Hailey
faae20939e
smoother basic caching prep cache somewhat works backup other files android impl blegh lets go touchup add prefetch to js use caching
59 lines
1.7 KiB
Swift
59 lines
1.7 KiB
Swift
import Foundation
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import AVKit
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import CryptoKit
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class PlayerItemManager {
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static let shared = PlayerItemManager()
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private var prefetchQueue: [String] = []
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func getItem(source: String) -> (AVPlayerItem, Bool)? {
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let path = createPath(source)
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if FileManager.default.fileExists(atPath: path.path) {
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return (AVPlayerItem(url: path), true)
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} else if let url = URL(string: source) {
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return (AVPlayerItem(url: url), false)
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}
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return nil
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}
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func saveToCache(source: String) {
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guard let sourceUrl = URL(string: source) else {
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return
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}
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let path = createPath(sourceUrl.absoluteString)
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let downloadTask = URLSession.shared.downloadTask(with:sourceUrl) { tempLocalURL, response, error in
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if let tempLocalURL = tempLocalURL, error == nil {
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try? FileManager.default.moveItem(at: tempLocalURL, to: path)
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}
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}
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downloadTask.resume()
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}
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private func getHash(_ source: String) -> String {
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let data = Data(source.utf8)
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let hash = Insecure.SHA1.hash(data: data)
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return hash.map { String(format: "%02hhx", $0)}.joined()
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}
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private func getGifsDirectory() -> URL {
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let paths = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)
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var cacheDir = paths[0]
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cacheDir = cacheDir.appendingPathComponent("gifs", isDirectory: true)
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if !FileManager.default.fileExists(atPath: cacheDir.path) {
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try? FileManager.default.createDirectory(at: cacheDir, withIntermediateDirectories: false)
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}
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return cacheDir
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}
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private func createPath(_ source: String) -> URL {
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let hash = getHash(source)
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var gifsDir = getGifsDirectory()
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return gifsDir.appendingPathComponent("\(hash).mp4", isDirectory: false)
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}
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}
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