feat: add editable playback queue

2026-10-18 00:15:05 +02:00
parent d4704af442
commit ce903e2367
10 changed files with 510 additions and 33 deletions
@@ -0,0 +1,71 @@
+import Foundation
+
+@main
+struct PlaybackQueueChecks {
+    static func require(_ condition: @autoclosure () -> Bool, _ message: String) {
+        if !condition() { fatalError("FAIL: " + message) }
+    }
+
+    static func file(_ name: String) -> URL {
+        URL(fileURLWithPath: "/queue-check/" + name + ".mp4")
+    }
+
+    static func main() {
+        let first = file("Episode1"), second = file("Episode2"), tenth = file("Episode10")
+        var queue = PlaybackQueue()
+        require(queue.items.isEmpty && queue.currentURL == nil && !queue.canPrevious && !queue.canNext,
+                "empty queue has no selection or navigation")
+        require(queue.advance(1) == nil && queue.advance(-1) == nil, "empty navigation is harmless")
+
+        queue.replace([tenth, second, first])
+        require(queue.items.map(\.url) == [first, second, tenth], "replace uses natural Episode2/Episode10 filename order")
+        require(queue.currentURL == first && !queue.canPrevious && queue.canNext, "replace selects first item")
+        let firstID = queue.currentID
+        require(queue.advance(-1) == nil && queue.currentID == firstID, "previous at start does not wrap or deselect")
+        require(queue.advance(1) == second && queue.canPrevious && queue.canNext, "next selects middle item")
+        require(queue.advance(1) == tenth && queue.canPrevious && !queue.canNext, "next selects final item")
+        let tenthID = queue.currentID
+        require(queue.advance(1) == nil && queue.currentID == tenthID, "next at end stops without wrapping")
+        require(queue.advance(-1) == second, "previous moves back one item")
+
+        let selected = queue.currentID!
+        queue.append([file("Episode20"), file("Episode3")])
+        require(queue.items.map(\.url) == [first, second, tenth, file("Episode3"), file("Episode20")],
+                "append naturally sorts the new batch without reordering existing items")
+        require(queue.currentID == selected && queue.currentURL == second, "append does not interrupt selection")
+        queue.move(fromOffsets: IndexSet(integer: 1), toOffset: queue.items.count)
+        require(queue.items.last?.id == selected && queue.currentID == selected && queue.currentURL == second,
+                "reordering preserves current item identity")
+        require(queue.canPrevious && !queue.canNext, "navigation follows reordered positions")
+        queue.move(fromOffsets: IndexSet([0, 1]), toOffset: queue.items.count)
+        require(queue.currentID == selected && queue.currentURL == second, "moving other items preserves current")
+
+        queue.replace([tenth, second, first])
+        queue.select(queue.items[1].id)
+        require(queue.currentURL == second, "explicit selection jumps to an item")
+        let current = queue.currentID
+        let unrelated = queue.items[0].id
+        require(queue.remove(unrelated) == nil && queue.currentID == current && queue.currentURL == second,
+                "removing another item does not request playback or change selection")
+        require(queue.remove(current!) == tenth && queue.currentURL == tenth,
+                "removing current selects the next remaining item")
+        require(queue.remove(queue.currentID!) == nil && queue.currentURL == nil && queue.items.isEmpty,
+                "removing final item stops and empties queue")
+
+        queue.replace([first, second, tenth])
+        queue.select(queue.items.last!.id)
+        require(queue.remove(queue.currentID!) == nil && queue.currentID == nil && queue.items.count == 2,
+                "removing current at end stops rather than jumping backward")
+        require(!queue.canPrevious && !queue.canNext, "stopped queue has no implicit selection")
+        queue.select(queue.items[0].id)
+        require(queue.currentURL == first, "remaining items can be explicitly selected after stopping")
+        queue.append([first])
+        require(Set(queue.items.map(\.id)).count == queue.items.count, "duplicate file entries have independent identities")
+        queue.replace([tenth])
+        require(queue.items.map(\.url) == [tenth] && queue.currentURL == tenth && !queue.canPrevious && !queue.canNext,
+                "replace discards previous queue and starts new selection")
+        queue.replace([])
+        require(queue.items.isEmpty && queue.currentID == nil, "empty replacement clears queue")
+        print("playback queue checks passed")
+    }
+}