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/**
* Server side code using the express framework running on a Node.js server.
*
* Load the express framework and create an app.
*/
const express = require('express');
const app = express();
const dbUtils = require('./mongodbFunctions.js');
/**
* Import the dummy attractions in the database
*
*/
dbUtils.clearMainDataBaseAndInsertDummyForTestingTheSite();
/**
* Host all files in the client folder as static resources.
* That means: localhost:8080/someFileName.js corresponds to client/someFileName.js.
*/
app.use(express.static('client'));
/**
* Allow express to understand json serialization.
*/
app.use(express.json());
/**
* A route is like a method call. It has a name, some parameters and some return value.
*
* Name: /api/attractions
* Parameters: the request as made by the browser
* Return value: the list of attractions defined above as JSON
*
* In addition to this, it has a HTTP method: GET, POST, PUT, DELETE
*
* Whenever we make a request to our server,
* the Express framework will call one of the methods defined here.
* These are just regular functions. You can edit, expand or rewrite the code here as needed.
*/
// main.js
app.get("/api/attractions", async function (request, response) {
console.log("Api call received for /attractions");
const attractions = await dbUtils.connectToDatabaseAndDo(
(db) => {return db.collection("attractions").find().toArray()}
);
response.json(attractions);
});
app.post("/api/placeorder", async function (request, response) {
console.log("Api call received for /placeorder");
var orders = request.body;
for (let i = 0; i < orders.length; i++) {
const order = orders[i];
await dbUtils.connectToDatabaseAndDo(
async (db) => {
const attractions = db.collection("attractions");
const attraction = await attractions.findOne({name: order.name});
// const availableAfterOrder = -1;
const availableAfterOrder = (attraction.available - order.numberOfKids - order.numberOfAdults);
if (availableAfterOrder < 0) {
response.sendStatus(403);
return;
}
}
);
}
if (response.statusCode === 200) {
console.log("---> valid order status so far is " + response.statusCode + ", adding to database");
for (let i = 0; i < orders.length; i++) {
orders[i] = dbUtils.giveUnique_idField(orders[i]);
const order = orders[i];
await dbUtils.connectToDatabaseAndDo(
async (db) => {
const attractions = db.collection("attractions");
const attraction = await attractions.findOne({name: order.name});
const currentOrders = attraction.orders;
const availableAfterOrder = (attraction.available - order.numberOfKids - order.numberOfAdults);
console.log("available after order: " + availableAfterOrder)
if (!currentOrders) {
attractions.updateOne(
{name: order.name},
{
$set: {orders: [order._id], available: availableAfterOrder}
}
)
} else {
attractions.updateOne(
{name: order.name},
{
$set: {orders: currentOrders.push(order._id), available: availableAfterOrder}
}
)
}
}
);
}
await dbUtils.connectToDatabaseAndDo(db => {return db.collection("orders").insertMany(orders)});
response.sendStatus(200);
} else {
console.log("---> invalid order status so far is " + response.statusCode)
}
});
app.get("/api/myorders", async function (request, response) {
console.log("Api call received for /myorders");
const orders = await dbUtils.connectToDatabaseAndDo(
db => {return db.collection("orders").find().toArray()}
);
response.json(orders);
});
app.post("/api/admin/edit", function (request, response) {
console.log("Api call received for /admin/edit");
const name = request.body.name;
const field = request.body.field;
const value = request.body.value;
const updateObject = {};
updateObject[field] = value
if (value >= 0) {
dbUtils.connectToDatabaseAndDo(
db => {
const attractions = db.collection("attractions");
attractions.updateOne(
{name: name},
{
$set: updateObject
}
)
}
)
} else {
response.sendStatus(403);
return;
}
response.sendStatus(200);
});
app.post("/api/admin/delete", function (request, response) {
console.log("Api call received for /admin/delete");
const name = request.body.name;
dbUtils.connectToDatabaseAndDo(
db => {
const attractions = db.collection("attractions");
attractions.deleteOne({name: name});
}
);
response.sendStatus(200);
});
app.post("/api/admin/add", function (request, response) {
console.log("Api call received for /admin/add");
const name = request.body.name;
const description = request.body.description;
const lat = request.body.lat;
const lon = request.body.long;
const attraction = {
name: name,
description: description,
adultPrice: 0,
kidsPrice: 0,
minimumNumberOfAdults: 0,
minimumNumberOfKids: 0,
discount: 0,
available: 0,
location: {
lat: lat,
lon: lon,
}
}
dbUtils.connectToDatabaseAndDo(
db => {
const attractions = db.collection("attractions");
attractions.insertOne(attraction);
}
);
response.json(attraction);
});
/**
* Make our webserver available on port 8000.
* Visit localhost:8000 in any browser to see your site!
*/
app.listen(8000, () => console.log('Example app listening on port 8000!'));
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