.eleventy.js

const fs = require('fs')
const pluginRss = require('@11ty/eleventy-plugin-rss')
const pluginNavigation = require('@11ty/eleventy-navigation')
const syntaxHighlight = require('@11ty/eleventy-plugin-syntaxhighlight')
const markdownIt = require('markdown-it')
const markdownItEmoji = require('markdown-it-emoji')

// const collections = require('./utils/collections.js')
const filters = require('./utils/filters.js')
const shortcodes = require('./utils/shortcodes.js')
const pairedshortcodes = require('./utils/paired-shortcodes.js')
const transforms = require('./utils/transforms.js')
const svgsprite = require('./utils/svgsprite')

module.exports = function (eleventyConfig) {
	/**
	 * Plugins
	 * @link https://www.11ty.dev/docs/plugins/
	 */

	eleventyConfig.addPlugin(pluginRss)
	eleventyConfig.addPlugin(pluginNavigation)
	eleventyConfig.addPlugin(syntaxHighlight)

	/**
	 * Filters
	 * @link https://www.11ty.io/docs/filters/
	 */
	Object.keys(filters).forEach((filterName) => {
		eleventyConfig.addFilter(filterName, filters[filterName])
	})

	/**
	 * Transforms
	 * @link https://www.11ty.io/docs/config/#transforms
	 */
	Object.keys(transforms).forEach((transformName) => {
		eleventyConfig.addTransform(transformName, transforms[transformName])
	})

	/**
	 * Shortcodes
	 * @link https://www.11ty.io/docs/shortcodes/
	 */
	Object.keys(shortcodes).forEach((shortcodeName) => {
		eleventyConfig.addShortcode(shortcodeName, shortcodes[shortcodeName])
	})

	/**
	 * Paired Shortcodes
	 * @link https://www.11ty.dev/docs/languages/nunjucks/#paired-shortcode
	 */
	Object.keys(pairedshortcodes).forEach((shortcodeName) => {
		eleventyConfig.addPairedShortcode(
			shortcodeName,
			pairedshortcodes[shortcodeName]
		)
	})

	/**
	 * Add async shortcodes
	 *
	 * @link https://www.11ty.dev/docs/languages/nunjucks/#asynchronous-shortcodes
	 */
	eleventyConfig.addNunjucksAsyncShortcode('svgsprite', svgsprite)

	/**
	 * Collections
	 * ============================
	 *
	 * POST Collection set so we can check status of "draft:" frontmatter.
	 * If set "true" then post will NOT be processed in PRODUCTION env.
	 * If "false" or NULL it will be published in PRODUCTION.
	 * Every Post will ALWAYS be published in DEVELOPMENT so you can preview locally.
	 */
	eleventyConfig.addCollection('post', (collection) => {
		if (process.env.ELEVENTY_ENV !== 'production')
			return [...collection.getFilteredByGlob('./src/posts/*.md')]
		else
			return [...collection.getFilteredByGlob('./src/posts/*.md')].filter((post) => !post.data.draft)
	})

	// TAGLIST used from the official eleventy-base-blog  https://github.com/11ty/eleventy-base-blog/blob/master/.eleventy.js
	eleventyConfig.addCollection('tagList', function (collection) {
		let tagSet = new Set()
		collection.getAll().forEach(function (item) {
			if ('tags' in item.data) {
				let tags = item.data.tags

				tags = tags.filter(function (item) {
					switch (item) {
						// this list should match the `filter` list in tags.njk
						case 'authors':
						case 'pages':
						case 'post':
							return false
					}

					return true
				})

				for (const tag of tags) {
					tagSet.add(tag)
				}
			}
		})

		// returning an array in addCollection works in Eleventy 0.5.3
		return [...tagSet]
	})

	/**
	 * Custom Watch Targets
	 * for when the Tailwind config or .css files change...
	 * by default not watched by 11ty
	 * @link https://www.11ty.dev/docs/config/#add-your-own-watch-targets
	 */
	eleventyConfig.addWatchTarget('./src/assets')
	eleventyConfig.addWatchTarget('./utils/*.js')
	eleventyConfig.addWatchTarget('./tailwind.config.js')

	/**
	 * Passthrough File Copy
	 * @link https://www.11ty.dev/docs/copy/
	 */
	eleventyConfig.addPassthroughCopy('src/*.png')
	eleventyConfig.addPassthroughCopy('src/*.jpg')
	eleventyConfig.addPassthroughCopy('src/*.ico')
	eleventyConfig.addPassthroughCopy('src/robots.txt')
	eleventyConfig.addPassthroughCopy('src/ads.txt')
	eleventyConfig.addPassthroughCopy('src/assets/images/')
	eleventyConfig.addPassthroughCopy('src/assets/svg/')
	eleventyConfig.addPassthroughCopy('src/assets/video/')
	eleventyConfig.addPassthroughCopy({ "src/wp/": "/" })

	/**
	 * Set custom markdown library instance...
	 * and support for Emojis in markdown...
	 * ...because why not control our .MD files and have Emojis built in?
	 * @link https://www.11ty.dev/docs/languages/markdown/#optional-set-your-own-library-instance
	 * @link https://www.npmjs.com/package/markdown-it-emoji
	 *
	 */
	let options = {
		html: true,
		breaks: true,
		linkify: true,
		typographer: true,
	}
	let markdownLib = markdownIt(options).use(markdownItEmoji)
	eleventyConfig.setLibrary('md', markdownLib)

	/**
	 * Add layout aliases
	 * @link https://www.11ty.dev/docs/layouts/#layout-aliasing
	 */
	eleventyConfig.addLayoutAlias('base', 'layouts/base.njk')
	eleventyConfig.addLayoutAlias('page', 'layouts/page.njk')
	eleventyConfig.addLayoutAlias('post', 'layouts/post.njk')
	eleventyConfig.addLayoutAlias('author', 'layouts/author.njk')

	/**
	 * Opts in to a full deep merge when combining the Data Cascade.
	 * Per the link below, "This will likely become the default in an upcoming major version."
	 * So I'm going to implement it now.
	 * @link https://www.11ty.dev/docs/data-deep-merge/#data-deep-merge
	 */
	eleventyConfig.setDataDeepMerge(true)

	/**
	 * Override BrowserSync Server options
	 * This so we can have and test a 404 during local dev.
	 * @link https://www.11ty.dev/docs/config/#override-browsersync-server-options
	 */
	// eleventyConfig.setBrowserSyncConfig({
	// 	notify: true,
	// 	snippetOptions: {
	// 		rule: {
	// 			match: /<\/head>/i,
	// 			fn: function (snippet, match) {
	// 				return snippet + match
	// 			},
	// 		},
	// 	},
		// Set local server 404 fallback
		// callbacks: {
		// 	ready: function (err, browserSync) {
		// 		const content_404 = fs.readFileSync('dist/404.html')

		// 		browserSync.addMiddleware('*', (req, res) => {
		// 			// Provides the 404 content without redirect.
		// 			res.write(content_404)
		// 			res.end()
		// 		})
		// 	},
		// },
	// })

	return {
		dir: {
			input: 'src',
			output: 'dist',
			includes: '_includes',
			data: '_data',
		},
		passthroughFileCopy: true,
		templateFormats: ['html', 'njk', 'md'],
		htmlTemplateEngine: 'njk',
		markdownTemplateEngine: 'njk',
	}
}