'use strict'

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

const prefixes = require('../src/prefixes')
const runner = require('../src/runner')
const wines = require('../src/wines')

async function main() {
  const created = prefixes.createPrefix('e2e-test')
  if (!created.ok && created.error !== 'alreadyExists') throw new Error('prefix create failed: ' + created.error)

  const game = {
    id: 'e2e-test',
    name: 'E2E Test',
    mode: 'leave',
    path: '.',
    exePath: 'C:\\windows\\system32\\cmd.exe',
    workdir: path.resolve('.'),
    wine: 'system',
    prefix: 'e2e-test',
    args: '/c echo PLGL-E2E-OK > C:\\plgl-e2e-out.txt',
    dllOverrides: [{ dll: 'dinput8', setting: 'native' }],
    env: { E2E_MARKER: '1' }
  }

  const { env } = runner.buildEnv({ game, wine: { id: 'system', type: 'system' }, systemWine: true })
  if (!env.WINEPREFIX.includes('e2e-test')) throw new Error('WINEPREFIX mismatch: ' + env.WINEPREFIX)
  if (env.WINEDLLOVERRIDES !== 'dinput8=native') throw new Error('dll overrides mismatch: ' + env.WINEDLLOVERRIDES)
  if (env.E2E_MARKER !== '1') throw new Error('game env not applied')
  console.log('PASS: system wine env', { WINEPREFIX: env.WINEPREFIX, WINEDLLOVERRIDES: env.WINEDLLOVERRIDES })

  const protonDir = path.join(require('../src/paths').DIRS.WINES, 'e2e-fake-proton')
  fs.mkdirSync(protonDir, { recursive: true })
  fs.writeFileSync(path.join(protonDir, 'proton'), '#!/usr/bin/env python3\n')
  await wines.refreshWines()
  const proton = wines.getWines().find(w => w.id === 'e2e-fake-proton')
  if (!proton) throw new Error('proton build not detected')
  if (proton.type !== 'proton') throw new Error('wrong type: ' + proton.type)

  const penv = runner.buildEnv({ game, wine: proton, systemWine: false }).env
  if (penv.STEAM_COMPAT_DATA_PATH !== path.join(require('../src/paths').DIRS.DATA, 'compat', 'e2e-test')) {
    throw new Error('compat path mismatch: ' + penv.STEAM_COMPAT_DATA_PATH)
  }
  if (penv.WINEPREFIX !== path.join(penv.STEAM_COMPAT_DATA_PATH, 'pfx')) throw new Error('proton WINEPREFIX mismatch')
  if (fs.readlinkSync(penv.STEAM_COMPAT_DATA_PATH) !== prefixes.prefixPath('e2e-test')) {
    throw new Error('compatdata is not symlinked to the prefix')
  }
  if (!fs.existsSync(penv.STEAM_COMPAT_CLIENT_INSTALL_PATH)) throw new Error('fake steam missing')
  console.log('PASS: proton env', {
    STEAM_COMPAT_DATA_PATH: penv.STEAM_COMPAT_DATA_PATH,
    CLIENT_INSTALL_PATH: penv.STEAM_COMPAT_CLIENT_INSTALL_PATH
  })

  console.log('launching real wine...')
  await runner.runGame({ game, wine: { id: 'system', type: 'system' }, systemWine: true })

  for (let i = 0; i < 45; i++) {
    await new Promise(r => setTimeout(r, 2000))
    const outFile = path.join(env.WINEPREFIX, 'drive_c', 'plgl-e2e-out.txt')
    if (fs.existsSync(outFile)) {
      console.log('OUTPUT FILE CONTENT:', fs.readFileSync(outFile, 'utf8').trim())
      console.log('E2E PASS: wine executed the exe and wrote the file')
      prefixes.deletePrefix('e2e-test')
      fs.rmSync(protonDir, { recursive: true, force: true })
      await wines.refreshWines()
      return
    }
  }
  console.log('E2E SOFT-FAIL: prefix init not finished in time (first wine run can be slow)')
  prefixes.deletePrefix('e2e-test')
  fs.rmSync(protonDir, { recursive: true, force: true })
  await wines.refreshWines()
}

main().catch(e => {
  console.error(e)
  process.exit(1)
})