add Sparkle appcast

Sources/Model/Updates/UpdateService.swift

@@ -1,160 +0,0 @@
-import Foundation
-
-struct ReleaseInfo: Identifiable {
-    let id = UUID()
-    let version: VersionNumber
-    let versionString: String
-    let notes: String
-    let downloadURL: URL
-    let releaseURL: URL
-    let prerelease: Bool
-}
-
-struct VersionNumber: Comparable, CustomStringConvertible {
-    let rawValue: String
-    private let components: [Int]
-
-    init(_ raw: String) {
-        self.rawValue = raw
-        self.components = raw
-            .split(separator: ".")
-            .map { Int($0) ?? 0 }
-    }
-
-    var description: String { rawValue }
-
-    static func < (lhs: VersionNumber, rhs: VersionNumber) -> Bool {
-        let maxCount = max(lhs.components.count, rhs.components.count)
-        for index in 0..<maxCount {
-            let left = index < lhs.components.count ? lhs.components[index] : 0
-            let right = index < rhs.components.count ? rhs.components[index] : 0
-            if left != right {
-                return left < right
-            }
-        }
-        return false
-    }
-}
-
-enum UpdateServiceError: LocalizedError {
-    case invalidResponse
-    case noReleasesAvailable
-    case missingDownloadAsset
-
-    var errorDescription: String? {
-        switch self {
-        case .invalidResponse:
-            return "The update server returned an invalid response."
-        case .noReleasesAvailable:
-            return "No releases are currently available."
-        case .missingDownloadAsset:
-            return "The release did not include downloadable artifacts."
-        }
-    }
-}
-
-struct UpdateService {
-    private struct APIRelease: Decodable {
-        struct Asset: Decodable {
-            let name: String
-            let browserDownloadURL: URL?
-
-            enum CodingKeys: String, CodingKey {
-                case name
-                case browserDownloadURL = "browser_download_url"
-            }
-        }
-
-        let tagName: String
-        let body: String?
-        let prerelease: Bool
-        let draft: Bool
-        let htmlURL: URL?
-        let createdAt: Date
-        let assets: [Asset]
-
-        enum CodingKeys: String, CodingKey {
-            case tagName = "tag_name"
-            case body
-            case prerelease
-            case draft
-            case htmlURL = "html_url"
-            case createdAt = "created_at"
-            case assets
-        }
-    }
-
-    private let baseURL = URL(string: "https://git.24unix.net/api/v1")!
-    private let owner = "tracer"
-    private let repo = "iKeyMon"
-    private let session: URLSession
-
-    init(session: URLSession = .shared) {
-        self.session = session
-    }
-
-    func fetchLatestRelease(includePrerelease: Bool) async throws -> ReleaseInfo {
-        let releasesURL = baseURL
-            .appendingPathComponent("repos")
-            .appendingPathComponent(owner)
-            .appendingPathComponent(repo)
-            .appendingPathComponent("releases")
-
-        var request = URLRequest(url: releasesURL)
-        request.addValue("application/json", forHTTPHeaderField: "Accept")
-
-        let (data, response) = try await session.data(for: request)
-        guard let httpResponse = response as? HTTPURLResponse,
-              200..<300 ~= httpResponse.statusCode else {
-            throw UpdateServiceError.invalidResponse
-        }
-
-        let decoder = JSONDecoder()
-        decoder.dateDecodingStrategy = .iso8601
-        let releases = try decoder.decode([APIRelease].self, from: data)
-
-        let filtered = releases
-            .filter { !$0.draft }
-            .filter { includePrerelease || !$0.prerelease }
-            .sorted(by: { $0.createdAt > $1.createdAt })
-
-        guard let release = filtered.first else {
-            throw UpdateServiceError.noReleasesAvailable
-        }
-
-        guard let asset = preferredAsset(from: release.assets),
-              let downloadURL = asset.browserDownloadURL else {
-            throw UpdateServiceError.missingDownloadAsset
-        }
-
-        let cleanTag = release.tagName.trimmingCharacters(in: .whitespacesAndNewlines)
-        let version = cleanTag.hasPrefix("v") ? String(cleanTag.dropFirst()) : cleanTag
-
-        return ReleaseInfo(
-            version: VersionNumber(version),
-            versionString: version,
-            notes: release.body ?? "",
-            downloadURL: downloadURL,
-            releaseURL: release.htmlURL ?? releasesURL,
-            prerelease: release.prerelease
-        )
-    }
-
-    private func preferredAsset(from assets: [APIRelease.Asset]) -> APIRelease.Asset? {
-        return assets
-            .sorted { lhs, rhs in
-                priority(for: lhs.name) > priority(for: rhs.name)
-            }
-            .first(where: { $0.browserDownloadURL != nil })
-    }
-
-    private func priority(for name: String) -> Int {
-        if name.lowercased().hasSuffix(".dmg") {
-            return 3
-        }
-        if name.lowercased().hasSuffix(".zip") {
-            return 2
-        }
-        return 1
-    }
-}