Ayushya AmitabhandClaude Sonnet 5.5
469e57cca7
Swift implementation of the upload_service/download_service channels: background PUT/GET against the account's WebDAV root, one summary local notification per batch, Downloads visible in the Files app. Pure helpers covered by RunnerTests. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
54 lines
2.2 KiB
Swift
54 lines
2.2 KiB
Swift
import Foundation
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/// URL building for a Nextcloud account's WebDAV files root. Pure functions
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/// (no networking), so they're unit-tested in `RunnerTests`.
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enum WebDAV {
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/// `urlPathAllowed` minus "/", so a file name containing a slash-like
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/// character can't introduce an extra path segment.
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private static let segmentAllowed: CharacterSet = {
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var set = CharacterSet.urlPathAllowed
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set.remove(charactersIn: "/")
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return set
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}()
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static func encodeSegment(_ segment: String) -> String {
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segment.addingPercentEncoding(withAllowedCharacters: segmentAllowed) ?? segment
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}
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/// `<server>/remote.php/dav/files/<user>/<remotePath>` - [remotePath] is
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/// relative to the user's root, with or without a leading slash. A server
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/// installed under a sub-path (`https://host/nextcloud`) keeps it.
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static func fileURL(serverUrl: String, username: String, remotePath: String) -> URL? {
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var base = serverUrl
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while base.hasSuffix("/") { base.removeLast() }
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let segments = remotePath.split(separator: "/").map { encodeSegment(String($0)) }
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var url = base + "/remote.php/dav/files/" + encodeSegment(username)
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if !segments.isEmpty { url += "/" + segments.joined(separator: "/") }
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return URL(string: url)
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}
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/// `folder` + `name` with exactly one slash between them.
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static func join(_ folder: String, _ name: String) -> String {
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folder.hasSuffix("/") ? folder + name : folder + "/" + name
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}
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}
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enum LocalFiles {
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/// A URL in [directory] for [name] that doesn't exist yet: "a.txt", then
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/// "a (1).txt", "a (2).txt"... - so a second download of the same file
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/// never overwrites the first.
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static func uniqueURL(in directory: URL, name: String, fileManager: FileManager = .default) -> URL {
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let candidate = directory.appendingPathComponent(name)
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if !fileManager.fileExists(atPath: candidate.path) { return candidate }
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let ext = (name as NSString).pathExtension
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let stem = (name as NSString).deletingPathExtension
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var index = 1
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while true {
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let numbered = ext.isEmpty ? "\(stem) (\(index))" : "\(stem) (\(index)).\(ext)"
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let url = directory.appendingPathComponent(numbered)
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if !fileManager.fileExists(atPath: url.path) { return url }
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index += 1
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}
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}
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}
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