update check cache

app.py

@@ -676,19 +676,19 @@ def generate_tts():
     valid_pairs = []
     # 枚举所有模型对，找到第一个都通过的组合
     for i in range(len(candidate_models)):
-        for j in range(len(candidate_models)):
-            if i == j:
-                continue
-            model_a = candidate_models[i]
+        model_a = candidate_models[i]
+        audio_a_path = find_cached_audio(str(model_a.id), text, reference_audio_path)
+        if not os.path.exists(audio_a_path) or has_long_silence(audio_a_path):
+            continue
+        # 检测到a模型音频有效，继续检测b模型
+        for j in range(i + 1, len(candidate_models)):
             model_b = candidate_models[j]
-            audio_a_path = find_cached_audio(str(model_a.id), text, reference_audio_path)
             audio_b_path = find_cached_audio(str(model_b.id), text, reference_audio_path)
-            if (audio_a_path and os.path.exists(audio_a_path)
-                and not has_long_silence(audio_a_path)
-                and audio_b_path and os.path.exists(audio_b_path)
-                and not has_long_silence(audio_b_path)):
-                valid_pairs.append((model_a, audio_a_path, model_b, audio_b_path))
-                app.logger.warning(f"Found valid model pair: {model_a.name} and {model_b.name} for text '{text[:50]}...'")
+            if not os.path.exists(audio_b_path) or has_long_silence(audio_b_path):
+                continue
+            valid_pairs.append((model_a, audio_a_path, model_b, audio_b_path))
+            app.logger.warning(f"Found valid model pair: {model_a.name} and {model_b.name} for text '{text[:50]}...'")
+            break
     if not valid_pairs:
         return jsonify({"error": "所有模型均未通过持久化缓存和静音检测，无法生成音频"}), 500