diff --git a/app/controllers/mozilla_iam/admin/group_mappings_controller.rb b/app/controllers/mozilla_iam/admin/group_mappings_controller.rb
index 0193348..f31b28f 100644
--- a/app/controllers/mozilla_iam/admin/group_mappings_controller.rb
+++ b/app/controllers/mozilla_iam/admin/group_mappings_controller.rb
@@ -11,7 +11,6 @@ module MozillaIAM
 
     def create
       mapping = GroupMapping.new(group_mappings_params)
-      mapping.authoritative = false if params[:authoritative].nil?
       mapping.group = Group.find_by(name: params[:group_name])
       mapping.save!
       render json: success_json
@@ -40,8 +39,7 @@ module MozillaIAM
     def group_mappings_params
       params.permit(
         :id,
-        :iam_group_name,
-        :authoritative
+        :iam_group_name
       )
     end
 
diff --git a/app/serializers/mozilla_iam/group_mapping_serializer.rb b/app/serializers/mozilla_iam/group_mapping_serializer.rb
index 489ac64..beb56dc 100644
--- a/app/serializers/mozilla_iam/group_mapping_serializer.rb
+++ b/app/serializers/mozilla_iam/group_mapping_serializer.rb
@@ -2,8 +2,7 @@ module MozillaIAM
   class GroupMappingSerializer < ApplicationSerializer
     attributes :id,
                :group_name,
-               :iam_group_name,
-               :authoritative
+               :iam_group_name
 
     def group_name
       object.group.name
diff --git a/assets/javascripts/discourse/models/mapping.js.es6 b/assets/javascripts/discourse/models/mapping.js.es6
index ab0e250..9102507 100644
--- a/assets/javascripts/discourse/models/mapping.js.es6
+++ b/assets/javascripts/discourse/models/mapping.js.es6
@@ -4,8 +4,7 @@ const Mapping = Ember.Object.extend({
   asJSON () {
     return {
       group_name: this.get('group_name'),
-      iam_group_name: this.get('iam_group_name'),
-      authoritative: this.get('authoritative')
+      iam_group_name: this.get('iam_group_name')
     }
   },
 
diff --git a/assets/javascripts/discourse/templates/admin-plugins-mozilla-iam-mappings-edit.hbs b/assets/javascripts/discourse/templates/admin-plugins-mozilla-iam-mappings-edit.hbs
index 8d5d956..f8c0ce5 100644
--- a/assets/javascripts/discourse/templates/admin-plugins-mozilla-iam-mappings-edit.hbs
+++ b/assets/javascripts/discourse/templates/admin-plugins-mozilla-iam-mappings-edit.hbs
@@ -10,11 +10,6 @@
     {{text-field name='iam_group_name' value=model.iam_group_name}}
   </div>
 
-  <div>
-    <label for='authoritative'>Authoritative IAM Group?</label>
-    {{input type='checkbox' name='authoritative' checked=model.authoritative}}
-  </div>
-
   <div class='buttons'>
     <button {{action 'save'}} class='btn btn-primary'>{{i18n 'admin.customize.save'}}</button>
     <button {{action 'destroy'}} class='btn btn-danger'>{{fa-icon 'trash-o'}}{{i18n 'admin.customize.delete'}}</button>
diff --git a/assets/javascripts/discourse/templates/admin-plugins-mozilla-iam-mappings-index.hbs b/assets/javascripts/discourse/templates/admin-plugins-mozilla-iam-mappings-index.hbs
index e5b92cb..6031dbe 100644
--- a/assets/javascripts/discourse/templates/admin-plugins-mozilla-iam-mappings-index.hbs
+++ b/assets/javascripts/discourse/templates/admin-plugins-mozilla-iam-mappings-index.hbs
@@ -4,7 +4,6 @@
       <th>ID</th>
       <th>Discourse Group</th>
       <th>IAM Group</th>
-      <th>Authoritative?</th>
     </tr>
   </thead>
   <tbody>
@@ -13,7 +12,6 @@
         <td>{{#link-to 'adminPlugins.mozilla-iam.mappings.edit' mapping}}{{mapping.id}}{{/link-to}}</td>
         <td>{{mapping.group_name}}</td>
         <td>{{mapping.iam_group_name}}</td>
-        <td>{{mapping.authoritative}}</td>
       </tr>
     {{/each}}
   </tbody>
diff --git a/assets/javascripts/discourse/templates/connectors/admin-user-details/mozilla-iam.hbs b/assets/javascripts/discourse/templates/connectors/admin-user-details/mozilla-iam.hbs
new file mode 100644
index 0000000..c21dc9a
--- /dev/null
+++ b/assets/javascripts/discourse/templates/connectors/admin-user-details/mozilla-iam.hbs
@@ -0,0 +1,26 @@
+<section class='details'>
+  <h1>Mozilla IAM</h1>
+
+  <div class='display-row'>
+    <div class='field'>User ID</div>
+    <div class='value'>
+      {{#if model.mozilla_iam.uid}}
+        {{model.mozilla_iam.uid}}
+      {{else}}
+        &mdash;
+      {{/if}}
+    </div>
+  </div>
+
+  <div class='display-row'>
+    <div class='field'>Last Refresh</div>
+    <div class='value'>
+      {{#if model.mozilla_iam.last_refresh}}
+        {{model.mozilla_iam.last_refresh}}
+      {{else}}
+        &mdash;
+      {{/if}}
+    </div>
+  </div>
+
+</section>
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 8b2d7ed..ef0bcc8 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -4,6 +4,7 @@ en:
       site_settings:
         categories:
           auth0: 'Auth0'
+          mozilla_iam: 'Mozilla IAM'
     mozilla_iam:
       mappings:
         title: 'IAM Group Mappings'
diff --git a/config/locales/server.en.yml b/config/locales/server.en.yml
index c0f97c3..0d886ac 100644
--- a/config/locales/server.en.yml
+++ b/config/locales/server.en.yml
@@ -3,3 +3,5 @@ en:
     auth0_domain: 'You auth0 domain. This is typically <account>.auth0.com.'
     auth0_client_id: 'Your auth0 client id. Find it on the application settings on the Auth0 dashboard.'
     auth0_client_secret: 'Your auth0 client secret. Find it on the application settings on the Auth0 dashboard.'
+    mozilla_iam_person_api_url: 'URL to the Mozilla IAM Person API endpoint'
+    mozilla_iam_person_api_aud: 'Audience for the Mozilla IAM Person API'
diff --git a/config/settings.yml b/config/settings.yml
index 61e3bec..1c13f3e 100644
--- a/config/settings.yml
+++ b/config/settings.yml
@@ -8,3 +8,10 @@ auth0:
   auth0_client_secret:
     default: ''
     shadowed_by_global: true
+mozilla_iam:
+  mozilla_iam_person_api_url:
+    default: 'https://uhbz4h3wa8.execute-api.us-west-2.amazonaws.com/prod'
+    shadowed_by_global: true
+  mozilla_iam_person_api_aud:
+    default: 'https://person-api.sso.mozilla.com'
+    shadowed_by_global: true
diff --git a/db/migrate/20171219175923_remove_authoritative_from_mozilla_iam_group_mappings.rb b/db/migrate/20171219175923_remove_authoritative_from_mozilla_iam_group_mappings.rb
new file mode 100644
index 0000000..e632d60
--- /dev/null
+++ b/db/migrate/20171219175923_remove_authoritative_from_mozilla_iam_group_mappings.rb
@@ -0,0 +1,5 @@
+class RemoveAuthoritativeFromMozillaIAMGroupMappings < ActiveRecord::Migration[5.1]
+  def change
+    remove_column :mozilla_iam_group_mappings, :authoritative, :boolean
+  end
+end
diff --git a/lib/mozilla_iam.rb b/lib/mozilla_iam.rb
index f588ea7..1d94b80 100644
--- a/lib/mozilla_iam.rb
+++ b/lib/mozilla_iam.rb
@@ -1,6 +1,8 @@
 require_relative 'mozilla_iam/engine'
 
 require_relative 'mozilla_iam/api'
+require_relative 'mozilla_iam/person_api'
+require_relative 'mozilla_iam/management_api'
 require_relative 'mozilla_iam/application_extensions'
 require_relative 'mozilla_iam/authenticator'
 require_relative 'mozilla_iam/jwks'
diff --git a/lib/mozilla_iam/api.rb b/lib/mozilla_iam/api.rb
index 781d78e..a8bfe1f 100644
--- a/lib/mozilla_iam/api.rb
+++ b/lib/mozilla_iam/api.rb
@@ -1,74 +1,75 @@
 module MozillaIAM
   class API
-    class << self
+    def initialize(config)
+      @client_id = config[:client_id] || SiteSetting.auth0_client_id
+      @client_secret = config[:client_secret] || SiteSetting.auth0_client_secret
+      @token_endpoint = config[:token_endpoint] || "https://#{SiteSetting.auth0_domain}/oauth/token"
+      @url = config[:url]
+      raise ArgumentError, "no url in config" unless @url
+      @aud = config[:aud]
+      raise ArgumentError, "no aud in config" unless @aud
+    end
 
-      def user(uid)
-        Rails.logger.info("Auth0 API query for user_id: #{uid}")
-        profile = get("users/#{uid}", fields: 'app_metadata')
-        { app_metadata: {} }.merge(profile)[:app_metadata]
+    private
+
+    def get(path, params = false)
+      path = URI.encode(path)
+      uri = URI("#{@url}/#{path}")
+      uri.query = URI.encode_www_form(params) if params
+
+      req = Net::HTTP::Get.new(uri)
+      req['Authorization'] = "Bearer #{access_token}"
+
+      res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
+        http.request(req)
       end
 
-      private
-
-      def get(path, params = false)
-        path = URI.encode(path)
-        uri = URI("https://#{SiteSetting.auth0_domain}/api/v2/#{path}")
-        uri.query = URI.encode_www_form(params) if params
-
-        req = Net::HTTP::Get.new(uri)
-        req['Authorization'] = "Bearer #{access_token}"
-
-        res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
-          http.request(req)
-        end
-
-        if res.code == '200'
-          MultiJson.load(res.body, symbolize_keys: true)
-        else
-          {}
-        end
+      if res.code == '200'
+        MultiJson.load(res.body, symbolize_keys: true)
+      else
+        {}
       end
+    end
 
-      def access_token
-        api_creds = ::PluginStore.get('mozilla-iam', 'api_creds')
-        if api_creds.nil? || api_creds[:exp] < Time.now.to_i + 60
-          refresh_token
-        else
-          api_creds[:access_token]
-        end
+    def access_token
+      api_token = ::PluginStore.get('mozilla-iam', "#{@aud}_token")
+      if api_token.nil? || api_token[:exp] < Time.now.to_i + 60
+        refresh_token
+      else
+        api_token[:access_token]
       end
+    end
 
-      def refresh_token
-        token = fetch_token
-        payload = verify_token(token)
-        ::PluginStore.set('mozilla-iam', 'api_creds', { access_token: token, exp: payload['exp'] })
-        token
-      end
+    def refresh_token
+      token = fetch_token
+      payload = verify_token(token)
+      ::PluginStore.set('mozilla-iam', "#{@aud}_token", { access_token: token, exp: payload['exp'] })
+      token
+    end
 
-      def fetch_token
-        response =
-          Faraday.post(
-            'https://' + SiteSetting.auth0_domain + '/oauth/token',
-            {
-              grant_type: 'client_credentials',
-              client_id: SiteSetting.auth0_client_id,
-              client_secret: SiteSetting.auth0_client_secret,
-              audience: 'https://' + SiteSetting.auth0_domain + '/api/v2/'
-            }
-          )
-        MultiJson.load(response.body)['access_token']
-      end
+    def fetch_token
+      response =
+        Faraday.post(
+          @token_endpoint,
+          {
+            grant_type: 'client_credentials',
+            client_id: @client_id,
+            client_secret: @client_secret,
+            audience: @aud
+          }
+        )
+      MultiJson.load(response.body)['access_token']
+    end
 
-      def verify_token(token)
-        payload, header =
-          JWT.decode(
-            token,
-            aud: 'https://' + SiteSetting.auth0_domain + '/api/v2/',
-            sub: SiteSetting.auth0_client_id + '@clients',
-            verify_sub: true
-          )
-        payload
-      end
+    def verify_token(token)
+      payload, header =
+        JWT.decode(
+          token,
+          aud: @aud,
+          sub: @client_id + '@clients',
+          verify_sub: true
+        )
+      payload
     end
   end
 end
diff --git a/lib/mozilla_iam/management_api.rb b/lib/mozilla_iam/management_api.rb
new file mode 100644
index 0000000..ba7d577
--- /dev/null
+++ b/lib/mozilla_iam/management_api.rb
@@ -0,0 +1,17 @@
+module MozillaIAM
+  class ManagementAPI < API
+
+    def initialize(config={})
+      config = {
+        url: "https://#{SiteSetting.auth0_domain}/api/v2",
+        aud: "https://#{SiteSetting.auth0_domain}/api/v2/"
+      }.merge(config)
+      super(config)
+    end
+
+    def profile(uid)
+      get("users/#{uid}")
+    end
+
+  end
+end
diff --git a/lib/mozilla_iam/person_api.rb b/lib/mozilla_iam/person_api.rb
new file mode 100644
index 0000000..4eeacfd
--- /dev/null
+++ b/lib/mozilla_iam/person_api.rb
@@ -0,0 +1,18 @@
+module MozillaIAM
+  class PersonAPI < API
+
+    def initialize(config={})
+      config = {
+        url: SiteSetting.mozilla_iam_person_api_url,
+        aud: SiteSetting.mozilla_iam_person_api_aud
+      }.merge(config)
+      super(config)
+    end
+
+    def profile(uid)
+      profile = get("profile/#{uid}")
+      MultiJson.load(profile[:body], symbolize_keys: true)
+    end
+
+  end
+end
diff --git a/lib/mozilla_iam/profile.rb b/lib/mozilla_iam/profile.rb
index aa28700..4290b2a 100644
--- a/lib/mozilla_iam/profile.rb
+++ b/lib/mozilla_iam/profile.rb
@@ -23,10 +23,14 @@ module MozillaIAM
       end
     end
 
+    def groups
+      Array(mgmt_profile[:groups]) | Array(mgmt_profile.dig(:app_metadata, :groups))
+    end
+
     private
 
-    def profile
-      @profile ||= API.user(@uid)
+    def mgmt_profile
+      @mgmt_profile ||= ManagementAPI.new.profile(@uid)
     end
 
     def last_refresh
@@ -47,16 +51,7 @@ module MozillaIAM
 
     def update_groups
       GroupMapping.all.each do |mapping|
-        if mapping.authoritative
-          in_group =
-            profile[:authoritativeGroups]&.any? do |authoritative_group|
-              authoritative_group[:name] == mapping.iam_group_name
-            end
-        else
-          in_group = profile[:groups]&.include?(mapping.iam_group_name)
-        end
-
-        if in_group
+        if groups.include?(mapping.iam_group_name)
           add_to_group(mapping.group)
         else
           remove_from_group(mapping.group)
diff --git a/plugin.rb b/plugin.rb
index 7a893e7..6eae3ae 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -1,6 +1,6 @@
 # name: mozilla-iam
 # about: A plugin to integrate Discourse with Mozilla's Identity and Access Management (IAM) system
-# version: 0.1.1
+# version: 0.1.3
 # authors: Leo McArdle
 # url: https://github.com/mozilla/discourse-mozilla-iam
 
@@ -22,3 +22,15 @@ auth_provider(title: 'Mozilla',
               message: 'Log In / Sign Up',
               authenticator: MozillaIAM::Authenticator.new('auth0', trusted: true),
               full_screen_login: true)
+
+after_initialize do
+
+  add_to_serializer(:AdminDetailedUser, :mozilla_iam, false) do
+    object.custom_fields.select do |k, v|
+      k.start_with?('mozilla_iam')
+    end.map do |k, v|
+      [k.sub('mozilla_iam_', ''), v]
+    end.to_h
+  end
+
+end
diff --git a/spec/components/mozilla_iam/api_spec.rb b/spec/components/mozilla_iam/api_spec.rb
new file mode 100644
index 0000000..195ac2c
--- /dev/null
+++ b/spec/components/mozilla_iam/api_spec.rb
@@ -0,0 +1,152 @@
+require_relative "../../iam_helper"
+
+describe MozillaIAM::API do
+  let(:config) do
+    return {
+      client_id: "abc",
+      client_secret: "def",
+      token_endpoint: "https://example.com/oauth/token",
+      url: "https://example.com/api",
+      aud: "example.com"
+    }
+  end
+
+  let(:api) { MozillaIAM::API.new(config) }
+
+  context "#initialize" do
+    before do
+      SiteSetting.auth0_client_id = "xyz"
+      SiteSetting.auth0_client_secret = "zyx"
+      SiteSetting.auth0_domain = "foobar.com"
+    end
+
+    it "uses config options" do
+      expect(api.instance_variable_get(:@client_id)).to eq config[:client_id]
+      expect(api.instance_variable_get(:@client_secret)).to eq config[:client_secret]
+      expect(api.instance_variable_get(:@token_endpoint)).to eq config[:token_endpoint]
+      expect(api.instance_variable_get(:@url)).to eq config[:url]
+      expect(api.instance_variable_get(:@aud)).to eq config[:aud]
+    end
+
+    it "uses default options if none are set" do
+      config = {
+        url: "https://example.com/api",
+        aud: "example.com"
+      }
+      api = MozillaIAM::API.new(config)
+
+      expect(api.instance_variable_get(:@client_id)).to eq SiteSetting.auth0_client_id
+      expect(api.instance_variable_get(:@client_secret)).to eq SiteSetting.auth0_client_secret
+      expect(api.instance_variable_get(:@token_endpoint)).to eq "https://#{SiteSetting.auth0_domain}/oauth/token"
+      expect(api.instance_variable_get(:@url)).to eq config[:url]
+      expect(api.instance_variable_get(:@aud)).to eq config[:aud]
+    end
+
+    it "throws error if url isn't specified" do
+      config = { aud: "example.com" }
+      expect { MozillaIAM::API.new(config) }.to raise_error "no url in config"
+    end
+
+    it "throws error if aud isn't specified" do
+      config = { url: "https://example.com/api" }
+      expect { MozillaIAM::API.new(config) }.to raise_error "no aud in config"
+    end
+  end
+
+  context "#get" do
+    let(:res_success) { return { status: 200, body: '{"success":"true"}' } }
+
+    before do
+      api.expects(:access_token).returns('supersecret')
+    end
+
+    it "should get the right path" do
+      stub_request(:get, "https://example.com/api/right_path").to_return(res_success)
+      expect(api.send(:get, "right_path")[:success]).to eq "true"
+    end
+
+    it "should set the Authorization header" do
+      stub_request(:get, "https://example.com/api/").with(headers: {
+        "Authorization": "Bearer supersecret"
+        }).to_return(res_success)
+        expect(api.send(:get, "")[:success]).to eq "true"
+    end
+
+    it "should send parameters" do
+      stub_request(:get, "https://example.com/api/?foo=bar").to_return(res_success)
+      expect(api.send(:get, "", foo: 'bar')[:success]).to eq "true"
+    end
+
+    it "should return an empty hash if the the status code isn't 200" do
+      stub_request(:get, "https://example.com/api/").to_return(status: 403)
+      expect(api.send(:get, "")).to eq({})
+    end
+  end
+
+  context "#access_token" do
+    before do
+      api.stubs(:refresh_token).returns("refreshed_secret")
+    end
+
+    it "fetches the token from aud prefix" do
+      ::PluginStore.set('mozilla-iam', "example.com_token", exp: Time.now.to_i + 1000, access_token: "secret")
+      expect(api.send(:access_token)).to eq "secret"
+    end
+
+    it "refreshes the token if there's no saved token" do
+      expect(api.send(:access_token)).to eq "refreshed_secret"
+    end
+
+    it "refreshes the token if the saved token is expired" do
+      ::PluginStore.set('mozilla-iam', "example.com_token", exp: Time.now.to_i, access_token: "secret")
+      expect(api.send(:access_token)).to eq "refreshed_secret"
+    end
+  end
+
+  context "#refresh_token" do
+    it "stores token with aud prefix" do
+      api.expects(:fetch_token).returns("token")
+      api.expects(:verify_token).with("token").returns({ "exp" => "exp" })
+      token = api.send(:refresh_token)
+      saved_token = ::PluginStore.get('mozilla-iam', "example.com_token")
+      expect(token).to eq "token"
+      expect(saved_token[:access_token]).to eq "token"
+      expect(saved_token[:exp]).to eq "exp"
+    end
+  end
+
+  context "#fetch_token" do
+    it "fetches token from token_endpoint" do
+      stub_request(:post, "https://example.com/oauth/token").with(
+        body: {
+          grant_type: "client_credentials",
+          client_id: "abc",
+          client_secret: "def",
+          audience: "example.com"
+        }
+      ).to_return(status: 200, body: '{"access_token":"fetched_token"}')
+      token = api.send(:fetch_token)
+      expect(token).to eq "fetched_token"
+    end
+  end
+
+  context "#verify_token" do
+    it "returns verified token" do
+      SiteSetting.auth0_domain = "example.com"
+      MozillaIAM::JWKS.expects(:public_key).with("jwt").returns("public_key")
+      ::JWT.expects(:decode).with("jwt", "public_key", true, {
+        algorithm: "RS256",
+        iss: "https://example.com/",
+        aud: "example.com",
+        sub: "abc@clients",
+        verify_iss: true,
+        verify_iat: true,
+        verify_aud: true,
+        verify_sub: true,
+        verify_iss: true
+      }).returns(["verified_token", "header"])
+      token = api.send(:verify_token, "jwt")
+      expect(token).to eq "verified_token"
+    end
+  end
+end
diff --git a/spec/components/mozilla_iam/management_api_spec.rb b/spec/components/mozilla_iam/management_api_spec.rb
new file mode 100644
index 0000000..fc9a2f8
--- /dev/null
+++ b/spec/components/mozilla_iam/management_api_spec.rb
@@ -0,0 +1,27 @@
+require_relative "../../iam_helper"
+
+describe MozillaIAM::ManagementAPI do
+  let(:api) { MozillaIAM::ManagementAPI.new }
+  before do
+    SiteSetting.auth0_domain = "foobar.com"
+  end
+
+  context "#initialize" do
+    it "sets url and aud based on auth0_domain" do
+      expect(api.instance_variable_get(:@url)).to eq "https://foobar.com/api/v2"
+      expect(api.instance_variable_get(:@aud)).to eq "https://foobar.com/api/v2/"
+    end
+  end
+
+  context "#profile" do
+    it "returns the management api profile" do
+      api.expects(:get).with("users/uid").returns("profile")
+      expect(api.profile("uid")).to eq "profile"
+    end
+
+    it "returns an empty hash if a profile doesn't exist" do
+      api.expects(:get).with("users/uid").returns({})
+      expect(api.profile("uid")).to eq({})
+    end
+  end
+end
diff --git a/spec/components/mozilla_iam/person_api_spec.rb b/spec/components/mozilla_iam/person_api_spec.rb
new file mode 100644
index 0000000..b6124cb
--- /dev/null
+++ b/spec/components/mozilla_iam/person_api_spec.rb
@@ -0,0 +1,28 @@
+require_relative "../../iam_helper"
+
+describe MozillaIAM::PersonAPI do
+  let(:api) { MozillaIAM::PersonAPI.new }
+  before do
+    SiteSetting.mozilla_iam_person_api_url = "https://person.com"
+    SiteSetting.mozilla_iam_person_api_aud = "person.com"
+  end
+
+  context "#initialize" do
+    it "sets url and aud based on SiteSetting" do
+      expect(api.instance_variable_get(:@url)).to eq "https://person.com"
+      expect(api.instance_variable_get(:@aud)).to eq "person.com"
+    end
+  end
+
+  context "#profile" do
+    it "returns the profile for a specific user" do
+      api.expects(:get).with("profile/uid").returns(body: '{"profile":"profile"}')
+      expect(api.profile("uid")[:profile]).to eq "profile"
+    end
+
+    it "returns an empty hash if a profile doesn't exist" do
+      api.expects(:get).with("profile/uid").returns(body: '{}')
+      expect(api.profile("uid")).to eq({})
+    end
+  end
+end
diff --git a/spec/components/mozilla_iam/profile_spec.rb b/spec/components/mozilla_iam/profile_spec.rb
index a63ae28..e391dcb 100644
--- a/spec/components/mozilla_iam/profile_spec.rb
+++ b/spec/components/mozilla_iam/profile_spec.rb
@@ -1,9 +1,19 @@
 require_relative '../../iam_helper'
 
 describe MozillaIAM::Profile do
+  let(:user) { Fabricate(:user) }
+  let(:profile) { MozillaIAM::Profile.new(user, "uid") }
+
   context '.refresh' do
+    it "refreshes a user who already has a profile" do
+      profile
+      MozillaIAM::Profile.expects(:new).with(user, "uid").returns(profile)
+      MozillaIAM::Profile.any_instance.expects(:refresh).returns(true)
+      result = MozillaIAM::Profile.refresh(user)
+      expect(result).to be true
+    end
+
     it 'should return nil if user has no profile' do
-      user = Fabricate(:user)
       result = MozillaIAM::Profile.refresh(user)
       expect(result).to be_nil
     end
@@ -11,23 +21,107 @@ describe MozillaIAM::Profile do
 
   context '#initialize' do
     it "should save a user's uid" do
-      user = Fabricate(:user)
-      uid = create_uid(user.username)
-
-      MozillaIAM::Profile.new(user, uid)
-
-      expect(user.custom_fields['mozilla_iam_uid']).to eq(uid)
+      profile
+      expect(user.custom_fields['mozilla_iam_uid']).to eq("uid")
     end
   end
 
   context '#refresh' do
-    it "should refresh a user's profile if it hasn't been refreshed before" do
-      user = Fabricate(:user)
-      uid = create_uid(user.username)
+    it "returns #force_refresh if #should_refresh? is true" do
+      profile.expects(:should_refresh?).returns(true)
+      profile.expects(:last_refresh).never
+      profile.expects(:force_refresh).once.returns(true)
+      expect(profile.refresh).to be true
+    end
 
-      result = MozillaIAM::Profile.new(user, uid).refresh
+    it "returns #last_refresh if #should_refresh? is false" do
+      profile.expects(:should_refresh?).returns(false)
+      profile.expects(:force_refresh).never
+      profile.expects(:last_refresh).once.returns(true)
+      expect(profile.refresh).to be true
+    end
+  end
 
-      expect(result).to be_within(5.seconds).of Time.now
+  context "#force_refresh" do
+    it "calls update_groups" do
+      profile.expects(:update_groups)
+      profile.force_refresh
+    end
+
+    it "sets the last refresh to now and returns it" do
+      profile.expects(:set_last_refresh).with() { |t| t.between?(Time.now() - 5, Time.now()) }.returns("time now")
+      expect(profile.force_refresh).to eq "time now"
+    end
+  end
+
+  context "#groups" do
+    it "merges app_metadata.groups into groups from management api" do
+      profile.expects(:mgmt_profile).at_least_once.returns(groups: ['a'], app_metadata: { groups: ['b', 'a', 'c'] })
+      expect(profile.groups).to eq ['a', 'b', 'c']
+    end
+
+    it "returns app_metadata.groups when groups is nil" do
+      profile.expects(:mgmt_profile).at_least_once.returns(app_metadata: { groups: ['a', 'b', 'c'] })
+      expect(profile.groups).to eq ['a', 'b', 'c']
+    end
+
+    it "returns groups when app_metadata is nil" do
+      profile.expects(:mgmt_profile).at_least_once.returns(groups: ['a', 'b', 'c'])
+      expect(profile.groups).to eq ['a', 'b', 'c']
+    end
+
+    it "returns empty array when groups and app_metadata are nil" do
+      profile.expects(:mgmt_profile).at_least_once.returns({})
+      expect(profile.groups).to eq []
+    end
+  end
+
+  context "#mgmt_profile" do
+    it "returns a user's profile from the Management API and stores it in an instance variable" do
+      MozillaIAM::ManagementAPI.any_instance.expects(:profile).with("uid").returns("profile")
+      expect(profile.send(:mgmt_profile)).to eq "profile"
+      expect(profile.instance_variable_get(:@mgmt_profile)).to eq "profile"
+    end
+  end
+
+  context "#last_refresh" do
+    it "returns a user's last refreshed time if set and stores it in an instance variable" do
+      time_string = Time.now().to_s
+      time = Time.parse(time_string)
+      profile.expects(:get).returns(time_string)
+      expect(profile.send(:last_refresh)).to eq time
+      expect(profile.instance_variable_get(:@last_refresh)).to eq time
+    end
+
+    it "returns nil if a user's has no last refresh time" do
+      profile.expects(:get).returns(nil)
+      expect(profile.send(:last_refresh)).to be_nil
+    end
+  end
+
+  context "#set_last_refresh" do
+    it "stores a time and stores it in an instance variable" do
+      time = Time.now()
+      profile.expects(:set).with(:last_refresh, time).returns(time)
+      expect(profile.send(:set_last_refresh, time)).to eq time
+      expect(profile.instance_variable_get(:@last_refresh)).to eq time
+    end
+  end
+
+  context "#should_refresh?" do
+    it "returns true if last_refresh is nil" do
+      profile.expects(:last_refresh).returns(nil)
+      expect(profile.send(:should_refresh?)).to be true
+    end
+
+    it "returns true if last_refresh was over 15 minutes ago" do
+      profile.expects(:last_refresh).at_least_once.returns(Time.now() - 16.minutes)
+      expect(profile.send(:should_refresh?)).to be true
+    end
+
+    it "returns false if last_refresh was within 15 minutes ago" do
+      profile.expects(:last_refresh).at_least_once.returns(Time.now() - 14.minutes)
+      expect(profile.send(:should_refresh?)).to be false
     end
   end
 
@@ -38,55 +132,106 @@ describe MozillaIAM::Profile do
 
     before do
       MozillaIAM::GroupMapping.new(iam_group_name: 'iam_group',
-                                   authoritative: false,
                                    group: group).save!
     end
 
     it 'should remove a user from a mapped group' do
+      profile.expects(:groups).returns([])
       group.users << user
 
       expect(group.users.count).to eq 1
 
-      stub_api_users_request(uid, groups: [])
+      profile.send(:update_groups)
 
-      MozillaIAM::Profile.new(user, uid).refresh
       expect(group.users.count).to eq 0
     end
 
     it 'should add a user to a mapped group' do
+      profile.expects(:groups).returns(['iam_group'])
       expect(group.users.count).to eq 0
 
-      stub_api_users_request(uid, groups: ['iam_group'])
+      profile.send(:update_groups)
 
-      MozillaIAM::Profile.new(user, uid).refresh
       expect(group.users.count).to eq 1
     end
 
     it 'should work if groups attribute is undefined' do
       expect(group.users.count).to eq 0
 
-      stub_api_users_request(uid, {})
+      MozillaIAM::ManagementAPI.any_instance.expects(:profile).returns(groups: nil, app_metadata: { groups: nil })
 
-      MozillaIAM::Profile.new(user, uid).refresh
+      profile.send(:update_groups)
       expect(group.users.count).to eq 0
     end
 
     it 'should work if groups attribute is an empty string' do
       expect(group.users.count).to eq 0
 
-      stub_api_users_request(uid, groups: '')
+      MozillaIAM::ManagementAPI.any_instance.expects(:profile).returns(groups: '', app_metadata: { groups: '' })
 
-      MozillaIAM::Profile.new(user, uid).refresh
+      profile.send(:update_groups)
       expect(group.users.count).to eq 0
     end
 
     it 'should work if groups attribute is "None"' do
       expect(group.users.count).to eq 0
 
-      stub_api_users_request(uid, groups: 'None')
+      MozillaIAM::ManagementAPI.any_instance.expects(:profile).returns(groups: "None", app_metadata: { groups: "None" })
 
-      MozillaIAM::Profile.new(user, uid).refresh
+      profile.send(:update_groups)
       expect(group.users.count).to eq 0
     end
   end
+
+  context "#add_to_group" do
+    it "adds the user to a group" do
+      group = Fabricate(:group)
+      profile.send(:add_to_group, group)
+      expect(group.users.first).to eq user
+    end
+  end
+
+  context "#remove_from_group" do
+    it "removes the user from a group" do
+      group = Fabricate(:group, users: [user])
+      profile.send(:remove_from_group, group)
+      expect(group.users.count).to eq 0
+    end
+
+    it "doesn't error out when removing a user from a group they're not in" do
+      group = Fabricate(:group)
+      profile.send(:remove_from_group, group)
+      expect(group.users.count).to eq 0
+    end
+  end
+
+  context ".get" do
+    it "returns a value for the key" do
+      described_class.set(user, "key", "value")
+      expect(described_class.get(user, "key")).to eq "value"
+    end
+  end
+
+  context "#get" do
+    it "calls .get with the user" do
+      described_class.expects(:get).with(user, "key").returns("value")
+      expect(profile.send(:get, "key")).to eq "value"
+    end
+  end
+
+  context ".set" do
+    it "saves the value for a key and returns it" do
+      value = described_class.set(user, "key", "value")
+      expect(value).to eq "value"
+      expect(described_class.get(user, "key")).to eq "value"
+    end
+  end
+
+  context "#set" do
+    it "calls .set with the user" do
+      profile
+      described_class.expects(:set).with(user, "key", "value").returns("value")
+      expect(profile.send(:set, "key", "value")).to eq "value"
+    end
+  end
 end
diff --git a/spec/models/group_mapping_spec.rb b/spec/models/group_mapping_spec.rb
index 1c40b79..c11925c 100644
--- a/spec/models/group_mapping_spec.rb
+++ b/spec/models/group_mapping_spec.rb
@@ -3,9 +3,7 @@ require_relative '../iam_helper'
 describe MozillaIAM::GroupMapping do
   it 'should be destroyed when associated group is destroyed' do
     group = Fabricate(:group)
-    mapping = MozillaIAM::GroupMapping.new(iam_group_name: 'iam_group',
-                                 authoritative: false,
-                                 group: group)
+    mapping = MozillaIAM::GroupMapping.new(iam_group_name: 'iam_group', group: group)
     mapping.save!
     mapping.reload
 
diff --git a/spec/mozilla_iam_spec.rb b/spec/mozilla_iam_spec.rb
index 073c5c1..9982edc 100644
--- a/spec/mozilla_iam_spec.rb
+++ b/spec/mozilla_iam_spec.rb
@@ -15,7 +15,6 @@ describe MozillaIAM do
 
     before do
       MozillaIAM::GroupMapping.new(iam_group_name: 'iam_group',
-                                   authoritative: false,
                                    group: group).save!
       TopicUser.change(user.id, topic.id, notification_level: TopicUser.notification_levels[:watching])
       user.custom_fields['mozilla_iam_uid'] = uid
@@ -24,7 +23,7 @@ describe MozillaIAM do
     end
 
     context 'when user in correct IAM group' do
-      before { stub_api_users_request(uid, groups: ['iam_group']) }
+      before { stub_management_api_profile_request(uid, groups: ['iam_group']) }
 
       it 'refreshes the user profile' do
         PostAlerter.post_created(reply)
@@ -52,7 +51,7 @@ describe MozillaIAM do
     end
 
     context 'when user removed from IAM group' do
-      before { stub_api_users_request(uid, groups: []) }
+      before { stub_management_api_profile_request(uid, groups: []) }
 
       it 'refreshes the user profile' do
         PostAlerter.post_created(reply)
diff --git a/spec/serializers/admin_detailed_user_serializer_spec.rb b/spec/serializers/admin_detailed_user_serializer_spec.rb
new file mode 100644
index 0000000..430cbc8
--- /dev/null
+++ b/spec/serializers/admin_detailed_user_serializer_spec.rb
@@ -0,0 +1,28 @@
+require_relative '../iam_helper'
+
+describe AdminDetailedUserSerializer do
+  let(:user) { Fabricate(:user) }
+  let(:json) { AdminDetailedUserSerializer.new(user, scope: Guardian.new, root:false).as_json }
+
+  describe "#mozilla_iam" do
+    it "should contain 'mozilla_iam' prefixed custom fields" do
+      mozilla_iam_one = 'Some IAM data'
+      mozilla_iam_two = 'Some more IAM data'
+
+      user.custom_fields['mozilla_iam_one'] = mozilla_iam_one
+      user.custom_fields['mozilla_iam_two'] = mozilla_iam_two
+      user.save
+
+      mozilla_iam = json[:mozilla_iam]
+      expect(mozilla_iam['one']).to eq(mozilla_iam_one)
+      expect(mozilla_iam['two']).to eq(mozilla_iam_two)
+    end
+
+    it "shouldn't contain non-'mozilla_iam' prefixed custom fields" do
+      user.custom_fields['other_custom_fields'] = 'some data'
+      user.save
+
+      expect(json[:mozilla_iam]).to be_empty
+    end
+  end
+end
diff --git a/spec/support/iam_helpers.rb b/spec/support/iam_helpers.rb
index da09c95..dd974ce 100644
--- a/spec/support/iam_helpers.rb
+++ b/spec/support/iam_helpers.rb
@@ -32,6 +32,10 @@ module IAMHelpers
       .to_return(status: 200, body: create_jwks)
   end
 
+  def create_jwt(payload, header)
+    JWT.encode(payload, private_key, 'RS256', header)
+  end
+
   def create_id_token(user, additional_payload = {}, additional_header = {})
     payload = {
       name: user[:name],
@@ -48,7 +52,7 @@ module IAMHelpers
       kid: 'the_best_key'
     }.merge(additional_header)
 
-    JWT.encode(payload, private_key, 'RS256', header_fields)
+    create_jwt(payload, header_fields)
   end
 
   def create_uid(username)
@@ -71,13 +75,13 @@ module IAMHelpers
     authenticate_with_id_token create_id_token(user)
   end
 
-  def stub_oauth_token_request
+  def stub_oauth_token_request(aud)
     stub_jwks_request
 
     payload = {
       sub: 'the_best_client_id@clients',
       iss: 'https://auth.mozilla.auth0.com/',
-      aud: 'https://auth.mozilla.auth0.com/api/v2/',
+      aud: aud,
       exp: Time.now.to_i + 7.days,
       iat: Time.now.to_i
     }
@@ -93,10 +97,17 @@ module IAMHelpers
       .to_return(status: 200, body: body)
   end
 
-  def stub_api_users_request(uid, app_metadata)
-    stub_oauth_token_request
+  def stub_people_api_profile_request(uid, profile)
+    stub_oauth_token_request('https://person-api.sso.mozilla.com')
 
-    stub_request(:get, "https://auth.mozilla.auth0.com/api/v2/users/#{uid}?fields=app_metadata")
-      .to_return(status: 200, body: MultiJson.dump(app_metadata: app_metadata))
+    stub_request(:get, "https://uhbz4h3wa8.execute-api.us-west-2.amazonaws.com/prod/profile/#{uid}")
+      .to_return(status: 200, body: MultiJson.dump(body: MultiJson.dump(profile)))
+  end
+
+  def stub_management_api_profile_request(uid, profile)
+    stub_oauth_token_request('https://auth.mozilla.auth0.com/api/v2/')
+
+    stub_request(:get, "https://auth.mozilla.auth0.com/api/v2/users/#{uid}")
+      .to_return(status: 200, body: MultiJson.dump(app_metadata: profile))
   end
 end