LOOP-4769 Premeal Storage (#698)

* Store premeal activations in overrides storage

* Remove test of old behavior, and cleanup unused code

Author: ps2

Loop/Managers/TemporaryPresetsManager.swift

@@ -36,8 +36,10 @@ class TemporaryPresetsManager {
 
         scheduleOverride = overrideHistory.activeOverride(at: Date())
 
-        // TODO: Pre-meal is not stored in overrideHistory yet. https://tidepool.atlassian.net/browse/LOOP-4759
-        //preMealOverride = overrideHistory.preMealOverride
+        if scheduleOverride?.context == .preMeal {
+            preMealOverride = scheduleOverride
+            scheduleOverride = nil
+        }
 
         overrideIntentObserver = UserDefaults.appGroup?.observe(
             \.intentExtensionOverrideToSet,
@@ -79,6 +81,10 @@ class TemporaryPresetsManager {
                 return
             }
 
+            if scheduleOverride != nil {
+                preMealOverride = nil
+            }
+
             if let newValue = scheduleOverride, newValue.context == .preMeal {
                 preconditionFailure("The `scheduleOverride` field should not be used for a pre-meal target range override; use `preMealOverride` instead")
             }
@@ -98,10 +104,6 @@ class TemporaryPresetsManager {
                 }
             }
 
-            if scheduleOverride?.context == .legacyWorkout {
-                preMealOverride = nil
-            }
-
             notify(forChange: .preferences)
         }
     }
@@ -116,10 +118,12 @@ class TemporaryPresetsManager {
                 preconditionFailure("The `preMealOverride` field should be used only for a pre-meal target range override")
             }
 
-            if preMealOverride != nil, scheduleOverride?.context == .legacyWorkout {
+            if preMealOverride != nil {
                 scheduleOverride = nil
             }
 
+            overrideHistory.recordOverride(preMealOverride)
+
             notify(forChange: .preferences)
         }
     }

LoopTests/Managers/TemporaryPresetsManagerTests.swift

@@ -34,23 +34,20 @@ class TemporaryPresetsManagerTests: XCTestCase {
     }
 
     func testPreMealOverride() {
-        var settings = self.settings
         let preMealStart = Date()
         manager.enablePreMealOverride(at: preMealStart, for: 1 /* hour */ * 60 * 60)
         let actualPreMealRange = manager.effectiveGlucoseTargetRangeSchedule()?.quantityRange(at: preMealStart.addingTimeInterval(30 /* minutes */ * 60))
         XCTAssertEqual(preMealRange, actualPreMealRange)
     }
 
     func testPreMealOverrideWithPotentialCarbEntry() {
-        var settings = self.settings
         let preMealStart = Date()
         manager.enablePreMealOverride(at: preMealStart, for: 1 /* hour */ * 60 * 60)
         let actualRange = manager.effectiveGlucoseTargetRangeSchedule(presumingMealEntry: true)?.value(at: preMealStart.addingTimeInterval(30 /* minutes */ * 60))
         XCTAssertEqual(targetRange, actualRange)
     }
 
     func testScheduleOverride() {
-        var settings = self.settings
         let overrideStart = Date()
         let overrideTargetRange = DoubleRange(minValue: 130, maxValue: 150)
         let override = TemporaryScheduleOverride(
@@ -69,36 +66,7 @@ class TemporaryPresetsManagerTests: XCTestCase {
         XCTAssertEqual(actualOverrideRange, overrideTargetRange)
     }
 
-    func testBothPreMealAndScheduleOverride() {
-        var settings = self.settings
-        let preMealStart = Date()
-        manager.enablePreMealOverride(at: preMealStart, for: 1 /* hour */ * 60 * 60)
-
-        let overrideStart = Date()
-        let overrideTargetRange = DoubleRange(minValue: 130, maxValue: 150)
-        let override = TemporaryScheduleOverride(
-            context: .custom,
-            settings: TemporaryScheduleOverrideSettings(
-                unit: .milligramsPerDeciliter,
-                targetRange: overrideTargetRange
-            ),
-            startDate: overrideStart,
-            duration: .finite(3 /* hours */ * 60 * 60),
-            enactTrigger: .local,
-            syncIdentifier: UUID()
-        )
-        manager.scheduleOverride = override
-
-        let actualPreMealRange = manager.effectiveGlucoseTargetRangeSchedule()?.quantityRange(at: preMealStart.addingTimeInterval(30 /* minutes */ * 60))
-        XCTAssertEqual(actualPreMealRange, preMealRange)
-
-        // The pre-meal range should be projected into the future, despite the simultaneous schedule override
-        let preMealRangeDuringOverride = manager.effectiveGlucoseTargetRangeSchedule()?.quantityRange(at: preMealStart.addingTimeInterval(2 /* hours */ * 60 * 60))
-        XCTAssertEqual(preMealRangeDuringOverride, preMealRange)
-    }
-
     func testScheduleOverrideWithExpiredPreMealOverride() {
-        var settings = self.settings
         manager.preMealOverride = TemporaryScheduleOverride(
             context: .preMeal,
             settings: TemporaryScheduleOverrideSettings(targetRange: preMealRange),