helpers.js
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'use strict';
const _ = require('lodash');
let cdnDomains = require('../config/dns-prefetch');
function cdnReplace(cdn, imgUrl) {
if (cdn === 'qcloud') {
Object.keys(cdnDomains).forEach(key => {
if (imgUrl.indexOf(key) >= 0) {
imgUrl = imgUrl.replace(key, cdnDomains[key]);
}
});
}
return imgUrl;
}
module.exports = {
image2: function(imageUrl, opts) {
let cdn = _.get(opts, 'data.root.cdn');
if (imageUrl && _.isString(imageUrl)) {
let params = opts.hash || {};
let urls = imageUrl.split('?');
let query = urls[1] || '';
let uri = urls[0];
if (uri.indexOf('http:') === 0) {
uri = uri.replace('http:', '');
}
uri = cdnReplace(cdn, uri);
if (query) {
query = query.replace(/{width}/g, params.w).replace(/{height}/g,
params.h).replace(/{mode}/g, (params.mode || 2));
if (query.indexOf('imageView2') === 0) {
if (params.q && query.indexOf('/q/') > 0) {
query = query.replace(/\/q\/\d+/g, '/q/' + params.q);
} else if (params.q) {
query += '/q/' + params.q;
}
} else if (query.indexOf('imageMogr2') === 0) {
if (params.q && query.indexOf('/quality/') > 0) {
query = query.replace(/\/quality\/\d+/g, '/quality/' + params.q);
} else if (params.q) {
query += '/quality/' + params.q;
}
} else if (query.indexOf('imageView/') === 0) {
if (params.q && query.indexOf('/q/') > 0) {
query = query.replace(/\/q\/\d+/g, '/q/' + params.q);
} else if (params.q) {
query += '/q/' + params.q;
}
if (params.mode) {
query = query.replace(/imageView\/\d{1}\//, 'imageView/' + params.mode + '/');
}
}
} else {
query = 'imageView2/2/interlace/1/q/' + (params.q || 75);
}
return uri + '?' + query + '|imageslim';
} else {
return '';
}
}
};