# app/jobs/training_watch_job.rb
class TrainingWatchJob < ApplicationJob
	queue_as :training_watch
	include GoodJob::ActiveJobExtensions::Concurrency
	
	good_job_control_concurrency_with(
		# Maximum number of unfinished jobs to allow with the concurrency key
		total_limit: 1,
		
		# Or, if more control is needed:
		# Maximum number of jobs with the concurrency key to be
		# concurrently enqueued (excludes performing jobs)
		enqueue_limit: 1,
		
		# Maximum number of jobs with the concurrency key to be
		# concurrently performed (excludes enqueued jobs)
		perform_limit: 1,
		
		# Note: Under heavy load, the total number of jobs may exceed the
		# sum of `enqueue_limit` and `perform_limit` because of race conditions
		# caused by imperfectly disjunctive states. If you need to constrain
		# the total number of jobs, use `total_limit` instead. See #378.
		
		# A unique key to be globally locked against.
		# Can be String or Lambda/Proc that is invoked in the context of the job.
		# Note: Arguments passed to #perform_later must be accessed through `arguments` method.
		key: -> { "Unique-TrainingWatchJob" }
	)
	def perform
		results = TrainingWatch::Checker.new.run!
		return if results.empty?
		
		email = ENV.fetch("TRAINING_WATCH_NOTIFY_EMAIL", "christoph@marzell.net")
		return if email.blank?
		
		TrainingWatchMailer.notify(email: email, results: results).deliver_now
	end
end