crossmate

A collaborative crossword app for iOS
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ImportService.swift (1277B)

      1 import Foundation
      2 
      3 @MainActor
      4 final class ImportService {
      5     private let store: GameStore
      6     private let driveMonitor: DriveMonitor
      7 
      8     init(store: GameStore, driveMonitor: DriveMonitor) {
      9         self.store = store
     10         self.driveMonitor = driveMonitor
     11     }
     12 
     13     func importGame(from url: URL) -> UUID? {
     14         guard ["xd", "puz"].contains(url.pathExtension.lowercased()) else { return nil }
     15 
     16         let needsAccess = url.startAccessingSecurityScopedResource()
     17         defer {
     18             if needsAccess {
     19                 url.stopAccessingSecurityScopedResource()
     20             }
     21         }
     22 
     23         let source: String
     24         do {
     25             switch url.pathExtension.lowercased() {
     26             case "xd":
     27                 source = try String(contentsOf: url, encoding: .utf8)
     28             case "puz":
     29                 source = try PUZToXDConverter.convert(puzData: Data(contentsOf: url))
     30             default:
     31                 return nil
     32             }
     33         } catch {
     34             return nil
     35         }
     36 
     37         if driveMonitor.containerAvailable {
     38             try? driveMonitor.importFile(from: url)
     39         }
     40 
     41         if let existing = store.findGameID(matching: source) {
     42             return existing
     43         }
     44         return try? store.createGame(from: source)
     45     }
     46 }