Deserialize json into proper classes. Better null handling for optional properties

src/modules/api/yelp.cr

@@ -1,9 +1,73 @@
 require "http/client"
 require "io"
+require "json"
 
 module Wince::Yelp
   extend self
 
+  class SearchResponse
+    include JSON::Serializable
+    property businesses : Array(Business)?
+    property error : Error?
+  end
+
+  class Error
+    include JSON::Serializable
+    property code : String
+    property description : String
+  end
+
+  class Business
+    include JSON::Serializable
+    property id : String
+    property name : String
+    property rating : Float32
+    property distance : Float32
+  end
+
+  class DetailsResponse
+    include JSON::Serializable
+    property error : Error?
+    property name : String
+    property price : String?
+    property display_phone : String?
+    property location : Location
+    property coordinates : Coordinates
+    property url : String
+    property hours : Array(Hours)
+
+    def is_open
+      hours[0].is_open_now
+    end
+  end
+
+  class Coordinates
+    include JSON::Serializable
+    property latitude : Float32
+    property longitude : Float32
+  end
+
+  class Location
+    include JSON::Serializable
+    property display_address : Array(String)
+  end
+
+  class Hours
+    include JSON::Serializable
+    property open : Array(Open)
+    property is_open_now : Bool
+  end
+
+  class Open
+    include JSON::Serializable
+    property is_overnight : Bool
+    @[JSON::Field(key: "start")]
+    property open : String
+    @[JSON::Field(key: "end")]
+    property close : String
+    property day : Int32
+  end
+
   @@token : String = {{ read_file("./api_key") }}
 
   def search_businesses(search : String, location : String)
@@ -21,6 +85,8 @@ module Wince::Yelp
     )
     headers = HTTP::Headers{ "Authorization" => "Bearer " + @@token }
     response = HTTP::Client.get(uri, headers)
+
+    {response.status_code, SearchResponse.from_json(response.body)}
   end
 
   def get_business_info(id : String)
@@ -32,6 +98,8 @@ module Wince::Yelp
     )
     headers = HTTP::Headers{ "Authorization" => "Bearer " + @@token }
     response = HTTP::Client.get(uri, headers)
+
+    {response.status_code, DetailsResponse.from_json(response.body)}
   end
 
 end