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@@ -0,0 +1,161 @@
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+import Combine
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+import EventKit
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+import Swinject
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+
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+protocol CalendarManager {
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+ func requestAccessIfNeeded() -> AnyPublisher<Bool, Never>
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+ func calendarIDs() -> [String]
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+ var currentCalendarID: String? { get set }
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+ func createEvent(for glucose: BloodGlucose?, delta: Int?)
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+}
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+
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+final class BaseCalendarManager: CalendarManager, Injectable {
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+ private lazy var eventStore: EKEventStore = { EKEventStore() }()
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+
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+ @Persisted(key: "CalendarManager.currentCalendarID") var currentCalendarID: String? = nil
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+ @Injected() private var settingsManager: SettingsManager!
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+
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+ init(resilver: Resolver) {
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+ injectServices(resilver)
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+ }
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+
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+ func requestAccessIfNeeded() -> AnyPublisher<Bool, Never> {
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+ Future { promise in
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+ let status = EKEventStore.authorizationStatus(for: .event)
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+ switch status {
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+ case .notDetermined:
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+ EKEventStore().requestAccess(to: .event) { granted, error in
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+ if let error = error {
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+ warning(.service, "Calendar access not granded", error: error)
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+ }
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+ promise(.success(granted))
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+ }
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+ case .denied,
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+ .restricted:
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+ promise(.success(false))
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+ case .authorized:
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+ promise(.success(true))
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+ @unknown default:
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+ warning(.service, "Unknown calendar access status")
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+ promise(.success(false))
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+ }
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+ }.eraseToAnyPublisher()
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+ }
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+
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+ func calendarIDs() -> [String] {
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+ EKEventStore().calendars(for: .event).map(\.title)
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+ }
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+
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+ func createEvent(for glucose: BloodGlucose?, delta: Int?) {
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+ guard settingsManager.settings.useCalendar ?? false else { return }
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+
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+ guard let calendar = currentCalendar else { return }
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+
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+ deleteAllEvents(in: calendar)
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+
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+ guard let glucose = glucose, let glucoseValue = glucose.glucose else { return }
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+
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+ // create an event now
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+ let event = EKEvent(eventStore: eventStore)
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+
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+ let glucoseText = glucoseFormatter
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+ .string(from: Double(
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+ settingsManager.settings.units == .mmolL ?glucoseValue
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+ .asMmolL : Decimal(glucoseValue)
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+ ) as NSNumber)!
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+ let directionText = glucose.direction?.symbol ?? "↔︎"
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+ let deltaText = delta
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+ .map {
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+ deltaFormatter
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+ .string(from: Double(settingsManager.settings.units == .mmolL ? $0.asMmolL : Decimal($0)) as NSNumber)!
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+ } ?? "--"
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+
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+ let title = glucoseText + " " + directionText + " " + deltaText
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+
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+ event.title = title
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+ event.notes = "FreeAPS X"
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+ event.startDate = Date()
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+ event.endDate = Date(timeIntervalSinceNow: 60 * 10)
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+ event.calendar = calendar
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+
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+ do {
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+ try eventStore.save(event, span: .thisEvent)
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+ } catch {
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+ warning(.service, "Cannot create calendar event", error: error)
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+ }
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+ }
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+
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+ var currentCalendar: EKCalendar? {
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+ let calendars = eventStore.calendars(for: .event)
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+ guard calendars.isNotEmpty else { return nil }
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+ return calendars.first { $0.title == self.currentCalendarID }
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+ }
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+
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+ private func deleteAllEvents(in calendar: EKCalendar) {
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+ let predicate = eventStore.predicateForEvents(
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+ withStart: Date(timeIntervalSinceNow: -24 * 3600),
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+ end: Date(),
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+ calendars: [calendar]
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+ )
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+
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+ let events = eventStore.events(matching: predicate)
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+
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+ for event in events {
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+ do {
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+ try eventStore.remove(event, span: .thisEvent)
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+ } catch {
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+ warning(.service, "Cannot remove calendar events", error: error)
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+ }
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+ }
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+ }
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+
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+ private var glucoseFormatter: NumberFormatter {
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+ let formatter = NumberFormatter()
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+ formatter.numberStyle = .decimal
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+ formatter.maximumFractionDigits = 0
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+ if settingsManager.settings.units == .mmolL {
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+ formatter.minimumFractionDigits = 1
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+ formatter.maximumFractionDigits = 1
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+ }
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+ return formatter
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+ }
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+
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+ private var deltaFormatter: NumberFormatter {
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+ let formatter = NumberFormatter()
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+ formatter.numberStyle = .decimal
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+ formatter.maximumFractionDigits = 2
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+ formatter.positivePrefix = "+"
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+ return formatter
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+ }
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+}
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+
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+extension BloodGlucose.Direction {
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+ var symbol: String {
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+ switch self {
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+ case .tripleUp:
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+ return "↑↑↑"
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+ case .doubleUp:
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+ return "↑↑"
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+ case .singleUp:
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+ return "↑"
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+ case .fortyFiveUp:
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+ return "↗︎"
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+ case .flat:
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+ return "→"
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+ case .fortyFiveDown:
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+ return "↘︎"
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+ case .singleDown:
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+ return "↓"
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+ case .doubleDown:
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+ return "↓↓"
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+ case .tripleDown:
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+ return "↓↓↓"
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+ case .none:
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+ return "↔︎"
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+ case .notComputable:
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+ return "↔︎"
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+ case .rateOutOfRange:
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+ return "↔︎"
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+ }
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+ }
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+}
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Jon B.M