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#!/usr/bin/env node

'use strict'

const fs = require('node:fs').promises
const path = require('node:path')
const process = require('node:process')
const picocolors = require('picocolors')
const { loadConfig, optimize } = require('svgo')

const iconsDir = path.join(__dirname, '../icons/')

const VERBOSE = process.argv.includes('--verbose')

async function processFile(file, config) {
  const filepath = path.join(iconsDir, file)
  const basename = path.basename(file, '.svg')

  const originalSvg = await fs.readFile(filepath, 'utf8')
  const { data: optimizedSvg } = await optimize(originalSvg, { path: filepath, ...config })

  // svgo will always add a final newline when in pretty mode
  const resultSvg = optimizedSvg.trim()

  if (resultSvg !== originalSvg) {
    await fs.writeFile(filepath, resultSvg, 'utf8')
  }

  if (VERBOSE) {
    console.log(`- ${basename}`)
  }
}

(async () => {
  try {
    const basename = path.basename(__filename)
    const timeLabel = picocolors.cyan(`[${basename}] finished`)

    console.log(picocolors.cyan(`[${basename}] started`))
    console.time(timeLabel)

    const files = await fs.readdir(iconsDir)
    const config = await loadConfig(path.join(__dirname, '../svgo.config.js'))

    await Promise.all(files.map(file => processFile(file, config)))

    const filesLength = files.length

    console.log(picocolors.green('\nSuccess, prepared %s icon%s!'), filesLength, filesLength === 1 ? '' : 's')
    console.timeEnd(timeLabel)
  } catch (error) {
    console.error(error)
    process.exit(1)
  }
})()