_rfc1123(response) unless is_array

    decoded.map { |element| DateTimeHelper.from_rfc1123(element) }
  when DateTimeFormat::RFC3339_DATE_TIME
    return DateTimeHelper.from_rfc3339(response) unless is_array

    decoded.map { |element| DateTimeHelper.from_rfc3339(element) }
  when DateTimeFormat::UNIX_DATE_TIME
    return DateTimeHelper.from_unix(response) unless is_array

    decoded.map { |element| DateTimeHelper.from_unix(element) }
  end
end

.deserialize_primitive_types(response, type, is_array, should_symbolize) ⇒ Object

Deserializes primitive types like Boolean, String etc.

Parameters:

  • response —

    The response received.

  • type —

    Type to be deserialized.

  • is_array —

    Is the response provided an array or not

Raises:

  • (ArgumentError) 


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# File 'lib/apimatic-core/utilities/api_helper.rb', line 31

def self.deserialize_primitive_types(response, type, is_array, should_symbolize)
  return json_deserialize(response, should_symbolize) if is_array
  raise ArgumentError, 'callable has not been not provided for deserializer.' if type.nil?

  type.call(response)
end

.dynamic_deserializer(response, should_symbolize) ⇒ Object

Deserializer to use when the type of response is not known beforehand.

Parameters:

  • response —

    The response received.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 74

def self.dynamic_deserializer(response, should_symbolize)
  decoded = json_deserialize(response, should_symbolize) unless response.nil? ||
                                                                response.to_s.strip.empty?
  decoded
end

.form_encode(obj, instance_name, formatting: ArraySerializationFormat::INDEXED) ⇒ Hash

Form encodes an object. of a hash.

Parameters:

  • obj (Dynamic) —

    An object to form encode.

  • instance_name (String) —

    The name of the object.

Returns:

  • (Hash) —

    A form encoded representation of the object in the form



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 316

def self.form_encode(obj, instance_name, formatting: ArraySerializationFormat::INDEXED)
  retval = {}

  # If this is a structure, resolve it's field names.
  obj = obj.to_hash if obj.is_a? BaseModel

  # Create a form encoded hash for this object.
  if obj.nil?
    nil
  elsif obj.instance_of? Array
    if formatting == ArraySerializationFormat::INDEXED
      obj.each_with_index do |value, index|
        retval.merge!(form_encode(value, "#{instance_name}[#{index}]"))
      end
    elsif serializable_types.map { |x| obj[0].is_a? x }.any?
      obj.each do |value|
        abc = if formatting == ArraySerializationFormat::UN_INDEXED
                form_encode(value, "#{instance_name}[]",
                            formatting: formatting)
              else
                form_encode(value, instance_name,
                            formatting: formatting)
              end
        retval = custom_merge(retval, abc)
      end
    else
      obj.each_with_index do |value, index|
        retval.merge!(form_encode(value, "#{instance_name}[#{index}]",
                                  formatting: formatting))
      end
    end
  elsif obj.instance_of? Hash
    obj.each do |key, value|
      retval.merge!(form_encode(value, "#{instance_name}[#{key}]",
                                formatting: formatting))
    end
  elsif obj.instance_of? File
    retval[instance_name] = UploadIO.new(
      obj, 'application/octet-stream', File.basename(obj.path)
    )
  else
    retval[instance_name] = obj
  end
  retval
end

.form_encode_parameters(form_parameters, array_serialization) ⇒ Hash

Form encodes a hash of parameters.

Parameters:

  • form_parameters (Hash) —

    The hash of parameters to encode.

Returns:

  • (Hash) —

    A hash with the same parameters form encoded.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 260

def self.form_encode_parameters(form_parameters, array_serialization)
  encoded = {}
  form_parameters.each do |key, value|
    encoded.merge!(form_encode(value, key, formatting:
      array_serialization))
  end
  encoded
end

.get_content_type(value) ⇒ Object

Get content-type depending on the value

Parameters:

  • value (Object) —

    The value for which the content-type is resolved.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 536

def self.get_content_type(value)
  if serializable_types.map { |x| value.is_a? x }.any?
    'text/plain; charset=utf-8'
  else
    'application/json; charset=utf-8'
  end
end

.json_deserialize(json, should_symbolize = false) ⇒ Object

Parses JSON string. rubocop:disable Style/OptionalBooleanParameter

Parameters:

  • json (String) —

    A JSON string.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 234

def self.json_deserialize(json, should_symbolize = false)
  return if json.nil?

  begin
    JSON.parse(json, symbolize_names: should_symbolize)
  rescue StandardError
    raise TypeError, 'Server responded with invalid JSON.'
  end
end

.json_serialize(obj) ⇒ Object

Parses JSON string.

Parameters:

  • obj (object) —

    The object to serialize.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 247

def self.json_serialize(obj)
  serializable_types.map { |x| obj.is_a? x }.any? ? obj.to_s : obj.to_json
end

.map_array_type(value, type, group_name, matches) ⇒ Object

Validates and processes the value against the [Array] type.

Parameters:

  • value (String) —

    The value to be mapped against the type.

  • type (String) —

    The possible type of the value.

  • group_name (String) —

    The parameter indicates the group (oneOf|anyOf).

  • matches (Integer) —

    The parameter indicates the number of matches of value against types.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 468

def self.map_array_type(value, type, group_name, matches)
  if value.instance_of? Array
    decoded = []
    value.each do |val|
      type = type.chomp('[]').to_s
      val = map_types(val, type, group_name: group_name)
      decoded.append(val) unless type.empty?
    rescue ValidationException
      next
    end
    matches += 1 if decoded.length == value.length
    value = decoded unless decoded.empty?
  end
  [value, matches]
end

.map_complex_type(value, type, matches, sdk_module) ⇒ Object

Validates and processes the value against the complex types.

Parameters:

  • value (String) —

    The value to be mapped against the type.

  • type (String) —

    The possible type of the value.

  • matches (Integer) —

    The parameter indicates the number of matches of value against types.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 504

def self.map_complex_type(value, type, matches, sdk_module)
  # TODO: Add a nil check on sdk_module?
  obj = sdk_module.const_get(type)
  value = if obj.respond_to? 'from_hash'
            obj.send('from_hash', value)
          else
            obj.constants.find { |k| obj.const_get(k) == value }
          end
  matches += 1 unless value.nil?
  [value, matches]
end

.map_data_type(value, element, matches) ⇒ Object

Validates and processes the value against the data types.

Parameters:

  • value (String) —

    The value to be mapped against the type.

  • element (String) —

    The possible type of the value.

  • matches (Integer) —

    The parameter indicates the number of matches of value against types.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 520

def self.map_data_type(value, element, matches)
  element = element.split('|').map { |x| Object.const_get x }
  matches += 1 if element.all? { |x| data_types.include?(x) } &&
                  element.any? { |x| (value.instance_of? x) || (value.class.ancestors.include? x) }
  [value, matches]
end

.map_hash_type(value, type, group_name, matches) ⇒ Object

Validates and processes the value against the [Hash] type.

Parameters:

  • value (String) —

    The value to be mapped against the type.

  • type (String) —

    The possible type of the value.

  • group_name (String) —

    The parameter indicates the group (oneOf|anyOf).

  • matches (Integer) —

    The parameter indicates the number of matches of value against types.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 447

def self.map_hash_type(value, type, group_name, matches)
  if value.instance_of? Hash
    decoded = {}
    value.each do |key, val|
      type = type.chomp('{}').to_s
      val = map_types(val, type, group_name: group_name)
      decoded[key] = val unless type.empty?
    rescue ValidationException
      next
    end
    matches += 1 if decoded.length == value.length
    value = decoded unless decoded.empty?
  end
  [value, matches]
end

.map_response(obj, keys) ⇒ Object

Retrieves a field from a Hash/Array based on an Array of keys/indexes

Parameters:

  • obj (Hash, Array) —

    The hash to extract data from

  • keys (Array<String, Integer>) —

    The keys/indexes to use

Returns:

  • (Object) —

    The extracted value



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 366

def self.map_response(obj, keys)
  val = obj
  begin
    keys.each do |key|
      val = if val.is_a? Array
              if key.to_i.to_s == key
                val[key.to_i]
              else
                val = nil
              end
            else
              val.fetch(key.to_sym)
            end
    end
  rescue NoMethodError, TypeError, IndexError
    val = nil
  end
  val
end

.map_type(value, type, _group_name, matches, sdk_module) ⇒ Object

Validates and processes the value against the type.

Parameters:

  • value (String) —

    The value to be mapped against the type.

  • type (String) —

    The possible type of the value.

  • _group_name (String) —

    The parameter indicates the group (oneOf|anyOf).

  • matches (Integer) —

    The parameter indicates the number of matches of value against types.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 489

def self.map_type(value, type, _group_name, matches, sdk_module)
  if sdk_module.constants.select do |c|
    sdk_module.const_get(c).to_s == "#{sdk_module}::#{type}"
  end.empty?
    value, matches = map_data_type(value, type, matches)
  else
    value, matches = map_complex_type(value, type, matches, sdk_module)
  end
  [value, matches]
end

.map_types(value, template, group_name: nil, sdk_module: nil) ⇒ Object

Validates and processes the value against the template(group of types).

Parameters:

  • value (String) —

    The value to be mapped against the template.

  • template (String) —

    The parameter indicates the group of types (oneOf(Integer, String)).

  • group_name (String) (defaults to: nil) —

    The parameter indicates the group (oneOf|anyOf).

Raises:



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 398

def self.map_types(value, template, group_name: nil, sdk_module: nil)
  result_value = nil
  matches = 0
  types = []
  group_name = template.partition('(').first if group_name.nil? && template.match?(/anyOf|oneOf/)

  return if value.nil?

  if template.end_with?('{}') || template.end_with?('[]')
    types = template.split(group_name, 2).last.gsub(/\s+/, '').split
  else
    template = template.split(group_name, 2).last.delete_prefix('(').delete_suffix(')')
    types = template.scan(/(anyOf|oneOf)[(]([^[)]]*)[)]/).flatten.combination(2).map { |a, b| "#{a}(#{b})" }
    types.each { |t| template = template.gsub(", #{t}", '') }
    types = template.gsub(/\s+/, '').split(',').push(*types)
  end
  types.each do |element|
    if element.match?(/^(oneOf|anyOf)[(].*$/)
      begin
        result_value = map_types(value, element, matches)
        matches += 1
      rescue ValidationException
        next
      end
    elsif element.end_with?('{}')
      result_value, matches = map_hash_type(value, element, group_name, matches)
    elsif element.end_with?('[]')
      result_value, matches = map_array_type(value, element, group_name, matches)
    else
      begin
        result_value, matches = map_type(value, element, group_name, matches, sdk_module)
      rescue StandardError
        next
      end
    end
    break if group_name == 'anyOf' && matches == 1
  end
  raise ValidationException, "The value #{value} provided doesn't validate against the schema #{template}" unless
    matches == 1

  value = result_value unless result_value.nil?
  value
end

.process_complex_types_parameters(query_parameters, array_serialization) ⇒ Hash

Process complex types in query_params.

Parameters:

  • query_parameters (Hash) —

    The hash of query parameters.

Returns:

  • (Hash) —

    array_serialization A hash with the processed query parameters.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 272

def self.process_complex_types_parameters(query_parameters, array_serialization)
  processed_params = {}
  query_parameters.each do |key, value|
    processed_params.merge!(ApiHelper.form_encode(value, key, formatting:
      array_serialization))
  end
  processed_params
end

.resolve_template_placeholders(placeholders, values, template) ⇒ Object

Updates all placeholders in the given message template with provided value. @@return [String] The resolved template value.

Parameters:

  • placeholders (List) —

    The placeholders that need to be searched and replaced in the given template value.

  • values (Hash|String) —

    The value which refers to the actual values to replace with.

  • template (String) —

    The template string containing placeholders.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 584

def self.resolve_template_placeholders(placeholders, values, template)
  values = values.map { |key, value| [key.to_s, value.to_s] }.to_h if values.is_a? Hash

  placeholders.each do |placeholder|
    extracted_value = ''
    if values.is_a? Hash
      # pick the last chunk then strip the last character (i.e. `}`) of the string value
      key = if placeholder.include? '.'
              placeholder.split('.')[-1].delete_suffix('}')
            else
              placeholder.delete_prefix('{').delete_suffix('}')
            end
      extracted_value = values[key] unless values[key].nil?
    else
      extracted_value = values unless values.nil?
    end
    template.gsub!(placeholder, extracted_value.to_s)
  end

  template
end

.resolve_template_placeholders_using_json_pointer(placeholders, value, template) ⇒ Object

Updates all placeholders in the given message template with provided value. @@return [String] The resolved template value.

Parameters:

  • placeholders (String) —

    The placeholders that need to be searched and replaced in the given template value.

  • value (String) —

    The dictionary containing the actual values to replace with.

  • template (String) —

    The template string containing placeholders.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 562

def self.resolve_template_placeholders_using_json_pointer(placeholders, value, template)
  placeholders.each do |placeholder|
    extracted_value = ''
    if placeholder.include? '#'
      # pick the 2nd chunk then remove the last character (i.e. `}`) of the string value
      node_pointer = placeholder.split('#')[1].delete_suffix('}')
      value_pointer = JsonPointer.new(value, node_pointer, symbolize_keys: true)
      extracted_value = json_serialize(value_pointer.value) if value_pointer.exists?
    elsif !value.nil?
      extracted_value = json_serialize(value)
    end
    template.gsub!(placeholder, extracted_value)
  end

  template
end

.serializable_types ⇒ Object

Array of serializable types



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 545

def self.serializable_types
  [String, Numeric, TrueClass,
   FalseClass, Date, DateTime]
end

.serialize_array(key, array, formatting: 'indexed') ⇒ Object

Serializes an array parameter (creates key value pairs).

Parameters:

  • key (String) —

    The name of the parameter.

  • array (Array) —

    The value of the parameter.

  • formatting (String) (defaults to: 'indexed') —

    The format of the serialization.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 11

def self.serialize_array(key, array, formatting: 'indexed')
  tuples = []

  tuples += case formatting
            when 'csv'
              [[key, array.map { |element| CGI.escape(element.to_s) }.join(',')]]
            when 'psv'
              [[key, array.map { |element| CGI.escape(element.to_s) }.join('|')]]
            when 'tsv'
              [[key, array.map { |element| CGI.escape(element.to_s) }.join("\t")]]
            else
              array.map { |element| [key, element] }
            end
  tuples
end

.update_user_agent_value_with_parameters(user_agent, parameters) ⇒ Object

Replaces the template parameters in the given user-agent string. parameters.

Parameters:

  • user_agent (String) —

    The user_agent value to be replaced with the given

  • parameters (Hash) —

    The parameters to replace in the user_agent.



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 133

def self.update_user_agent_value_with_parameters(user_agent, parameters)
  # perform parameter validation
  unless user_agent.instance_of? String
    raise ArgumentError, 'Given value for \"user_agent\" is
      invalid.'
  end

  # Return if there are no parameters to replace.
  return user_agent if parameters.nil?

  parameters.each do |key, val|
    if val.nil?
      replace_value = ''
    elsif val['value'].instance_of? Array
      if val['encode'] == true
        val['value'].map! { |element| ERB::Util.url_encode(element.to_s) }
      else
        val['value'].map!(&:to_s)
      end
      replace_value = val['value'].join('/')
    else
      replace_value = if val['encode'] == true
                        ERB::Util.url_encode(val['value'].to_s)
                      else
                        val['value'].to_s
                      end
    end

    # Find the template parameter and replace it with its value.
    user_agent = user_agent.gsub(key.to_s, replace_value)
  end
  user_agent
end

.validate_types(value, template, sdk_module, should_symbolize) ⇒ Object

Validates the value against the template(group of types).

Parameters:

  • value (String) —

    The value to be mapped against the type.

  • template (String) —

    The parameter indicates the group of types (oneOf(Integer, String)).



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# File 'lib/apimatic-core/utilities/api_helper.rb', line 530

def self.validate_types(value, template, sdk_module, should_symbolize)
  map_types(json_deserialize(value.to_json, should_symbolize), template, sdk_module: sdk_module)
end