ADD: keyword model

ADD: database connection and migration

@@ -3,13 +3,28 @@ const line = require("@line/bot-sdk");
 const setFlexMessage = require("./apis/setFlexMessage");
 const fs = require("fs");
 
+const { sequelize } = require('./models')
+
+// Initialize DB connection
+sequelize.sync({ force: false })
+    .then(() => {
+        console.log('database connection complete');
+    })
+    .catch((err) => {
+        console.log('database connection failed');
+    });
+
+// Load .env configuration
 require("dotenv").config();
 const config = {
   channelAccessToken: process.env.channelAccessToken,
   channelSecret: process.env.channelSecret,
 };
 
+// Express app server initialization
 const app = express();
+
+// Create post request handler for chatbot
 app.post("/webhook", line.middleware(config), (req, res) => {
   Promise.all(req.body.events.map(handleEvent)).then((result) =>
     res.json(result)

@@ -34,6 +34,10 @@ Object.keys(db).forEach(modelName => {
 db.sequelize = sequelize;
 db.Sequelize = Sequelize;
 
-db.user = require("./user")(sequelize, Sequelize)
+db.user = require("./user")(sequelize, Sequelize);
+db.keyword = require("./keyword")(sequelize, Sequelize);
+
+db.user.belongsToMany(db.keyword, {through: 'user_keyword'});
+db.keyword.belongsToMany(db.user, {through: 'user_keyword'});
 
 module.exports = db;

+module.exports = (sequelize, DataTypes) => {
+
+    return sequelize.define("keyword", {
+        id: {
+            type: DataTypes.INTEGER,
+            autoIncrement: true,
+            primaryKey: true
+        },
+        keyword: {
+            type: DataTypes.STRING,
+            allowNull: false
+        }
+    })
+}
\ No newline at end of file

@@ -2,12 +2,12 @@ module.exports = (sequelize, DataTypes) => {
 
     return sequelize.define("user", {
         id: {
-            type: DataTypes.INT,
+            type: DataTypes.INTEGER,
             autoIncrement: true,
             primaryKey: true
         },
         userId: {
-            type: DataTypes.INT,
+            type: DataTypes.INTEGER,
             allowNull: false
         }
     })