'use strict'

const path = require('path')
const fs = require('fs')

const APP_NAME = 'PLWL'

function findPng() {
  const p = path.resolve(__dirname, '..', 'renderer', 'plwl.png')
  try {
    fs.accessSync(p)
    return p
  } catch {
    return null
  }
}

function writeIconThemeDirs(png) {
  try {
    const sizes = { '16x16': 16, '32x32': 32, '48x48': 48, '256x256': 256 }
    const home = process.env.HOME
    if (!home) return
    const exe = path.join(require('./paths').APP_ROOT, 'plwl')
    const execPath = fs.existsSync(exe)
      ? exe
      : (process.env.PLWL_EXEC || 'plwl')
    const base = path.join(home, '.local', 'share', 'icons')
    for (const [dir, size] of Object.entries(sizes)) {
      const themeDir = path.join(base, 'hicolor', dir, 'apps')
      fs.mkdirSync(themeDir, { recursive: true })
      fs.copyFileSync(png, path.join(themeDir, 'plwl.png'))
    }
    const desktopDir = path.join(home, '.local', 'share', 'applications')
    fs.mkdirSync(desktopDir, { recursive: true })
    const desktop = [
      '[Desktop Entry]',
      'Type=Application',
      `Name=${APP_NAME}`,
      'Comment=Portable Linux Wine Launcher',
      `Exec=${execPath}`,
      `Icon=plwl`,
      'Terminal=false',
      'Categories=Game;'
    ].join('\n')
    fs.writeFileSync(path.join(desktopDir, 'plwl.desktop'), desktop)
  } catch {}
}

function setAppIcon(app) {
  const png = findPng()
  if (!png) return
  try {
    app.setIcon(png)
  } catch {}
  writeIconThemeDirs(png)
}

module.exports = { setAppIcon }