From c78b4b75cb78227687f328d39d2eb6e2aeba5a82 Mon Sep 17 00:00:00 2001 From: Robbie Antenesse Date: Tue, 18 Dec 2018 13:18:06 -0700 Subject: [PATCH] Start puzzling out events --- package.json | 10 +- public/files/.gitkeep | 0 public/history/.gitkeep | 0 server.js | 77 +++++ settings.json | 7 + yarn.lock | 689 ++++++++++++++++++++++++++++++++++++++++ 6 files changed, 781 insertions(+), 2 deletions(-) create mode 100644 public/files/.gitkeep create mode 100644 public/history/.gitkeep create mode 100644 server.js create mode 100644 settings.json create mode 100644 yarn.lock diff --git a/package.json b/package.json index 69027c2..c22b1a1 100644 --- a/package.json +++ b/package.json @@ -2,8 +2,14 @@ "name": "little-library", "version": "0.0.0", "description": "A digital give-a-book, take-a-book library for ebooks", - "main": "index.js", + "main": "src/index.js", "repository": "https://github.com/Alamantus/little-library.git", "author": "Robbie Antenesse ", - "license": "MIT" + "license": "MIT", + "dependencies": { + "express": "^4.16.4", + "helmet": "^3.15.0", + "socket.io": "^2.2.0", + "socket.io-client": "^2.2.0" + } } diff --git a/public/files/.gitkeep b/public/files/.gitkeep new file mode 100644 index 0000000..e69de29 diff --git a/public/history/.gitkeep b/public/history/.gitkeep new file mode 100644 index 0000000..e69de29 diff --git a/server.js b/server.js new file mode 100644 index 0000000..02a9465 --- /dev/null +++ b/server.js @@ -0,0 +1,77 @@ +const path = require('path'); +const fs = require('fs'); +const express = require('express'); +const http = require('http'); +const socketio = require('socket.io'); +const helmet = require('helmet'); + +const settings = require('./settings.json'); + +function Server () { + this.server = express(); + this.http = http.Server(this.server); + this.io = socketio(this.http); + + this.fileLocation = path.resolve(settings.fileLocation); + this.historyLocation = path.resolve(settings.historyLocation); + + this.server.use(helmet()); + this.server.use(express.static(path.join(__dirname, './public/'))); + + this.server.get('/', (req, res) => { + const page = path.join(__dirname, './public/index.html'); + res.sendFile(page); + }); + + this.io.on('connection', socket => { + this.broadcastVisitors(); + + socket.on('take book', bookId => { + if (this.takeBook(bookId)) { + console.log('deleted ' + bookId); + } + }); + + socket.on('disconnect', () => { + this.broadcastVisitors(); + }); + }); +} + +Server.prototype.broadcastVisitors = function () { + const numberConnected = this.io.of('/').clients().connected.length; + this.io.emit('connected', numberConnected); +} + +Server.prototype.start = function () { + this.http.listen(settings.port, () => { + console.log('Started server on port ' + settings.port); + }); +} + +Server.prototype.takeBook = function (bookId) { + const bookDataPath = path.resolve(this.fileLocation, bookId, '.json'); + if (fs.existsSync(bookDataPath)) { + const bookDataRaw = fs.readFileSync(bookDataPath); + if (bookDataRaw) { + const bookData = JSON.parse(bookDataRaw); + const bookPath = path.resolve(this.fileLocation, bookId, bookData.fileType); + if (fs.existsSync(bookPath)) { + // Deleting right away won't work because we need download confirmation. + fs.unlinkSync(bookPath); + fs.renameSync(bookDataPath, path.resolve(this.historyLocation, bookId, '.json')); + return true; + } + } + } + + return false; +} + +Server.prototype.uuid4 = function () { + // https://stackoverflow.com/a/2117523 + return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) { + var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8); + return v.toString(16); + }); +} diff --git a/settings.json b/settings.json new file mode 100644 index 0000000..9652e7e --- /dev/null +++ b/settings.json @@ -0,0 +1,7 @@ +{ + "port": 3000, + "fileLocation": "./public/files/", + "historyLocation": "./public/history/", + "maxLibrarySize": 0, + "maxFileSize": 0 +} \ No newline at end of file diff --git a/yarn.lock b/yarn.lock new file mode 100644 index 0000000..27c1e2c --- /dev/null +++ b/yarn.lock @@ -0,0 +1,689 @@ +# THIS IS AN AUTOGENERATED FILE. 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