// 工作区弹层（提案 T4/D25）：工件/代理 经 OverlayHost 呈现。
// 重设计方案 阶段②（IA 对话优先）：插件面板/服务端声明工作区属系统能力，
// 只进「系统管理」分区（AdminZone），不占普通用户的 ⌘1–9；清单按角色收窄。
import { useState } from 'react'
import { store, useStore } from '../store'
import type { Run } from '../contracts'
import { api } from '../api'
import { OverlayHost, Icon, type DocBridge } from '@ui'
import { docBridge } from './Workbench'
import { AgentRow } from './Workbench'
import { artifactIcon, humanSize } from '../messageparts'

/** 工作区清单（顺序即 ⌘ 序号）：内置在前，插件面板/声明工作区仅管理员可见。 */
export function workspaceEntries(): { key: string; title: string; icon: string; shortcut: string }[] {
  const s = store.getState()
  const admin = !!s.me?.isAdmin
  const out = [
    { key: 'artifacts', title: '工件', icon: '📦', shortcut: '⌘1' },
    { key: 'agents', title: '代理', icon: '🤖', shortcut: '⌘2' },
    ...(admin ? [
      ...s.pluginPanels.map((p, i) => ({ key: `plugin:${p.id}`, title: p.title, icon: '🧩', shortcut: `⌘${i + 3}` })),
      ...s.serverWorkspaces.map((w, i) => ({ key: `ws:${w.id}`, title: w.title, icon: w.icon || '🗂', shortcut: w.shortcut ? `⌘${w.shortcut}` : `⌘${i + 3 + s.pluginPanels.length}` })),
    ] : []),
  ]
  return out.slice(0, 9)
}

export function Workspaces() {
  const active = useStore(s => s.ui.activeWorkspace)
  const artifacts = useStore(s => s.artifacts)
  const runs = useStore(s => s.runs)
  const pluginPanels = useStore(s => s.pluginPanels)
  const serverWorkspaces = useStore(s => s.serverWorkspaces)
  if (!active) return null
  const entry = workspaceEntries().find(e => e.key === active)
  const close = () => store.closeWorkspace()

  if (active === 'artifacts') {
    return <OverlayHost title="工件" icon="📦" shortcut="⌘1" badge={artifacts.length || undefined} onClose={close}>
      <ArtifactsPanel />
    </OverlayHost>
  }
  if (active === 'agents') {
    const convRuns = runs.filter(r => r.kind !== 'tool')
    return <OverlayHost title="代理" icon="🤖" shortcut="⌘2" onClose={close}>
      <AgentsPanel runs={convRuns} />
    </OverlayHost>
  }
  if (active.startsWith('plugin:')) {
    const panel = pluginPanels.find(p => `plugin:${p.id}` === active)
    return <OverlayHost title={panel?.title ?? '插件面板'} icon="🧩" onClose={close}
      nodes={panel?.body ?? []} docBridge={docBridge as DocBridge} onRefresh={() => store.refreshPlugins()} />
  }
  if (active.startsWith('ws:')) {
    const ws = serverWorkspaces.find(w => `ws:${w.id}` === active)
    return <OverlayHost title={ws?.title ?? '工作区'} icon={ws?.icon || '🗂'} shortcut={entry?.shortcut} onClose={close}
      nodes={ws?.body ?? []} docBridge={docBridge as DocBridge} onRefresh={() => store.refreshPlugins()} />
  }
  return null
}

/** 工件面板（工作区文件管理）：搜索 + kind 过滤 + 上传；行内 深预览/右栏预览/下载。
 *  删除是保留能力：DELETE /api/artifacts/{id} 与 api.deleteArtifact 均在（插件可用），
 *  系统默认不提供删除入口（提案 2026-09-30-file-preview-and-reserved-capabilities §2.2）。 */
export function ArtifactsPanel() {
  const artifacts = useStore(s => s.artifacts)
  const [q, setQ] = useState('')
  const [kind, setKind] = useState<'all' | 'document' | 'data' | 'image'>('all')

  const kinds = ['all', 'document', 'data', 'image'] as const
  const visible = artifacts.filter(a =>
    (kind === 'all' || a.kind === kind) && a.name.toLowerCase().includes(q.toLowerCase()))

  return (
    <div className="artifacts-panel">
      <div className="ap-toolbar">
        <input className="search-input" placeholder="搜索文件名…" value={q} onChange={e => setQ(e.target.value)} />
        {kinds.map(k => (
          <button key={k} className={`kind-pill ${kind === k ? 'on' : ''}`} onClick={() => setKind(k)}>
            {k === 'all' ? '全部' : k === 'document' ? '文档' : k === 'data' ? '数据' : '图片'}
          </button>
        ))}
        <label className="btn ghost ap-upload" title="上传文件到当前项目">
          <Icon name="paperclip" size={14} /> 上传
          <input type="file" multiple style={{ display: 'none' }} onChange={async e => {
            for (const f of Array.from(e.target.files ?? [])) await store.uploadAttachment(f)
            e.target.value = ''
          }} />
        </label>
      </div>
      {artifacts.length === 0
        ? <div className="empty-note">暂无文件——上传附件或让模型产出文档（mock：#doc）；这里可浏览、预览、下载</div>
        : visible.length === 0
          ? <div className="empty-note">没有匹配「{q}」的文件</div>
          : visible.map(a => (
            <div key={a.id} className="artifact-row" data-artifact-row={a.id}
              onClick={() => store.requestPreview(a)} title={`预览 ${a.name}（右栏，边聊边看）`}>
              <span className="ar-icon"><Icon name={artifactIcon(a.name, a.kind)} size={15} /></span>
              <span className="ar-main">
                <span className="name">{a.name}</span>
                <span className="meta">{a.kind} · {humanSize(a.size) || '—'} · {shortTime(a.updatedAt)}</span>
              </span>
              <span className="ar-acts">
                <button className="icon-btn" title="全屏预览" onClick={e => { e.stopPropagation(); store.requestPreview(a, 'full') }}><Icon name="eye" size={14} /></button>
                <a className="icon-btn" title="下载" href={api.artifactDownloadUrl(a.id)} download={a.name}
                  onClick={e => e.stopPropagation()}><Icon name="download" size={14} /></a>
              </span>
            </div>
          ))}
    </div>
  )
}

function shortTime(iso: string): string {
  try {
    const d = new Date(iso)
    const now = new Date()
    return d.toDateString() === now.toDateString()
      ? d.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })
      : d.toLocaleDateString([], { month: '2-digit', day: '2-digit' })
  } catch { return '' }
}

/** 代理面板（任务树；点击进 AgentTracker 深读）。 */
export function AgentsPanel({ runs }: { runs: Run[] }) {
  if (runs.length === 0) return <div className="empty-note">暂无运行——多代理任务会在此形成任务树（mock：#agents）</div>
  const roots = runs.filter(r => !r.parentRunId)
  return <div className="subagent-tree">
    {roots.map(r => (
      <div key={r.id}>
        <AgentRow run={r} depth={0} />
        {runs.filter(c => c.parentRunId === r.id).map(c => <AgentRow key={c.id} run={c} depth={1} />)}
      </div>
    ))}
  </div>
}

/** ⌘1–9 / Ctrl+1–9 全局快捷键（挂载于 App）。 */
export function workspaceShortcuts(e: KeyboardEvent) {
  if (!(e.metaKey || e.ctrlKey)) return
  const n = parseInt(e.key, 10)
  if (!Number.isInteger(n) || n < 1 || n > 9) return
  const entries = workspaceEntries()
  const hit = entries[n - 1]
  if (!hit) return
  e.preventDefault()
  store.openWorkspace(hit.key)
}