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‎.gitignore‎

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cache
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node_modules
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images.json
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images.json

‎LICENSE.md‎

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The MIT License (MIT)
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Copyright (c) {{{year}}} {{{fullname}}}
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎README.md‎

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Unsplash It
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===========
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Beautiful placeholders using images from [unsplash](http://unsplash.com)

‎config.js‎

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module.exports = exports = {
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folder_path: '../unsplash-downloader/photos',
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max_height: 5000,
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max_width: 5000
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}

‎index.js‎

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var gm = require('gm');
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var fs = require('fs');
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var path = require('path');
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var sharp = require('sharp');
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var filequeue = require('filequeue');
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var imagesize = require('imagesize');
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var express = require('express')
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var config = require('./config');
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var pjson = require('./package.json');
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var fq = new filequeue(200);
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var app = express();
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var highestImageId = 0;
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try {
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var images = require('./images.json');
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} catch (e) {
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var images = [];
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}
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if (images.length != 0) {
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highestImageId = images.length;
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}
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var checkParameters = function (params, callback) {
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if (!params.width || !params.height || isNaN(parseInt(params.width)) || isNaN(parseInt(params.height))) {
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return callback(true, 400, 'Invalid arguments');
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}
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if (params.width > config.max_height || params.height > config.max_width) {
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return callback(true, 413, 'Specified dimensions too large');
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}
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callback(false);
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}
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var displayError = function (res, code, message) {
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res.status(code);
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res.send({ error: message });
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}
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var findMatchingImage = function (id, callback) {
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var matchingImages = images.filter(function (image) { return image.id == id; });
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if (matchingImages.length == 0) {
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return callback(true);
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}
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callback(null, matchingImages[0].filename);
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}
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var getDestination = function (width, height, filePath, prefix) {
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return 'cache/' + prefix + path.basename(filePath, path.extname(filePath)) + '-' + width + 'x' + height + path.extname(filePath);
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}
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var getShortDestination = function (width, height, filePath, prefix) {
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return 'cache/' + prefix + width + '^' + height + path.extname(filePath);
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}
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var getAndCheckDestination = function (width, height, filePath, prefix, shortName, callback) {
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var destination = shortName ? getShortDestination(width, height, filePath, prefix) : getDestination(width, height, filePath, prefix);
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fs.exists(destination, function (exists) {
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callback(exists, destination);
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})
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}
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var imageResize = function (width, height, filePath, destination, callback) {
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try {
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sharp(filePath).rotate().resize(width, height).crop().progressive().toFile(destination, function (err) {
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callback(err, destination);
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});
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} catch (e) {
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callback(e, null);
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}
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}
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var getProcessedImage = function (width, height, filePath, shortName, callback) {
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getAndCheckDestination(width, height, filePath, '', shortName, function (exists, destination) {
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if (exists) {
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return callback(null, destination);
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}
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imageResize(width, height, filePath, destination, function (err, destination) {
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if (err) {
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return callback(err);
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}
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callback(null, destination);
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})
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})
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}
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var getProcessedGrayImage = function (width, height, filePath, shortName, callback) {
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getAndCheckDestination(width, height, filePath, 'gray-', shortName, function (exists, destination) {
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if (exists) {
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return callback(null, destination);
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}
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imageResize(width, height, filePath, destination, function (err, destination) {
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if (err) {
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return callback(err);
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}
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gm(destination).colorspace('GRAY').write(destination, function (err) {
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if (err) {
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return callback(err);
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}
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callback(null, destination);
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})
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})
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})
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}
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var endsWith = function (str, suffix) {
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return str.indexOf(suffix, str.length - suffix.length) !== -1;
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}
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var scanDirectory = function (dir, done) {
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var results = [];
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fs.readdir(dir, function (err, list) {
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if (err) {
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return done(err);
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}
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var pending = list.length;
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if (!pending) {
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return done (null, results);
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}
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list.forEach(function (file) {
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file = path.resolve(dir, file);
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fs.stat(file, function (err, stat) {
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if (stat && stat.isFile() && !endsWith(file, '.DS_Store')) {
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results.push(file);
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}
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if (!--pending) done(null, results);
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});
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});
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});
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};
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var imageScan = function () {
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scanDirectory(config.folder_path, function (err, results) {
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if (err) throw err;
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var filteredResults = results.filter(function (filename) {
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return images.filter(function (image) { return image.filename == filename; }) == 0;
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});
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var left = filteredResults.length;
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filteredResults.forEach(function (filename) {
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var rs = fq.createReadStream(filename);
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imagesize(rs, function (err, result) {
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if (err) {
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return console.log(err);
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}
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console.log(filename);
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result.filename = filename;
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result.id = highestImageId++;
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images.push(result);
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if (!--left) {
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fs.writeFile('images.json', JSON.stringify(images), 'utf8', function (err) {});
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}
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});
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});
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});
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}
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app.get('/', function (req, res, next) {
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res.sendFile('public/index.html', { root: '.'} );
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})
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app.get('/list', function (req, res, next) {
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var newImages = [];
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for (var i in images) {
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var item = images[i];
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var image = {
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format: item.format,
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width: item.width,
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height: item.height,
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filename: path.basename(item.filename),
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id: item.id
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}
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newImages.push(image);
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}
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res.jsonp(newImages);
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})
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app.get('/:width/:height', function (req, res, next) {
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checkParameters(req.params, function (err, code, message) {
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if (err) {
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return displayError(res, code, message);
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}
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var filePath;
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if (req.query.image) {
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findMatchingImage(req.query.image, function (err, matchingImage) {
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if (err) {
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return displayError(res, 400, 'Invalid image id');
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}
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filePath = matchingImage;
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})
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} else {
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filePath = images[Math.floor(Math.random() * images.length)].filename;
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}
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getProcessedImage(req.params.width, req.params.height, filePath, (!req.query.image && !req.query.random && req.query.random != ''), function (err, imagePath) {
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if (err) {
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return displayError(res, 500, 'Something went wrong');
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}
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res.sendFile(imagePath, { root: '.' });
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})
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})
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})
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app.get('/g/:width/:height', function (req, res, next) {
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checkParameters(req.params, function (err, code, message) {
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if (err) {
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return displayError(res, code, message);
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}
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var filePath;
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if (req.query.image) {
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findMatchingImage(req.query.image, function (err, matchingImage) {
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if (err) {
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return displayError(res, 400, 'Invalid image id');
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}
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filePath = matchingImage;
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})
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} else {
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filePath = images[Math.floor(Math.random() * images.length)].filename;
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}
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getProcessedGrayImage(req.params.width, req.params.height, filePath, (!req.query.image && !req.query.random && req.query.random != ''), function (err, imagePath) {
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if (err) {
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return displayError(res, 500, 'Something went wrong');
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}
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res.sendFile(imagePath, { root: '.' });
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})
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})
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})
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app.get('*', function (req, res, next) {
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res.status(404);
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res.send({ error: 'Resource not found' });
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})
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imageScan();
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app.listen(process.env.PORT || 5000);

‎package.json‎

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{
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"name": "unsplash-it",
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"version": "0.0.1",
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1",
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"start": "node index.js"
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},
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"repository": {
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"type": "git",
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"url": "https://github.com/DMarby/unsplash-it.git"
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},
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"author": "David Marby <david@dmarby.se> http://dmarby.se",
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"dependencies": {
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"gm": "^1.16.0",
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"filequeue": "^0.5.0",
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"imagesize": "^1.0.0",
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"express": "^4.8.2",
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"sharp": "^0.5.2"
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}
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}

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