uno.config.ts

import type { WebFontMeta } from '@unocss/preset-web-fonts'
import type { Preset } from 'unocss'

import { setDefaultAutoSelectFamilyAttemptTimeout } from 'node:net'

import { presetChromatic } from '@proj-airi/unocss-preset-chromatic'
import { defineConfig, mergeConfigs, presetIcons, presetTypography, presetWind3, transformerDirectives, transformerVariantGroup } from 'unocss'
import { presetScrollbar } from 'unocss-preset-scrollbar'

// On Netlify, building will result in when fetching metadata and fonts from @unocss/preset-web-fonts plugin:
//
// [cause]: AggregateError [ETIMEDOUT]:
//    at internalConnectMultiple (node:net:1134:18)
//  code: 'ETIMEDOUT',
//  [errors]: [
//    Error: connect ETIMEDOUT 146.75.77.229:443 ...
//    Error: connect ENETUNREACH 2a04:4e42:83::485:443 - Local (:::0) ...
//  ]
//
// This is same for either Google Fonts or Fontsource as provider. But GitHub Actions and local development works fine.
// My assumption is that the default timeout for auto-selecting family is too short (250ms)[^1] for the implementation
// of the Happy Eyeballs algorithm in Node.js, which is used by the `net` module to connect to the server, workflows
// illustrates like this:
//
// lookupAndConnect > autoSelectFamilyAttemptTimeout > lookupAndConnectMultiple > internalConnectMultiple > defaultTriggerAsyncIdScope
//
// Such mechanism will be used when the `net` module attempts to connect to a server using both IPv4 and IPv6 addresses,
// which is the case for Netlify builder.
//
// In order to fix this issue, we can increase the timeout to 1000ms (1 second) so that the algorithm has more time to
// attempt to connect to the server before timing out.
//
// [^1]: https://github.com/nodejs/node/pull/44731/files#diff-d76469e9e7f555294a7a5488c5c8fc4ef8ce5aea448cc26a1322d1ab693e09caR921
setDefaultAutoSelectFamilyAttemptTimeout(1000)

export function safelistAllPrimaryBackgrounds(): string[] {
  return [undefined, 50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 950].map((shade) => {
    const prefix = shade ? `bg-primary-${shade}` : `bg-primary`
    return [
      prefix,
      ...[5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100].map(opacity => `${prefix}/${opacity}`),
    ]
  }).flat()
}

export function presetWebFontsFonts(provider: 'fontsource' | 'none'): Record<string, string | WebFontMeta | (string | WebFontMeta)[]> {
  return {
    'sans': {
      name: provider === 'fontsource' ? 'DM Sans' : 'DM Sans Variable',
      provider,
    },
    'serif': {
      name: 'DM Serif Display',
      provider,
    },
    'mono': {
      name: 'DM Mono',
      provider,
    },
    'cutejp': {
      name: 'Kiwi Maru',
      provider,
      subsets: ['latin', 'japanese'],
    },
    'cuteen': {
      name: 'Sniglet',
      provider,
    },
    'jura': {
      name: provider === 'fontsource' ? 'Jura' : 'Jura Variable',
      provider,
    },
    'gugi': {
      name: 'Gugi',
      provider,
    },
    'quicksand': {
      name: provider === 'fontsource' ? 'Quicksand' : 'Quicksand Variable',
      provider,
    },
    'urbanist': {
      name: provider === 'fontsource' ? 'Urbanist' : 'Urbanist Variable',
      provider,
    },
    'comfortaa': {
      name: provider === 'fontsource' ? 'Comfortaa' : 'Comfortaa Variable',
      provider,
      subsets: ['cyrillic'],
    },
    'm-plus-rounded': {
      name: 'M PLUS Rounded 1c',
      provider,
    },
    'quanlai': {
      name: 'cjkfonts AllSeto',
      provider: 'none',
    },
    'xiaolai': {
      name: 'Xiaolai SC',
      provider: 'none',
    },
  }
}

export function sharedUnoConfig() {
  return defineConfig({
    presets: [
      presetWind3({
        dark: 'class',
      }),
      presetTypography(),
      presetIcons({ scale: 1.2 }),
      presetScrollbar(),
      presetChromatic({
        baseHue: 220.44,
        colors: {
          primary: 0,
          complementary: 180,
        },
      }) as Preset,
    ],
    transformers: [
      transformerDirectives({
        applyVariable: ['--at-apply'],
      }),
      transformerVariantGroup(),
    ],
    safelist: [
      ...'prose prose-sm m-auto text-left'.split(' '),
      ...safelistAllPrimaryBackgrounds(),
    ],
    // hyoban/unocss-preset-shadcn: Use shadcn ui with UnoCSS
    // https://github.com/hyoban/unocss-preset-shadcn
    //
    // Thanks to
    // https://github.com/unovue/shadcn-vue/issues/34#issuecomment-2467318118
    // https://github.com/hyoban-template/shadcn-vue-unocss-starter
    //
    // By default, `.ts` and `.js` files are NOT extracted.
    // If you want to extract them, use the following configuration.
    // It's necessary to add the following configuration if you use shadcn-vue or shadcn-svelte.
    content: {
      pipeline: {
        include: [
          // the default
          /\.(vue|svelte|[jt]sx|mdx?|astro|elm|php|phtml|html)($|\?)/,
          // include js/ts files
          '(components|src)/**/*.{js,ts,tsx}', // THIS CAN INCLUDE node_modules
          '**/stage-ui/**/*.{tsx,js,ts}', // THIS TOO
          '**/ui/**/*.{tsx,js,ts}', // THIS TOO
        ],
        exclude: [
          /\/node_modules\//, // DO NOT SCAN THE BLACK HOLE
        ],
      },
    },
    theme: {
      /**
       * https://github.com/unocss/unocss/blob/1031312057a3bea1082b7d938eb2ad640f57613a/packages-presets/preset-wind4/src/theme/animate.ts
       * https://unocss.dev/presets/wind4#transformdirectives
       */
      animation: {
        keyframes: {
          overlayShow: '{from{opacity:0;}to{opacity:1;}}',
          overlayHide: '{from{opacity:1;}to{opacity:0;}}',
          contentShow: '{from:{opacity:0;transform:translate(-50%,-48%) scale(0.96);}to:{opacity:1;transform:translate(-50%,-50%) scale(1);}}',
          contentHide: '{from:{opacity:1;transform:translate(-50%,-50%) scale(1);}to:{opacity:0;transform:translate(-50%,-48%) scale(0.96);}}',
          slideUpAndFade: '{from{opacity:0;transform:translateY(2px)}to{opacity:1;transform:translateY(0)}}',
          slideRightAndFade: '{from{opacity:0;transform:translateX(-2px)}to{opacity:1;transform:translateX(0)}}',
          slideDownAndFade: '{from{opacity:0;transform:translateY(-2px)}to{opacity:1;transform:translateY(0)}}',
          slideLeftAndFade: '{from{opacity:0;transform:translateX(2px)}to{opacity:1;transform:translateX(0)}}',
          fadeIn: '{from{opacity:0;}to{opacity:1;}}',
          fadeOut: '{from{opacity:1;}to{opacity:0;}}',
        },
        durations: {
          overlayShow: '300ms',
          overlayHide: '300ms',
          contentShow: '150ms',
          contentHide: '150ms',
          slideUpAndFade: '400ms',
          slideRightAndFade: '400ms',
          slideDownAndFade: '400ms',
          slideLeftAndFade: '400ms',
          fadeIn: '200ms',
          fadeOut: '200ms',
        },
        timingFns: {
          overlayShow: 'cubic-bezier(0.16, 1, 0.3, 1)',
          overlayHide: 'cubic-bezier(0.16, 1, 0.3, 1)',
          contentShow: 'cubic-bezier(0.16, 1, 0.3, 1)',
          contentHide: 'cubic-bezier(0.16, 1, 0.3, 1)',
          slideUpAndFade: 'cubic-bezier(0.16, 1, 0.3, 1)',
          slideRightAndFade: 'cubic-bezier(0.16, 1, 0.3, 1)',
          slideDownAndFade: 'cubic-bezier(0.16, 1, 0.3, 1)',
          slideLeftAndFade: 'cubic-bezier(0.16, 1, 0.3, 1)',
          fadeIn: 'ease-in-out',
          fadeOut: 'ease-in-out',
        },
      },
    },
  })
}

export default mergeConfigs([
  sharedUnoConfig(),
])