eleventy.config.js

const { DateTime } = require("luxon");
const markdownItAnchor = require("markdown-it-anchor");
const htmlmin = require("html-minifier");
const pluginPWA = require("eleventy-plugin-pwa-v2");

const pluginRss = require("@11ty/eleventy-plugin-rss");
const pluginSyntaxHighlight = require("@11ty/eleventy-plugin-syntaxhighlight");
const pluginBundle = require("@11ty/eleventy-plugin-bundle");
const pluginNavigation = require("@11ty/eleventy-navigation");
const { EleventyHtmlBasePlugin } = require("@11ty/eleventy");

const pluginDrafts = require("./eleventy.config.drafts.js");
const pluginImages = require("./eleventy.config.images.js");

module.exports = function (eleventyConfig) {
	// Copy the contents of the `public` folder to the output folder
	// For example, `./public/css/` ends up in `_site/css/`
	eleventyConfig.addPassthroughCopy({
		"./public/": "/",
		"./node_modules/prismjs/themes/prism-okaidia.css": "/css/prism-okaidia.css"
	});

	// Run Eleventy when these files change:
	// https://www.11ty.dev/docs/watch-serve/#add-your-own-watch-targets

	// Watch content images for the image pipeline.
	eleventyConfig.addWatchTarget("content/**/*.{svg,webp,png,jpeg}");

	// App plugins
	eleventyConfig.addPlugin(pluginDrafts);
	eleventyConfig.addPlugin(pluginImages);

	// Official plugins
	eleventyConfig.addPlugin(pluginRss);
	eleventyConfig.addPlugin(pluginSyntaxHighlight, {
		preAttributes: { tabindex: 0 }
	});
	eleventyConfig.addPlugin(pluginNavigation);
	eleventyConfig.addPlugin(EleventyHtmlBasePlugin);
	eleventyConfig.addPlugin(pluginBundle);

	// Filters
	eleventyConfig.addFilter("readableDate", (dateObj, format, zone) => {
		// Formatting tokens for Luxon: https://moment.github.io/luxon/#/formatting?id=table-of-tokens
		return DateTime.fromJSDate(dateObj, { zone: zone || "utc" }).toFormat(format || "dd LLLL yyyy");
	});

	eleventyConfig.addFilter('htmlDateString', (dateObj) => {
		// dateObj input: https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
		return DateTime.fromJSDate(dateObj, { zone: 'utc' }).toFormat('yyyy-LL-dd');
	});

	// Get the first `n` elements of a collection.
	eleventyConfig.addFilter("head", (array, n) => {
		if (!Array.isArray(array) || array.length === 0) {
			return [];
		}
		if (n < 0) {
			return array.slice(n);
		}

		return array.slice(0, n);
	});

	// Return the smallest number argument
	eleventyConfig.addFilter("min", (...numbers) => {
		return Math.min.apply(null, numbers);
	});

	// Return all the tags used in a collection
	eleventyConfig.addFilter("getAllTags", collection => {
		let tagSet = new Set();
		for (let item of collection) {
			(item.data.tags || []).forEach(tag => tagSet.add(tag));
		}
		return Array.from(tagSet);
	});

	eleventyConfig.addFilter("filterTagList", function filterTagList(tags) {
		return (tags || []).filter(tag => ["all", "nav", "post", "posts"].indexOf(tag) === -1);
	});
	// Customize Markdown library settings:
	eleventyConfig.amendLibrary("md", mdLib => {
		mdLib.use(markdownItAnchor, {
			permalink: markdownItAnchor.permalink.ariaHidden({
				placement: "after",
				class: "header-anchor",
				symbol: "#",
				ariaHidden: false,
			}),
			level: [1, 2, 3, 4],
			slugify: eleventyConfig.getFilter("slugify")
		});
	});
	//url编码（不需要编码，url本身就支持中文泰文日文）
	eleventyConfig.addFilter("encode", function filterTagList(url) {
		// return encodeURIComponent(url);
		return url;
	});
	//分类列表
	eleventyConfig.addCollection("categoriesList", function (collectionApi) {
		let categorySet = new Set();
		collectionApi.getAll().forEach(function (item) {
			if ("categories" in item.data) {
				let categories = item.data.categories;
				if (typeof categories === "string") {
					categories = [categories];
				}
				categories.forEach(function (category) {
					categorySet.add(category);
				});
			}
		});
		// 返回排序后的类别数组
		return [...categorySet].sort();
	});
	//分类详细数据
	eleventyConfig.addCollection("categories", function (collectionApi) {
		let data = collectionApi.getAll().reduce(function (acc, item) {
			if (item.data.categories) {
				if (typeof item.data.categories === "string") {
					item.data.categories = [item.data.categories];
				}
				item.data.categories.forEach(function (category) {
					if (!acc[category]) {
						acc[category] = [];
					}
					acc[category].push(item);
				});
			}
			return acc;
		}, {});
		return data
	});
	//
	eleventyConfig.addFilter("filterCategories", function filterTagList(tags) {
		if (typeof tags === "string") {
			tags = [tags];
		}
		return tags
	});
	//压缩html-去除空白
	eleventyConfig.addTransform("htmlmin", function (content) {
		// Prior to Eleventy 2.0: use this.outputPath instead
		if (this.page.outputPath && this.page.outputPath.endsWith(".html")) {
			let minified = htmlmin.minify(content, {
				useShortDoctype: true,
				removeComments: true,
				collapseWhitespace: true,
				minifyCSS: true,
				minifyJS: true
			});
			return minified;
		}

		return content;
	});
	//PWA
	eleventyConfig.addPassthroughCopy('public/js');
	eleventyConfig.addPlugin(pluginPWA, {
		cacheId: "xiyupro", // change this to your application id
		globIgnores: [
			// any files you don't want service worker to cache go here
			//   "share-*.jpg",
		],
		runtimeCaching: [
			{
				// we always want fresh copy of the index page
				urlPattern: /\/$/,
				handler: "NetworkFirst",
			},
			{
				// we also want fresh copies of any HTML page
				urlPattern: /\.html$/,
				handler: "NetworkFirst",
			},
			{
				// we serve stale copies of static assets while they're refreshed
				urlPattern:
					/^.*\.(jpg|png|mp4|gif|webp|ico|svg|woff2|woff|eot|ttf|otf|ttc|json)$/,
				handler: "StaleWhileRevalidate",
			},
		],
	});
	// Features to make your build faster (when you need them)

	// If your passthrough copy gets heavy and cumbersome, add this line
	// to emulate the file copy on the dev server. Learn more:
	// https://www.11ty.dev/docs/copy/#emulate-passthrough-copy-during-serve

	// eleventyConfig.setServerPassthroughCopyBehavior("passthrough");

	return {
		// Control which files Eleventy will process
		// e.g.: *.md, *.njk, *.html, *.liquid
		templateFormats: [
			"md",
			"njk",
			"html",
			"liquid",
		],

		// Pre-process *.md files with: (default: `liquid`)
		markdownTemplateEngine: "njk",

		// Pre-process *.html files with: (default: `liquid`)
		htmlTemplateEngine: "njk",

		// These are all optional:
		dir: {
			input: "content",          // default: "."
			includes: "../_includes",  // default: "_includes"
			data: "../_data",          // default: "_data"
			output: "_site"
		},

		// -----------------------------------------------------------------
		// Optional items:
		// -----------------------------------------------------------------

		// If your site deploys to a subdirectory, change `pathPrefix`.
		// Read more: https://www.11ty.dev/docs/config/#deploy-to-a-subdirectory-with-a-path-prefix

		// When paired with the HTML <base> plugin https://www.11ty.dev/docs/plugins/html-base/
		// it will transform any absolute URLs in your HTML to include this
		// folder name and does **not** affect where things go in the output folder.
		pathPrefix: "/",
	};
};