Class: MessageMediaLookups::APIHelper

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

Overview

API utility class

Class Method Summary collapse

Class Method Details

.append_url_with_query_parameters(query_builder, parameters, array_serialization: 'indexed') ⇒ Object

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

Parameters:

  • The (String) —

    query string builder to add the query parameters to.

  • The (Hash) —

    parameters to append.

  • The (String) —

    format of array parameter serialization.



63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
 
# File 'lib/message_media_lookups/api_helper.rb', line 63

def self.append_url_with_query_parameters(query_builder, parameters,
                                          array_serialization: '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.each do |key, value|
    seperator = query_builder.include?('?') ? '&' : '?'
    unless value.nil?
      if value.instance_of? Array
        value.compact!
        query_builder += if array_serialization == 'csv'
                           "#{seperator}#{key}=#{value.map do |element|
                             CGI.escape(element.to_s)
                           end.join(',')}"
                         elsif array_serialization == 'psv'
                           "#{seperator}#{key}=#{value.map do |element|
                             CGI.escape(element.to_s)
                           end.join('|')}"
                         elsif array_serialization == 'tsv'
                           "#{seperator}#{key}=#{value.map do |element|
                             CGI.escape(element.to_s)
                           end.join("\t")}"
                         else
                           "#{seperator}#{APIHelper.serialize_array(
                             key, value, formatting: array_serialization
                           ).map { |k, v| "#{k}=#{CGI.escape(v.to_s)}" }
                           .join('&')}"
                         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:

  • The (String) —

    query string builder to replace the template

  • The (Hash) —

    parameters to replace in the url.



30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
 
# File 'lib/message_media_lookups/api_helper.rb', line 30

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?

  # Iterate and append parameters.
  parameters.each do |key, value|
    replace_value = ''

    if value.nil?
      replace_value = ''
    elsif value.instance_of? Array
      value.map! { |element| CGI.escape(element.to_s) }
      replace_value = value.join('/')
    else
      replace_value = CGI.escape(value.to_s)
    end

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

.clean_hash(hash) ⇒ Object

Removes elements with empty values from a hash.

Parameters:

  • The (Hash) —

    hash to clean.



143
144
145
 
# File 'lib/message_media_lookups/api_helper.rb', line 143

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:

  • The (String) —

    given Url to process.

Returns:

  • (String) —

    Pre-processed Url as string.

Raises:

  • (ArgumentError) 


108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
 
# File 'lib/message_media_lookups/api_helper.rb', line 108

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 



159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
 
# File 'lib/message_media_lookups/api_helper.rb', line 159

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

.form_encode(obj, instance_name, formatting: 'indexed') ⇒ Hash

Form encodes an object. of a hash.

Parameters:

  • An (Dynamic) —

    object to form encode.

  • The (String) —

    name of the object.

Returns:

  • (Hash) —

    A form encoded representation of the object in the form



193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
 
# File 'lib/message_media_lookups/api_helper.rb', line 193

def self.form_encode(obj, instance_name, formatting: 'indexed')
  retval = {}

  serializable_types = [String, Numeric, TrueClass,
                        FalseClass, Date, DateTime]

  # 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 == 'indexed'
      obj.each_with_index do |value, index|
        retval.merge!(APIHelper.form_encode(value, instance_name + '[' +
          index.to_s + ']'))
      end
    elsif serializable_types.map { |x| obj[0].is_a? x }.any?
      obj.each do |value|
        abc = if formatting == 'unindexed'
                APIHelper.form_encode(value, instance_name + '[]',
                                      formatting: formatting)
              else
                APIHelper.form_encode(value, instance_name,
                                      formatting: formatting)
              end
        retval = APIHelper.custom_merge(retval, abc)
        # print retval
      end
    else
      obj.each_with_index do |value, index|
        retval.merge!(APIHelper.form_encode(value, instance_name + '[' +
          index.to_s + ']', formatting: formatting))
      end
    end
  elsif obj.instance_of? Hash
    obj.each do |key, value|
      retval.merge!(APIHelper.form_encode(value, instance_name + '[' +
        key + ']', formatting: formatting))
    end
  else
    retval[instance_name] = obj
  end
  retval
end

.form_encode_parameters(form_parameters) ⇒ Hash

Form encodes a hash of parameters.

Parameters:

  • The (Hash) —

    hash of parameters to encode.

Returns:

  • (Hash) —

    A hash with the same parameters form encoded.



150
151
152
153
154
155
156
157
 
# File 'lib/message_media_lookups/api_helper.rb', line 150

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

.json_deserialize(json) ⇒ Object

Parses JSON string.

Parameters:



135
136
137
138
139
 
# File 'lib/message_media_lookups/api_helper.rb', line 135

def self.json_deserialize(json)
  return JSON.parse(json)
rescue StandardError
  raise TypeError, 'Server responded with invalid JSON.'
end

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

Serializes an array parameter (creates key value pairs).

Parameters:

  • The (String) —

    name of the parameter.

  • The (Array) —

    value of the parameter.

  • The (String) —

    format of the serialization.



9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
# File 'lib/message_media_lookups/api_helper.rb', line 9

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

  if formatting == 'unindexed'
    tuples += array.map { |element| ["#{key}[]", element] }
  elsif formatting == 'indexed'
    tuples += array.map.with_index do |element, index|
      ["#{key}[#{index}]", element]
    end
  elsif formatting == 'plain'
    tuples += array.map { |element| [key, element] }
  else
    raise ArgumentError, 'Invalid format provided.'
  end
  tuples
end