add db module

packages/xhs/src/services/xhs-db/comment.ts

@@ -0,0 +1,44 @@
+import { InitOptions, Model, Sequelize, SyncOptions } from 'sequelize';
+import { DataTypes } from 'sequelize';
+export class Comment extends Model {
+  declare id: number;
+  declare content: string;
+  declare note_id: string;
+  declare user_id: string;
+  declare comment_id: string;
+  declare created_at: Date;
+  declare updated_at: Date;
+  static async initModel(sequelize: Sequelize, initOptions?: InitOptions, opts?: SyncOptions) {
+    Comment.init(
+      {
+        id: {
+          type: DataTypes.INTEGER,
+          primaryKey: true,
+          autoIncrement: true,
+        },
+        content: {
+          type: DataTypes.TEXT,
+          allowNull: false,
+        },
+        note_id: {
+          type: DataTypes.STRING,
+          allowNull: false,
+        },
+        user_id: {
+          type: DataTypes.STRING,
+          allowNull: false,
+        },
+        comment_id: {
+          type: DataTypes.STRING,
+          allowNull: false,
+        },
+      },
+      {
+        sequelize, // passing the `sequelize` instance is required
+        modelName: 'Comment', // we need to choose the model name
+        ...initOptions,
+      },
+    );
+    await Comment.sync(opts || {});
+  }
+}