* Add /stats endpoint for articles, opened only to Pro users
* Add analytics to article stats page
* Add stats button to the article page and test stats page
* Use proper auth chain before checking parameters
* Refactor AnalyticsController
* Add a bunch of test and rewrite reactions counts with a single query
* Add tests for follows totals
* Use round and add more refactoring
* Add tests to group by day to fallback during refactoring
* Use group by to calculate comments count by day
* Use group by to calculate follows count by day
* Use group by to calculate reactions stats by day
* Use group by to calculate page_views stats by day
* Move calculations per day back in the cached block
* Add a few comments and a little bit of refactoring
* Add indexes (concurrently) for analytics
* Make tests more time robust
* Use a date range cache related to the requesting user or org
* Freezing time in UTC should help when tests are ran on time zones over the day line
* Remove explicit returns
* Page title is escaped, guard against that
* Move Analytics service spec in the proper place
* Use published scope for articles
* Fix variable name
* The sequencing in the union query matters
* Fix spec
* Restore a published: true condition
* This test is actually misleading due to the union
* Revert this change, not sure why it's not a relation
* Fix useless diff
* Add specs for single article functionality
* Add single article functionality
* Use article_id instead of single_article_id
* Add published: true when querying for one article
* Use article_id in specs oops
* Add basic tests for Analytics service
* User/Organization are always required
* Add some data to the test
* Use queries and date times
* Fix AnalyticsService interface in the controller
* s/HTTP_API_KEY/api-key
* Defend against nils and support datetime objects
* Update app/services/analytics_service.rb
Co-Authored-By: rhymes <rhymesete@gmail.com>
* Use SQL sum, not Rails sum
* Group average_read_time
* Use SQL, not Rails
* Use ISO date
* Fix specs
* Add API endpoints for analytics
* Remove comment and spacing
* Use proper time formatting
* Refactor and clean up some logic
* Add pro and org member traits
* Use shared examples for analytics API spec
* Add analytics authorization specs
* Remove accidental include Pundit
* Raise not_authorized for invalid requests
* Make attributes and time methods private
* Add custom UnauthorizedError
* Raise and use rescue_from to handle 4xx requests
* Enforce date parameters to follow a specific format
* Use current user to allow same origin requests
* Use custom headers and not params for token auth
* Default to current user for same origin requests
* Use correct boolean for choosing user
* Update tests to use request headers and add stricter tests
