const { serveClaimByName, serveClaimByClaimId, serveClaimByShortUrl } = require('../controllers/serveController.js'); const { postToStats, sendGoogleAnalytics } = require('../controllers/statsController.js'); const errorHandlers = require('../helpers/libraries/errorHandlers.js'); const { serveFile } = require('../helpers/libraries/serveHelpers.js'); const { showClaimByName, showClaimByClaimId, showClaimByShortUrl } = require('../controllers/showController.js'); const logger = require('winston'); function retrieveAssetServeInfo (name, claimId) { const deferred = new Promise((resolve, reject) => { // if claim id is full 40 chars, retrieve the shortest possible url if (claimId.length === 40) { resolve(serveClaimByClaimId(name, claimId)); // if the claim id is shorter than 40, retrieve the full claim id & shortest possible url } else if (claimId.length < 40) { resolve(serveClaimByShortUrl(name, claimId)); } else { reject(new Error('That Claim Id is longer than 40 characters.')); } }); return deferred; } function retrieveAssetShowInfo (name, claimId) { const deferred = new Promise((resolve, reject) => { // if claim id is full 40 chars, retrieve the shortest possible url if (claimId.length === 40) { resolve(showClaimByClaimId(name, claimId)); // if the claim id is shorter than 40, retrieve the full claim id & shortest possible url } else if (claimId.length < 40) { resolve(showClaimByShortUrl(name, claimId)); } else { reject(new Error('That Claim Id is longer than 40 characters.')); } }); return deferred; } function serveClaimByNameWrapper (name, headers, originalUrl, ip, res) { // begin image-serve processes serveClaimByName(name) .then(fileInfo => { // check to make sure a file was found if (!fileInfo) { res.status(307).render('noClaims'); return; } // serve the file or the show route if (headers['accept']) { // note: added b/c some requests errored out due to no accept param in header const mimetypes = headers['accept'].split(','); if (mimetypes.includes('text/html')) { postToStats('show', originalUrl, ip, fileInfo.name, fileInfo.claimId, 'success'); res.status(200).render('showLite', { layout: 'show', fileInfo }); } else { postToStats('serve', originalUrl, ip, fileInfo.name, fileInfo.claimId, 'success'); serveFile(fileInfo, res); } } else { postToStats('serve', originalUrl, ip, fileInfo.name, fileInfo.claimId, 'success'); serveFile(fileInfo, res); } }) .catch(error => { errorHandlers.handleRequestError('serve', originalUrl, ip, error, res); }); } function serveAssetByClaimIdWrapper (name, claimId, headers, originalUrl, ip, res) { retrieveAssetServeInfo(name, claimId) .then((fileInfo) => { // check to make sure a file was found if (!fileInfo) { res.status(307).render('noClaims'); return; } // serve the file or the show route if (headers['accept']) { const mimetypes = headers['accept'].split(','); if (mimetypes.includes('text/html')) { postToStats('show', originalUrl, ip, fileInfo.name, fileInfo.claimId, 'success'); res.status(200).render('showLite', { layout: 'show', fileInfo }); } else { postToStats('serve', originalUrl, ip, fileInfo.name, fileInfo.claimId, 'success'); serveFile(fileInfo, res); } } else { postToStats('serve', originalUrl, ip, fileInfo.name, fileInfo.claimId, 'success'); serveFile(fileInfo, res); } }) .catch(error => { errorHandlers.handleRequestError('serve', originalUrl, ip, error, res); }); } module.exports = (app) => { // route to serve a specific asset app.get('/:name/:claim_id', ({ headers, ip, originalUrl, params }, res) => { // decide to serve or show const dotIndex = params.claim_id.lastIndexOf('.'); if (dotIndex === 0) { logger.error('a file extension with no name was submitted'); errorHandlers.handleRequestError('serve', originalUrl, ip, new Error('no claim id provided'), res); // if an image extension was given, serve the image directly } else if (dotIndex > 0) { // google analytics sendGoogleAnalytics('serve', headers, ip, originalUrl); // parse params const fileExtension = params.claim_id.substring(dotIndex); const claimId = params.claim_id.substring(0, dotIndex); logger.debug('file extension is:', fileExtension); // start image-serve processes serveAssetByClaimIdWrapper(params.name, claimId, headers, originalUrl, ip, res); // if no image extension was given, show the asset with details } else if (dotIndex === -1) { // google analytics sendGoogleAnalytics('show', headers, ip, originalUrl); // for backwards compatability: make sure the client can acept html, if not serve the file. if (headers['accept'] && headers['accept'].split(',').includes('text/html')) { // begin image-show processes retrieveAssetShowInfo(params.name, params.claim_id) .then((fileInfo) => { // check to make sure a file was found if (!fileInfo) { res.status(307).render('noClaims'); return; } // serve the file or the show route postToStats('show', originalUrl, ip, fileInfo.name, fileInfo.claimId, 'success'); res.status(200).render('show', { layout: 'show', fileInfo }); }) .catch(error => { errorHandlers.handleRequestError('show', originalUrl, ip, error, res); }); } else { // start image-serve processes serveAssetByClaimIdWrapper(params.name, params.claim_id, headers, originalUrl, ip, res); } } }); // route to serve the winning asset at a claim app.get('/:name', ({ headers, ip, originalUrl, params }, res) => { // decide to serve or show const dotIndex = params.name.lastIndexOf('.'); if (dotIndex === 0) { logger.error('a file extension with no name was submitted'); errorHandlers.handleRequestError('serve', originalUrl, ip, new Error('no name provided'), res); // if an image extension was given, serve the image directly } else if (dotIndex > 0) { // google analytics sendGoogleAnalytics('serve', headers, ip, originalUrl); // parse name param const fileExtension = params.name.substring(dotIndex); const claimName = params.name.substring(0, dotIndex); logger.debug('file extension is:', fileExtension); // start image-serve processes serveClaimByNameWrapper(claimName, headers, originalUrl, ip, res); // if no image extension was given, show the asset with details } else if (dotIndex === -1) { // google analytics sendGoogleAnalytics('show', headers, ip, originalUrl); // for backwards compatability: make sure the client can receive text/html, or else serve the asset directly if (headers['accept'] && headers['accept'].split(',').includes('text/html')) { // begin image-show process showClaimByName(params.name) .then(fileInfo => { // check to make sure a file was found if (!fileInfo) { res.status(307).render('noClaims'); return; } // serve the show route postToStats('show', originalUrl, ip, fileInfo.name, fileInfo.claimId, 'success'); res.status(200).render('show', { layout: 'show', fileInfo }); }) .catch(error => { errorHandlers.handleRequestError('show', originalUrl, ip, error, res); }); } else { // start image serve process serveClaimByNameWrapper(params.name, headers, originalUrl, ip, res); } } }); };