110 lines
2.2 KiB
JavaScript
110 lines
2.2 KiB
JavaScript
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"use strict";
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var Promise = require('bluebird'),
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path = require('path'),
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fs = Promise.promisifyAll(require("fs")),
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_ = require('lodash'),
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farmhash = require('farmhash'),
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msgpack = require('msgpack5')();
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/**
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* Entries Model
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*/
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module.exports = {
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_repoPath: 'repo',
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_cachePath: 'data/cache',
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/**
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* Initialize Entries model
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*
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* @param {Object} appconfig The application config
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* @return {Object} Entries model instance
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*/
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init(appconfig) {
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let self = this;
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self._repoPath = appconfig.datadir.repo;
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self._cachePath = path.join(appconfig.datadir.db, 'cache');
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return self;
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},
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fetch(entryPath) {
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let self = this;
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let fpath = path.join(self._repoPath, entryPath + '.md');
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let cpath = path.join(self._cachePath, farmhash.fingerprint32(entryPath) + '.bin');
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return fs.statAsync(cpath).then((st) => {
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return st.isFile();
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}).catch((err) => {
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return false;
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}).then((isCache) => {
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if(isCache) {
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console.log('from cache!');
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return fs.readFileAsync(cpath, 'utf8').then((contents) => {
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return msgpack.decode(contents);
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}).catch((err) => {
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winston.error('Corrupted cache file. Deleting it...');
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fs.unlinkSync(cpath);
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return false;
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});
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} else {
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console.log('original!');
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// Parse original and cache it
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return fs.statAsync(fpath).then((st) => {
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if(st.isFile()) {
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return fs.readFileAsync(fpath, 'utf8').then((contents) => {
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let pageData = mark.parse(contents);
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if(!pageData.meta.title) {
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pageData.meta.title = entryPath;
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}
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let cacheData = msgpack.encode(pageData);
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return fs.writeFileAsync(cpath, cacheData, { encoding: 'utf8' }).then(() => {
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return pageData;
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}).catch((err) => {
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winston.error('Unable to write to cache! Performance may be affected.');
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return pageData;
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});
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});
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} else {
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return false;
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}
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});
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}
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});
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},
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parsePath(urlPath) {
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let wlist = new RegExp('[^a-z0-9/\-]','g');
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urlPath = _.toLower(urlPath).replace(wlist, '');
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if(urlPath === '/') {
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urlPath = 'home';
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}
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let urlParts = _.filter(_.split(urlPath, '/'), (p) => { return !_.isEmpty(p); });
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return _.join(urlParts, '/');
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}
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};
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