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bamazon.js
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bamazon.js
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const mysql = require('mysql');
const inquirer = require('inquirer');
//const Table = require('cli-table');
const chalk = require('chalk');
const Table = require('cli-table-redemption');
let userStatus, itemIndex;
const connection = mysql.createConnection({
host: 'localhost',
port: 8889,
user: 'root',
password: 'root',
database: 'bamazonMkII'
});
//======[UTILITY FUNCTIONS]======
function connectToDB(){
connection.connect(function(err){
if (err) throw err;
console.log('connected to DB');
displayWelcome();
});
}
function updateInventory(param1, param2, param3){
connection.query('UPDATE inventory SET ? WHERE ?', [
{
stock_quantity: param1,
product_sales: param2
}, {
item_id: param3
}
], function(err){
if (err) throw err;
});
}
function stayOrGo(answer){
switch (userStatus) {
case 'customer':
inquirer.prompt([
{
name: 'userChoice',
type: 'confirm',
message: `You bought ${answer.amount} ${answer.item}. Your total is $${answer.cost}.00. Would you like to buy anything else?`
}
]).then(function(answer){
answer.userChoice ? customer() : displayWelcome();
});
break;
}
}
function showInv(input){
if (input === 'all') {
connection.query('SELECT * FROM inventory', function(error, results){
if (error) throw error;
let table = new Table({
head: ['No.', 'Product', 'Department', 'Price', 'Stock Quanity'],
colWidths: [5, 15, 15, 10, 15]
});
for (let i = 0; i < results.length; i++) {
table.push(
[results[i].item_id, results[i].product_name, results[i].department_name, results[i].price, results[i].stock_quantity, results[i].product_sales]
);
}
console.log(table.toString());
manager();
});//--connection.query--
}
if (input === 'low') {
connection.query('SELECT * FROM inventory WHERE stock_quantity<=5', function(error, results){
if (error) throw error;
let table = new Table({
head: ['No.', 'Product', 'Department', 'Price', 'Stock Quanity'],
colWidths: [5, 15, 15, 10, 15]
});
for (let i = 0; i < results.length; i++) {
table.push(
[results[i].item_id, results[i].product_name, results[i].department_name, results[i].price, results[i].stock_quantity, results[i].product_sales]
);
}
console.log(table.toString());
manager();
});//--connection.query--
}
}
function manageInv(input){
if (input === 'increase') {
let choiceArr = [];
connection.query('SELECT * FROM inventory', function(error, results){
if (error) throw error;
for (var i = 0; i < results.length; i++) {
choiceArr.push(results[i].product_name);
}
let table = new Table({
head: ['No.', 'Product', 'Department', 'Price', 'Stock Quanity'],
colWidths: [5, 15, 15, 10, 15]
});
for (let i = 0; i < results.length; i++) {
table.push(
[results[i].item_id, results[i].product_name, results[i].department_name, results[i].price, results[i].stock_quantity, results[i].product_sales]
);
}
console.log(table.toString());
inquirer.prompt([
{
type: 'input',
name: 'userChoice',
message: 'Which item do you want to increase? Please input item No.'
}, {
type: 'input',
name: 'amount',
message: 'How much do you want to increase by?'
}, {
type: 'confirm',
name: 'validation',
message: 'Are you sure?'
}
]).then(function(answer){
if (answer.validation) {
let index = parseInt(answer.userChoice) - 1;
let newAmount = parseInt(results[index].stock_quantity) + parseInt(answer.amount);
connection.query('UPDATE inventory SET ? WHERE ?', [
{
stock_quantity: newAmount
}, {
item_id: answer.userChoice
}
],function(error){
if (error) throw error;
connection.query('SELECT * FROM inventory WHERE ?', [
{
item_id: answer.userChoice
}
] ,function(err, res){
if (err) throw err;
let table2 = new Table({
head: ['No.', 'Product', 'Department', 'Price', 'Stock Quanity'],
colWidths: [5, 15, 15, 10, 15]
});
for (let i = 0; i < res.length; i++) {
table2.push(
[res[i].item_id, res[i].product_name, res[i].department_name, res[i].price, res[i].stock_quantity, res[i].product_sales]
);
}
console.log(chalk.white.bgGreen.bold('Success! Here is the updated inventory'));
console.log(table2.toString());
manager();
});
})
} else {
manageInv('increase');
}
});
});
}
if (input === 'add') {
inquirer.prompt([
{
type: 'input',
name: 'productName',
message: 'What is the new product called?'
}, {
type: 'input',
name: 'departmentName',
message: 'What department does it belong to?'
},{
type: 'input',
name: 'productCost',
message: 'How much does it cost?'
}, {
type: 'input',
name: 'stockQuantity',
message: 'How many?'
}, {
type: 'confirm',
name: 'confirmation',
message: 'Are you sure?'
}
]).then(function(answer){
if (answer.confirmation) {
var queryString = 'INSERT INTO inventory (product_name, department_name, price, stock_quantity) VALUES ("' + answer.productName + '", "' + answer.departmentName + '", ' + answer.productCost + ', ' + answer.stockQuantity + ')';
connection.query(queryString, function(err){
if (err) throw err;
manager();
});
} else {
manageInv('add')
}
});
}
}
function salesByDept(){
connection.query('SELECT d.department_id, d.department_name, d.over_head_costs, SUM(i.product_sales) as product_sales, d.over_head_costs - i.product_sales as total_profit FROM inventory i JOIN departments d ON d.department_name=i.department_name GROUP BY i.department_name ORDER BY d.department_id',
function(error, results){
if (error) throw error;
let table = new Table({
head: ['No.', 'Department', 'Overhead Costs', 'Product Sales', 'Total Profit'],
colWidths: [5, 20, 20, 20, 20]
});
for (let i = 0; i < results.length; i++) {
table.push(
[results[i].department_id, results[i].department_name, results[i].over_head_costs, results[i].over_head_costs, results[i].total_profit]
);
}
console.log(table.toString());
supervisor();
});
}
function createDept(){
inquirer.prompt([
{
type: 'input',
name: 'departmentName',
message: 'What is the name of the new department?'
}, {
type: 'input',
name: 'overheadCosts',
message: 'What is the overhead costs of the new department?'
}, {
type: 'confirm',
name: 'confirmation',
message: 'Are you sure?'
}
]).then(function(answer){
if (answer.confirmation) {
var queryString = 'INSERT INTO departments (department_name, over_head_costs) VALUES ("' + answer.departmentName + '", "' + answer.overheadCosts + '")';
connection.query(queryString, function(err){
if (err) throw err;
supervisor();
} else {
supervisor();
}
});
}
//======[INTERFACE FUNCTIONS]======
//display the welcome/type of user screen
function displayWelcome(){
console.log(chalk.yellow.bold(
"////////////////////////////////////////////////////////////////////////"
));
console.log(chalk.blue.bold(
"|||||| |||||||| || || |||||||| |||||||| |||||||| || ||"
));
console.log(chalk.blue.bold(
"|| || || || |||| |||| || || || || || |||| ||"
));
console.log(chalk.blue.bold(
"|| || || || || || || || || || || || || || ||"
));
console.log(chalk.blue.bold(
"|||||| |||||||| || || |||||||| |||| || || || ||||"
));
console.log(chalk.blue.bold(
"|| || || || || || || || || || || || ||"
));
console.log(chalk.blue.bold(
"|| || || || || || || || || || || || ||"
));
console.log(chalk.blue.bold(
"|||||| || || || || || || |||||||| |||||||| || ||"
));
console.log(chalk.yellow.bold(
"////////////////////////////////////////////////////////////////////////"
));
inquirer.prompt([
{
name: 'userChoice',
type: 'rawlist',
message: 'Please select your level of access',
choices: ['Customer', 'Manager', 'Supervisor']
}
]).then(function(answer){
switch (answer.userChoice) {
case 'Customer':
userStatus = 'customer';
customer();
break;
case 'Manager':
userStatus = 'manager';
manager();
break;
case 'Supervisor':
userStatus = 'supervisor';
supervisor();
break;
}
});
}
//IF costumer//////////////////
function customer(){
connection.query('SELECT * FROM inventory', function(error, results){
if (error) throw error;
let table = new Table({
head: ['No.', 'Product', 'Department', 'Price', 'Stock Quanity'],
colWidths: [5, 15, 15, 10, 15]
});
for (let i = 0; i < results.length; i++) {
table.push(
[results[i].item_id, results[i].product_name, results[i].department_name, results[i].price, results[i].stock_quantity, results[i].product_sales]
);
}
console.log(table.toString());
inquirer.prompt([
{
name: 'userChoice',
type:'input',
message: 'Please select an item to buy via its No.'
}, {
name: 'amount',
type: 'input',
message: 'How many would you like?'
}
]).then(function(answer){
itemIndex = parseInt(answer.userChoice) - 1;
if (parseInt(results[itemIndex].stock_quantity - answer.amount) <= 0) {
console.log(chalk.white.bgRed.bold('Not enough inventory available! Please make another selection'));
customer();
} else {
var newAmount = parseInt(results[itemIndex].stock_quantity - answer.amount);
var totalSale = parseInt(answer.amount) * parseInt(results[itemIndex].price) + parseInt(results[itemIndex].product_sales);
updateInventory(newAmount, totalSale, answer.userChoice);
answer.item = results[itemIndex].product_name;
answer.cost = parseInt(results[itemIndex].price * answer.amount);
}
return answer;
}).then(function(answer){
stayOrGo(answer);
});//--.then--
});//--connection.query--
}//--customer--
//IF manager//////////////////
function manager(){
inquirer.prompt([
{
name: 'userChoice',
type:'rawlist',
message: 'Please make a selection',
choices: ['View Products for Sale', 'View Low Inventory', 'Add to Inventory', 'Add New Product', 'Go Back']
},
]).then(function(answer){
switch (answer.userChoice) {
case 'View Products for Sale':
showInv('all');
break;
case 'View Low Inventory':
showInv('low');
break;
case 'Add to Inventory':
manageInv('increase');
break;
case 'Add New Product':
manageInv('add');
break;
case 'Go Back':
displayWelcome();
break;
}
});
}
//IF supervisor//////////////////
function supervisor(){
inquirer.prompt([
{
type: 'rawlist',
name: 'userChoice',
message: 'Please select an option',
choices: ['View Product Sales by Department', 'Create New Department', 'Go Back']
}
]).then(function(answer){
switch (answer.userChoice) {
case 'View Product Sales by Department':
salesByDept();
break;
case 'Create New Department':
createDept();
break;
case 'Go Back':
displayWelcome();
break;
}
});
}
//display options
connectToDB();