feat(dictionary): add iCloud KVS sync, cloud ASR, and lexicon expansion

Mirror the personal dictionary through iCloud Key-Value Store with
deterministic merge rules, main-app-only sync UI, and App Group as the
keyboard runtime cache. Add cloud-engine ASR with dictionary bias and
expand the bundled custom language model lexicon.
This commit is contained in:
Rocky
2026-07-06 22:44:14 +08:00
parent 07df14b546
commit bf844caa7f
40 changed files with 5692 additions and 106 deletions
@@ -0,0 +1,169 @@
// AlibabaVocabularySync.swift
// OSGKeyboard · Shared
//
// Syncs PersonalDictionary DashScope custom vocabulary (Fun-ASR Flash).
import Foundation
public enum AlibabaVocabularySync {
public enum Keys {
public static let vocabularyId = "config.alibabaASRVocabularyId"
public static let fingerprint = "config.alibabaASRVocabularyFingerprint"
}
private static let vocabularyPrefix = "osgkb"
/// Returns a ready `vocabulary_id`, creating or updating the remote list as needed.
public static func ensureVocabularyID(
dictionary: PersonalDictionary,
apiKey: String,
targetModel: String = CloudASRModelCatalog.alibabaVocabularyTargetModel,
defaults: UserDefaults,
session: URLSession = .shared
) async throws -> String? {
let entries = dictionary.alibabaHotwordEntries()
guard !entries.isEmpty else {
clearCache(defaults: defaults)
return nil
}
let fingerprint = dictionary.vocabularySyncFingerprint()
if let cachedID = defaults.string(forKey: Keys.vocabularyId),
defaults.string(forKey: Keys.fingerprint) == fingerprint,
!cachedID.isEmpty {
return cachedID
}
let url = try customizationURL()
if let existingID = defaults.string(forKey: Keys.vocabularyId), !existingID.isEmpty {
try await updateVocabulary(
id: existingID,
entries: entries,
apiKey: apiKey,
url: url,
session: session
)
cache(id: existingID, fingerprint: fingerprint, defaults: defaults)
return existingID
}
let createdID = try await createVocabulary(
entries: entries,
targetModel: targetModel,
apiKey: apiKey,
url: url,
session: session
)
cache(id: createdID, fingerprint: fingerprint, defaults: defaults)
return createdID
}
public static func clearCache(defaults: UserDefaults) {
defaults.removeObject(forKey: Keys.vocabularyId)
defaults.removeObject(forKey: Keys.fingerprint)
}
private static func cache(id: String, fingerprint: String, defaults: UserDefaults) {
defaults.set(id, forKey: Keys.vocabularyId)
defaults.set(fingerprint, forKey: Keys.fingerprint)
}
private static func customizationURL() throws -> URL {
let raw = CloudASRModelCatalog.alibabaAPIBase + CloudASRModelCatalog.alibabaCustomizationPath
guard let url = URL(string: raw) else { throw CloudASRError.invalidURL }
return url
}
private static func createVocabulary(
entries: [AlibabaHotwordEntry],
targetModel: String,
apiKey: String,
url: URL,
session: URLSession
) async throws -> String {
let vocabulary = entries.map { entry -> [String: Any] in
var item: [String: Any] = ["text": entry.text, "weight": entry.weight]
if let lang = entry.lang { item["lang"] = lang }
return item
}
let body: [String: Any] = [
"model": "speech-biasing",
"input": [
"action": "create_vocabulary",
"target_model": targetModel,
"prefix": vocabularyPrefix,
"vocabulary": vocabulary,
] as [String: Any],
]
let data = try await postJSON(body, to: url, apiKey: apiKey, session: session)
guard let id = parseVocabularyID(from: data) else {
throw CloudASRError.decoding("missing vocabulary_id")
}
return id
}
private static func updateVocabulary(
id: String,
entries: [AlibabaHotwordEntry],
apiKey: String,
url: URL,
session: URLSession
) async throws {
let vocabulary = entries.map { entry -> [String: Any] in
var item: [String: Any] = ["text": entry.text, "weight": entry.weight]
if let lang = entry.lang { item["lang"] = lang }
return item
}
let body: [String: Any] = [
"model": "speech-biasing",
"input": [
"action": "update_vocabulary",
"vocabulary_id": id,
"vocabulary": vocabulary,
] as [String: Any],
]
_ = try await postJSON(body, to: url, apiKey: apiKey, session: session)
}
private static func postJSON(
_ body: [String: Any],
to url: URL,
apiKey: String,
session: URLSession
) async throws -> [String: Any] {
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.setValue("Bearer \(apiKey)", forHTTPHeaderField: "Authorization")
request.httpBody = try JSONSerialization.data(withJSONObject: body)
let (data, response) = try await session.data(for: request)
guard let http = response as? HTTPURLResponse else {
throw CloudASRError.transport("non-HTTP response")
}
let json = (try? JSONSerialization.jsonObject(with: data)) as? [String: Any]
guard (200..<300).contains(http.statusCode) else {
let message = parseAPIErrorMessage(from: json)
throw CloudASRError.http(status: http.statusCode, message: message)
}
return json ?? [:]
}
private static func parseVocabularyID(from json: [String: Any]) -> String? {
if let output = json["output"] as? [String: Any],
let id = output["vocabulary_id"] as? String {
return id
}
return nil
}
private static func parseAPIErrorMessage(from json: [String: Any]?) -> String? {
guard let json else { return nil }
if let message = json["message"] as? String { return message }
if let error = json["error"] as? [String: Any],
let message = error["message"] as? String {
return message
}
return nil
}
}
@@ -0,0 +1,411 @@
// CloudASRClients.swift
// OSGKeyboard · Shared
//
// Provider-specific cloud ASR backends with personal-dictionary bias.
import Foundation
public protocol CloudASRTranscribing: Sendable {
func prepare(dictionary: PersonalDictionary) async throws
func transcribe(
samples: [Float],
sampleRate: Int,
locale: Locale,
dictionary: PersonalDictionary
) async throws -> String
}
public enum CloudASRClientFactory {
public static func make(store: AppGroupStore, session: URLSession = .shared) -> CloudASRTranscribing {
let strategy = CloudASRModelCatalog.strategy(for: store.providerId)
switch strategy {
case .zhipuHotwords:
return ZhipuCloudASRClient(
apiKey: store.apiKey,
model: CloudASRModelCatalog.defaultModel(for: store.providerId),
session: session
)
case .alibabaVocabulary:
return AlibabaFunASRClient(
apiKey: store.apiKey,
model: CloudASRModelCatalog.defaultModel(for: store.providerId),
store: store,
session: session
)
case .prompt:
return PromptCloudASRClient(
providerId: store.providerId,
baseURL: store.baseURL,
apiKey: store.apiKey,
model: CloudASRModelCatalog.defaultModel(for: store.providerId),
session: session
)
case .localFallback:
return UnsupportedCloudASRClient(providerId: store.providerId)
}
}
}
// MARK: - Zhipu (hotwords + prompt)
struct ZhipuCloudASRClient: CloudASRTranscribing {
let apiKey: String
let model: String
let session: URLSession
private static let maxDurationSeconds: TimeInterval = 30
func prepare(dictionary: PersonalDictionary) async throws {}
func transcribe(
samples: [Float],
sampleRate: Int,
locale: Locale,
dictionary: PersonalDictionary
) async throws -> String {
guard !apiKey.isEmpty else { throw CloudASRError.noAPIKey }
let duration = Double(samples.count) / Double(sampleRate)
guard duration <= Self.maxDurationSeconds else { throw CloudASRError.audioTooLong }
let wav = PCMSampleWavEncoder.encode(samples: samples, sampleRate: sampleRate)
let urlString = "https://open.bigmodel.cn/api/paas/v4\(CloudASRModelCatalog.zhipuTranscriptionPath)"
guard let url = URL(string: urlString) else { throw CloudASRError.invalidURL }
let boundary = "Boundary-\(UUID().uuidString)"
var body = Data()
func appendField(_ name: String, _ value: String) {
body.append("--\(boundary)\r\n".data(using: .utf8)!)
body.append("Content-Disposition: form-data; name=\"\(name)\"\r\n\r\n".data(using: .utf8)!)
body.append("\(value)\r\n".data(using: .utf8)!)
}
appendField("model", model)
appendField("stream", "false")
let hotwords = dictionary.asrHotwords()
if !hotwords.isEmpty,
let hotwordsJSON = try? JSONSerialization.data(withJSONObject: hotwords),
let hotwordsString = String(data: hotwordsJSON, encoding: .utf8) {
appendField("hotwords", hotwordsString)
}
let prompt = dictionary.asrPromptBias()
if !prompt.isEmpty {
appendField("prompt", prompt)
}
body.append("--\(boundary)\r\n".data(using: .utf8)!)
body.append("Content-Disposition: form-data; name=\"file\"; filename=\"chunk.wav\"\r\n".data(using: .utf8)!)
body.append("Content-Type: audio/wav\r\n\r\n".data(using: .utf8)!)
body.append(wav)
body.append("\r\n".data(using: .utf8)!)
body.append("--\(boundary)--\r\n".data(using: .utf8)!)
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("Bearer \(apiKey)", forHTTPHeaderField: "Authorization")
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
request.httpBody = body
request.timeoutInterval = 60
let (data, response) = try await session.data(for: request)
try Self.validateHTTP(response: response, data: data)
guard let text = Self.parseZhipuText(from: data)?.trimmingCharacters(in: .whitespacesAndNewlines),
!text.isEmpty else {
throw CloudASRError.emptyTranscript
}
return text
}
private static func parseZhipuText(from data: Data) -> String? {
guard let json = try? JSONSerialization.jsonObject(with: data) as? [String: Any] else {
return nil
}
return json["text"] as? String
}
fileprivate static func validateHTTP(response: URLResponse, data: Data) throws {
guard let http = response as? HTTPURLResponse else {
throw CloudASRError.transport("non-HTTP response")
}
guard (200..<300).contains(http.statusCode) else {
let message = parseErrorMessage(from: data)
throw CloudASRError.http(status: http.statusCode, message: message)
}
}
fileprivate static func parseErrorMessage(from data: Data) -> String? {
guard let json = try? JSONSerialization.jsonObject(with: data) as? [String: Any] else {
return nil
}
if let message = json["message"] as? String { return message }
if let error = json["error"] as? [String: Any],
let message = error["message"] as? String {
return message
}
return nil
}
}
// MARK: - Alibaba Fun-ASR Flash (vocabulary_id + context)
struct AlibabaFunASRClient: CloudASRTranscribing {
let apiKey: String
let model: String
// Hold the (@unchecked Sendable) AppGroupStore rather than a raw
// UserDefaults so this struct stays Sendable under strict concurrency.
let store: AppGroupStore
let session: URLSession
func prepare(dictionary: PersonalDictionary) async throws {
_ = try await AlibabaVocabularySync.ensureVocabularyID(
dictionary: dictionary,
apiKey: apiKey,
targetModel: CloudASRModelCatalog.alibabaVocabularyTargetModel,
defaults: store.defaults,
session: session
)
}
func transcribe(
samples: [Float],
sampleRate: Int,
locale: Locale,
dictionary: PersonalDictionary
) async throws -> String {
guard !apiKey.isEmpty else { throw CloudASRError.noAPIKey }
let vocabularyID = try await AlibabaVocabularySync.ensureVocabularyID(
dictionary: dictionary,
apiKey: apiKey,
targetModel: CloudASRModelCatalog.alibabaVocabularyTargetModel,
defaults: store.defaults,
session: session
)
let dataURI = PCMSampleWavEncoder.dataURI(samples: samples, sampleRate: sampleRate)
let urlString = CloudASRModelCatalog.alibabaAPIBase + CloudASRModelCatalog.alibabaMultimodalPath
guard let url = URL(string: urlString) else { throw CloudASRError.invalidURL }
var messages: [[String: Any]] = []
let context = dictionary.alibabaContextText()
if !context.isEmpty {
messages.append([
"role": "user",
"content": [
["type": "input_text", "text": context],
],
])
}
messages.append([
"role": "user",
"content": [
[
"type": "input_audio",
"input_audio": ["data": dataURI],
],
],
])
var parameters: [String: Any] = [
"format": "wav",
"sample_rate": "\(sampleRate)",
]
if let vocabularyID, !vocabularyID.isEmpty {
parameters["vocabulary_id"] = vocabularyID
}
let body: [String: Any] = [
"model": model,
"input": ["messages": messages],
"parameters": parameters,
]
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.setValue("Bearer \(apiKey)", forHTTPHeaderField: "Authorization")
request.setValue("disable", forHTTPHeaderField: "X-DashScope-SSE")
request.httpBody = try JSONSerialization.data(withJSONObject: body)
request.timeoutInterval = 90
let (data, response) = try await session.data(for: request)
try ZhipuCloudASRClient.validateHTTP(response: response, data: data)
guard let text = Self.parseText(from: data)?.trimmingCharacters(in: .whitespacesAndNewlines),
!text.isEmpty else {
throw CloudASRError.emptyTranscript
}
return text
}
private static func parseText(from data: Data) -> String? {
guard let json = try? JSONSerialization.jsonObject(with: data) as? [String: Any],
let output = json["output"] as? [String: Any] else {
return nil
}
if let text = output["text"] as? String { return text }
if let sentence = output["sentence"] as? [String: Any],
let text = sentence["text"] as? String {
return text
}
return nil
}
}
// MARK: - Prompt-biased transcription (OpenAI / MiMo / custom)
struct PromptCloudASRClient: CloudASRTranscribing {
let providerId: String
let baseURL: String
let apiKey: String
let model: String
let session: URLSession
func prepare(dictionary: PersonalDictionary) async throws {}
func transcribe(
samples: [Float],
sampleRate: Int,
locale: Locale,
dictionary: PersonalDictionary
) async throws -> String {
guard !apiKey.isEmpty else { throw CloudASRError.noAPIKey }
if providerId == "mimo" {
return try await transcribeMiMo(
samples: samples,
sampleRate: sampleRate,
dictionary: dictionary
)
}
return try await transcribeOpenAIStyle(
samples: samples,
sampleRate: sampleRate,
dictionary: dictionary
)
}
private func transcribeOpenAIStyle(
samples: [Float],
sampleRate: Int,
dictionary: PersonalDictionary
) async throws -> String {
let wav = PCMSampleWavEncoder.encode(samples: samples, sampleRate: sampleRate)
let trimmedBase = baseURL.hasSuffix("/") ? String(baseURL.dropLast()) : baseURL
let urlString = "\(trimmedBase)/audio/transcriptions"
guard let url = URL(string: urlString) else { throw CloudASRError.invalidURL }
let boundary = "Boundary-\(UUID().uuidString)"
var body = Data()
func appendField(_ name: String, _ value: String) {
body.append("--\(boundary)\r\n".data(using: .utf8)!)
body.append("Content-Disposition: form-data; name=\"\(name)\"\r\n\r\n".data(using: .utf8)!)
body.append("\(value)\r\n".data(using: .utf8)!)
}
appendField("model", model)
let prompt = dictionary.asrPromptBias(maxCharacters: 600)
if !prompt.isEmpty {
appendField("prompt", prompt)
}
body.append("--\(boundary)\r\n".data(using: .utf8)!)
body.append("Content-Disposition: form-data; name=\"file\"; filename=\"chunk.wav\"\r\n".data(using: .utf8)!)
body.append("Content-Type: audio/wav\r\n\r\n".data(using: .utf8)!)
body.append(wav)
body.append("\r\n".data(using: .utf8)!)
body.append("--\(boundary)--\r\n".data(using: .utf8)!)
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("Bearer \(apiKey)", forHTTPHeaderField: "Authorization")
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
request.httpBody = body
request.timeoutInterval = 90
let (data, response) = try await session.data(for: request)
try ZhipuCloudASRClient.validateHTTP(response: response, data: data)
guard let text = Self.parseOpenAIText(from: data)?.trimmingCharacters(in: .whitespacesAndNewlines),
!text.isEmpty else {
throw CloudASRError.emptyTranscript
}
return text
}
private func transcribeMiMo(
samples: [Float],
sampleRate: Int,
dictionary: PersonalDictionary
) async throws -> String {
let dataURI = PCMSampleWavEncoder.dataURI(samples: samples, sampleRate: sampleRate)
let trimmedBase = baseURL.hasSuffix("/") ? String(baseURL.dropLast()) : baseURL
let urlString = "\(trimmedBase)/chat/completions"
guard let url = URL(string: urlString) else { throw CloudASRError.invalidURL }
var userContent: [[String: Any]] = []
let prompt = dictionary.asrPromptBias()
if !prompt.isEmpty {
userContent.append(["type": "text", "text": prompt])
}
userContent.append([
"type": "input_audio",
"input_audio": ["data": dataURI],
])
let body: [String: Any] = [
"model": model,
"messages": [
["role": "user", "content": userContent],
],
"asr_options": ["language": "auto"],
]
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.setValue(apiKey, forHTTPHeaderField: "api-key")
request.httpBody = try JSONSerialization.data(withJSONObject: body)
request.timeoutInterval = 90
let (data, response) = try await session.data(for: request)
try ZhipuCloudASRClient.validateHTTP(response: response, data: data)
guard let text = Self.parseChatCompletionText(from: data)?.trimmingCharacters(in: .whitespacesAndNewlines),
!text.isEmpty else {
throw CloudASRError.emptyTranscript
}
return text
}
private static func parseOpenAIText(from data: Data) -> String? {
guard let json = try? JSONSerialization.jsonObject(with: data) as? [String: Any] else {
return nil
}
return json["text"] as? String
}
private static func parseChatCompletionText(from data: Data) -> String? {
guard let json = try? JSONSerialization.jsonObject(with: data) as? [String: Any],
let choices = json["choices"] as? [[String: Any]],
let first = choices.first,
let message = first["message"] as? [String: Any] else {
return nil
}
return message["content"] as? String
}
}
// MARK: - Unsupported hosted ASR (Moonshot)
struct UnsupportedCloudASRClient: CloudASRTranscribing {
let providerId: String
func prepare(dictionary: PersonalDictionary) async throws {}
func transcribe(
samples: [Float],
sampleRate: Int,
locale: Locale,
dictionary: PersonalDictionary
) async throws -> String {
throw CloudASRError.providerUnsupported
}
}
@@ -0,0 +1,147 @@
// CloudASRService.swift
// OSGKeyboard · Shared
//
// Cloud-engine ASR: uploads PCM chunks to the user's configured provider
// with personal-dictionary bias. Moonshot falls back to on-device ASR.
import Foundation
import os
public final class CloudASRService: ASRService, @unchecked Sendable {
private let store: AppGroupStore
private let session: URLSession
private let localFallback: ASRService
private let lock = OSAllocatedUnfairLock()
private var client: CloudASRTranscribing?
private var usesLocalFallback = false
private var boundProviderId: String?
private var cancelled = false
public init(
store: AppGroupStore = AppGroupStore(),
session: URLSession = .shared,
localFallback: ASRService? = nil
) {
self.store = store
self.session = session
// `SpeechAnalyzerASR` is internal, so it can't appear in a public
// default argument value resolve the fallback in the body instead.
self.localFallback = localFallback ?? SpeechAnalyzerASR()
}
public func resetForNewUtterance() {
lock.withLock { cancelled = false }
if usesLocalFallback {
localFallback.resetForNewUtterance()
}
}
public func warmup(locale: Locale) async {
bindClientIfNeeded()
if usesLocalFallback {
await localFallback.warmup(locale: locale)
return
}
guard let client = lock.withLock({ client }) else { return }
do {
try await client.prepare(dictionary: store.personalDictionary)
} catch {
OSGLog.asr.warning("cloud ASR vocabulary prepare failed: \(error.localizedDescription, privacy: .public)")
}
}
public func transcribeChunk(samples: [Float], locale: Locale) async -> ASRChunkResult {
guard !samples.isEmpty else { return .success("") }
if Task.isCancelled || lock.withLock({ cancelled }) { return .cancelled }
bindClientIfNeeded()
if usesLocalFallback {
return await localFallback.transcribeChunk(samples: samples, locale: locale)
}
guard let client = lock.withLock({ client }) else {
return .failure(CloudASRError.providerUnsupported.localizedDescription)
}
do {
let text = try await client.transcribe(
samples: samples,
sampleRate: 16_000,
locale: locale,
dictionary: store.personalDictionary
)
let trimmed = text.trimmingCharacters(in: .whitespacesAndNewlines)
return trimmed.isEmpty ? .success("") : .success(trimmed)
} catch is CancellationError {
return .cancelled
} catch {
return .failure(error.localizedDescription)
}
}
public func transcribe(
stream: AsyncStream<AudioBufferSnapshot>,
locale: Locale
) -> AsyncStream<ASREvent> {
bindClientIfNeeded()
if usesLocalFallback {
return localFallback.transcribe(stream: stream, locale: locale)
}
return AsyncStream { continuation in
continuation.yield(.capability(onDeviceSupported: false))
let task = Task {
var samples: [Float] = []
for await snap in stream {
if Task.isCancelled { break }
samples.append(contentsOf: snap.samples)
}
guard !Task.isCancelled, !self.lock.withLock({ self.cancelled }) else {
continuation.finish()
return
}
guard !samples.isEmpty else {
continuation.yield(.error(SharedL10n.string("error.asr.noSpeech")))
continuation.finish()
return
}
switch await self.transcribeChunk(samples: samples, locale: locale) {
case .success(let text):
if text.isEmpty {
continuation.yield(.error(SharedL10n.string("error.asr.noSpeech")))
} else {
continuation.yield(.final(text))
}
case .failure(let message):
continuation.yield(.error(message))
case .cancelled:
break
}
continuation.finish()
}
continuation.onTermination = { @Sendable _ in
task.cancel()
self.cancel()
}
}
}
public func cancel() {
lock.withLock { cancelled = true }
localFallback.cancel()
}
private func bindClientIfNeeded() {
let providerId = store.providerId
let strategy = CloudASRModelCatalog.strategy(for: providerId)
lock.withLock {
guard boundProviderId != providerId else { return }
boundProviderId = providerId
usesLocalFallback = strategy == .localFallback
client = usesLocalFallback
? nil
: CloudASRClientFactory.make(store: store, session: session)
}
}
}