Add experimental Swift-native Sure Insights app (#3134)

* Add Swift-native Sure app

* Fix push subscriptions schema for CI

* Address native app review feedback

* Address remaining native app review feedback

* Use Flutter app logo for native icon

* Honor insight notification preferences and locale

---------

Co-authored-by: Juan Jose Mata <2v8shcb6pz@privaterelay.appleid.com>
Co-authored-by: sure-admin <sure-admin@splashblot.com>

test/controllers/api/v1/push_subscriptions_controller_test.rb

@@ -0,0 +1,160 @@
+require "test_helper"
+
+class Api::V1::PushSubscriptionsControllerTest < ActionDispatch::IntegrationTest
+  setup do
+    @user = users(:family_admin)
+    key = ApiKey.generate_secure_key
+    @api_key = ApiKey.create!(
+      user: @user,
+      name: "Native push test",
+      key: key,
+      scopes: [ "read_write" ],
+      source: "mobile"
+    )
+    @headers = api_headers(@api_key)
+    @token = "ab" * 32
+  end
+
+  test "registers and refreshes an APNs token" do
+    assert_difference "PushSubscription.count", 1 do
+      post api_v1_push_subscriptions_url,
+           params: { token: @token, environment: "sandbox", platform: "ios" },
+           headers: @headers,
+           as: :json
+    end
+
+    assert_response :created
+    subscription = PushSubscription.find_by!(token: @token)
+    assert_equal @user, subscription.user
+    assert_equal "sandbox", subscription.environment
+
+    assert_no_difference "PushSubscription.count" do
+      post api_v1_push_subscriptions_url,
+           params: { token: @token, environment: "production", platform: "ios" },
+           headers: @headers,
+           as: :json
+    end
+    assert_equal "production", subscription.reload.environment
+  end
+
+  test "requires a read write API key" do
+    read_key_value = ApiKey.generate_secure_key
+    read_key = ApiKey.create!(
+      user: @user,
+      name: "Read-only native push test",
+      key: read_key_value,
+      scopes: [ "read" ],
+      source: "mobile"
+    )
+
+    post api_v1_push_subscriptions_url,
+         params: { token: @token, environment: "sandbox", platform: "ios" },
+         headers: api_headers(read_key),
+         as: :json
+
+    assert_response :forbidden
+  end
+
+  test "rejects malformed tokens" do
+    post api_v1_push_subscriptions_url,
+         params: { token: "not-a-device-token", environment: "sandbox", platform: "ios" },
+         headers: @headers,
+         as: :json
+
+    assert_response :unprocessable_entity
+  end
+
+  test "rejects an invalid APNs environment" do
+    post api_v1_push_subscriptions_url,
+         params: { token: @token, environment: "staging", platform: "ios" },
+         headers: @headers,
+         as: :json
+
+    assert_response :unprocessable_entity
+  end
+
+  test "normalizes APNs tokens before lookup and persistence" do
+    post api_v1_push_subscriptions_url,
+         params: { token: @token.upcase, environment: "sandbox", platform: "ios" },
+         headers: @headers,
+         as: :json
+
+    assert_response :created
+    assert PushSubscription.exists?(token: @token)
+
+    assert_no_difference "PushSubscription.count" do
+      post api_v1_push_subscriptions_url,
+           params: { token: @token, environment: "sandbox", platform: "ios" },
+           headers: @headers,
+           as: :json
+    end
+  end
+
+  test "does not transfer another user's token" do
+    other_user = users(:empty)
+    subscription = other_user.push_subscriptions.create!(
+      token: @token,
+      environment: "sandbox",
+      platform: "ios",
+      last_registered_at: Time.current
+    )
+
+    post api_v1_push_subscriptions_url,
+         params: { token: @token.upcase, environment: "production", platform: "ios" },
+         headers: @headers,
+         as: :json
+
+    assert_response :unprocessable_entity
+    assert_equal other_user, subscription.reload.user
+    assert_equal "sandbox", subscription.environment
+  end
+
+  test "returns a controlled response when concurrent token registration conflicts" do
+    PushSubscription.any_instance.stubs(:save!).raises(ActiveRecord::RecordNotUnique)
+
+    post api_v1_push_subscriptions_url,
+         params: { token: @token, environment: "sandbox", platform: "ios" },
+         headers: @headers,
+         as: :json
+
+    assert_response :unprocessable_entity
+    assert_equal "validation_error", response.parsed_body["error"]
+  end
+
+  test "removes the current user's token" do
+    subscription = @user.push_subscriptions.create!(
+      token: @token,
+      environment: "sandbox",
+      platform: "ios",
+      last_registered_at: Time.current
+    )
+
+    assert_difference "PushSubscription.count", -1 do
+      delete api_v1_push_subscription_url(subscription), headers: @headers
+    end
+
+    assert_response :no_content
+  end
+
+  test "does not remove another user's token" do
+    subscription = users(:empty).push_subscriptions.create!(
+      token: @token,
+      environment: "sandbox",
+      platform: "ios",
+      last_registered_at: Time.current
+    )
+
+    delete api_v1_push_subscription_url(subscription), headers: @headers
+
+    assert_response :not_found
+    assert PushSubscription.exists?(subscription.id)
+  end
+
+  test "requires authentication" do
+    post api_v1_push_subscriptions_url,
+         params: { token: @token, environment: "sandbox", platform: "ios" },
+         as: :json
+
+    assert_response :unauthorized
+  end
+end