const fs = require('fs')
const path = require('path')
const plugin = require('tailwindcss/plugin')

exports.lucideComponent = plugin(({ matchComponents, theme }) => {
  let iconsDir = path.join(__dirname, '../deps/lucide/icons')

  const values = fs.readdirSync(iconsDir).reduce((iconsAcc, file) => {
    if (file.endsWith('.svg')) {
      const name = path.basename(file, '.svg')
      iconsAcc[name] = { name, fullPath: path.join(iconsDir, file) }
      return iconsAcc
    } else {
      return iconsAcc
    }
  }, {})

  matchComponents(
    {
      lucide: ({ name, fullPath }) => {
        const content = fs
          .readFileSync(fullPath)
          .toString()
          .replace(/\r?\n|\r/g, '')
          // Remove width and height attributes we only need viewBox
          .replace('width="24"', '')
          .replace('height="24"', '')

        let size = theme('spacing.6')
        if (name.endsWith('-mini')) {
          size = theme('spacing.5')
        } else if (name.endsWith('-micro')) {
          size = theme('spacing.4')
        }
        return {
          [`--lucide-${name}`]: `url('data:image/svg+xml;utf8,${content}')`,
          '-webkit-mask': `var(--lucide-${name})`,
          mask: `var(--lucide-${name})`,
          'background-color': 'currentColor',
          'vertical-align': 'middle',
          display: 'inline-block',
          width: size,
          height: size,
        }
      },
    },
    { values },
  )
})

// Embeds Hero Icons (https://heroicons.com) into your app.css bundle
// See your `CoreComponents.icon/1` for more information.
exports.heroComponent = plugin(({ matchComponents, theme }) => {
  let iconsDir = path.join(__dirname, '../deps/heroicons/optimized')
  const icons = [
    ['', '/24/outline'],
    ['-solid', '/24/solid'],
    ['-mini', '/20/solid'],
    ['-micro', '/16/solid'],
  ]
  const values = icons.reduce(
    (acc, [suffix, dir]) =>
      fs.readdirSync(path.join(iconsDir, dir)).reduce((iconsAcc, file) => {
        const name = path.basename(file, '.svg') + suffix
        iconsAcc[name] = { name, fullPath: path.join(iconsDir, dir, file) }
        return iconsAcc
      }, acc),
    {},
  )

  matchComponents(
    {
      hero: ({ name, fullPath }) => {
        const content = fs
          .readFileSync(fullPath)
          .toString()
          .replace(/\r?\n|\r/g, '')
        let size = theme('spacing.6')
        if (name.endsWith('-mini')) {
          size = theme('spacing.5')
        } else if (name.endsWith('-micro')) {
          size = theme('spacing.4')
        }
        return {
          [`--hero-${name}`]: `url('data:image/svg+xml;utf8,${content}')`,
          '-webkit-mask': `var(--hero-${name})`,
          mask: `var(--hero-${name})`,
          'background-color': 'currentColor',
          'vertical-align': 'middle',
          display: 'inline-block',
          width: size,
          height: size,
        }
      },
    },
    { values },
  )
})