56 lines
2.1 KiB
Swift
56 lines
2.1 KiB
Swift
import Foundation
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@MainActor
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public final class LaunchHistory {
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private struct Usage {
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var count: Int
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var lastLaunch: Date
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}
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private static let storageKey = "applicationLaunchHistory"
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private let defaults: UserDefaults
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private let now: () -> Date
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private var usage: [URL: Usage] = [:]
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public init(defaults: UserDefaults = .standard, now: @escaping () -> Date = Date.init) {
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self.defaults = defaults
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self.now = now
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for (identifier, value) in defaults.dictionary(forKey: Self.storageKey) ?? [:] {
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guard let url = URL(string: identifier), url.isFileURL,
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let record = value as? [String: Any],
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let count = record["count"] as? Int, count > 0,
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let lastLaunch = record["lastLaunch"] as? Date,
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lastLaunch.timeIntervalSinceReferenceDate.isFinite else { continue }
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usage[url] = Usage(count: count, lastLaunch: lastLaunch)
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}
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}
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public func recordLaunch(of application: Application) {
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let timestamp = now()
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var record = usage[application.id] ?? Usage(count: 0, lastLaunch: timestamp)
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if record.count < Int.max { record.count += 1 }
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record.lastLaunch = timestamp
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usage[application.id] = record
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var saved: [String: [String: Any]] = [:]
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saved.reserveCapacity(usage.count)
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for (url, record) in usage {
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saved[url.absoluteString] = ["count": record.count, "lastLaunch": record.lastLaunch]
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}
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defaults.set(saved, forKey: Self.storageKey)
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}
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public func suggestions(in applications: [Application]) -> [Application] {
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applications.sorted { lhs, rhs in
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let left = usage[lhs.id]
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let right = usage[rhs.id]
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let leftCount = left?.count ?? 0
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let rightCount = right?.count ?? 0
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if leftCount != rightCount { return leftCount > rightCount }
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if let left, let right, left.lastLaunch != right.lastLaunch {
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return left.lastLaunch > right.lastLaunch
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}
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return alphabetical(lhs, rhs)
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}
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}
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}
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