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server.js
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server.js
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// Dependencies
const inquirer = require("inquirer");
const mysql = require("mysql2");
const consoleTable = require("console.table");
// Connect to database
const db = mysql.createConnection(
{
host: "localhost",
user: "root",
password: "Washington24!",
database: "employees_db",
},
console.log(`Connected to the employees_db database.`)
);
db.connect(function (err) {
if (err) throw err;
console.log("**************************************");
console.log(" EMPLOYEE TRACKER ");
console.log("**************************************");
startingQuestion();
});
// Starting Question
function startingQuestion() {
inquirer.prompt([
{
type: 'list',
name: 'intro',
message: 'What would you like to do?',
choices:[
'View All Employees',
'Add Employee',
'Update Employee Role',
'View All Roles',
'Add Role',
'View All Departments',
'Add Department',
'Quit'
]
}
]).then((answer) => {
switch(answer.intro) {
case 'View All Employees':
viewEmployees();
break;
case 'Add Employee':
addEmployee();
break;
case 'Update Employee Role':
updateRole();
break;
case 'View All Roles':
viewRoles();
break;
case 'Add Role':
addRole();
break;
case 'View All Departments':
viewDepartments();
break;
case 'Add Department':
addDepartment();
break;
case 'Quit':
console.log('Good-Bye!');
db.end();
break;
}
});
};
// Viewing
function viewDepartments() {
const sql = `SELECT department.id, department.name AS Department FROM department;`
db.query(sql, (err, res) => {
if (err) {
console.log(err);
return;
}
console.table(res);
startingQuestion();
});
};
function viewRoles() {
const sql = `SELECT role.id, role.title AS role, role.salary, department.name AS department FROM role INNER JOIN department ON (department.id = role.department_id);`;
db.query(sql, (err, res) => {
if (err) {
console.log(err);
return;
}
console.table(res);
startingQuestion();
});
};
function viewEmployees() {
const sql = `SELECT employee.id, employee.first_name, employee.last_name, role.title AS role, department.name AS department, role.salary, CONCAT(manager.first_name, ' ', manager.last_name) AS manager FROM employee LEFT JOIN employee manager on manager.id = employee.manager_id INNER JOIN role ON (role.id = employee.role_id) INNER JOIN department ON (department.id = role.department_id) ORDER BY employee.id;`
db.query(sql, (err, res) => {
if (err) {
console.log(err);
return;
}
console.table(res);
startingQuestion();
});
};
// Adding
function addDepartment() {
inquirer.prompt([
{
type: 'input',
name: 'department',
message: 'What is the name of the department?',
}
]).then((answer) => {
const sql = `INSERT INTO department(name) VALUES('${answer.department}');`
db.query(sql, (err, res) => {
if (err) {
console.log(err);
return;
}
console.log("Added " + answer.department + " to the database")
startingQuestion();
});
});
};
function addRole() {
const sql2 = `SELECT * FROM department`;
db.query(sql2, (error, response) => {
departmentList = response.map(departments => ({
name: departments.name,
value: departments.id
}));
return inquirer.prompt([
{
type: 'input',
name: 'title',
message: 'What is the name of the role?',
},
{
type: 'input',
name: 'salary',
message: 'What is the salary of the role?',
},
{
type: 'list',
name: 'department',
message: 'Which Department does the role belong to?',
choices: departmentList
}
]).then((answers) => {
const sql = `INSERT INTO role SET title='${answers.title}', salary= ${answers.salary}, department_id= ${answers.department};`
db.query(sql, (err, res) => {
if (err) {
console.log(err);
return;
}
console.log("Added " + answers.title + " to the database")
startingQuestion();
});
});
});
};
function addEmployee() {
const sql2 = `SELECT * FROM employee`;
db.query(sql2, (error, response) => {
employeeList = response.map(employees => ({
name: employees.first_name.concat(" ", employees.last_name),
value: employees.id
}));
const sql3 = `SELECT * FROM role`;
db.query(sql3, (error, response) => {
roleList = response.map(role => ({
name: role.title,
value: role.id
}));
return inquirer.prompt([
{
type: 'input',
name: 'first',
message: "What is the employee's first name?",
},
{
type: 'input',
name: 'last',
message: "What is the employee's last name?",
},
{
type: 'list',
name: 'role',
message: "What is the employee's role?",
choices: roleList
},
{
type: 'list',
name: 'manager',
message: "Who is the employee's manager?",
choices: employeeList
}
]).then((answers) => {
const sql = `INSERT INTO employee SET first_name='${answers.first}', last_name= '${answers.last}', role_id= ${answers.role}, manager_id=${answers.manager};`
db.query(sql, (err, res) => {
if (err) {
console.log(err);
return;
}
console.log("Added " + answers.first + " " + answers.last + " to the database")
startingQuestion();
});
});
});
});
};
// Updating
function updateRole() {
const sql2 = `SELECT * FROM employee`;
db.query(sql2, (error, response) => {
employeeList = response.map(employees => ({
name: employees.first_name.concat(" ", employees.last_name),
value: employees.id
}));
const sql3 = `SELECT * FROM role`;
db.query(sql3, (error, response) => {
roleList = response.map(role => ({
name: role.title,
value: role.id
}));
return inquirer.prompt([
{
type: 'list',
name: 'employee',
message: "Which employee's role do you want to update?",
choices: employeeList
},
{
type: 'list',
name: 'role',
message: "Which role do you want to assign the selected employee?",
choices: roleList
},
{
type: 'list',
name: 'manager',
message: "Who will be this employee's manager?",
choices: employeeList
},
]).then((answers) => {
const sql = `UPDATE employee SET role_id= ${answers.role}, manager_id=${answers.manager} WHERE id =${answers.employee};`
db.query(sql, (err, res) => {
if (err) {
console.log(err);
return;
}
console.log("Employee role updated")
startingQuestion();
});
});
});
});
};