server.js

/*********************************************************************************
 * * WEB422 – Assignment 1
 * * I declare that this assignment is my own work in accordance with Seneca Academic Policy.
 * * No part of this assignment has been copied manually or electronically from any other source
 * * (including web sites) or distributed to other students.
 * *
 * * Name: Badal Sarkar       Student ID: 137226189          Date: January 13, 2020
 * * Heroku Link: https://secret-cliffs-75145.herokuapp.com/api/sales?page=1&perPage=5
 * ********************************************************************************/ 

const express = require("express");
const cors = require("cors");
const bodyParser = require("body-parser");
const dataService = require("./modules/data-service.js");

const myData = dataService('');

const app = express();

app.use(cors());

app.use(bodyParser.json());

const HTTP_PORT = process.env.PORT || 8080;

// ************* API Routes
// POST /api/sales (NOTE: This route must read the contents of the request body)
app.post('/api/sales', (req,res)=>{
    let data= req.body;
    myData.addNewSale(data).
        then(msg=>{
            res.json(msg);
        }).
        catch(err=>{
            res.json(err);
        });
});




// GET /api/sales (NOTE: This route must accept the numeric query parameters "page" and "perPage", ie: /api/sales?page=1&perPage=5 )
app.get('/api/sales', (req,res)=>{
    let query= req.query;
    myData.getAllSales(query.page, query.perPage).
        then(sales=>{
            res.json(sales);
        }).
        catch(err=>{
            res.json(err);
        });
});



// GET /api/sales (NOTE: This route must accept a numeric route parameter, ie: /api/sales/5bd761dcae323e45a93ccfe8)
app.get('/api/sales/:id', (req,res)=>{
    myData.getSaleById(req.params.id).
        then(sale=>{
            res.json(sale);
        }).
        catch(err=>{
            res.json(err);
        });
});



// PUT /api/sales (NOTE: This route must accept a numeric route parameter, ie: /api/sales/5bd761dcae323e45a93ccfe8 as well as read the contents of the request body)
app.put('/api/sales/:id', (req,res)=>{
    myData.updateSaleById(req.body, req.params.id).
        then(data=>{
            res.json(data);
        }).
        catch(err=>{
            res.json(err);
        });
});


// DELETE /api/sales (NOTE: This route must accept a numeric route parameter, ie: /api/sales/5bd761dcae323e45a93ccfe8)
app.delete('/api/sales/:id', (req,res)=>{
    myData.deleteSaleById(req.params.id).
        then(data=>{
            res.json(data);
        }).
        catch(err=>{
            res.json(err);
        });
});


// ************* Initialize the Service & Start the Server

myData.initialize().then(()=>{
    app.listen(HTTP_PORT,()=>{
        console.log(`server listening on: ${HTTP_PORT}`);
    });
}).catch((err)=>{
    console.log(err);
});