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little-library
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Handle maxLibrarySize and maxHistory

This commit is contained in:
Robbie Antenesse 2019-01-04 15:08:41 -07:00
parent 37ffb3144c
commit 8be48072df
1 changed files with 56 additions and 6 deletions
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62
server.js
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@ -57,7 +57,9 @@ function Server () {
this.server.get('/give', (req, res) => {
const resourcePath = (req.url.substr(-1) === '/' ? '../' : './');
const body = this.fillTemplate('./templates/pages/uploadForm.html', { resourcePath });
let body = this.fillTemplate('./templates/pages/uploadForm.html', { resourcePath });
body = this.replaceBodyWithTooManyBooksWarning(body);
const html = this.fillTemplate('./templates/htmlContainer.html', { title: 'Give a Book', resourcePath, body });
res.send(html);
});
@ -79,7 +81,8 @@ function Server () {
isActive: 'is-active',
content: messageBox,
});
const body = this.fillTemplate('./templates/pages/uploadForm.html', { resourcePath });
let body = this.fillTemplate('./templates/pages/uploadForm.html', { resourcePath });
body = this.replaceBodyWithTooManyBooksWarning(body);
const html = this.fillTemplate('./templates/htmlContainer.html', { title: 'Give a Book', resourcePath, body, modal });
res.send(html);
}, (err) => {
@ -92,7 +95,8 @@ function Server () {
isActive: 'is-active',
content: messageBox,
});
const body = this.fillTemplate('./templates/pages/uploadForm.html', { resourcePath, title, author, summary, contributor });
let body = this.fillTemplate('./templates/pages/uploadForm.html', { resourcePath, title, author, summary, contributor });
body = this.replaceBodyWithTooManyBooksWarning(body);
const html = this.fillTemplate('./templates/htmlContainer.html', { title: 'Give a Book', resourcePath, body, modal });
res.send(html);
});
@ -112,7 +116,8 @@ function Server () {
header: 'Missing Required Fields',
message: errorMessage,
});
const body = this.fillTemplate('./templates/pages/uploadForm.html', { resourcePath, title, author, summary, contributor });
let body = this.fillTemplate('./templates/pages/uploadForm.html', { resourcePath, title, author, summary, contributor });
body = this.replaceBodyWithTooManyBooksWarning(body);
const html = this.fillTemplate('./templates/htmlContainer.html', { title: 'Give a Book', resourcePath, body, message });
res.send(html);
}
@ -291,8 +296,27 @@ Server.prototype.fillTemplate = function (file, templateVars = {}) {
return data;
}
Server.prototype.replaceBodyWithTooManyBooksWarning = function (body) {
if (settings.maxLibrarySize > 0) {
const numberOfBooks = fs.readdirSync(this.fileLocation).filter(fileName => fileName.includes('.json')).length;
if (numberOfBooks >= settings.maxLibrarySize) {
body = this.fillTemplate('./templates/elements/messageBox.html', {
style: 'is-danger',
title: 'Library Full',
message: 'Sorry, the library has reached its maximum capacity for books! You will need to wait until a book is taken before a new one can be added.',
});
}
}
return body;
}
Server.prototype.generateHomePage = function (req) {
const files = fs.readdirSync(this.fileLocation).filter(fileName => fileName.includes('.json'));
const files = fs.readdirSync(this.fileLocation).filter(fileName => fileName.includes('.json'))
.map(fileName => { // Cache the file data so sorting doesn't need to re-check each file
return { name: fileName, time: fs.statSync(path.resolve(this.fileLocation, fileName)).mtime.getTime() };
}).sort((a, b) => a.time - b.time).map(v => v.name); // Sort from oldest to newest.
let books = files.map(fileName => {
const bookData = JSON.parse(fs.readFileSync(path.resolve(this.fileLocation, fileName), 'utf8'));
if (bookData.hasOwnProperty('fileName')) return '';
@ -342,7 +366,11 @@ Server.prototype.generateHomePage = function (req) {
}
Server.prototype.generateHistoryPage = function (req) {
const files = fs.readdirSync(this.historyLocation).filter(fileName => fileName.includes('.json'));
const files = fs.readdirSync(this.historyLocation).filter(fileName => fileName.includes('.json'))
.map(fileName => { // Cache the file data so sorting doesn't need to re-check each file
return { name: fileName, time: fs.statSync(path.resolve(this.historyLocation, fileName)).mtime.getTime() };
}).sort((a, b) => b.time - a.time).map(v => v.name); // Sort from newest to oldest.
let history = files.map(fileName => {
const bookData = JSON.parse(fs.readFileSync(path.resolve(this.historyLocation, fileName), 'utf8'));
bookData.author = bookData.author ? bookData.author : '<em>author not provided</em>';
@ -460,6 +488,7 @@ Server.prototype.deleteBooks = function (socketId) {
fs.unlinkSync(bookPath);
// console.log('removed ' + bookPath);
fs.renameSync(bookDataPath, unusedFilename.sync(path.resolve(this.historyLocation, Date.now() + '.json')));
this.removeHistoryBeyondLimit();
});
if (check === false) {
console.log('couldn\'t find data.bookId');
@ -469,6 +498,27 @@ Server.prototype.deleteBooks = function (socketId) {
this.takenBooks = this.takenBooks.filter(data => data.socketId === socketId);
}
Server.prototype.removeHistoryBeyondLimit = function () {
if (settings.maxHistory > 0) {
let files = fs.readdirSync(this.historyLocation).filter(fileName => fileName.includes('.json'))
.map(fileName => { // Cache the file data so sorting doesn't need to re-check each file
return { name: fileName, time: fs.statSync(path.resolve(this.historyLocation, fileName)).mtime.getTime() };
}).sort((a, b) => b.time - a.time).map(v => v.name); // Sort from newest to oldest.
if (files.length > settings.maxHistory) {
files.slice(settings.maxHistory).forEach(fileName => {
const filePath = path.resolve(this.historyLocation, fileName);
fs.unlink(filePath, err => {
if (err) {
console.error(err);
} else {
console.log('Deleted ' + filePath);
}
})
});
}
}
}
Server.prototype.uuid4 = function () {
// https://stackoverflow.com/a/2117523
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {