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collections.js
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collections.js
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/**
* Copyright 2019 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const objectGet = require('lodash.get');
const { propSort } = require('./sort');
const site = require('../../pages/_data/site');
/**
*
* @param {string} filter - Object path to search against to filter
* @param {string|number|boolean} target - Value filter should equal
* @return {function}
*/
function filteredCollection(filter, target) {
return function weightSortedLocaleCollection(lang) {
return collection =>
collection
.getAll()
.filter(item => objectGet(item, filter) === target)
.filter(item => item.data.locale.code === lang)
// Sort Alphabetically
.sort(propSort({ prop: 'data.title', lowercase: true }))
// Sort by Weight
.sort(propSort({ prop: 'data.weight', fallback: 0 }));
};
}
/**
*
* @param {string} filter - Object path to search against to filter
* @param {Object} target - Value filter should equal
* @return {function}
*/
function filteredFeaturedCollection(filter, target) {
return function featuredLocaleCollection(lang) {
return collection =>
collection
.getAll()
.filter(item => objectGet(item, filter) === target)
.filter(item => objectGet(item, 'data.featured', false))
.filter(item => item.data.locale.code === lang);
};
}
/**
*
* @param {string} name - Name of the overarching collection
* @param {string[]} sections - Array of string corresponding to `section` metadata to search against
* @param {object} eleventy - Eleventy object
*/
function addSectionCollections(name, sections, eleventy) {
const fnSections = sections.map(item => filteredCollection('data.section', item));
const fnFeatSections = sections.map(item => filteredFeaturedCollection('data.section', item));
const all = lang => {
return function localAllCollection(collection) {
const collections = fnSections.map(f => f(lang)(collection));
return [].concat(collections);
};
};
for (const lang of site().languages) {
for (const [i, section] of sections.entries()) {
eleventy.addCollection(`${section}--${lang}`, fnSections[i](lang));
eleventy.addCollection(`${section}__featured--${lang}`, fnFeatSections[i](lang));
}
eleventy.addCollection(`${name}--${lang}`, all(lang));
}
}
module.exports = {
filteredCollection,
addSectionCollections,
};