db.js

const mongoose = require("mongoose");

const Schema = mongoose.Schema;
const ObjectId = mongoose.ObjectId;

const userSchema = new Schema({
    email: {type: String, unique: true},
    password: String,
    firstName: String,
    lastName: String
})
const adminSchema = new Schema({
    email: {type: String, unique: true},
    password: String,
    firstName: String,
    lastName: String
})
const courseSchema = new Schema({
    title: String,
    description: String,
    price: Number,
    imageUrl: String,
    creatorId: ObjectId
})
const purchaseSchema = new Schema({
    userId: ObjectId,
    courseId: ObjectId
})

const userModel = mongoose.model("user", userSchema)
const adminModel = mongoose.model("admin", adminSchema)
const courseModel = mongoose.model("course", courseSchema)
const purchaseModel = mongoose.model("purchase", purchaseSchema)

module.exports = {
    userModel,
    adminModel,
    courseModel,
    purchaseModel
}