;; ==========================================================================
;; test-orchestration.sx — Tests for orchestration.sx Phase 7c + 7d
;;
;; Requires: test-framework.sx loaded first.
;; Platform functions mocked by test runner:
;;   now-ms, log-info, log-warn, execute-action, try-rerender-page
;; ==========================================================================


;; --------------------------------------------------------------------------
;; 1. page-data-cache — basic cache operations
;; --------------------------------------------------------------------------

(defsuite "page-data-cache"

  (deftest "cache-key bare page name"
    (assert-equal "my-page" (page-data-cache-key "my-page" nil)))

  (deftest "cache-key with params"
    (let ((key (page-data-cache-key "my-page" {"id" "42"})))
      (assert-equal "my-page:id=42" key)))

  (deftest "cache-set then get"
    (let ((key "test-cache-1"))
      (page-data-cache-set key {"items" (list 1 2 3)})
      (let ((result (page-data-cache-get key)))
        (assert-equal (list 1 2 3) (get result "items")))))

  (deftest "cache miss returns nil"
    (assert-nil (page-data-cache-get "nonexistent-key"))))


;; --------------------------------------------------------------------------
;; 2. optimistic-cache-update — predicted mutation with snapshot
;; --------------------------------------------------------------------------

(defsuite "optimistic-cache-update"

  (deftest "applies mutator to cached data"
    (let ((key "opt-test-1"))
      ;; Seed the cache
      (page-data-cache-set key {"count" 10})
      ;; Apply optimistic mutation
      (let ((predicted (optimistic-cache-update key
                         (fn (data) (merge data {"count" 11})))))
        (assert-equal 11 (get predicted "count")))))

  (deftest "updates cache with prediction"
    (let ((key "opt-test-2"))
      (page-data-cache-set key {"count" 5})
      (optimistic-cache-update key (fn (data) (merge data {"count" 6})))
      ;; Cache now has predicted value
      (let ((cached (page-data-cache-get key)))
        (assert-equal 6 (get cached "count")))))

  (deftest "returns nil when no cached data"
    (let ((result (optimistic-cache-update "no-such-key"
                    (fn (data) (merge data {"x" 1})))))
      (assert-nil result))))


;; --------------------------------------------------------------------------
;; 3. optimistic-cache-revert — restore from snapshot
;; --------------------------------------------------------------------------

(defsuite "optimistic-cache-revert"

  (deftest "reverts to original data"
    (let ((key "revert-test-1"))
      (page-data-cache-set key {"count" 10})
      (optimistic-cache-update key (fn (data) (merge data {"count" 99})))
      ;; Cache now has 99
      (assert-equal 99 (get (page-data-cache-get key) "count"))
      ;; Revert
      (let ((restored (optimistic-cache-revert key)))
        (assert-equal 10 (get restored "count"))
        ;; Cache is back to original
        (assert-equal 10 (get (page-data-cache-get key) "count")))))

  (deftest "returns nil when no snapshot"
    (assert-nil (optimistic-cache-revert "never-mutated"))))


;; --------------------------------------------------------------------------
;; 4. optimistic-cache-confirm — discard snapshot
;; --------------------------------------------------------------------------

(defsuite "optimistic-cache-confirm"

  (deftest "confirm clears snapshot"
    (let ((key "confirm-test-1"))
      (page-data-cache-set key {"val" "a"})
      (optimistic-cache-update key (fn (data) (merge data {"val" "b"})))
      ;; Confirm — accepts the optimistic value
      (optimistic-cache-confirm key)
      ;; Revert should now return nil (no snapshot)
      (assert-nil (optimistic-cache-revert key))
      ;; Cache still has optimistic value
      (assert-equal "b" (get (page-data-cache-get key) "val")))))


;; --------------------------------------------------------------------------
;; 5. offline-is-online? / offline-set-online! — connectivity tracking
;; --------------------------------------------------------------------------

(defsuite "offline-connectivity"

  (deftest "initially online"
    (assert-true (offline-is-online?)))

  (deftest "set offline"
    (offline-set-online! false)
    (assert-false (offline-is-online?)))

  (deftest "set back online"
    (offline-set-online! true)
    (assert-true (offline-is-online?))))


;; --------------------------------------------------------------------------
;; 6. offline-queue-mutation — queue entries when offline
;; --------------------------------------------------------------------------

(defsuite "offline-queue-mutation"

  (deftest "queues an entry"
    ;; Seed cache so optimistic update works
    (let ((key (page-data-cache-key "notes" nil)))
      (page-data-cache-set key {"items" (list "a" "b")})
      (let ((entry (offline-queue-mutation "add-note"
                     {"text" "c"}
                     "notes" nil
                     (fn (data) (merge data {"items" (list "a" "b" "c")})))))
        (assert-equal "add-note" (get entry "action"))
        (assert-equal "pending" (get entry "status")))))

  (deftest "pending count increases"
    ;; Previous test queued 1 entry; count should be >= 1
    (assert-true (> (offline-pending-count) 0))))


;; --------------------------------------------------------------------------
;; 7. offline-aware-mutation — routes by connectivity
;; --------------------------------------------------------------------------

(defsuite "offline-aware-mutation"

  (deftest "when online calls submit-mutation path"
    (offline-set-online! true)
    (let ((key (page-data-cache-key "test-page" nil)))
      (page-data-cache-set key {"v" 1})
      ;; This will trigger execute-action (mocked) which calls success cb
      (let ((status nil))
        (offline-aware-mutation "test-page" nil "do-thing" {"x" 1}
          (fn (data) (merge data {"v" 2}))
          (fn (s) (set! status s)))
        ;; Mock execute-action calls success immediately
        (assert-equal "confirmed" status))))

  (deftest "when offline queues mutation"
    (offline-set-online! false)
    (let ((key (page-data-cache-key "test-page-2" nil)))
      (page-data-cache-set key {"v" 1})
      (let ((status nil))
        (offline-aware-mutation "test-page-2" nil "do-thing" {"x" 1}
          (fn (data) (merge data {"v" 2}))
          (fn (s) (set! status s)))
        (assert-equal "queued" status)))
    ;; Clean up: go back online
    (offline-set-online! true)))