/
booking.pl
680 lines (632 loc) · 23.8 KB
/
booking.pl
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%% Connection ref https://github.com/JanWielemaker/swi-chat
:- module(booking_server,
[ server/0,
server/1,
create_booking/0
]).
:- use_module(library(http/thread_httpd)).
:- use_module(library(http/http_dispatch)).
:- use_module(library(http/websocket)).
:- use_module(library(http/html_write)).
:- use_module(library(http/js_write)).
:- use_module(library(http/hub)).
:- use_module(library(debug)).
server :-
server(3080).
server(Port) :-
( current_prolog_flag(gui, true)
-> prolog_ide(thread_monitor)
; true
),
create_booking,
http_server(http_dispatch, [port(Port)]).
:- http_handler(root(.), booking_page, []).
:- http_handler(root(booking),
http_upgrade_to_websocket(
accept_booking,
[ guarded(false),
subprotocols([booking])
]),
[ id(booking_websocket)
]).
booking_page(_Request) :-
reply_html_page(
title('SWI-Prolog Booking Demo'),
\booking_page).
booking_page -->
style,
html([ h1([id(header)], ['Prolog Hotel Booking'] ),
div([ id(bookingMain) ], [
div([ id(row1) ], [
div([ id(booking1) ], [
div([ id(image1)] , []),
div([ id(form)] , [
div([ id(info) ], [
div([ id(infodet)], [
h3(id = hotelHeader, ['Hotel 1'])
]),
br([]),
div([ id(infodet)], [
h4(id = heading4, ['Room Max Occupancy']),
h4(id = heading4, ['Price'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['1']),
b(id = heading6, ['$50'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['2']),
b(id = heading6, ['$150'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['3']),
b(id = heading6, ['$300'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['4']),
b(id = heading6, ['$500'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['Address']),
b(id = heading6, ['1935, Lower Mall.'])
])
]),
button([id(book1)], ['Book Now'])
])
]),
div([ id(booking1) ], [
div([ id(image2)] , []),
div([ id(form)], [
div([ id(info) ], [
div([ id(infodet)], [
h3(id = hotelHeader, ['Hotel 2'])
]),
br([]),
div([ id(infodet)], [
h4(id = heading4, ['Room Max Occupancy']),
h4(id = heading4, ['Price'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['1']),
b(id = heading6, ['$100'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['2']),
b(id = heading6, ['$200'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['3']),
b(id = heading6, ['$300'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['4']),
b(id = heading6, ['$400'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['Address']),
b(id = heading6, ['2525, West Mall.'])
])
]),
button([id(book2)], ['Book Now'])
])
])
]),
div([ id(row2) ], [
div([ id(booking1) ], [
div([ id(image3)] , []),
div([ id(form)], [
div([ id(info) ], [
div([ id(infodet)], [
h3(id = hotelHeader, ['Hotel 3'])
]),
br([]),
div([ id(infodet)], [
h4(id = heading4, ['Room Max Occupancy']),
h4(id = heading4, ['Price'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['1']),
b(id = heading6, ['$200'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['2']),
b(id = heading6, ['$400'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['3']),
b(id = heading6, ['$600'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['4']),
b(id = heading6, ['$800'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['Address']),
b(id = heading6, ['6363, Agronomy Rd.'])
])
]),
button([id(book3)], ['Book Now'])
])
]),
div([ id(booking1) ], [
div([ id(image4)] , []),
div([ id(form)] , [
div([ id(info) ], [
div([ id(infodet)], [
h3(id = hotelHeader, ['Hotel 4'])
]),
br([]),
div([ id(infodet)], [
h4(id = heading4, ['Room Max Occupancy']),
h4(id = heading4, ['Price'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['3']),
b(id = heading6, ['$300'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['4']),
b(id = heading6, ['$400'])
]),
br([]),
div([ id(infodet)], [
b(id = heading6, ['Address']),
b(id = heading6, ['5960, Student Union Blvd.'])
])
]),
button([id(book4)], ['Book Now'])
])
])
])
]),
div([ id = 'modal' ], [
div([ id = 'modal-content'], [
form([ id(form) ], [
label(for = 'name', 'Name'),
br([]),
input([id = 'nameinput', type = 'text', placeholder = 'Name', name = 'name', required]),
br([]),
label(for = 'people', 'Number of people'),
br([]),
input([id = 'peopleinput', type = 'number', placeholder = 'People', name = 'people', required]),
br([]),
label(for = 'check-in', 'Check-in date'),
br([]),
input([id = 'checkininput', type = 'number', placeholder = 'Check-in', name = 'check-in', required]),
br([]),
label(for = duration, 'How long is your stay?'),
br([]),
input([id = 'durationinput', type = 'number', placeholder = 'Duration', name = 'duration', required]),
br([]),
br([]),
button([id = 'submit-form', type = 'submit', onclick = 'submitBookingForm(event)'], ['Submit'])
])
])
]),
div([ id(footer) ], [
button([id(output), onclick = 'downloadBookings()'], ['Optimize bookings'])
])
]),
script.
style -->
html(style(['body,html {
height:100%;
overflow-y: scroll;
font-family: sans-serif;
background: url(https://freefrontend.com/assets/img/css-hero-effects/Diagonal-Hero-Div-With-CSS-Star-Animation-Background.gif) no-repeat center center;
background-size: cover;
margin: 0px;
}\n',
'#header{
padding-left: 30px;
color: white;
}\n',
'#bookingMain {
height: 100vh;
margin-top: -20px;
display: flex;
flex-direction: column;
justify-content: space-evenly;
margin-left: 50px;
margin-right: 50px;
}\n',
'#row1 {
display: flex;
justify-content: space-evenly;
}\n',
'#row2 {
display: flex;
justify-content: space-evenly;
}\n',
'#booking1 {
border: solid 6px lightgray;
padding: 5px;
height: 320px;
width: 650px;
border-radius: 10px;
background-color: whitesmoke;
display: flex;
}\n',
'#hotelHeader {
position: relative;
top: -20px;
height: -15px;
margin: 0px;
padding: 0px;
}\n',
'#heading4 {
position: relative;
top: -25px;
margin: 0px;
padding: 0px;
}\n',
'#heading6 {
position: relative;
top: -30px;
margin: 0px;
padding: 0px;
}\n',
'#image1 {
height: 100%;
width: 500px;
border-radius: 10px;
background-color: grey;
background: url(https://www.freevector.com/uploads/vector/preview/28404/3d4.jpg);
background-size: cover;
}\n',
'#image2 {
height: 100%;
width: 500px;
border-radius: 10px;
background-color: grey;
background: url(https://image.freepik.com/free-vector/isometric-hotel-building_23-2148163848.jpg) no-repeat center center;
background-size: 122%;
}\n',
'#image3 {
height: 100%;
width: 500px;
border-radius: 10px;
background-color: grey;
background: url(https://www.freevector.com/uploads/vector/preview/28436/3D5.jpg) no-repeat center center;
background-size: cover;
}\n',
'#image4 {
height: 100%;
width: 500px;
border-radius: 10px;
background-color: grey;
background: url(https://img.freepik.com/free-vector/hotel-building-isometric_98292-5172.jpg?size=338&ext=jpg) no-repeat center center;
background-size: cover;
}\n',
'#info {
width: 290px;
display: flex;
justify-content: space-between;
flex-direction: column;
padding: 20px;
height: 125px;
padding-bottom: 100px;
}\n',
'#infodet {
height: auto;
margin: 0px;
display: flex;
justify-content: space-between;
padding-right: 20px;
}\n',
'#book1 {
height: 30px;
border-color: #2b6dd6;
width: 300px;
background-color: #2b6dd6;
color: white;
border-radius: 10px;
outline: none;
}\n',
'#book2 {
height: 30px;
border-color: #2b6dd6;
width: 300px;
background-color: #2b6dd6;
color: white;
border-radius: 10px;
outline: none;
}\n',
'#book3 {
height: 30px;
border-color: #2b6dd6;
width: 300px;
background-color: #2b6dd6;
color: white;
border-radius: 10px;
outline: none;
}\n',
'#book4 {
height: 30px;
border-color: #2b6dd6;
width: 300px;
background-color: #2b6dd6;
color: white;
border-radius: 10px;
outline: none;
}\n',
'#form {
width: 300px;
padding: 20px;
}\n',
'#modal{
display: none;
position: fixed;
left: 0;
top: 0;
width: 100%;
height: 100%;
z-index: 1;
overflow: hidden;
background-color: rgba(0,0,0,0.4);
}\n',
'#modal-content{
background-color: #fefefe;
margin: 10% auto; /* 15% from the top and centered */
padding: 20px;
border: 1px solid #888;
width: 500px;
animation-name: animatetop;
animation-duration: 0.4s
}\n',
'#form-container{
max-width: 300px;
padding: 10px;
background-color: white;
}\n',
'input{
width: 250px;
outline: none;
padding: 15px;
margin: 5px 0 22px 0;
border: none;
background: #f1f1f1;
}\n',
'#submit-form{
background-color: #2b6dd6;
color: white;
outline: none;
padding: 16px 20px;
cursor: pointer;
width: 94%;
margin-bottom:10px;
opacity: 0.8;
border-radius: 10px;
}\n',
'@keyframes animatetop {
from {top: -300px; opacity: 0}
to {top: 0; opacity: 1}
}',
'#footer{
background-color: #000000;
height: 140px;
width: 100%;
display: flex;
justify-content: center;
margin-top: 20px;
}\n',
'#output{
background-color: #2b6dd6;
color: white;
border-color: #2b6dd6;
outline: none;
width: 200px;
margin-top: 40px;
height: 50px;
border-radius: 30px;
}\n'
])).
script -->
{ http_link_to_id(booking_websocket, [], WebSocketURL) },
js_script({|javascript(WebSocketURL)||
function openWebSocket() {
connection = new WebSocket("ws://"+window.location.host+WebSocketURL,
['booking']);
console.log("connect");
connection.onerror = function (error) {
console.log('WebSocket Error ' + error);
};
}
var optimize = '';
window.KnowledgeBase1 = `room(r4, 4, 500).
room(r1, 1, 50).
room(r2, 2, 150).
room(r3, 3, 300).
`;
window.KnowledgeBase2 = `room(r4, 4, 400).
room(r1, 1, 100).
room(r2, 2, 200).
room(r3, 3, 300).
`;
window.KnowledgeBase3 = `room(r4, 4, 800).
room(r1, 1, 200).
room(r2, 2, 400).
room(r3, 3, 600).
`;
window.KnowledgeBase4 = `room(r4, 4, 400).
room(r3, 3, 300).
`;
window.activeHotel;
var modal = document.getElementById("modal");
var btnModal1 = document.getElementById("book1");
var btnModal2 = document.getElementById("book2");
var btnModal3 = document.getElementById("book3");
var btnModal4 = document.getElementById("book4");
btnModal1.onclick = function(event) {
window.activeHotel = 1;
modal.style.display = "block";
}
submitBookingForm = function(event) {
event.preventDefault();
let numpeople = document.getElementById('peopleinput');
let checkin = document.getElementById('checkininput');
let duration = document.getElementById('durationinput');
let name = document.getElementById('nameinput');
document.getElementById("modal").style.display = "none";
if (window.activeHotel == 1){
window.KnowledgeBase1 += 'booking('+name.value.toLowerCase()+','+numpeople.value+','+checkin.value+','+duration.value+').\n';
name.value = null;
numpeople.value = null;
checkin.value = null;
duration.value = null;
} else if (window.activeHotel == 2){
window.KnowledgeBase2 += 'booking('+name.value.toLowerCase()+','+numpeople.value+','+checkin.value+','+duration.value+').\n';
name.value = null;
numpeople.value = null;
checkin.value = null;
duration.value = null;
} else if (window.activeHotel == 3){
window.KnowledgeBase3 += 'booking('+name.value.toLowerCase()+','+numpeople.value+','+checkin.value+','+duration.value+').\n';
name.value = null;
numpeople.value = null;
checkin.value = null;
duration.value = null;
} else {
window.KnowledgeBase4 += 'booking('+name.value.toLowerCase()+','+numpeople.value+','+checkin.value+','+duration.value+').\n';
name.value = null;
numpeople.value = null;
checkin.value = null;
duration.value = null;
}
}
btnModal2.onclick = function(event) {
window.activeHotel = 2;
modal.style.display = "block";
}
btnModal3.onclick = function(event) {
window.activeHotel = 3;
modal.style.display = "block";
}
btnModal4.onclick = function(event) {
window.activeHotel = 4
modal.style.display = "block";
}
window.onclick = function(event) {
if(event.target == modal)
modal.style.display = "none";
}
downloadBookings = function() {
optimize+=`
fitsroom(P, R, D) :-
booking(P, N, D, _),
room(R, C, _),
N =< C.
roomsok([]).
roomsok([(_, R1, D)|B]) :-
\\+ member((_,R1, D), B),
roomsok(B).
peopleok([]).
peopleok([(P, _, D)|B]) :-
\\+ member((P, _, D), B),
peopleok(B).
consistentdates([]).
consistentdates([(P, R, D)|B]):-
booking(P, _, D, L),
E is D + L - 1,
foreach(between(D, E, D1), not(member((_, R, D1), B))),
consistentdates(B).
consistentrooms([]).
consistentrooms([(P, R1, _)|B]):-
foreach(member((P,R2, _), B), R1 = R2),
consistentrooms(B).
validbooking(B) :-
sort(2, @=<, B, Bs),
consistentdates(Bs),
peopleok(Bs).
% https://rosettacode.org/wiki/Power_set#Prolog
powerset(X,Y) :- bagof( S, (subseq(S,X), validbooking(S)), Y).
subseq( [], []).
subseq( [], [_|_]).
subseq( [X|Xs], [X|Ys] ) :- subseq(Xs, Ys).
subseq( [X|Xs], [_|Ys] ) :- append(_, [X|Zs], Ys), subseq(Xs, Zs).
lenlist([], 0).
lenlist([_|T], N):-
lenlist(T, X),
N is X + 1.
sumcost([],0).
sumcost([(P,R1, _)|T], C):-
room(R1, _, Y),
booking(P, _, _, D),
sumcost(T, X),
C is X + Y*D.
maxfirst(M, M1):-
sumcost(M, L),
sumcost(M1, L1),
L >= L1.
maximize([], []).
maximize(L, M) :-
member(M, L),
foreach(member(M1, L), maxfirst(M, M1)).
allvalidbook(Bestbooking, Total):-
findall((Person, Room, D), (fitsroom(Person, Room, D)), Bag),
powerset(Bag,Y),
maximize(Y, Bestbooking),
sumcost(Bestbooking, Total).`
let hotel1 = document.createElement('a');
hotel1.download = 'h1optimizebookings.pl';
KnowledgeBase1+= optimize;
hotel1.href = "data:application/octet-stream,"+encodeURIComponent(KnowledgeBase1);
hotel1.click();
let hotel2 = document.createElement('a');
hotel2.download = 'h2optimizebookings.pl';
KnowledgeBase2+= optimize;
hotel2.href = "data:application/octet-stream,"+encodeURIComponent(KnowledgeBase2);
hotel2.click();
let hotel3 = document.createElement('a');
hotel3.download = 'h3optimizebookings.pl';
KnowledgeBase3+= optimize;
hotel3.href = "data:application/octet-stream,"+encodeURIComponent(KnowledgeBase3);
hotel3.click();
let hotel4 = document.createElement('a');
hotel4.download = 'h4optimizebookings.pl';
KnowledgeBase4+= optimize;
hotel4.href = "data:application/octet-stream,"+encodeURIComponent(KnowledgeBase4);
hotel4.click();
window.KnowledgeBase1 = `room(r4, 4, 500).
room(r1, 1, 50).
room(r2, 2, 150).
room(r3, 3, 300).
`;
window.KnowledgeBase2 = `room(r4, 4, 400).
room(r1, 1, 100).
room(r2, 2, 200).
room(r3, 3, 300).
`;
window.KnowledgeBase3 = `room(r4, 4, 800).
room(r1, 1, 200).
room(r2, 2, 400).
room(r3, 3, 600).
`;
window.KnowledgeBase4 = `room(r4, 4, 400).
room(r3, 3, 300).
`;
}
window.addEventListener("DOMContentLoaded", openWebSocket, false);
|}).
accept_booking(WebSocket) :-
hub_add(booking, WebSocket, _Id).
create_booking :-
hub_create(booking, Page, _{}),
thread_create(create_booking(Page), _, [alias(booking)]).