app.js

/* The code is setting up a server using the Express framework in JavaScript. It imports necessary
modules such as `express`, `body-parser`, and `sequelize`. It also imports various routes and models
from different files. */
const express = require("express")

const bodyParser = require("body-parser")
const sequelize = require("./src/util/database")


const categoryRoutes = require("./src/routes/category")
const productRoutes = require("./src/routes/product")
const authRoutes = require("./src/routes/auth")
const cartRoutes = require("./src/routes/cart")


const User = require("./src/model/user")
const Product = require("./src/model/product")
const Category = require("./src/model/category")
const Order = require("./src/model/order")
const Role = require("./src/model/role")
const UserRole = require("./src/model/userRole")
const Cart = require("./src/model/cart")
const CartItem = require("./src/model/cartItem")


const app = express()

app.use(bodyParser.json());
app.use(categoryRoutes)
app.use(authRoutes)
app.use(productRoutes)
app.use(cartRoutes)

app.use((error, req, res, next) => {
  res.status(error.statusCode || 500).json({ message: error.message })
})



Role.create({
  name: "admin"
}).then((role) => {
  console.log("Admin role created:", role);
}).catch((error) => {
  console.error("Error creating admin role:", error);
});
Role.create({
  name: "customer"
}).then((role) => {
  console.log("Customer role created:", role);
}).catch((error) => {
  console.error("Error creating user role:", error);
});
Role.create({
  name: "seller"
}).then((role) => {
  console.log("seller role created:", role);
}).catch((error) => {
  console.error("Error creating user role:", error);
});


User.hasOne(Cart)
Product.belongsToMany(User, { through: Order })
Category.hasMany(Product)
User.belongsToMany(Role, { through: UserRole });
Role.belongsToMany(User, { through: UserRole })
Cart.belongsToMany(Product, { through: CartItem });
Product.belongsToMany(Cart, { through: CartItem })


sequelize
  .sync()
  .then((result) => {
    app.listen(8080, () => {
      console.log("App is running on port 8080")
    })
  })
  .catch((error) => {
    console.error('Error syncing database:', error);
  });