'use strict'

const qs = s => document.querySelector(s)
const qsa = s => [...document.querySelectorAll(s)]

const runningCards = new Map()

const state = {
  lang: 'en-us',
  texts: {},
  langs: [],
  settings: null,
  wines: [],
  prefixes: { default: '', prefixes: [] },
  games: [],
  currentGame: null,
  currentView: 'library'
}

function t(key, ...args) {
  let text = state.texts[key] ?? key
  args.forEach((v, i) => {
    text = String(text).split(`{${i}}`).join(String(v))
  })
  return text
}

const ICONS = {
  // app grid - the library view (games AND other Windows apps)
  library: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="3.5" y="3.5" width="7.5" height="7.5" rx="2"/><rect x="13" y="3.5" width="7.5" height="7.5" rx="2"/><rect x="3.5" y="13" width="7.5" height="7.5" rx="2"/><rect x="13" y="13" width="7.5" height="7.5" rx="2"/></svg>',
  // stacked layers - wine prefixes stacked on top of each other
  prefixes: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 3 3.5 7.25 12 11.5l8.5-4.25L12 3Z"/><path d="m3.5 12.25 8.5 4.25 8.5-4.25"/><path d="m3.5 16.75 8.5 4.25 8.5-4.25"/></svg>',
  // wine glass - wine/proton runners
  wines: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M8 22h8"/><path d="M12 15v7"/><path d="M7 10h10"/><path d="M12 15a5 5 0 0 0 5-5c0-2-.5-4-2-8H9c-1.5 4-2 6-2 8a5 5 0 0 0 5 5Z"/></svg>',
  settings: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="3"/><path d="M19 12a7 7 0 0 0-.1-1.2l2-1.5-2-3.5-2.4 1a7 7 0 0 0-2-1.2L14 3h-4l-.5 2.6a7 7 0 0 0-2 1.2l-2.4-1-2 3.5 2 1.5a7 7 0 0 0 0 2.4l-2 1.5 2 3.5 2.4-1a7 7 0 0 0 2 1.2L10 21h4l.5-2.6a7 7 0 0 0 2-1.2l2.4 1 2-3.5-2-1.5c.06-.4.1-.8.1-1.2z"/></svg>',
  // arrow into a tray - import
  config: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"><path d="M4 21v-7M4 10V3M12 21v-9M12 8V3M20 21v-5M20 12V3M1 14h6M9 8h6M17 16h6"/></svg>',
  folder: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 7a2 2 0 0 1 2-2h4l2 2h8a2 2 0 0 1 2 2v8a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/></svg>',
  trash: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"><path d="M3 6h18M8 6V4h8v2M6 6l1 14h10l1-14M10 11v6M14 11v6"/></svg>',
  terminal: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M4 17l6-5-6-5M12 19h8"/></svg>',
  logs: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"><path d="M6 3h9l5 5v13a1 1 0 0 1-1 1H6a1 1 0 0 1-1-1V4a1 1 0 0 1 1-1zM9 12h6M9 16h6"/></svg>',
  star: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linejoin="round"><path d="M12 3l2.7 5.8 6.3.8-4.6 4.3 1.2 6.1-5.6-3.1-5.6 3.1 1.2-6.1L3 9.6l6.3-.8z"/></svg>',
  download: () => '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 3v12M6 9l6 6 6-6"/><path d="M4 21h16"/></svg>',
  chevronDown: () => '<svg class="chevron" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M6 9l6 6 6-6"/></svg>'
}

function applyI18n() {
  qsa('[data-t]').forEach(el => {
    el.textContent = t(el.dataset.t)
  })
  qsa('[data-ph]').forEach(el => {
    el.placeholder = t(el.dataset.ph)
  })
  qsa('custom-select').forEach(el => {
    if (el.refresh) el.refresh()
  })
  document.title = t('app.title')
}

function setButtonIcons() {
  const map = {
    'nav-library': ICONS.library(),
    'nav-prefixes': ICONS.prefixes(),
    'nav-wines': ICONS.wines(),
    'nav-settings': ICONS.settings()
  }
  for (const [id, svg] of Object.entries(map)) {
    const el = document.getElementById(id)
    const btn = el && el.querySelector('button')
    if (btn) btn.innerHTML = svg
  }
}

// Smoothly animate elements of `container` between their previous and new
// positions after `mutate()` changes the layout (FLIP technique).
function flipShift(container, mutate) {
  const entries = [...container.children].map(el => ({ el, top: el.getBoundingClientRect().top }))
  mutate()
  for (const { el, top } of entries) {
    if (!el.isConnected) continue
    const delta = top - el.getBoundingClientRect().top
    if (!delta) continue
    el.style.transition = 'none'
    el.style.transform = `translateY(${delta}px)`
    void el.offsetHeight // flush styles so the shift back animates
    el.style.transition = ''
    el.style.transform = ''
  }
}

function toast(message, kind) {
  const container = qs('#toasts')
  flipShift(container, () => {
    const el = document.createElement('div')
    el.className = 'toast' + (kind ? ' ' + kind : '')
    el.textContent = message
    container.appendChild(el)
    requestAnimationFrame(() => requestAnimationFrame(() => el.classList.add('show')))
    setTimeout(() => {
      el.classList.add('hide')
      // after the fade-out, free the slot with an animated shift instead of a jump
      setTimeout(() => flipShift(container, () => el.remove()), 300)
    }, 4000)
  })
}

function showModal(html) {
  const overlay = qs('#modal-overlay')
  qs('#modal').innerHTML = html
  overlay.style.display = 'flex'
  requestAnimationFrame(() => requestAnimationFrame(() => overlay.classList.add('show')))
  return qs('#modal')
}

function closeModal() {
  const overlay = qs('#modal-overlay')
  const modal = qs('#modal')
  if (overlay.style.display === 'none') return
  modal.classList.add('closing')
  overlay.classList.remove('show')
  setTimeout(() => {
    overlay.style.display = 'none'
    modal.classList.remove('closing')
    modal.innerHTML = ''
  }, 160)
}

function confirmModal(message, okLabel) {
  return new Promise(resolve => {
    const modal = showModal(`
      <h2>${t('dialog.confirm')}</h2>
      <p>${message}</p>
      <div class="modal-actions">
        <button class="button" id="modal-cancel">${t('dialog.cancel')}</button>
        <button class="button primary" id="modal-ok">${okLabel || t('dialog.ok')}</button>
      </div>
    `)
    modal.querySelector('#modal-cancel').onclick = () => {
      closeModal()
      resolve(false)
    }
    modal.querySelector('#modal-ok').onclick = () => {
      closeModal()
      resolve(true)
    }
  })
}

class CustomSelect {
  constructor(host, options, value, onChange) {
    this.host = host
    this.options = options
    this.value = value
    this.onChange = onChange
    this.render()
    if (!this.host.dataset.wired) {
      this.wire()
      this.host.dataset.wired = '1'
    }
  }

  render() {
    const selected = this.options.find(o => o.value === this.value)
    this.host.classList.add('custom-select')
    this.host.dataset.value = this.value ?? ''
    this.host.innerHTML = `
      <div class="custom-select-value">
        <span></span>
        ${ICONS.chevronDown()}
      </div>
      <div class="custom-select-options"></div>
    `
    this.host.querySelector('.custom-select-value span').textContent = selected ? selected.label : ''
    const box = this.host.querySelector('.custom-select-options')
    for (const opt of this.options) {
      const btn = document.createElement('button')
      btn.type = 'button'
      btn.className = 'custom-select-option' + (opt.value === this.value ? ' selected' : '')
      btn.textContent = opt.label
      btn.onclick = e => {
        e.stopPropagation()
        this.setValue(opt.value)
        this.close()
      }
      box.appendChild(btn)
    }
    this.host.refresh = () => {
      const sel = this.options.find(o => o.value === this.value)
      this.host.querySelector('.custom-select-value span').textContent = sel ? sel.label : ''
      const btns = box.querySelectorAll('.custom-select-option')
      this.options.forEach((opt, i) => {
        btns[i].textContent = opt.label
        btns[i].classList.toggle('selected', opt.value === this.value)
      })
    }
  }

  wire() {
    this.host.onclick = e => {
      if (e.target.closest('.custom-select-option')) return
      e.stopPropagation()
      this.toggle()
    }
    document.addEventListener('click', () => this.close())
  }

  toggle() {
    const wasOpen = this.host.classList.contains('open')
    CustomSelect.closeAll()
    if (!wasOpen) this.host.classList.add('open')
  }

  close() {
    this.host.classList.remove('open')
  }

  setValue(v) {
    this.value = v
    this.host.dataset.value = v ?? ''
    this.render()
    if (this.onChange) this.onChange(v)
  }

  update(options, value) {
    this.options = options
    if (value !== undefined) this.value = value
    this.host.dataset.value = this.value ?? ''
    this.render()
  }

  static closeAll() {
    qsa('.custom-select.open').forEach(el => el.classList.remove('open'))
  }
}

const selects = {}

const NAV_PARENT = {
  gameconfig: 'library'
}

function showView(name) {
  state.currentView = name
  qsa('.view').forEach(v => v.classList.remove('active'))
  const view = qs('#view-' + name)
  if (view) view.classList.add('active')
  const navName = NAV_PARENT[name] || name
  qsa('sidebarelement').forEach(el => el.classList.remove('active'))
  const nav = qs('#nav-' + navName)
  if (nav) nav.classList.add('active')
  if (name === 'library') renderLibrary()
  if (name === 'prefixes') renderPrefixes()
  if (name === 'wines') renderWines()
  if (name === 'settings') renderSettings()
}

async function loadAll() {
  const [langs, settings, wines, prefixes, games] = await Promise.all([
    window.plwl.i18nList(),
    window.plwl.settingsGet(),
    window.plwl.winesList(),
    window.plwl.prefixesList(),
    window.plwl.gamesList()
  ])
  state.langs = langs
  state.settings = settings
  state.wines = wines
  state.prefixes = prefixes
  state.games = games
  state.lang = settings.language || 'en-us'
  await loadLangTexts(state.lang)
}

async function loadLangTexts(code) {
  const lang = await window.plwl.i18nGet(code)
  if (lang && lang.texts) {
    state.texts = lang.texts
    state.lang = code
  }
}

function wineLabel(id) {
  const w = state.wines.find(w => w.id === id)
  return w ? w.label : (id === 'system' ? t('wines.system') : id)
}

function iconUrl(id) {
  return `plwl-icon://${encodeURIComponent(id)}/icon`
}

// Paths of imported (copy/move) apps live inside FILES/ and are stored
// relative to it in the registry (portable mode) - show them prefixed with
// files/ instead of the absolute install location. External (leave) apps
// keep their absolute path.
function displayPath(p) {
  if (!p) return ''
  const files = window.plwl.FILES_DIR
  if (files && p.startsWith(files + '/')) return 'files/' + p.slice(files.length + 1)
  return p
}

// Inverse of displayPath for input fields: accept a files/-prefixed (or bare,
// FILES-relative) path and resolve it to an absolute one.
function absPathInput(v) {
  if (!v) return v
  const files = window.plwl.FILES_DIR
  if (!files) return v
  if (v.startsWith('files/')) return files + '/' + v.slice(6)
  if (!v.includes('/') && !v.startsWith('.')) return files + '/' + v
  return v
}

function fmtPlaytime(seconds) {
  const s = Math.round(seconds || 0)
  if (s < 60) return t('library.playtimeSeconds', s)
  const h = Math.floor(s / 3600)
  const m = Math.floor((s % 3600) / 60)
  if (h > 0) return t('library.playtimeHM', h, m)
  return t('library.playtimeMin', m)
}

async function attachCardIcon(card, game) {
  const p = await window.plwl.gamesIconPath(game.id)
  if (!p) return
  const img = document.createElement('img')
  img.className = 'game-icon'
  img.alt = ''
  img.onerror = () => img.remove()
  img.onload = () => card.prepend(img)
  img.src = iconUrl(game.id)
  if (img.complete && img.naturalWidth > 0) card.prepend(img)
}

function renderLibrary() {
  const list = qs('#game-list')
  list.innerHTML = ''
  runningCards.clear()
  qs('#library-empty').style.display = state.games.length ? 'none' : 'flex'
  state.games.forEach((game, idx) => {
    const card = document.createElement('div')
    card.className = 'game-card'
    card.style.animationDelay = `${idx * 0.04}s`
    const portable = game.mode === 'copy' || game.mode === 'move'
    const last = game.lastPlayed ? new Date(game.lastPlayed).toLocaleDateString() : t('library.never')
    card.innerHTML = `
      <h3 title=""></h3>
      <div class="meta">
        <span class="badge ${portable ? 'primary' : ''}">${portable ? t('library.portable') : t('library.external')}</span>
        <span class="badge">${wineLabel(game.wine)}</span>
      </div>
      <div class="meta">${t('library.lastPlayed', last)}</div>
      <div class="meta">${t('library.playtime', fmtPlaytime(game.playSeconds || 0))}</div>
      <div class="actions">
        <button class="button primary small" data-act="play">${t('library.play')}</button>
        <button class="button small danger" data-act="kill" style="display:none">${t('library.stop')}</button>
        <button class="button small" data-act="config" title="${t('library.config')}">${ICONS.config()}</button>
        <button class="button small" data-act="folder" title="${t('library.openFolder')}">${ICONS.folder()}</button>
        <button class="button small" data-act="logs" title="${t('library.viewLogs')}">${ICONS.logs()}</button>
        <button class="button small danger" data-act="remove" title="${t('library.remove')}">${ICONS.trash()}</button>
      </div>
    `
    card.querySelector('h3').textContent = game.name
    const playBtn = card.querySelector('[data-act=play]')
    const killBtn = card.querySelector('[data-act=kill]')
    const metas = card.querySelectorAll('.meta')
    const applyRunning = isRunning => {
      playBtn.style.display = isRunning ? 'none' : ''
      killBtn.style.display = isRunning ? '' : 'none'
    }
    runningCards.set(game.id, { applyRunning, lastMeta: metas[1], playtimeMeta: metas[2], game })
    window.plwl.gamesIsRunning(game.id).then(applyRunning)
    playBtn.onclick = () => playGame(game)
    killBtn.onclick = async () => {
      await window.plwl.gamesKill(game.id)
      applyRunning(false)
    }
    card.querySelector('[data-act=config]').onclick = () => openGameConfig(game.id)
    card.querySelector('[data-act=folder]').onclick = () => window.plwl.shellOpenPath(game.workdir)
    card.querySelector('[data-act=logs]').onclick = async () => {
      const logs = await window.plwl.gamesGetLogs(game.id)
      if (logs.length) window.plwl.shellShowItemInFolder(logs[logs.length - 1])
      else toast(t('library.viewLogs'))
    }
    card.querySelector('[data-act=remove]').onclick = async () => {
      const note = game.mode === 'copy' || game.mode === 'move' ? t('library.removeFilesNote') : ''
      const ok = await confirmModal(t('library.removeConfirm', game.name, note), t('library.remove'))
      if (!ok) return
      await window.plwl.gamesRemove(game.id)
      toast(t('toast.gameRemoved', game.name), 'success')
      state.games = await window.plwl.gamesList()
      renderLibrary()
    }
    list.appendChild(card)
    attachCardIcon(card, game)
  })
}

async function playGame(game) {
  const res = await window.plwl.gamesRun(game.id)
  if (res.ok) {
    const entry = runningCards.get(game.id)
    if (entry) entry.applyRunning(true)
    toast(t('toast.started', game.name), 'success')
  } else if (res.error === 'already-running') {
    const entry = runningCards.get(game.id)
    if (entry) entry.applyRunning(true)
    toast(t('library.running'), 'error')
  } else {
    toast(t('toast.startFailed', game.name, res.error || ''), 'error')
  }
}

async function refreshLibraryData() {
  state.games = await window.plwl.gamesList()
  const runningList = await window.plwl.gamesListRunning()
  const runningSet = new Set(runningList)
  for (const [id, entry] of runningCards) {
    entry.applyRunning(runningSet.has(id))
    const fresh = state.games.find(g => g.id === id)
    if (!fresh) continue
    if (entry.lastMeta) {
      const last = fresh.lastPlayed ? new Date(fresh.lastPlayed).toLocaleDateString() : t('library.never')
      entry.lastMeta.textContent = t('library.lastPlayed', last)
    }
    if (entry.playtimeMeta) {
      entry.playtimeMeta.textContent = t('library.playtime', fmtPlaytime(fresh.playSeconds || 0))
    }
  }
}

function wireRealtime() {
  window.plwl.onGamesChanged(() => {
    if (state.currentView === 'library') refreshLibraryData()
  })
  // pick up live playtime/lastPlayed updates while a game is running
  setInterval(() => {
    if (state.currentView === 'library' && runningCards.size) refreshLibraryData()
  }, 15000)
}

async function startImportFlow() {
  const modal = showModal(`
    <h2>${t('library.import')}</h2>
    <p>${t('import.question')}</p>
    <div class="mode-buttons">
      <button class="button" data-mode="copy">${t('import.mode.copy')}</button>
      <button class="button" data-mode="move">${t('import.mode.move')}</button>
      <button class="button" data-mode="leave">${t('import.mode.leave')}</button>
    </div>
    <div class="modal-actions">
      <button class="button" id="modal-cancel">${t('dialog.cancel')}</button>
    </div>
  `)
  modal.querySelector('#modal-cancel').onclick = closeModal
  modal.querySelectorAll('[data-mode]').forEach(btn => {
    btn.onclick = async () => {
      const mode = btn.dataset.mode
      closeModal()
      const srcDir = await window.plwl.gamesPickFolder()
      if (!srcDir) return
      await doImport(srcDir, mode)
    }
  })
}

async function doImport(srcDir, mode) {
  const name = srcDir.split('/').filter(Boolean).pop()
  const modal = showModal(`
    <h2>${t('import.progress', name)}</h2>
    <div class="progress-row"><progress id="import-progress"></progress></div>
    <p id="import-status"></p>
  `)
  let count = 0
  window.plwl.onImportProgress(() => {
    count++
    const status = modal.querySelector('#import-status')
    if (status) status.textContent = t('import.fileDone', count)
  })
  try {
    const game = await window.plwl.gamesImport(srcDir, mode)
    closeModal()
    if (!game || game.ok === false) {
      const raw = (game && game.error) || ''
      const errText = raw === 'no-exe-found' ? t('import.noExe') : (raw || 'unknown error')
      toast(t('import.failed', errText), 'error')
      return
    }
    state.games = await window.plwl.gamesList()
    renderLibrary()
    toast(t('toast.importDone', game.name), 'success')
    await openGameConfig(game.id)
  } catch (err) {
    closeModal()
    toast(t('import.failed', (err && err.message) || String(err)), 'error')
  }
}

function renderPrefixes() {
  const list = qs('#prefix-list')
  list.innerHTML = ''
  const defs = state.prefixes
  if (!defs.prefixes.length) {
    const empty = document.createElement('p')
    empty.className = 'subtitle'
    empty.textContent = t('prefixes.empty')
    list.appendChild(empty)
    return
  }
  for (const p of defs.prefixes) {
    const locked = !!p.locked || p.name === 'Main'
    const row = document.createElement('div')
    row.className = 'list-row'
    row.innerHTML = `
      <div class="grow">
        <div class="title"></div>
      </div>
      ${p.name === defs.default ? `<span class="badge primary">${t('prefixes.default')}</span>` : ''}
      <div class="actions">
        <button class="button small" data-act="default" ${p.name === defs.default ? 'style="display:none"' : ''}></button>
        <button class="button small danger" data-act="delete" ${locked ? 'style="display:none"' : ''}></button>
      </div>
    `
    row.querySelector('.title').textContent = p.name
    const defBtn = row.querySelector('[data-act=default]')
    defBtn.textContent = t('prefixes.makeDefault')
    defBtn.onclick = async () => {
      const res = await window.plwl.prefixesSetDefault(p.name)
      if (res && res.ok !== false) toast(t('toast.prefixDefault', p.name), 'success')
      state.prefixes = await window.plwl.prefixesList()
      renderPrefixes()
    }
    const delBtn = row.querySelector('[data-act=delete]')
    delBtn.innerHTML = `${ICONS.trash()}<span>${t('prefixes.delete')}</span>`
    delBtn.onclick = async () => {
      const ok = await confirmModal(t('prefixes.deleteConfirm', p.name), t('prefixes.delete'))
      if (!ok) return
      const res = await window.plwl.prefixesDelete(p.name)
      if (res.ok) toast(t('toast.prefixDeleted', p.name), 'success')
      else if (res.error === 'isMain') toast(t('prefixes.mainLocked'), 'error')
      else toast(t('toast.prefixDeleteFailed', p.name), 'error')
      state.prefixes = await window.plwl.prefixesList()
      renderPrefixes()
    }
    list.appendChild(row)
  }
}

function renderWines() {
  const list = qs('#wine-list')
  list.innerHTML = ''
  const defaultWine = (state.settings && state.settings.defaultWine) || 'system'
  if (!state.wines.length) {
    const empty = document.createElement('p')
    empty.className = 'subtitle'
    empty.textContent = t('wines.empty')
    list.appendChild(empty)
  }
  for (const w of state.wines) {
    const isDefault = w.id === defaultWine
    const row = document.createElement('div')
    row.className = 'list-row'
    const typeBadge = w.type === 'proton' ? t('wines.type.proton') : (w.type === 'system' ? t('wines.type.system') : t('wines.type.wine'))
    row.innerHTML = `
      <div class="grow">
        <div class="title"></div>
        <div class="sub" title=""></div>
      </div>
      ${isDefault ? `<span class="badge primary">${t('wines.default')}</span>` : ''}
      <span class="badge">${typeBadge}</span>
      ${w.version ? `<span class="badge">${w.version}</span>` : ''}
      <div class="actions">
        <button class="button small" data-act="default" ${isDefault ? 'style="display:none"' : ''}></button>
        ${w.id !== 'system' ? `<button class="button small danger" data-act="delete"></button>` : ''}
      </div>
    `
    row.querySelector('.title').textContent = w.label
    row.querySelector('.sub').textContent = displayPath(w.path) || t('wines.systemHint')
    row.querySelector('.sub').title = row.querySelector('.sub').textContent
    const defBtn = row.querySelector('[data-act=default]')
    defBtn.textContent = t('wines.makeDefault')
    defBtn.onclick = async () => {
      const res = await window.plwl.winesSetDefault(w.id)
      if (res && res.ok) {
        state.settings = await window.plwl.settingsGet()
        toast(t('wines.defaultSet', w.label), 'success')
      }
      renderWines()
    }
    const delBtn = row.querySelector('[data-act=delete]')
    if (delBtn) {
      delBtn.innerHTML = `${ICONS.trash()}<span>${t('wines.delete')}</span>`
      delBtn.onclick = async () => {
        const ok = await confirmModal(t('wines.deleteConfirm', w.label), t('wines.delete'))
        if (!ok) return
        const res = await window.plwl.winesDelete(w.id)
        if (res.ok) {
          toast(t('wines.deleted', w.label), 'success')
          state.wines = await window.plwl.winesList()
          state.settings = await window.plwl.settingsGet()
        } else if (res.error === 'isSystem') {
          toast(t('wines.systemLocked'), 'error')
        }
        renderWines()
      }
    }
    list.appendChild(row)
  }
}

function renderSettings() {
  if (!selects['set-language']) {
    selects['set-language'] = new CustomSelect(qs('#set-language'), [], state.lang)
    selects['set-wine'] = new CustomSelect(qs('#set-wine'), [], 'system')
    selects['set-prefix'] = new CustomSelect(qs('#set-prefix'), [], '')
  }
  selects['set-language'].update(state.langs.map(l => ({ value: l.code, label: l.nameSelf })), state.lang)
  selects['set-wine'].update(state.wines.map(w => ({ value: w.id, label: w.label })), state.settings.defaultWine || 'system')
  selects['set-prefix'].update(state.prefixes.prefixes.map(p => ({ value: p.name, label: p.name })), state.prefixes.default)
  qs('#set-closetotray').checked = state.settings.closeToTray !== false
}

async function saveSettings() {
  state.settings = await window.plwl.settingsSet({
    language: selects['set-language'].value,
    defaultWine: selects['set-wine'].value,
    closeToTray: qs('#set-closetotray').checked
  })
  await window.plwl.prefixesSetDefault(selects['set-prefix'].value || state.prefixes.default)
  state.prefixes = await window.plwl.prefixesList()
  const lang = selects['set-language'].value
  if (lang !== state.lang) {
    await loadLangTexts(lang)
    applyI18n()
  }
  toast(t('settings.saved'), 'success')
  if (state.currentView === 'settings') renderSettings()
}

function renderWineOptions(selectId, selected) {
  const defaultWine = (state.settings && state.settings.defaultWine) || 'system'
  const defLabel = wineLabel(defaultWine)
  const opts = [
    { value: 'default', label: t('config.wineDefault', defLabel) },
    ...state.wines.map(w => ({ value: w.id, label: w.label }))
  ]
  const value = !selected || selected === 'default' ? 'default' : selected
  if (!selects[selectId]) selects[selectId] = new CustomSelect(qs('#' + selectId), opts, value)
  else selects[selectId].update(opts, value)
}

function renderPrefixOptions(selectId, selected) {
  const defs = state.prefixes
  const opts = [
    { value: '', label: t('config.prefixDefault', defs.default) },
    ...defs.prefixes.filter(p => p.name !== defs.default).map(p => ({ value: p.name, label: p.name }))
  ]
  if (!selects[selectId]) selects[selectId] = new CustomSelect(qs('#' + selectId), opts, selected || '')
  else selects[selectId].update(opts, selected || '')
}

async function refreshConfigIcon() {
  const game = state.currentGame
  if (!game) return
  const p = await window.plwl.gamesIconPath(game.id)
  const img = qs('#gc-icon')
  const ph = qs('#gc-icon-placeholder')
  img.onerror = () => {
    img.style.display = 'none'
    img.removeAttribute('src')
    ph.style.display = 'flex'
  }
  if (p) {
    img.onload = () => {
      img.style.display = ''
      ph.style.display = 'none'
    }
    img.src = iconUrl(game.id) + '?t=' + Date.now()
    if (img.complete && img.naturalWidth > 0) img.onload()
  } else {
    img.style.display = 'none'
    img.removeAttribute('src')
    ph.style.display = 'flex'
  }
}

async function openGameConfig(id) {
  const game = state.games.find(g => g.id === id)
  if (!game) return
  state.currentGame = JSON.parse(JSON.stringify(game))
  showView('gameconfig')
  qs('#gc-title').textContent = game.name
  qs('#gc-name').value = game.name
  refreshConfigIcon()
  qs('#gc-exe').value = displayPath(game.exePath)
  qs('#gc-workdir').value = displayPath(game.workdir)
  qs('#gc-args').value = game.args || ''
  qs('#gc-env').value = Object.entries(game.env || {}).map(([k, v]) => `${k}=${v}`).join('\n')
  renderWineOptions('gc-wine', game.wine)
  renderPrefixOptions('gc-prefix', game.prefix)
  renderOverrides(game.dllOverrides || [])
  renderTools()
}

async function createAppShortcut() {
  const game = state.currentGame
  if (!game) return
  const res = await window.plwl.gamesCreateShortcut(game.id)
  if (res && res.ok) {
    toast(t('config.shortcutCreated', game.name), 'success')
  } else {
    toast(t('config.shortcutFailed') + ': ' + ((res && res.error) || ''), 'error')
  }
}

function renderOverrides(overrides) {
  const box = qs('#gc-overrides')
  box.innerHTML = ''
  for (const o of overrides) {
    box.appendChild(buildOverrideRow(o))
  }
}

const OVERRIDE_OPTIONS = [
  { value: 'native', label: 'native' },
  { value: 'builtin', label: 'builtin' },
  { value: 'native,builtin', label: 'native,builtin' },
  { value: 'builtin,native', label: 'builtin,native' },
  { value: '', label: 'disabled' }
]

function buildOverrideRow(o) {
  const row = document.createElement('div')
  row.className = 'override-row'
  row.innerHTML = `
    <input class="dll" placeholder="dinput8">
    <button class="button small danger" data-act="del">${ICONS.trash()}</button>
  `
  row.querySelector('.dll').value = o.dll || ''
  const selectHost = document.createElement('span')
  new CustomSelect(selectHost, OVERRIDE_OPTIONS, o.setting || 'native')
  row.insertBefore(selectHost, row.querySelector('[data-act=del]'))
  row.querySelector('[data-act=del]').onclick = () => row.remove()
  return row
}

function addOverrideRow() {
  qs('#gc-overrides').appendChild(buildOverrideRow({ dll: '', setting: 'native' }))
  const rows = qsa('#gc-overrides .override-row')
  rows[rows.length - 1].querySelector('.dll').focus()
}

function readOverrides() {
  return qsa('#gc-overrides .override-row').map(row => ({
    dll: row.querySelector('.dll').value.trim(),
    setting: row.querySelector('.custom-select').dataset.value ?? 'native'
  })).filter(o => o.dll)
}

async function saveGameConfig() {
  const game = state.currentGame
  if (!game) return
  const env = {}
  qs('#gc-env').value.split('\n').forEach(line => {
    const idx = line.indexOf('=')
    if (idx > 0) env[line.slice(0, idx).trim()] = line.slice(idx + 1).trim()
  })
  const patch = {
    name: qs('#gc-name').value.trim() || game.name,
    exePath: absPathInput(qs('#gc-exe').value.trim()),
    workdir: absPathInput(qs('#gc-workdir').value.trim()),
    args: qs('#gc-args').value,
    wine: selects['gc-wine'].value,
    prefix: selects['gc-prefix'].value,
    env,
    dllOverrides: readOverrides()
  }
  await window.plwl.gamesUpdate(game.id, patch)
  state.games = await window.plwl.gamesList()
  toast(t('config.saved'), 'success')
  if (state.currentView === 'gameconfig') {
    state.currentGame = { ...state.currentGame, ...patch }
    qs('#gc-title').textContent = patch.name
  }
}

function renderTools() {
  const grid = qs('#gc-tools')
  grid.innerHTML = ''
  const tools = ['winecfg', 'regedit', 'taskmgr', 'cmd', 'control', 'eject']
  for (const tool of tools) {
    const btn = document.createElement('button')
    btn.className = 'button small'
    btn.innerHTML = `${ICONS.terminal()}<span>${tool}</span>`
    btn.onclick = async () => {
      const game = state.currentGame
      const res = await window.plwl.gamesRunTool(game.id, tool, '')
      if (res.ok) toast(t('toast.started', tool))
      else toast(t('toast.startFailed', tool, res.error || ''), 'error')
    }
    grid.appendChild(btn)
  }
}

async function runCustomTool() {
  const input = qs('#gc-custom-tool').value.trim()
  if (!input) return
  const [tool, ...rest] = input.split(/\s+/)
  const game = state.currentGame
  const res = await window.plwl.gamesRunTool(game.id, tool, rest.join(' '))
  if (res.ok) toast(t('toast.started', tool))
  else toast(t('toast.startFailed', tool, res.error || ''), 'error')
}

function wireEvents() {
  qsa('[data-nav]').forEach(btn => {
    btn.addEventListener('click', () => showView(btn.dataset.nav))
  })
  qs('#btn-import-top').addEventListener('click', startImportFlow)
  qs('#btn-import-empty').addEventListener('click', startImportFlow)
  qs('#btn-prefix-create').addEventListener('click', async () => {
    const input = qs('#prefix-name-input')
    const name = input.value.trim()
    if (!name) return
    const res = await window.plwl.prefixesCreate(name)
    if (!res.ok) {
      toast(t(res.error === 'alreadyExists' ? 'prefixes.exists' : 'prefixes.invalidName'), 'error')
      return
    }
    input.value = ''
    toast(t('toast.prefixCreated', res.name), 'success')
    state.prefixes = await window.plwl.prefixesList()
    renderPrefixes()
  })
  qs('#btn-wines-rescan').addEventListener('click', async () => {
    await window.plwl.winesRefresh()
    state.wines = await window.plwl.winesList()
    renderWines()
  })
  qs('#btn-wines-import').addEventListener('click', async () => {
    const srcDir = await window.plwl.dialogPickFile({ properties: ['openDirectory'], title: t('wines.importPick') })
    if (!srcDir) return
    const modal = showModal(`
      <h2>${t('wines.importing')}</h2>
      <div class="progress-row"><progress></progress></div>
    `)
    const res = await window.plwl.winesImport(srcDir)
    closeModal()
    if (res.ok) {
      toast(t('wines.imported', res.path), 'success')
      state.wines = await window.plwl.winesList()
    } else {
      toast(t('toast.importFailed') + ': ' + (res.error || ''), 'error')
    }
    renderWines()
  })
  qs('#btn-settings-save').addEventListener('click', saveSettings)
  qs('#btn-open-files').addEventListener('click', () => window.plwl.shellOpenPath(window.plwl.FILES_DIR))
  qs('#btn-gc-back').addEventListener('click', () => showView('library'))
  qs('#btn-gc-save').addEventListener('click', saveGameConfig)
  qs('#btn-gc-shortcut').addEventListener('click', createAppShortcut)
  qs('#gc-override-add').addEventListener('click', addOverrideRow)
  qs('#gc-exe-browse').addEventListener('click', async () => {
    const cur = absPathInput(qs('#gc-workdir').value.trim())
    const p = await window.plwl.dialogPickFile({ properties: ['openFile'], defaultPath: cur || window.plwl.FILES_DIR })
    if (p) qs('#gc-exe').value = displayPath(p)
  })
  qs('#gc-workdir-browse').addEventListener('click', async () => {
    const cur = absPathInput(qs('#gc-exe').value.trim())
    const p = await window.plwl.dialogPickFile({ properties: ['openDirectory'], defaultPath: cur || window.plwl.FILES_DIR })
    if (p) qs('#gc-workdir').value = displayPath(p)
  })
  qs('#gc-tool-run').addEventListener('click', runCustomTool)
  async function applyIconResult(res) {
    toast(res.ok ? t('config.icon.set') : t('config.icon.noIcon'), res.ok ? 'success' : 'error')
    if (res.ok) refreshConfigIcon()
  }
  qs('#gc-icon-auto').addEventListener('click', async () => {
    applyIconResult(await window.plwl.gamesAutoIcon(state.currentGame.id))
  })
  qs('#gc-icon-browse').addEventListener('click', async () => {
    const p = await window.plwl.dialogPickFile({
      properties: ['openFile'],
      title: t('config.icon.pick'),
      filters: [{ name: t('config.icon.pick'), extensions: ['png', 'jpg', 'jpeg', 'svg', 'ico', 'webp', 'gif', 'bmp', 'exe'] }]
    })
    if (!p) return
    applyIconResult(await window.plwl.gamesSetIconFile(state.currentGame.id, p))
  })
  qs('#gc-icon-reset').addEventListener('click', async () => {
    await window.plwl.gamesResetIcon(state.currentGame.id)
    refreshConfigIcon()
  })
  qs('#btn-gc-clear-playtime').addEventListener('click', async () => {
    const ok = await confirmModal(t('config.clearPlaytimeConfirm'), t('config.clearPlaytime'))
    if (!ok) return
    await window.plwl.gamesClearPlaytime(state.currentGame.id)
    state.games = await window.plwl.gamesList()
    state.currentGame = state.games.find(g => g.id === state.currentGame.id)
    toast(t('config.playtimeCleared'), 'success')
  })
  qs('#modal-overlay').addEventListener('click', e => {
    if (e.target === qs('#modal-overlay')) closeModal()
  })
  document.addEventListener('keydown', e => {
    if (e.key === 'Escape') closeModal()
  })
}

async function boot() {
  setButtonIcons()
  await loadAll()
  applyI18n()
  wireEvents()
  wireRealtime()
  qs('#loading').remove()
  qs('#main').style.display = 'flex'
  showView('library')
}

boot()