Accept all known medium post path types

Including:

* https://example.com/my-cool-post-123456abcdef
* https://example.com/123456abcdef
* https://medium.com/@user/my-cool-post-123456abcdef
* https://medium.com/user/my-cool-post-123456abcdef
* https://medium.com/p/my-cool-post-123456abcdef
* https://medium.com/posts/my-cool-post-123456abcdef
* https://medium.com/p/123456abcdef

Replace any of those posts with the scribe domain and it should resolve

spec/requests/articles/show_spec.cr

@@ -0,0 +1,71 @@
+require "../../spec_helper"
+
+class TestClient < MediumClient
+  class_property last_post_id : String = ""
+
+  def self.post_data(post_id : String) : PostResponse::Root
+    self.last_post_id = post_id
+    PostResponse::Root.from_json <<-JSON
+      {
+        "data": {
+          "post": {
+            "title": "a title",
+            "createdAt": 0,
+            "creator": { "id": "0", "name": "username" },
+            "content": { "bodyModel": { "paragraphs": [] } }
+          }
+        }
+      }
+    JSON
+  end
+end
+
+class Articles::Show
+  def client_class
+    TestClient
+  end
+end
+
+describe Articles::Show do
+  it "parses the post id for urls like /@user/:post_slug" do
+    HttpClient.get("/@user/my-post-111111abcdef")
+
+    TestClient.last_post_id.should eq("111111abcdef")
+  end
+
+  it "parses the post id for urls like /user/:post_slug" do
+    HttpClient.get("/user/my-post-222222abcdef")
+
+    TestClient.last_post_id.should eq("222222abcdef")
+  end
+
+  it "parses the post id for urls like /p/:post_slug" do
+    HttpClient.get("/p/my-post-333333abcdef")
+
+    TestClient.last_post_id.should eq("333333abcdef")
+  end
+
+  it "parses the post id for urls like /posts/:post_slug" do
+    HttpClient.get("/posts/my-post-444444abcdef")
+
+    TestClient.last_post_id.should eq("444444abcdef")
+  end
+
+  it "parses the post id for urls like /p/:post_id" do
+    HttpClient.get("/p/555555abcdef")
+
+    TestClient.last_post_id.should eq("555555abcdef")
+  end
+
+  it "parses the post id for urls like /:post_slug" do
+    HttpClient.get("/my-post-666666abcdef")
+
+    TestClient.last_post_id.should eq("666666abcdef")
+  end
+
+  it "parses the post id for urls like /https:/medium.com/@user/:post_slug" do
+    HttpClient.get("/https:/medium.com/@user/777777abcdef")
+
+    TestClient.last_post_id.should eq("777777abcdef")
+  end
+end

spec/support/api_client.cr

@@ -1,6 +0,0 @@
-class ApiClient < Lucky::BaseHTTPClient
-  def initialize
-    super
-    headers("Content-Type": "application/json")
-  end
-end

spec/support/http_client.cr

@@ -0,0 +1,2 @@
+class HttpClient < Lucky::BaseHTTPClient
+end