import Foundation
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import AppKit
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// MARK: - Data Models
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struct AppInfo: Identifiable, Hashable {
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var id: URL { path }
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let name: String
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let path: URL
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let tags: [String]
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let bundleIdentifier: String?
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let icon: NSImage // Pre-loaded during background scan
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/// True if this is an Apple pre-installed app.
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var isAppleApp: Bool {
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if let bid = bundleIdentifier, bid.hasPrefix("com.apple.") { return true }
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return path.path.hasPrefix("/System/Applications/")
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}
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func hash(into hasher: inout Hasher) { hasher.combine(path) }
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static func == (lhs: AppInfo, rhs: AppInfo) -> Bool { lhs.path == rhs.path }
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}
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struct TagGroup: Identifiable {
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var id: String { name }
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let name: String
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let apps: [AppInfo]
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}
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// MARK: - Tag Color Mapping
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enum TagColor {
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static func nsColor(for index: Int) -> NSColor {
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switch index {
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case 0: return NSColor.systemGray
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case 1: return NSColor(red: 0.60, green: 0.60, blue: 0.62, alpha: 1.0)
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case 2: return NSColor(red: 0.38, green: 0.74, blue: 0.35, alpha: 1.0)
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case 3: return NSColor(red: 0.70, green: 0.45, blue: 0.79, alpha: 1.0)
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case 4: return NSColor(red: 0.30, green: 0.64, blue: 0.96, alpha: 1.0)
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case 5: return NSColor(red: 0.97, green: 0.83, blue: 0.29, alpha: 1.0)
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case 6: return NSColor(red: 0.99, green: 0.38, blue: 0.36, alpha: 1.0)
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case 7: return NSColor(red: 0.97, green: 0.58, blue: 0.27, alpha: 1.0)
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default: return NSColor.systemGray
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}
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}
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static let allIndices: [Int] = [0, 1, 2, 3, 4, 5, 6, 7]
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}
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// MARK: - App Scanner
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enum AppIndexer {
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static let searchPaths: [URL] = [
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URL(fileURLWithPath: "/Applications"),
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URL(fileURLWithPath: "/System/Applications"),
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FileManager.default.homeDirectoryForCurrentUser
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.appendingPathComponent("Applications")
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]
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/// Scan all standard locations. Tags are NOT read from Finder —
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/// they're annotated from TagDatabase by the caller.
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static func scan() -> [AppInfo] {
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var seen = Set<URL>()
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var apps: [AppInfo] = []
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for baseURL in searchPaths {
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guard let enumerator = FileManager.default.enumerator(
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at: baseURL,
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includingPropertiesForKeys: [.isDirectoryKey],
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options: [.skipsHiddenFiles, .skipsPackageDescendants]
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) else { continue }
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for case let url as URL in enumerator {
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guard url.pathExtension == "app" else { continue }
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guard !seen.contains(url) else { continue }
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seen.insert(url)
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let name = url.deletingPathExtension().lastPathComponent
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let icon = NSWorkspace.shared.icon(forFile: url.path)
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icon.size = NSSize(width: 96, height: 96)
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var bundleId: String? = nil
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if let bundle = Bundle(url: url) {
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bundleId = bundle.bundleIdentifier
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}
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apps.append(AppInfo(
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name: name, path: url, tags: [],
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bundleIdentifier: bundleId, icon: icon
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))
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}
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}
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return apps.sorted {
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$0.name.localizedStandardCompare($1.name) == .orderedAscending
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}
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}
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/// Group apps by their tags (from TagDatabase).
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/// Groups are sorted by tagOrder (user-defined), falling back to alpha.
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static func group(
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apps: [AppInfo],
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nameOverrides: [String: String] = [:],
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defaultGroupName: String = "Other",
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tagOrder: [String] = []
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) -> [TagGroup] {
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let macCategory = "Mac自带"
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var dict: [String: [AppInfo]] = [:]
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for app in apps {
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if app.tags.isEmpty {
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let bucket = app.isAppleApp ? macCategory : defaultGroupName
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dict[bucket, default: []].append(app)
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} else {
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for tag in app.tags {
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let displayName = nameOverrides[tag] ?? tag
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dict[displayName, default: []].append(app)
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}
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}
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}
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// Build sort index from tagOrder: lower index = appears first
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var orderIndex: [String: Int] = [:]
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for (i, name) in tagOrder.enumerated() {
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orderIndex[name] = i
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}
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return dict
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.sorted { lhs, rhs in
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if lhs.key == macCategory { return false }
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if rhs.key == macCategory { return true }
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if lhs.key == defaultGroupName { return false }
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if rhs.key == defaultGroupName { return true }
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// Use custom order if both are in tagOrder
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let li = orderIndex[lhs.key] ?? Int.max
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let ri = orderIndex[rhs.key] ?? Int.max
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if li != ri { return li < ri }
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return lhs.key.localizedStandardCompare(rhs.key) == .orderedAscending
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}
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.map { TagGroup(name: $0.key, apps: $0.value) }
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}
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}
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enum TagDatabase {
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// MARK: Storage types
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struct TagDef: Codable, Equatable {
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var color: Int
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}
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struct Store: Codable {
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var version: Int = 1
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var tags: [String: TagDef] = [:]
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var appTags: [String: [String]] = [:] // path → tag names
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var tagOrder: [String] = [] // display order; empty → alpha sort
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var migrated: Bool = false
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}
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// MARK: Paths
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private static var storeDir: URL {
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let dir = FileManager.default.homeDirectoryForCurrentUser
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.appendingPathComponent("Library/Application Support/Apptag")
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try? FileManager.default.createDirectory(at: dir, withIntermediateDirectories: true)
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return dir
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}
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static var storeURL: URL { storeDir.appendingPathComponent("tags.json") }
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// MARK: Load / Save
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static func load() -> Store {
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guard let data = try? Data(contentsOf: storeURL),
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let store = try? JSONDecoder().decode(Store.self, from: data)
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else { return Store() }
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return store
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}
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static func save(_ store: Store) {
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guard let data = try? JSONEncoder().encode(store) else { return }
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try? data.write(to: storeURL, options: .atomic)
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}
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// MARK: Migration (first launch: import Finder tags)
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/// Run once on first launch. Reads Finder tags from all scanned apps
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/// and seeds the local database. Also auto-assigns "Mac自带" to Apple apps.
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static func migrateFromFinderIfNeeded(apps: [AppInfo]) -> Store {
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var store = load()
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guard !store.migrated else { return store }
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// Read Finder tags from each app
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for app in apps {
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let finderTags = readFinderTags(from: app.path)
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guard !finderTags.isEmpty else { continue }
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store.appTags[app.path.path] = finderTags.map { $0.name }
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for (name, color) in finderTags {
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if store.tags[name] == nil {
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store.tags[name] = TagDef(color: color)
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}
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}
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}
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// Auto-assign "Mac自带" tag to Apple apps
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for app in apps where app.isAppleApp {
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var current = store.appTags[app.path.path] ?? []
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if !current.contains("Mac自带") {
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current.append("Mac自带")
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store.appTags[app.path.path] = current
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}
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}
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if store.tags["Mac自带"] == nil {
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store.tags["Mac自带"] = TagDef(color: 1) // gray
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}
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store.migrated = true
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save(store)
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return store
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}
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/// Read Finder tags (name, color) from a single .app bundle.
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/// Only used during one-time migration.
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private static func readFinderTags(from url: URL) -> [(name: String, color: Int)] {
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// Read tag names via NSURL resource values
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guard let values = try? url.resourceValues(forKeys: [.tagNamesKey]),
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let tagNames = values.tagNames, !tagNames.isEmpty
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else { return [] }
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// Read tag colors from xattr
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let xattrName = "com.apple.metadata:_kMDItemUserTags"
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let path = url.path
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let size = getxattr(path, xattrName, nil, 0, 0, 0)
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guard size > 0 else {
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return tagNames.map { ($0, 0) }
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}
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var buffer = [UInt8](repeating: 0, count: size)
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guard getxattr(path, xattrName, &buffer, size, 0, 0) == size else {
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return tagNames.map { ($0, 0) }
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}
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let data = Data(buffer)
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guard let plist = try? PropertyListSerialization.propertyList(
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from: data, options: [], format: nil
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) as? [String] else {
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return tagNames.map { ($0, 0) }
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}
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// Build name→color map from xattr entries
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var colorMap: [String: Int] = [:]
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for entry in plist {
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let parts = entry.components(separatedBy: "\n")
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guard !parts[0].isEmpty else { continue }
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let c = (parts.count >= 2) ? (Int(parts[1]) ?? 0) : 0
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colorMap[parts[0]] = (0...7).contains(c) ? c : 0
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}
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return tagNames.map { ($0, colorMap[$0] ?? 0) }
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}
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// MARK: Export / Import
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static func exportTo(_ url: URL) throws {
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try FileManager.default.copyItem(at: storeURL, to: url)
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}
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static func importFrom(_ url: URL) throws -> Store {
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let data = try Data(contentsOf: url)
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let store = try JSONDecoder().decode(Store.self, from: data)
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save(store)
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return store
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}
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}
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// MARK: - Tag Editor (CRUD against local TagDatabase)
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enum TagEditor {
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// MARK: Read
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/// Get tag→color map from the database.
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static func tagColors() -> [String: Int] {
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let store = TagDatabase.load()
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return store.tags.mapValues { $0.color }
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}
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/// Tag names in display order. Falls back to alpha sort if no custom order.
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static func orderedTagNames() -> [String] {
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let store = TagDatabase.load()
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let ordered = store.tagOrder.filter { store.tags[$0] != nil }
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let remaining = store.tags.keys.filter { !ordered.contains($0) }.sorted()
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return ordered + remaining
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}
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/// Persist a new tag display order.
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static func reorderTags(_ names: [String]) {
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var store = TagDatabase.load()
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store.tagOrder = names
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TagDatabase.save(store)
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}
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/// Create a new tag definition (no app assignments yet).
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static func createTag(_ name: String, color: Int) {
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var store = TagDatabase.load()
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guard store.tags[name] == nil else { return }
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store.tags[name] = TagDatabase.TagDef(color: color)
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if !store.tagOrder.contains(name) { store.tagOrder.append(name) }
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TagDatabase.save(store)
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}
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/// Annotate scanned apps with tags from the database.
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static func annotate(apps: [AppInfo]) -> [AppInfo] {
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let store = TagDatabase.load()
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return apps.map { app in
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let appTags = store.appTags[app.path.path] ?? []
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return AppInfo(
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name: app.name, path: app.path, tags: appTags,
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bundleIdentifier: app.bundleIdentifier, icon: app.icon
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)
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}
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}
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// MARK: Write
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/// Assign a tag to multiple apps. Preserves existing tags.
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static func assignTag(_ tag: String, color: Int, to paths: [String]) {
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var store = TagDatabase.load()
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// Ensure tag definition exists
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if store.tags[tag] == nil {
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store.tags[tag] = TagDatabase.TagDef(color: color)
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// New tag: append to display order
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if !store.tagOrder.contains(tag) { store.tagOrder.append(tag) }
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}
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for path in paths {
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var current = store.appTags[path] ?? []
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if !current.contains(tag) {
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current.append(tag)
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store.appTags[path] = current
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}
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}
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TagDatabase.save(store)
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}
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/// Remove a tag from specific apps.
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static func removeTag(_ tag: String, from paths: [String]) {
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var store = TagDatabase.load()
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for path in paths {
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store.appTags[path]?.removeAll { $0 == tag }
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if store.appTags[path]?.isEmpty == true {
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store.appTags.removeValue(forKey: path)
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}
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}
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TagDatabase.save(store)
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}
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/// Rename a tag on all apps that have it.
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static func renameTag(from oldName: String, to newName: String) {
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var store = TagDatabase.load()
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// Update tag definition
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if let def = store.tags.removeValue(forKey: oldName) {
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store.tags[newName] = def
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}
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// Update all app assignments
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for (path, var tags) in store.appTags {
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if let idx = tags.firstIndex(of: oldName) {
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tags[idx] = newName
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store.appTags[path] = tags
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}
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}
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TagDatabase.save(store)
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}
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/// Delete a tag completely (from all apps and tag definitions).
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static func deleteTagCompletely(_ tag: String) {
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var store = TagDatabase.load()
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store.tags.removeValue(forKey: tag)
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store.tagOrder.removeAll { $0 == tag }
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for (path, var tags) in store.appTags {
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tags.removeAll { $0 == tag }
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if tags.isEmpty {
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store.appTags.removeValue(forKey: path)
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} else {
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store.appTags[path] = tags
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}
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}
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TagDatabase.save(store)
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}
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/// Set the color for a tag.
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static func setColor(_ color: Int, for tag: String) {
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var store = TagDatabase.load()
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store.tags[tag] = TagDatabase.TagDef(color: color)
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TagDatabase.save(store)
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}
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}
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