field_ios

In-the-field app for Radroots on iOS
git clone https://radroots.dev/git/field_ios.git
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TeraOpenedMedia.swift (1266B)

      1 import Foundation
      2 import Synchronization
      3 
      4 /// Owns the native originals until exactly one caller takes them for close.
      5 /// Immutable Rust handles retain their independent files through late FFI work.
      6 final class TeraOpenedMedia: Sendable {
      7   let handles: [TeraPreparedMediaHandle]
      8   private let files: Mutex<[FileHandle]>
      9 
     10   init(handles: [TeraPreparedMediaHandle], files: [FileHandle]) {
     11     self.handles = handles
     12     self.files = Mutex(files)
     13   }
     14 
     15   deinit {
     16     close()
     17   }
     18 
     19   func close() {
     20     let active = files.withLock { files in
     21       let active = files
     22       files.removeAll()
     23       return active
     24     }
     25     // File I/O occurs outside the short ownership-transfer critical section.
     26     for file in active {
     27       try? file.close()
     28     }
     29   }
     30 }
     31 
     32 extension TeraOpenedMedia {
     33   static func open(_ values: [TeraPreparedMedia], using media: (any TeraAddMediaHandling)?) async throws -> TeraOpenedMedia {
     34     guard !values.isEmpty else { return TeraOpenedMedia(handles: [], files: []) }
     35     guard let media else {
     36       throw TeraRuntimeFailure.local(
     37         operation: "add.media.open",
     38         code: "ios.add.media_unavailable",
     39         safeMessage: "Prepared photos are unavailable on this device."
     40       )
     41     }
     42     return try await media.open(values)
     43   }
     44 }