/**
 * useApps — 应用注册表 + stdMenus 标准菜单模板
 * 从 js/apps.js 原始逻辑转写，保留完整功能。
 */
import { el } from '../utils'
import { wm } from './useWM'
import { ui } from './useUI'
import { fs, setAppsRef } from './useFS'

export const Apps = {
  registry: {} as Record<string, any>,

  register(def: any) {
    def.w = def.w || 720; def.h = def.h || 480
    def.minW = def.minW || 320; def.minH = def.minH || 240
    def.about = def.about || `${def.name} — macOS 网页版内置应用`
    this.registry[def.id] = def
  },

  get(id: string) { return this.registry[id] },

  open(id: string, args?: any) {
    const app = this.get(id)
    if (!app) { console.warn('[apps] 未注册:', id); return null }
    if (app.singleton !== false) {
      const ex = wm.windowsForApp(id)[0]
      if (ex) {
        if (args && app.onArgs) { try { app.onArgs(args, ex) } catch (e) { console.error(e) } }
        wm.focus(ex); return ex
      }
    }
    const win = wm.openWindow({
      app, title: app.name, icon: app.icon,
      w: app.w, h: app.h, minW: app.minW, minH: app.minH, data: args
    })
    try { app.render(win, args || {}) } catch (e) {
      console.error('[apps] 渲染失败:', id, e)
      if (win.body) win.body.append(el('div', { class: 'empty-state' },
        el('div', { class: 'es-icon', text: '⚠️' }),
        el('div', { text: `${app.name} 打开失败` })))
    }
    return win
  },

  quit(id: string) { wm.windowsForApp(id).slice().forEach((w: any) => wm.close(w)) },

  openPath(path: string) {
    const n = fs.node(path)
    if (!n) { ui.alert('找不到项目', `"${fs.baseName(path)}"不存在。`, '/assets/icons/finder.png'); return }
    if (n.t === 'd') return this.open('finder', { path })
    if (n.t === 'a') return this.open(n.app!)
    const ext = (path.split('.').pop() || '').toLowerCase()
    if (['png', 'jpg', 'jpeg', 'gif', 'webp', 'svg'].includes(ext) || ext === 'pdf')
      return this.open('preview', { path })
    return this.open('textedit', { path })
  },
}

/** 标准菜单构造模板 */
export function stdMenus(app: any, {
  file = [], edit = [], view = [], format = [], store = []
}: any = {}) {
  const menus: any[] = []

  menus.push({
    label: '文件',
    items: () => [
      ...file,
      file.length ? { sep: true } : null,
      { label: '关闭窗口', key: '⌘W', disabled: !wm.activeWin.value, action: () => wm.activeWin.value && wm.close(wm.activeWin.value) },
    ].filter(Boolean)
  })

  const editBase = () => {
    const a = document.activeElement as any
    const isText = a && (a.tagName === 'INPUT' || a.tagName === 'TEXTAREA' || a.isContentEditable)
    const doCmd = (cmd: string) => {
      if (!isText) return
      if (cmd === 'selectAll') { a.select ? a.select() : document.execCommand('selectAll'); return }
      if (cmd === 'cut' || cmd === 'copy') {
        const sel = a.value?.slice(a.selectionStart, a.selectionEnd) ?? ''
        if (cmd === 'copy' && sel) navigator.clipboard?.writeText(sel)
        if (cmd === 'cut' && sel) { navigator.clipboard?.writeText(sel); a.setRangeText('', a.selectionStart, a.selectionEnd, 'end'); a.dispatchEvent(new Event('input', { bubbles: true })) }
      }
      if (cmd === 'paste') navigator.clipboard?.readText().then((t: string) => { a.setRangeText(t, a.selectionStart, a.selectionEnd, 'end'); a.dispatchEvent(new Event('input', { bubbles: true })) }).catch(() => {})
    }
    return [
      ...edit,
      edit.length ? { sep: true } : null,
      { label: '剪切', key: '⌘X', disabled: !isText, action: () => doCmd('cut') },
      { label: '拷贝', key: '⌘C', disabled: !isText, action: () => doCmd('copy') },
      { label: '粘贴', key: '⌘V', disabled: !isText, action: () => doCmd('paste') },
      { label: '全选', key: '⌘A', disabled: !isText, action: () => doCmd('selectAll') },
    ].filter(Boolean)
  }
  menus.push({ label: '编辑', items: editBase })

  menus.push({
    label: '显示',
    items: () => [
      ...view,
      view.length ? { sep: true } : null,
      { label: wm.activeWin.value?.state === 'fullscreen' ? '退出全屏' : '进入全屏', key: '⌃⌘F', disabled: !wm.activeWin.value, action: () => wm.activeWin.value && wm.toggleFullscreen(wm.activeWin.value) },
    ].filter(Boolean)
  })

  if (format.length) menus.push({ label: '格式', items: () => format })
  if (store.length) menus.push({ label: '商店', items: () => store })

  menus.push({
    label: '窗口',
    items: () => {
      const wins = wm.windows
      return [
        { label: '最小化', key: '⌘M', disabled: !wm.activeWin.value, action: () => wm.activeWin.value && wm.minimize(wm.activeWin.value) },
        { label: '缩放', disabled: !wm.activeWin.value, action: () => wm.activeWin.value && wm.toggleZoom(wm.activeWin.value) },
        { sep: true },
        ...wins.map((w: any) => ({ label: w.title, checked: w === wm.activeWin.value, action: () => wm.focus(w) })),
        wins.length ? { sep: true } : null,
        { label: '全部前置', disabled: !wins.length, action: () => wins.forEach((w: any) => wm.restore(w)) },
      ].filter(Boolean)
    }
  })

  menus.push({
    label: '帮助',
    items: () => [
      { label: `${app.name}帮助`, action: () => ui.dialog({ icon: app.icon, title: `${app.name}帮助`, msg: app.about, buttons: ['好'] }) },
    ]
  })

  return menus
}

// Wire up FS reference to Apps
setAppsRef(Apps, null)