From 25af95e0e6f2ea13de1b694c5e289c987d84a12d Mon Sep 17 00:00:00 2001
From: Spencer Alan <hello@spenceralan.com>
Date: Wed, 5 Dec 2018 15:08:22 -0500
Subject: [PATCH] add json scim response structure

---
 app/controllers/concerns/scim_rails/response.rb | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 66 insertions(+), 1 deletion(-)

diff --git a/app/controllers/concerns/scim_rails/response.rb b/app/controllers/concerns/scim_rails/response.rb
index a9683eb..856ef95 100644
--- a/app/controllers/concerns/scim_rails/response.rb
+++ b/app/controllers/concerns/scim_rails/response.rb
@@ -1,7 +1,72 @@
 module ScimRails
   module Response
+    CONTENT_TYPE = "application/scim+json, application/json".freeze
+
     def json_response(object, status = :ok)
-      render(json: object, status: status)
+      render \
+        json: object,
+        status: status
+    end
+
+    def json_scim_response(object:, status: :ok, counts: nil)
+      case params[:action]
+      when "index"
+        render \
+          json: list_response(object, counts),
+          status: status,
+          content_type: CONTENT_TYPE
+      when "show", "create", "update"
+        render \
+          json: user_response(object),
+          status: status,
+          content_type: CONTENT_TYPE
+      end
+    end
+
+    private
+
+    def list_response(object, counts)
+      object = object
+        .order(:id)
+        .offset(counts.offset)
+        .limit(counts.limit)
+      {
+        "schemas": [
+            "urn:ietf:params:scim:api:messages:2.0:ListResponse"
+        ],
+        "totalResults": counts.total,
+        "startIndex": counts.start_index,
+        "itemsPerPage": counts.limit,
+        "Resources": list_users(object)
+      }
+    end
+
+    def list_users(users)
+      users.map do |user|
+        user_response(user)
+      end
+    end
+
+    def user_response(user)
+      schema = ScimRails.config.user_schema
+      find_value(user, schema)
+    end
+
+    def find_value(user, object)
+      case object
+      when Hash
+        object.each.with_object({}) do |(key, value), hash|
+          hash[key] = find_value(user, value)
+        end
+      when Array
+        object.map do |value|
+          find_value(user, value)
+        end
+      when Symbol
+        user.public_send(object)
+      else
+        object
+      end
     end
   end
 end
--
libgit2 0.21.0