d282abd146
- 添加新的processing任务标识符到iOS配置文件 - 重构BackgroundTaskBridge支持不同任务类型(refresh/processing) - 增强后台任务日志记录和调试信息 - 修复任务类型配置不匹配问题 - 改进任务调度逻辑和错误处理机制 - 添加任务执行时间戳记录用于调试 - 移除notification-settings中未使用的AuthGuard依赖
621 lines
19 KiB
Swift
621 lines
19 KiB
Swift
//
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// BackgroundTaskBridge.swift
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// OutLive
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//
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// Native bridge responsible for scheduling and relaying iOS background tasks to the JS runtime.
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//
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import BackgroundTasks
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import Foundation
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import React
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import UIKit
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@objc(BackgroundTaskBridge)
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class BackgroundTaskBridge: RCTEventEmitter {
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private enum TaskKind: String {
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case processing
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case refresh
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}
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private let queue = DispatchQueue(label: "com.anonymous.digitalpilates.background.bridge", qos: .utility)
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private var hasListeners = false
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private var identifier: String?
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private var kind: TaskKind = .processing
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private var requiresNetworkConnectivity = false
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private var requiresExternalPower = false
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private var defaultDelay: TimeInterval = 60 * 30 // 30 minutes
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private var currentTask: BGTask?
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private let pendingTaskWaitTimeout: TimeInterval = 20
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private var waitingForJSListeners = false
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private var pendingTaskPayload: [String: Any]?
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private var pendingTaskTimeoutWorkItem: DispatchWorkItem?
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override init() {
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super.init()
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// 监听来自 AppDelegate 的后台任务通知
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(handleTaskNotification(_:)),
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name: NSNotification.Name("BackgroundTaskBridge.handleTask"),
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object: nil
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)
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}
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deinit {
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NotificationCenter.default.removeObserver(self)
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}
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override static func requiresMainQueueSetup() -> Bool {
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true
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}
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override func startObserving() {
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hasListeners = true
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queue.async { [weak self] in
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self?.emitPendingTaskIfPossible()
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}
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}
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override func stopObserving() {
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hasListeners = false
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}
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@objc
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private func handleTaskNotification(_ notification: Notification) {
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guard #available(iOS 13.0, *),
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let userInfo = notification.userInfo,
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let task = userInfo["task"] as? BGTask else {
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return
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}
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NSLog("[BackgroundTaskBridge] 收到来自 AppDelegate 的后台任务")
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handle(task: task)
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}
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override func supportedEvents() -> [String]! {
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[
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"BackgroundTaskBridge.execute",
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"BackgroundTaskBridge.expire"
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]
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}
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@objc
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func configure(
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_ options: NSDictionary,
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resolver: @escaping RCTPromiseResolveBlock,
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rejecter: @escaping RCTPromiseRejectBlock
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) {
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guard #available(iOS 13.0, *) else {
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rejecter(
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"BACKGROUND_TASK_UNAVAILABLE",
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"BGTaskScheduler requires iOS 13 or later.",
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nil
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)
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return
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}
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guard let identifier = options["identifier"] as? String,
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!identifier.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty else {
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rejecter("INVALID_IDENTIFIER", "A non-empty identifier is required.", nil)
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return
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}
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let taskTypeRaw = (options["taskType"] as? String)?.lowercased()
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let taskKind = TaskKind(rawValue: taskTypeRaw ?? "") ?? .processing
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let requiresNetwork = (options["requiresNetworkConnectivity"] as? Bool) ?? false
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let requiresPower = (options["requiresExternalPower"] as? Bool) ?? false
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let defaultDelaySeconds = (options["defaultDelay"] as? NSNumber)?.doubleValue
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queue.async { [weak self] in
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guard let self else { return }
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self.identifier = identifier
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self.kind = taskKind
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self.requiresNetworkConnectivity = requiresNetwork
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self.requiresExternalPower = requiresPower
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if let delay = defaultDelaySeconds, delay > 0 {
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self.defaultDelay = delay
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}
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do {
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try self.scheduleTask(after: self.defaultDelay)
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resolver([
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"identifier": identifier,
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"scheduled": true,
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"defaultDelay": self.defaultDelay
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])
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} catch {
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rejecter("BACKGROUND_TASK_ERROR", error.localizedDescription, error)
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}
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}
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}
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@objc
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func schedule(
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_ options: NSDictionary,
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resolver: @escaping RCTPromiseResolveBlock,
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rejecter: @escaping RCTPromiseRejectBlock
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) {
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guard #available(iOS 13.0, *) else {
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rejecter(
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"BACKGROUND_TASK_UNAVAILABLE",
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"BGTaskScheduler requires iOS 13 or later.",
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nil
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)
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return
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}
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guard let identifier = identifier else {
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rejecter("NOT_CONFIGURED", "Call configure() before scheduling.", nil)
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return
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}
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let delay = (options["delay"] as? NSNumber)?.doubleValue
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let effectiveDelay = (delay?.isFinite == true && delay! >= 0) ? delay! : defaultDelay
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queue.async { [weak self] in
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guard let self else { return }
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do {
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try self.scheduleTask(after: effectiveDelay)
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resolver([
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"identifier": identifier,
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"scheduled": true,
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"delay": effectiveDelay
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])
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} catch {
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rejecter("BACKGROUND_TASK_ERROR", error.localizedDescription, error)
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}
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}
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}
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@objc
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func complete(
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_ success: NSNumber,
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rescheduleAfter: NSNumber?,
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resolver: @escaping RCTPromiseResolveBlock,
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rejecter: @escaping RCTPromiseRejectBlock
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) {
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guard #available(iOS 13.0, *) else {
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rejecter(
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"BACKGROUND_TASK_UNAVAILABLE",
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"BGTaskScheduler requires iOS 13 or later.",
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nil
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)
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return
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}
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let shouldRescheduleAfter = rescheduleAfter?.doubleValue ?? defaultDelay
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let completionSuccess = success.boolValue
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queue.async { [weak self] in
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guard let self else { return }
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if let task = self.currentTask {
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task.setTaskCompleted(success: completionSuccess)
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self.currentTask = nil
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}
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do {
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try self.scheduleTask(after: shouldRescheduleAfter)
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resolver([
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"rescheduled": true,
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"delay": shouldRescheduleAfter,
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"success": completionSuccess
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])
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} catch {
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rejecter("BACKGROUND_TASK_ERROR", error.localizedDescription, error)
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}
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}
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}
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@objc
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func cancelAll(
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_ resolver: @escaping RCTPromiseResolveBlock,
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rejecter: @escaping RCTPromiseRejectBlock
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) {
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guard #available(iOS 13.0, *) else {
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rejecter(
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"BACKGROUND_TASK_UNAVAILABLE",
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"BGTaskScheduler requires iOS 13 or later.",
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nil
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)
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return
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}
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queue.async {
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BGTaskScheduler.shared.cancelAllTaskRequests()
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resolver(["cancelled": true])
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}
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}
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@objc
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func getPendingRequests(
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_ resolver: @escaping RCTPromiseResolveBlock,
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rejecter: @escaping RCTPromiseRejectBlock
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) {
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guard #available(iOS 13.0, *) else {
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rejecter(
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"BACKGROUND_TASK_UNAVAILABLE",
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"BGTaskScheduler requires iOS 13 or later.",
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nil
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)
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return
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}
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BGTaskScheduler.shared.getPendingTaskRequests { [weak self] requests in
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guard let self else { return }
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let mapped = requests
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.filter { request in
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guard let identifier = self.identifier else {
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return true
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}
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return request.identifier == identifier
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}
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.map { request -> [String: Any] in
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var payload: [String: Any] = [
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"identifier": request.identifier
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]
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if let date = request.earliestBeginDate {
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payload["earliestBegin"] = date.timeIntervalSince1970 * 1000
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} else {
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payload["earliestBegin"] = NSNull()
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}
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if let processingRequest = request as? BGProcessingTaskRequest {
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payload["requiresNetworkConnectivity"] = processingRequest.requiresNetworkConnectivity
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payload["requiresExternalPower"] = processingRequest.requiresExternalPower
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payload["type"] = "processing"
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} else {
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payload["type"] = "refresh"
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}
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return payload
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}
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resolver(mapped)
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}
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}
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@objc
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func backgroundRefreshStatus(
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_ resolver: @escaping RCTPromiseResolveBlock,
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rejecter: @escaping RCTPromiseRejectBlock
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) {
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guard Thread.isMainThread else {
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DispatchQueue.main.async { [weak self] in
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self?.backgroundRefreshStatus(resolver, rejecter: rejecter)
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}
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return
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}
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let status = UIApplication.shared.backgroundRefreshStatus
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switch status {
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case .available:
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resolver("available")
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case .denied:
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resolver("denied")
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case .restricted:
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resolver("restricted")
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@unknown default:
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resolver("unknown")
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}
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}
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@objc
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func simulateLaunch(
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_ resolver: @escaping RCTPromiseResolveBlock,
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rejecter: @escaping RCTPromiseRejectBlock
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) {
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#if targetEnvironment(simulator)
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// 在模拟器上，给出更友好的提示
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NSLog("[BackgroundTaskBridge] ⚠️ 后台任务在模拟器上不完全支持")
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NSLog("[BackgroundTaskBridge] 请在真机上测试后台任务功能")
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rejecter(
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"SIMULATOR_NOT_SUPPORTED",
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"后台任务功能在模拟器上不完全支持。请在真机上测试。\n注意：这不是错误，是 iOS 模拟器的正常限制。",
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nil
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)
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return
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#else
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guard hasListeners else {
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NSLog("[BackgroundTaskBridge] ⚠️ 没有 JS 监听器注册")
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rejecter(
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"NO_LISTENERS",
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"没有 JS 监听器注册后台事件。请确保应用已完全初始化。",
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nil
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)
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return
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}
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NSLog("[BackgroundTaskBridge] 模拟触发后台任务...")
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DispatchQueue.main.async { [weak self] in
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guard let self else { return }
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self.sendEvent(
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withName: "BackgroundTaskBridge.execute",
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body: [
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"identifier": self.identifier ?? "simulated",
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"timestamp": Date().timeIntervalSince1970 * 1000,
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"simulated": true
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]
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)
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NSLog("[BackgroundTaskBridge] ✅ 模拟后台任务已触发")
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resolver(["simulated": true])
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}
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#endif
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}
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@objc
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func markJSReady(
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_ resolver: @escaping RCTPromiseResolveBlock,
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rejecter: @escaping RCTPromiseRejectBlock
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) {
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queue.async { [weak self] in
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guard let self else { return }
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let hadPendingTask = self.waitingForJSListeners && self.pendingTaskPayload != nil
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self.emitPendingTaskIfPossible()
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resolver([
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"pendingTaskFlushed": hadPendingTask
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])
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}
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}
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// MARK: - Private helpers
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@available(iOS 13.0, *)
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private func scheduleTask(after delay: TimeInterval) throws {
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guard let identifier else {
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throw NSError(
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domain: "BackgroundTaskBridge",
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code: 1,
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userInfo: [NSLocalizedDescriptionKey: "Identifier is missing. Configure the bridge first."]
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)
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}
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// 先检查待处理的任务
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BGTaskScheduler.shared.getPendingTaskRequests { requests in
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let existingTasks = requests.filter { $0.identifier == identifier }
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NSLog("[BackgroundTaskBridge] 当前待处理任务数: \(existingTasks.count)")
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}
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// 取消之前的任务请求，避免重复调度
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BGTaskScheduler.shared.cancel(taskRequestWithIdentifier: identifier)
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NSLog("[BackgroundTaskBridge] 已取消之前的任务请求: \(identifier)")
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// 根据任务类型选择合适的请求类
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// processing 类型使用 BGProcessingTaskRequest，fetch 类型使用 BGAppRefreshTaskRequest
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let request: BGTaskRequest
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switch kind {
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case .processing:
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request = BGProcessingTaskRequest(identifier: identifier)
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case .refresh:
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request = BGAppRefreshTaskRequest(identifier: identifier)
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}
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// 设置最早开始时间
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// 注意：实际执行时间由系统决定，可能会延迟
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// 系统通常会在设备空闲、网络连接良好、电量充足时执行
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if let appRefreshRequest = request as? BGAppRefreshTaskRequest {
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appRefreshRequest.earliestBeginDate = Date(timeIntervalSinceNow: delay)
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} else if let processingRequest = request as? BGProcessingTaskRequest {
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processingRequest.earliestBeginDate = Date(timeIntervalSinceNow: delay)
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processingRequest.requiresNetworkConnectivity = requiresNetworkConnectivity
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processingRequest.requiresExternalPower = requiresExternalPower
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}
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do {
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try BGTaskScheduler.shared.submit(request)
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let dateFormatter = DateFormatter()
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dateFormatter.dateFormat = "HH:mm:ss"
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let earliestTime = dateFormatter.string(from: request.earliestBeginDate ?? Date())
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NSLog("[BackgroundTaskBridge] ✅ 后台任务已调度成功")
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NSLog("[BackgroundTaskBridge] - 标识符: \(identifier)")
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NSLog("[BackgroundTaskBridge] - 延迟: \(Int(delay))秒 (\(Int(delay/60))分钟)")
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NSLog("[BackgroundTaskBridge] - 最早执行时间: \(earliestTime)")
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NSLog("[BackgroundTaskBridge] - 注意: 实际执行时间由系统决定")
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} catch {
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NSLog("[BackgroundTaskBridge] ❌ 调度后台任务失败: \(error.localizedDescription)")
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// 打印详细错误信息
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if let bgError = error as NSError? {
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NSLog("[BackgroundTaskBridge] - 错误域: \(bgError.domain)")
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NSLog("[BackgroundTaskBridge] - 错误码: \(bgError.code)")
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NSLog("[BackgroundTaskBridge] - 错误信息: \(bgError.localizedDescription)")
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}
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throw error
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}
|
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}
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|
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@available(iOS 13.0, *)
|
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private func handle(task: BGTask) {
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queue.async { [weak self] in
|
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guard let self else { return }
|
||
|
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self.currentTask = task
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NSLog("[BackgroundTaskBridge] ===== 开始处理后台任务 =====")
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NSLog("[BackgroundTaskBridge] 任务标识符: \(task.identifier)")
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NSLog("[BackgroundTaskBridge] 任务类型: \(type(of: task))")
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NSLog("[BackgroundTaskBridge] 当前时间: \(Date().description)")
|
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|
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if self.identifier == nil {
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self.identifier = task.identifier
|
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NSLog("[BackgroundTaskBridge] 使用任务标识符初始化 identifier: \(task.identifier)")
|
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}
|
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|
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// 设置任务过期处理器
|
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task.expirationHandler = { [weak self] in
|
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guard let self else { return }
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NSLog("[BackgroundTaskBridge] 后台任务即将过期")
|
||
self.queue.async {
|
||
if let currentTask = self.currentTask {
|
||
currentTask.setTaskCompleted(success: false)
|
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}
|
||
self.currentTask = nil
|
||
|
||
// 即使任务过期，也要重新调度下一次任务
|
||
self.rescheduleTask()
|
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}
|
||
|
||
guard self.hasListeners else { return }
|
||
|
||
DispatchQueue.main.async {
|
||
self.sendEvent(
|
||
withName: "BackgroundTaskBridge.expire",
|
||
body: [
|
||
"identifier": self.identifier ?? "",
|
||
"timestamp": Date().timeIntervalSince1970 * 1000
|
||
]
|
||
)
|
||
}
|
||
}
|
||
|
||
let payload: [String: Any] = [
|
||
"identifier": self.identifier ?? task.identifier,
|
||
"timestamp": Date().timeIntervalSince1970 * 1000
|
||
]
|
||
|
||
guard self.hasListeners else {
|
||
NSLog("[BackgroundTaskBridge] 暂无 JS 监听器，等待 JS 初始化 (最多 \(Int(self.pendingTaskWaitTimeout)) 秒)")
|
||
self.cacheTaskForLater(payload: payload)
|
||
return
|
||
}
|
||
|
||
NSLog("[BackgroundTaskBridge] 准备发送后台任务执行事件到JS")
|
||
NSLog("[BackgroundTaskBridge] hasListeners: \(self.hasListeners)")
|
||
self.emitTaskToJS(payload: payload)
|
||
NSLog("[BackgroundTaskBridge] ✅ 事件已发送到JS层")
|
||
}
|
||
}
|
||
|
||
@available(iOS 13.0, *)
|
||
private func executeDefaultTaskAndReschedule() {
|
||
waitingForJSListeners = false
|
||
pendingTaskPayload = nil
|
||
pendingTaskTimeoutWorkItem?.cancel()
|
||
pendingTaskTimeoutWorkItem = nil
|
||
|
||
// 执行默认的后台任务逻辑（当没有JS监听器时）
|
||
NSLog("[BackgroundTaskBridge] 执行默认后台任务逻辑")
|
||
|
||
// 这里可以添加一些基本的任务逻辑，比如：
|
||
// 1. 检查应用状态
|
||
// 2. 更新本地存储
|
||
// 3. 准备下次任务的数据
|
||
|
||
// 完成当前任务
|
||
if let currentTask = self.currentTask {
|
||
currentTask.setTaskCompleted(success: true)
|
||
self.currentTask = nil
|
||
}
|
||
|
||
// 重新调度下一次任务
|
||
self.rescheduleTask()
|
||
}
|
||
|
||
@available(iOS 13.0, *)
|
||
private func rescheduleTask() {
|
||
guard let identifier = self.identifier else {
|
||
NSLog("[BackgroundTaskBridge] 无法重新调度任务：标识符为空")
|
||
return
|
||
}
|
||
|
||
// 先取消之前的任务请求，避免重复
|
||
BGTaskScheduler.shared.cancel(taskRequestWithIdentifier: identifier)
|
||
|
||
// 使用与配置时相同的任务类型
|
||
let request: BGTaskRequest
|
||
switch self.kind {
|
||
case .processing:
|
||
request = BGProcessingTaskRequest(identifier: identifier)
|
||
if let processingRequest = request as? BGProcessingTaskRequest {
|
||
processingRequest.earliestBeginDate = Date(timeIntervalSinceNow: self.defaultDelay)
|
||
processingRequest.requiresNetworkConnectivity = self.requiresNetworkConnectivity
|
||
processingRequest.requiresExternalPower = self.requiresExternalPower
|
||
}
|
||
case .refresh:
|
||
request = BGAppRefreshTaskRequest(identifier: identifier)
|
||
if let appRefreshRequest = request as? BGAppRefreshTaskRequest {
|
||
appRefreshRequest.earliestBeginDate = Date(timeIntervalSinceNow: self.defaultDelay)
|
||
}
|
||
}
|
||
|
||
do {
|
||
try BGTaskScheduler.shared.submit(request)
|
||
NSLog("[BackgroundTaskBridge] 已重新调度后台任务，标识符: \(identifier)，延迟: \(self.defaultDelay)秒")
|
||
} catch {
|
||
NSLog("[BackgroundTaskBridge] 重新调度后台任务失败: \(error.localizedDescription)")
|
||
|
||
// 如果调度失败，尝试使用更短的延迟时间重试
|
||
let retryDelay = min(self.defaultDelay * 0.5, 5 * 60) // 最多5分钟
|
||
request.earliestBeginDate = Date(timeIntervalSinceNow: retryDelay)
|
||
|
||
do {
|
||
try BGTaskScheduler.shared.submit(request)
|
||
NSLog("[BackgroundTaskBridge] 使用重试延迟重新调度后台任务成功: \(retryDelay)秒")
|
||
} catch {
|
||
NSLog("[BackgroundTaskBridge] 重试调度后台任务也失败: \(error.localizedDescription)")
|
||
}
|
||
}
|
||
}
|
||
|
||
private func cacheTaskForLater(payload: [String: Any]) {
|
||
waitingForJSListeners = true
|
||
pendingTaskPayload = payload
|
||
|
||
pendingTaskTimeoutWorkItem?.cancel()
|
||
|
||
NSLog("[BackgroundTaskBridge] 缓存后台任务等待JS监听器...")
|
||
NSLog("[BackgroundTaskBridge] 等待超时时间: \(Int(pendingTaskWaitTimeout))秒")
|
||
|
||
let timeoutItem = DispatchWorkItem { [weak self] in
|
||
guard let self else { return }
|
||
guard self.waitingForJSListeners else { return }
|
||
|
||
NSLog("[BackgroundTaskBridge] ⚠️ 等待 JS 监听器超时，执行默认处理")
|
||
self.waitingForJSListeners = false
|
||
self.pendingTaskPayload = nil
|
||
self.pendingTaskTimeoutWorkItem = nil
|
||
self.executeDefaultTaskAndReschedule()
|
||
}
|
||
|
||
pendingTaskTimeoutWorkItem = timeoutItem
|
||
queue.asyncAfter(deadline: .now() + pendingTaskWaitTimeout, execute: timeoutItem)
|
||
NSLog("[BackgroundTaskBridge] 已设置超时计时器")
|
||
}
|
||
|
||
private func emitPendingTaskIfPossible() {
|
||
guard hasListeners else { return }
|
||
guard waitingForJSListeners, let payload = pendingTaskPayload else { return }
|
||
|
||
pendingTaskTimeoutWorkItem?.cancel()
|
||
pendingTaskTimeoutWorkItem = nil
|
||
waitingForJSListeners = false
|
||
pendingTaskPayload = nil
|
||
|
||
NSLog("[BackgroundTaskBridge] JS 监听器已就绪，发送缓存的后台任务事件")
|
||
emitTaskToJS(payload: payload)
|
||
}
|
||
|
||
private func emitTaskToJS(payload: [String: Any]) {
|
||
DispatchQueue.main.async { [weak self] in
|
||
guard let self else { return }
|
||
NSLog("[BackgroundTaskBridge] 正在发送事件到JS层...")
|
||
self.sendEvent(
|
||
withName: "BackgroundTaskBridge.execute",
|
||
body: payload
|
||
)
|
||
NSLog("[BackgroundTaskBridge] ✅ 事件发送成功")
|
||
}
|
||
}
|
||
}
|