47 lines
1.6 KiB
Swift
47 lines
1.6 KiB
Swift
//
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// PlayerTimeUtils.swift
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// Audiobookshelf
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//
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// Created by Ron Heft on 9/20/22.
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//
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import Foundation
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class PlayerTimeUtils {
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private init() {}
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static func calcSeekBackTime(currentTime: TimeInterval, lastPlayedMs: Double?) -> TimeInterval {
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let sinceLastPlayed = timeSinceLastPlayed(lastPlayedMs)
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let timeToSeekBack = timeToSeekBackForSinceLastPlayed(sinceLastPlayed)
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let currentTimeAfterSeekBack = currentTime.advanced(by: -timeToSeekBack)
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return max(currentTimeAfterSeekBack, 0)
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}
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static internal func timeSinceLastPlayed(_ lastPlayedMs: Double?) -> TimeInterval? {
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guard let lastPlayedMs = lastPlayedMs else { return nil }
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let lastPlayed = Date(timeIntervalSince1970: lastPlayedMs / 1000)
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return Date().timeIntervalSince(lastPlayed)
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}
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static internal func timeToSeekBackForSinceLastPlayed(_ sinceLastPlayed: TimeInterval?) -> TimeInterval {
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if isAutoRewindDisabled(){
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return 0
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}
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if let sinceLastPlayed = sinceLastPlayed {
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if sinceLastPlayed < 10 { return 0 } // 10s or less = no seekback
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else if sinceLastPlayed < 60 { return 3 } // 10s to 1m = jump back 3s
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else if sinceLastPlayed < 300 { return 10 } // 1m to 5m = jump back 10s
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else if sinceLastPlayed < 1800 { return 20 } // 5m to 30m = jump back 20s
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else { return 30 } // 30m and up = jump back 30s
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} else {
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return 0
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}
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}
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static internal func isAutoRewindDisabled() -> Bool {
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let deviceSettings = Database.shared.getDeviceSettings()
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return deviceSettings.disableAutoRewind
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}
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}
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