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Feature/bg fetch #1303
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Feature/bg fetch #1303
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8595441
Add background refresh using BackgroundTask api
charliescheer eeb1d8e
Updated earliest background refresh to 30 minutes
charliescheer 3ed393f
Updated refresh to simply wakeup SN and let simperium sync
charliescheer 6d08985
Updated background refresh time
charliescheer f8409c0
Moved BG Fetch to its own file
charliescheer 43250c5
Added timeouts for background refresh
charliescheer 8e71635
Removed retain cycle on bg.finishrefresh
charliescheer 3e5b1e1
Updated background refresh as a stored property in app delegate
charliescheer 466e734
Removed finished variable from refresh manager
charliescheer 22a114a
Added a method to cancel pending BG tasks if SN enters the foreground
charliescheer 4442d55
Updated refresh timer method to onSimperiumChange
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| import Foundation | ||
| import BackgroundTasks | ||
|
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| class BackgroundRefreshManager: NSObject { | ||
| private var timer: Timer? { | ||
| didSet { | ||
| oldValue?.invalidate() | ||
| } | ||
| } | ||
|
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| private var handler: (()->Void)? | ||
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| private func refreshTimer() { | ||
| // If refresh is not running there will be no handler | ||
| guard handler != nil else { | ||
| return | ||
| } | ||
| NSLog("Refresh Timer Called") | ||
| timer = Timer.scheduledTimer(timeInterval: Constants.timerTimeOut, target: self, selector: #selector(finishRefresh), userInfo: nil, repeats: false) | ||
| } | ||
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| @objc | ||
| private func finishRefresh() { | ||
| guard let handler = handler else { | ||
| return | ||
| } | ||
| NSLog("Finish Refresh Called") | ||
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| handler() | ||
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| self.handler = nil | ||
| self.timer = nil | ||
| } | ||
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| @objc | ||
| func onSimperiumChange() { | ||
| refreshTimer() | ||
| } | ||
| } | ||
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| @available(iOS 13.0, *) | ||
| extension BackgroundRefreshManager { | ||
| // MARK: - Background Fetch | ||
| // | ||
| @objc | ||
| func registerBackgroundRefreshTask() { | ||
| NSLog("Registered background task with identifier \(Constants.bgTaskIdentifier)") | ||
| BGTaskScheduler.shared.register(forTaskWithIdentifier: Constants.bgTaskIdentifier, using: .main) { task in | ||
| guard let task = task as? BGAppRefreshTask else { | ||
| return | ||
| } | ||
| self.handleAppRefresh(task: task) | ||
| } | ||
| } | ||
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| private func handleAppRefresh(task: BGAppRefreshTask) { | ||
| NSLog("Did fire handle app refresh") | ||
| handler = { | ||
| task.setTaskCompleted(success: true) | ||
| } | ||
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| task.expirationHandler = { [weak self] in | ||
| self?.finishRefresh() | ||
| } | ||
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| NSLog("Background refresh intiated") | ||
| scheduleAppRefresh() | ||
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| refreshTimer() | ||
| } | ||
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| @objc | ||
| func scheduleAppRefresh() { | ||
| guard BuildConfiguration.current == .debug else { | ||
| return | ||
| } | ||
|
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| NSLog("Background refresh scheduled") | ||
| let request = BGAppRefreshTaskRequest(identifier: Constants.bgTaskIdentifier) | ||
| request.earliestBeginDate = Date(timeIntervalSinceNow: Constants.earliestBeginDate) | ||
| do { | ||
| try BGTaskScheduler.shared.submit(request) | ||
| NSLog("Background refresh submitted") | ||
| } catch { | ||
| print("Couldn't schedule app refersh: \(error)") | ||
| } | ||
| } | ||
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| @objc | ||
| func cancelPendingRefreshTasks() { | ||
| BGTaskScheduler.shared.cancel(taskRequestWithIdentifier: Constants.bgTaskIdentifier) | ||
| } | ||
| } | ||
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| private struct Constants { | ||
| static let earliestBeginDate = TimeInterval(60) //30 minutes | ||
| static let bundleIdentifier = Bundle.main.bundleIdentifier ?? "com.codality.NotationalFlow" | ||
| static let bgTaskIdentifier = bundleIdentifier + ".refresh" | ||
| static let timerTimeOut = TimeInterval(8) | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,5 @@ | ||
| import Foundation | ||
| import BackgroundTasks | ||
|
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| // MARK: - Initialization | ||
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