import sitemap from '@astrojs/sitemap';
import { defineConfig } from 'astro/config';
import rehypeAutolinkHeadings from 'rehype-autolink-headings';
import rehypeSlug from 'rehype-slug';

export default defineConfig({
  site: 'https://schmelczer.dev',
  trailingSlash: 'always',
  redirects: {
    '/writing/': '/articles/',
    '/writing/[slug]': '/articles/[slug]',
  },
  integrations: [
    sitemap({
      filter: (page) => {
        const path = new URL(page).pathname;
        return !path.startsWith('/writing/') && path !== '/404/';
      },
      serialize(item) {
        return { ...item, changefreq: 'monthly' };
      },
    }),
  ],
  image: {
    service: { entrypoint: 'astro/assets/services/sharp' },
  },
  markdown: {
    shikiConfig: {
      themes: {
        light: 'github-light',
        dark: 'github-dark',
      },
      defaultColor: false,
      wrap: false,
    },
    rehypePlugins: [
      rehypeSlug,
      [
        rehypeAutolinkHeadings,
        {
          behavior: 'append',
          properties: {
            className: ['heading-anchor'],
            'aria-hidden': 'true',
            tabIndex: -1,
          },
          content: { type: 'text', value: '#' },
        },
      ],
    ],
  },
});