const Nunjucks = require('nunjucks');
const nunjucksDate = require('nunjucks-date');
const syntaxHighlight = require('@11ty/eleventy-plugin-syntaxhighlight');
const markdownIt = require('markdown-it');
const markdownItClass = require('@toycode/markdown-it-class');

const markdownClassMapping = {
  h1: ['text-6xl', 'mt-6', 'text-pink'],
  h2: ['text-3xl', 'mt-6', 'text-text'],
  h3: ['text-2xl', 'mt-4', 'text-text'],
  h4: ['text-xl', 'mt-2', 'text-text'],
  h5: ['text-lg', 'mt-2', 'text-text'],
  h6: ['font-bold', 'mt-2', 'text-text'],
  blockquote: ['border-l-2', 'border-lavender', 'px-4', 'pt-4', 'pb-px', 'my-8', 'bg-base'],
  a: [
    'text-blue', 'underline',
    'visited:text-lavender',
    'hover:no-underline', 'hover:text-sky', 'hover:outline', 'hover:outline-width-1', 'hover:outline-sky',
    'active:no-underline', 'active:text-sky', 'active:outline', 'active:outline-width-1', 'active:outline-sky',
    'focus:no-underline', 'focus:text-sky', 'focus:outline', 'focus:outline-width-1', 'focus:outline-sky'
  ],
  s: ['text-red'],
  p: ['mb-4', 'text-text', 'leading-7'],
  img: ['max-w-full', 'rounded-lg', 'max-h-600px'],
  ul: ['list-disc', 'ml-4'],
};

module.exports = function(eleventyConfig) {
  let nunjucksEnvironment = new Nunjucks.Environment(
    new Nunjucks.FileSystemLoader("_includes")
  );
  nunjucksDate.setDefaultFormat('MMMM Do, YYYY');
  nunjucksDate.install(nunjucksEnvironment);

  eleventyConfig.addPlugin(syntaxHighlight);

  const md = markdownIt({ linkify: true, html: true });
  md.use(markdownItClass, markdownClassMapping);
  eleventyConfig.setLibrary('md', md);

  eleventyConfig.addPassthroughCopy('img');
  eleventyConfig.addPassthroughCopy('files');

  eleventyConfig.addCollection(
    "pinned",
    collection => collection.getAllSorted().filter(item => item.data.pinned),
  );

  eleventyConfig.setLibrary('njk', nunjucksEnvironment);
};