; Test recipe using S-expression slice-on construct
(recipe "sexp-slice-test"
  :version "1.0"
  :encoding (:codec "libx264" :crf 22 :preset "fast" :audio-codec "aac" :fps 30)

  (analyzer beats :path "../artdag-analyzers/beats/analyzer.py")

  ;; Import slice-on as a user-defined construct (not the built-in!)
  (construct slice-on :path "constructs/slice-on.sexp")

  (def video-a (source :path "monday.webm" :description "Video A"))
  (def video-b (source :path "new.webm" :description "Video B"))

  (def audio (-> (source :path "dizzy.mp3" :description "Audio input")
                 (segment :start 0 :duration 10)))

  (def beats-data (-> audio (analyze beats)))

  ;; Use the S-expression slice-on with a reducer function
  (def segments (slice-on beats-data
                  :init 0
                  :fn (fn [acc i start end]
                        {:source (nth (list video-a video-b) (mod acc 2))
                         :effects (list)
                         :acc (inc acc)})))

  (def synced-video (-> segments
                        (sequence :resize-mode :fit :priority :width)))

  (mux synced-video audio))