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getTags.js
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getTags.js
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const slugify = require('../_utils/slugify');
const fs = require('fs');
const hashtagsToTags = require('../_utils/hashtags').hashtagsToTags;
module.exports = function (collection) {
let tagsCollection = new Map();
collection.getAll().forEach(function (item) {
if ('tags' in item.data) {
let itemTags = item.data.tags;
// TODO: deal with hashtags only once
if (item.data.layout === 'note') {
itemTags = [
...new Set(
[].concat(
...itemTags,
...hashtagsToTags(item.template.frontMatter.content)
)
),
];
}
for (const tag of itemTags) {
let number = (tagsCollection.get(tag) || 0) + 1;
tagsCollection.set(tag, number);
}
}
});
const tags = [];
tagsCollection.forEach((number, tag) => {
let tagLog = Math.log(number);
let tagSlug = slugify(tag);
let newTag = {
tag: tag,
slug: tagSlug,
number: number,
log: tagLog,
};
let tagLogoPath = `assets/logos/${tagSlug}.png`;
if (fs.existsSync(`src/${tagLogoPath}`)) {
newTag.logo = tagLogoPath;
}
let tagContentPath = `src/_includes/tags/${tagSlug}.md`;
if (fs.existsSync(tagContentPath)) {
newTag.description = fs.readFileSync(tagContentPath, {
encoding: 'utf8',
});
}
tags.push(newTag);
});
tags.sort((a, b) => {
return a.tag.localeCompare(b.tag, 'en', { ignorePunctuation: true });
});
return tags;
};