Valdemar Lorenzen
254 lines
12 KiB
Swift
254 lines
12 KiB
Swift
import AppKit
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import ConjureKit
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import Security
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@MainActor
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final class TranslationController: NSViewController, NSTextFieldDelegate, NSTextViewDelegate {
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private let keyField = NSSecureTextField()
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private let provider = NSPopUpButton()
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private let credentials = NSStackView()
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private var usesMyMemory: Bool { provider.indexOfSelectedItem == 0 }
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private let output = NSTextView()
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private let disclosure = NSTextField(wrappingLabelWithString: "")
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private let status = NSTextField(wrappingLabelWithString: "")
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private let translateButton = NSButton(title: "Translate", target: nil, action: nil)
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private var task: Task<Void, Never>?
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var input: (() -> String)?
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var closed: (() -> Void)?
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private static let credential: [String: Any] = [
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kSecClass as String: kSecClassGenericPassword,
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kSecAttrService as String: "Conjure.OpenAI",
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kSecAttrAccount as String: "translation",
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]
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override func loadView() {
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view = NSView()
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let title = NSTextField(labelWithString: "Conjure Translate · English → Japanese")
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title.font = .systemFont(ofSize: 13, weight: .semibold)
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let back = NSButton(title: "", target: self, action: #selector(goBack))
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back.image = IconStyle.symbol("chevron.left", for: title.font!)
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back.imageScaling = .scaleProportionallyDown
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back.isBordered = false
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back.contentTintColor = SunsetPalette.secondaryText
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back.setAccessibilityLabel("Back to applications")
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back.toolTip = "Back to applications (Escape)"
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let heading = NSStackView(views: [back, title, NSView()])
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heading.alignment = .centerY
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heading.spacing = 12
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provider.addItems(withTitles: ["MyMemory (no key)", "OpenAI · gpt-6-luna"])
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provider.selectItem(at: UserDefaults.standard.string(forKey: "translationProvider") == "openai" ? 1 : 0)
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provider.setAccessibilityLabel("Translation provider")
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provider.target = self
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provider.action = #selector(providerChanged)
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keyField.placeholderString = "OpenAI API key (saved in Keychain)"
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keyField.setAccessibilityLabel("OpenAI API key")
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keyField.delegate = self
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keyField.widthAnchor.constraint(greaterThanOrEqualToConstant: 220).isActive = true
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let save = NSButton(title: "Save Key", target: self, action: #selector(saveKey))
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let forget = NSButton(title: "Forget Key", target: self, action: #selector(forgetKey))
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for control in [keyField, save, forget] { credentials.addArrangedSubview(control) }
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credentials.distribution = .fill
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translateButton.target = self
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translateButton.action = #selector(translate)
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translateButton.keyEquivalent = "\r"
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translateButton.isBordered = false
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translateButton.font = .systemFont(ofSize: 12, weight: .medium)
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translateButton.contentTintColor = SunsetPalette.text
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translateButton.toolTip = "Translate the English input (Return). Escape returns to the launcher."
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let returnKey = ShortcutIndicator("↵")
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let actionPill = NSView()
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actionPill.wantsLayer = true
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actionPill.layer?.cornerRadius = 18
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actionPill.layer?.borderWidth = 0.5
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actionPill.layer?.borderColor = SunsetPalette.accent.withAlphaComponent(0.35).cgColor
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actionPill.layer?.backgroundColor = SunsetPalette.background.withAlphaComponent(0.25).cgColor
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for control in [translateButton, returnKey] {
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control.translatesAutoresizingMaskIntoConstraints = false
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actionPill.addSubview(control)
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}
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NSLayoutConstraint.activate([
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actionPill.heightAnchor.constraint(equalToConstant: 36),
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translateButton.leadingAnchor.constraint(equalTo: actionPill.leadingAnchor, constant: 14),
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translateButton.centerYAnchor.constraint(equalTo: actionPill.centerYAnchor),
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returnKey.leadingAnchor.constraint(equalTo: translateButton.trailingAnchor, constant: 8),
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returnKey.centerYAnchor.constraint(equalTo: actionPill.centerYAnchor),
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returnKey.trailingAnchor.constraint(equalTo: actionPill.trailingAnchor, constant: -12),
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])
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let footer = NSStackView(views: [NSView(), actionPill])
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footer.orientation = .horizontal
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footer.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(footer)
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output.isEditable = false
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output.isSelectable = true
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output.drawsBackground = false
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output.textColor = SunsetPalette.text
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output.font = .systemFont(ofSize: 20)
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output.setAccessibilityLabel("Japanese translation")
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output.delegate = self
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let scroll = NSScrollView()
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scroll.documentView = output
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scroll.hasVerticalScroller = true
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scroll.drawsBackground = false
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output.isVerticallyResizable = true
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output.autoresizingMask = [.width]
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output.textContainer?.widthTracksTextView = true
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disclosure.textColor = SunsetPalette.secondaryText
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disclosure.font = .systemFont(ofSize: 12)
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disclosure.setAccessibilityLabel("Translation provider, privacy, and limits")
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status.font = .systemFont(ofSize: 12)
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status.setAccessibilityLabel("Translation status and errors")
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let stack = NSStackView(views: [heading, provider, disclosure, credentials, scroll, status])
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stack.orientation = .vertical
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stack.alignment = .leading
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stack.spacing = 12
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stack.setCustomSpacing(4, after: provider)
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stack.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(stack)
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NSLayoutConstraint.activate([
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back.widthAnchor.constraint(equalToConstant: 22),
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back.heightAnchor.constraint(equalToConstant: 22),
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stack.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 16),
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stack.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -16),
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stack.topAnchor.constraint(equalTo: view.topAnchor),
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stack.bottomAnchor.constraint(equalTo: footer.topAnchor, constant: -12),
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footer.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 16),
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footer.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -8),
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footer.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -8),
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footer.heightAnchor.constraint(equalToConstant: 36),
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credentials.widthAnchor.constraint(equalTo: stack.widthAnchor),
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disclosure.widthAnchor.constraint(equalTo: stack.widthAnchor),
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scroll.widthAnchor.constraint(equalTo: stack.widthAnchor),
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scroll.heightAnchor.constraint(greaterThanOrEqualToConstant: 100),
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status.widthAnchor.constraint(equalTo: stack.widthAnchor),
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])
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updateProvider()
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}
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override func cancelOperation(_ sender: Any?) { goBack() }
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func control(_ control: NSControl, textView: NSTextView, doCommandBy selector: Selector) -> Bool {
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guard selector == #selector(NSResponder.cancelOperation(_:)) else { return false }
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goBack()
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return true
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}
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func textView(_ textView: NSTextView, doCommandBy selector: Selector) -> Bool {
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guard selector == #selector(NSResponder.cancelOperation(_:)) else { return false }
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goBack()
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return true
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}
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func controlTextDidChange(_ notification: Notification) { inputChanged() }
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@objc func goBack() {
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task?.cancel()
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task = nil
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closed?()
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}
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func inputChanged() {
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task?.cancel()
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task = nil
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translateButton.isEnabled = true
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output.string = ""
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setStatus("Press Return to translate.")
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}
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@objc private func providerChanged() {
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UserDefaults.standard.set(usesMyMemory ? "mymemory" : "openai", forKey: "translationProvider")
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keyField.stringValue = ""
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updateProvider()
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}
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private func updateProvider() {
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credentials.isHidden = usesMyMemory
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disclosure.stringValue = usesMyMemory
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? "MyMemory · No key · 500 bytes/request · 5,000 characters/day. Text is sent to MyMemory; avoid sensitive content."
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: "OpenAI · gpt-6-luna · Text is sent to OpenAI only when you translate."
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inputChanged()
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}
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@objc private func saveKey() {
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let key = keyField.stringValue.trimmingCharacters(in: .whitespacesAndNewlines)
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guard !key.isEmpty, !key.contains(where: { $0.isNewline }) else {
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setStatus("Enter a valid API key before saving.", isError: true)
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return
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}
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let data = Data(key.utf8)
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var result = SecItemUpdate(Self.credential as CFDictionary, [kSecValueData as String: data] as CFDictionary)
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if result == errSecItemNotFound {
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var item = Self.credential
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item[kSecValueData as String] = data
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item[kSecAttrAccessible as String] = kSecAttrAccessibleWhenUnlockedThisDeviceOnly
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result = SecItemAdd(item as CFDictionary, nil)
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}
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if result == errSecSuccess {
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keyField.stringValue = ""
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setStatus("API key saved in Keychain. Press Return to translate.")
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} else { showKeychainError(result) }
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}
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@objc private func forgetKey() {
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task?.cancel()
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task = nil
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translateButton.isEnabled = true
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let result = SecItemDelete(Self.credential as CFDictionary)
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if result == errSecSuccess || result == errSecItemNotFound {
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keyField.stringValue = ""
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setStatus("API key removed.")
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} else { showKeychainError(result) }
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}
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private func showKeychainError(_ code: OSStatus) {
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setStatus("Keychain error: \(SecCopyErrorMessageString(code, nil) as String? ?? String(code))", isError: true)
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}
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private func setStatus(_ message: String, isError: Bool = false) {
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status.stringValue = message
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status.textColor = isError ? .systemRed : SunsetPalette.secondaryText
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}
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@objc func translate() {
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guard task == nil else { return }
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let text = input?() ?? ""
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guard !text.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty else {
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setStatus("Enter English text in the search bar.", isError: true)
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return
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}
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let myMemory = usesMyMemory
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var key = ""
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if !myMemory {
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if !keyField.stringValue.isEmpty { saveKey(); guard keyField.stringValue.isEmpty else { return } }
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var query = Self.credential
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query[kSecReturnData as String] = true
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var item: CFTypeRef?
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let result = SecItemCopyMatching(query as CFDictionary, &item)
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guard result == errSecSuccess, let data = item as? Data, let savedKey = String(data: data, encoding: .utf8) else {
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if result == errSecItemNotFound { setStatus("Enter and save your OpenAI API key first.", isError: true) }
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else { showKeychainError(result) }
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return
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}
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key = savedKey
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}
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output.string = ""
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setStatus("Translating…")
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translateButton.isEnabled = false
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task = Task { [weak self] in
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do {
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let translation = try await myMemory
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? MyMemoryAPI.translate(text)
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: TranslationAPI.translate(text, apiKey: key)
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guard !Task.isCancelled, let self else { return }
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self.output.string = translation
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self.setStatus("Japanese · Select text to copy (⌘C).")
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} catch {
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guard !Task.isCancelled, let self else { return }
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self.setStatus("Translation failed: \(error.localizedDescription)", isError: true)
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}
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guard let self else { return }
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self.task = nil
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self.translateButton.isEnabled = true
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}
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}
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}
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