seeder.js

const fs = require("fs");
const mongoose = require("mongoose");
const colors = require("colors");
const dotenv = require("dotenv");
const { ConnectionReadyEvent } = require("mongodb");

// Load env vars
dotenv.config({ path: "./config/config.env"});
// Load models
const Bootcamp = require("./models/Bootcamp");
const Course = require("./models/Course");
const User = require("./models/User");
const Review = require("./models/Review");
// Connect to DB
mongoose.connect(process.env.MONGO_URI, {
    useNewUrlParser: true, 
    useUnifiedTopology: true
});
// Read JSON files
const bootcamps = 
    JSON.parse(fs.readFileSync(`${__dirname}/_data/bootcamps.json`, "utf-8")
);
const courses = 
    JSON.parse(fs.readFileSync(`${__dirname}/_data/courses.json`, "utf-8")
);
const users =
    JSON.parse(fs.readFileSync(`${__dirname}/_data/users.json`, "utf-8")
);
const reviews =
    JSON.parse(fs.readFileSync(`${__dirname}/_data/reviews.json`, "utf-8")
);
// Import into DB
const importData = async () => {
    try{
        await Bootcamp.create(bootcamps);
        await Course.create(courses);
        await User.create(users);
        await Review.create(reviews);
        console.log("Data Imported...".green.inverse);
        process.exit();    
    } catch (err) {
        console.log(err);
    }
};
// Delete Data
const deleteData = async () => {
    try{
        await Bootcamp.deleteMany();
        await Course.deleteMany();
        await User.deleteMany();
        await Review.deleteMany();
        console.log("Data Destroyed...".red.inverse);
        process.exit();    
    } catch (err) {
        console.log(err);
    }
};


if(process.argv[2] === "-i") {
    importData();
} else if(process.argv[2] === "-d"){
    deleteData();
}else {
    console.log("Please add valid options for the seeder -i or -d");
    process.exit();
};