Fixed the duplicate data check problem, history filter and add tts stream (#477)

packages/service/common/buffer/tts/schema.ts

@@ -0,0 +1,35 @@
+import { connectionMongo, type Model } from '../../../common/mongo';
+const { Schema, model, models } = connectionMongo;
+import { TTSBufferSchemaType } from './type.d';
+
+export const collectionName = 'ttsbuffers';
+
+const TTSBufferSchema = new Schema({
+  bufferId: {
+    type: String,
+    required: true
+  },
+  text: {
+    type: String,
+    required: true
+  },
+  buffer: {
+    type: Buffer,
+    required: true
+  },
+  createTime: {
+    type: Date,
+    default: () => new Date()
+  }
+});
+
+try {
+  TTSBufferSchema.index({ bufferId: 1 });
+  //  24 hour
+  TTSBufferSchema.index({ createTime: 1 }, { expireAfterSeconds: 24 * 60 * 60 });
+} catch (error) {
+  console.log(error);
+}
+
+export const MongoTTSBuffer: Model<TTSBufferSchemaType> =
+  models[collectionName] || model(collectionName, TTSBufferSchema);