Created
August 12, 2020 19:43
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Tilt taxonomy class
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import _ from 'lodash' | |
class TagSet { | |
constructor({ name, slug, sortBy = 'title' }) { | |
/** @type {string} */ | |
this.name = name | |
/** @type {string} */ | |
this.slug = slug | |
/** @type {string} */ | |
this.sortBy = sortBy | |
/** @type {Page[]} */ | |
this.pages = [] | |
/** @type {Map.<string, TagSet>} */ | |
this.nested = new Map() | |
} | |
toJSON() { | |
return { | |
name: this.name, | |
slug: this.slug, | |
pages: _.sortBy(this.pages, this.sortBy), | |
} | |
} | |
} | |
export class Taxonomy { | |
constructor(files, hiddenField = 'hideInSiteMap') { | |
this.cataloguedPages = [] | |
/** @type {Map.<string, TagSet>} */ | |
this.tags = new Map() | |
/** @type {Map.<string, TagSet>} */ | |
this.categories = new Map() | |
/** @private */this._hiddenField = hiddenField | |
this._generateIndex(files) | |
} | |
get tagList() { | |
return _.sortBy(Array.from(this.tags.values()).map(tagset => tagset.toJSON()), 'pages.length').reverse() | |
} | |
get categoryList() { | |
return this._categoryMapToArray(this.categories) | |
} | |
/** | |
* @param {string} category Nested category names look like: "Books/Classic" | |
* @param {boolean} [includeNested] (Not used yet) | |
*/ | |
getPagesForCategory(category, includeNested = false) { | |
let parts = category.trim().split('/') | |
/** @type {TagSet} */ | |
let catMap | |
let cat = this.categories | |
while (parts.length > 0) { | |
const part = parts.shift() | |
catMap = cat.get(part) | |
cat = catMap.nested | |
} | |
return catMap.pages | |
} | |
/** | |
* @param {string} tagName Use tag.name as the key | |
*/ | |
getPagesForTagName(tagName) { | |
if (this.tags.has(tagName)) return this.tags.get(tagName).pages | |
else return [] | |
} | |
/** @private */ | |
_categoryMapToArray(catMap, sortField = 'title') { | |
if (!catMap) return null | |
return _.sortBy(Array.from(catMap.values()).map(tagset => ({ | |
name: tagset.name, | |
slug: tagset.slug, | |
pages: _.sortBy(tagset.pages, sortField), | |
nested: this._categoryMapToArray(tagset.nested) | |
})), 'name') | |
} | |
/** @private */ | |
_generateIndex(files) { | |
Object.keys(files).forEach(filename => { | |
const page = files[filename] | |
if (page[this._hiddenField] == true) return | |
const hasTags = ('tags' in page) | |
const hasCategories = ('categories' in page) | |
if (hasTags) { | |
page.tags.forEach(tag => { | |
if (!this.tags.has(tag.name)) { | |
this.tags.set(tag.name, new TagSet(tag)) | |
} | |
this.tags.get(tag.name).pages.push(page) | |
}) | |
} | |
if (hasCategories) { | |
page.categories.forEach(category => { | |
let catMap = this.categories | |
/** @type {TagSet} */ | |
let catSet = null | |
category.forEach(cat => { | |
if (!catMap.has(cat.name)) catMap.set(cat.name, new TagSet(cat)) | |
catSet = catMap.get(cat.name) | |
catMap = catSet.nested | |
}) | |
catSet.pages.push(page) | |
}) | |
} | |
if (hasTags || hasCategories) { | |
this.cataloguedPages.push(page) | |
} | |
}) | |
} | |
} |
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