Use href from iframe media response

Turns out, href exists in the mediaResponse query. I can use that
instead of fetching that separately.

spec/classes/iframe_media_resolver_spec.cr

@@ -1,27 +0,0 @@
-require "../spec_helper"
-
-include Nodes
-
-describe IFrameMediaResolver do
-  around_each do |example|
-    original_client = IFrameMediaResolver.http_client
-    IFrameMediaResolver.http_client = FakeMediumClient
-    example.run
-    IFrameMediaResolver.http_client = original_client
-  end
-
-  it "returns a url of the embedded page" do
-    iframe = PostResponse::IFrame.from_json <<-JSON
-      {
-        "mediaResource": {
-          "id": "d4515fff7ecd02786e75fc8997c94bbf"
-        }
-      }
-    JSON
-    resolver = IFrameMediaResolver.new(iframe: iframe)
-
-    result = resolver.fetch_href
-
-    result.should eq("https://example.com")
-  end
-end

spec/classes/paragraph_converter_spec.cr

@@ -3,13 +3,6 @@ require "../spec_helper"
 include Nodes
 
 describe ParagraphConverter do
-  around_each do |example|
-    original_client = IFrameMediaResolver.http_client
-    IFrameMediaResolver.http_client = FakeMediumClient
-    example.run
-    IFrameMediaResolver.http_client = original_client
-  end
-
   it "converts a simple structure with no markups" do
     paragraphs = Array(PostResponse::Paragraph).from_json <<-JSON
       [
@@ -289,7 +282,7 @@ describe ParagraphConverter do
           "href": null,
           "iframe": {
             "mediaResource": {
-              "id": "7c6231d165bf9fc1853f259a7b55bd14"
+              "href": "https://example.com"
             }
           },
           "layout": null,

spec/support/fake_medium_client.cr

@@ -1,9 +0,0 @@
-class FakeMediumClient < MediumClient
-  def self.media_data(media_id : String) : MediaResponse::Root
-    MediaResponse::Root.from_json(
-      <<-JSON
-        {"payload": {"value": {"href": "https://example.com"}}}
-      JSON
-    )
-  end
-end

src/classes/iframe_media_resolver.cr

@@ -1,13 +0,0 @@
-class IFrameMediaResolver
-  class_property http_client : MediumClient.class = MediumClient
-
-  getter iframe
-
-  def initialize(@iframe : PostResponse::IFrame)
-  end
-
-  def fetch_href
-    response = @@http_client.media_data(iframe.mediaResource.id)
-    response.payload.value.href
-  end
-end

src/classes/paragraph_converter.cr

@@ -21,9 +21,7 @@ class ParagraphConverter
       when PostResponse::ParagraphType::IFRAME
         paragraph = paragraphs.shift
         if iframe = paragraph.iframe
-          resolver = IFrameMediaResolver.new(iframe: iframe)
-          href = resolver.fetch_href
-          node = IFrame.new(href: href)
+          node = IFrame.new(href: iframe.mediaResource.href)
         else
           node = Empty.new
         end

src/clients/medium_client.cr

@@ -7,13 +7,6 @@ class MediumClient
     PostResponse::Root.from_json(response.body)
   end
 
-  def self.media_data(media_id : String) : MediaResponse::Root
-    client = HTTP::Client.new("medium.com", tls: true)
-    response = client.get("/media/#{media_id}", headers: headers)
-    body = response.body.sub(JSON_HIJACK_STRING, nil)
-    MediaResponse::Root.from_json(body)
-  end
-
   private def self.headers : HTTP::Headers
     HTTP::Headers{
       "Accept"       => "application/json",
@@ -46,7 +39,7 @@ class MediumClient
                 href
                 iframe {
                   mediaResource {
-                    id
+                    href
                   }
                 }
                 metadata {

src/models/media_response.cr

@@ -1,17 +0,0 @@
-class MediaResponse
-  class Base
-    include JSON::Serializable
-  end
-
-  class Root < Base
-    property payload : Payload
-  end
-
-  class Payload < Base
-    property value : Value
-  end
-
-  class Value < Base
-    property href : String
-  end
-end

src/models/post_response.cr

@@ -78,7 +78,7 @@ class PostResponse
   end
 
   class MediaResource < Base
-    property id : String
+    property href : String
   end
 
   class Metadata < Base