chore: import upstream snapshot with attribution

2026-07-13 12:22:33 +08:00
commit fc4fcbab58
1848 changed files with 472303 additions and 0 deletions
@@ -0,0 +1,66 @@
+import Foundation
+
+enum CodexRateWindowNormalizer {
+    static func normalize(
+        primary: RateWindow?,
+        secondary: RateWindow?)
+        -> (primary: RateWindow?, secondary: RateWindow?)
+    {
+        switch (primary, secondary) {
+        case let (.some(primaryWindow), .some(secondaryWindow)):
+            switch (self.role(for: primaryWindow), self.role(for: secondaryWindow)) {
+            case (.session, .weekly), (.session, .unknown), (.unknown, .weekly):
+                (primaryWindow, secondaryWindow)
+            case (.weekly, .session), (.weekly, .unknown):
+                (secondaryWindow, primaryWindow)
+            default:
+                (primaryWindow, secondaryWindow)
+            }
+        case let (.some(primaryWindow), .none):
+            switch role(for: primaryWindow) {
+            case .weekly:
+                (nil, primaryWindow)
+            case .session, .unknown:
+                (primaryWindow, nil)
+            }
+        case let (.none, .some(secondaryWindow)):
+            switch self.role(for: secondaryWindow) {
+            case .session, .unknown:
+                (secondaryWindow, nil)
+            case .weekly:
+                (nil, secondaryWindow)
+            }
+        case (.none, .none):
+            (nil, nil)
+        }
+    }
+
+    private enum WindowRole {
+        case session
+        case weekly
+        case unknown
+    }
+
+    private static func role(for window: RateWindow) -> WindowRole {
+        switch window.windowMinutes {
+        case 300:
+            .session
+        case 10080:
+            .weekly
+        default:
+            .unknown
+        }
+    }
+}
+
+#if DEBUG
+extension CodexRateWindowNormalizer {
+    static func _normalizeForTesting(
+        primary: RateWindow?,
+        secondary: RateWindow?)
+        -> (primary: RateWindow?, secondary: RateWindow?)
+    {
+        self.normalize(primary: primary, secondary: secondary)
+    }
+}
+#endif