add TencentTTS

AIGrammar/lib/TTSManager.swift

@@ -0,0 +1,100 @@
+//
+//  TTSManager.swift
+//  AIGrammar
+//
+//  Created by oscar on 2024/8/29.
+//
+
+import Foundation
+import AVFAudio
+
+class TTSManager: NSObject, QCloudTTSEngineDelegate {
+    static let shared = TTSManager() // 单例模式
+
+    private var synthesizer: QCloudTTSEngine?
+    private var audioPlayer: AVAudioPlayer?
+    private var onSuccess: (() -> Void)?
+    private var onFailure: ((String) -> Void)?
+
+    // 设定个非会员每天的使用上限
+    private let dailyLimit = 100
+    private let userDefaults = UserDefaults.standard
+    
+    private override init() {
+        super.init()
+        setupSynthesizer()
+    }
+
+    private func setupSynthesizer() {
+        synthesizer = QCloudTTSEngine.getShareInstance() as? QCloudTTSEngine
+        synthesizer?.engineInit(.TTS_MODE_ONLINE, delegate: self)
+        synthesizer?.setOnlineAuthParam(1300230265, secretId: "AKIDmcetGuREGiDOBeIJVm4Kd1ZOUqFdD1CQ", secretKey: "UwhP3XrJfrx8IQUfpMvRznYTK5lM4rhR", token: nil)
+    }
+
+    func synthesizeAndPlay(text: String, isVIP: Bool, onSuccess: @escaping () -> Void, onFailure: @escaping (String) -> Void) {
+        if !isVIP {
+            let currentDate = Date()
+            let dateFormatter = DateFormatter()
+            dateFormatter.dateFormat = "yyyy-MM-dd"
+            let currentDateString = dateFormatter.string(from: currentDate)
+            
+            let lastDateString = userDefaults.string(forKey: "LastCallDate") ?? ""
+            var callCount = userDefaults.integer(forKey: "CallCount")
+
+            if currentDateString != lastDateString {
+                // 如果日期变化，重置计数器
+                callCount = 0
+                userDefaults.set(currentDateString, forKey: "LastCallDate")
+            }
+            logger.info("nonVIP check limit, cnt: \(callCount), limit: \(dailyLimit)")
+            if callCount >= dailyLimit {
+                onFailure("Daily limit reached. Please try again tomorrow.")
+                return
+            } else {
+                // 增加调用计数
+                callCount += 1
+                userDefaults.set(callCount, forKey: "CallCount")
+            }
+        }
+        
+        guard let synthesizer = synthesizer else {
+            onFailure("Synthesizer is not initialized.")
+            return
+        }
+
+        self.onSuccess = onSuccess
+        self.onFailure = onFailure
+
+        let error = synthesizer.synthesize(text, utteranceId: "test")
+        if let error = error {
+            onFailure("Synthesis error: \(error)")
+        }
+    }
+
+    // MARK: - QCloudTTSEngineDelegate
+    func onSynthesizeData(_ data: Data?, utteranceId: String?, text: String?, engineType: Int, requestId: String?, respJson: String?) {
+        guard let data = data else {
+            onFailure?("Synthesis failed with no data.")
+            return
+        }
+
+        do {
+            audioPlayer = try AVAudioPlayer(data: data)
+            audioPlayer?.prepareToPlay()
+            audioPlayer?.play()
+            onSuccess?()
+        } catch {
+            onFailure?("Failed to play synthesized audio: \(error)")
+        }
+    }
+
+    func onError(_ error: TtsError?, utteranceId: String?, text: String?) {
+        if let error = error {
+            onFailure?("Synthesis error: \(error)")
+        }
+    }
+
+    func onOfflineAuthInfo(_ OfflineAuthInfo: QCloudOfflineAuthInfo) {
+        // 处理离线授权信息，如果需要
+    }
+}