import { useCallback, useEffect, useState } from 'react'
import { Puzzle, RefreshCw } from 'lucide-react'

import { api } from '../lib/api'
import { toastMessage } from '../lib/utils'
import type { PluginInfo } from '../types'
import { Badge } from './ui/Badge'
import { Button } from './ui/Button'
import { Modal } from './ui/Modal'

interface PluginsResponse {
  ok?: boolean
  error?: string
  plugins?: PluginInfo[]
}

// 能力名（contract.CAPABILITIES 的键）→ 界面文案
const CAPABILITY_LABELS: Record<string, string> = {
  login: '登录',
  session: '会话',
  renew: '续期',
  profile: '账号信息',
  courses: '课程列表',
  discover: '课程详情',
  study: '学习',
  quiz: '测验',
  capture: '抓包',
  push: '推送',
}

export function PluginsDialog({
  open,
  onClose,
  notify,
  onChanged,
}: {
  open: boolean
  onClose: () => void
  notify: (toast: { message: string; tone?: 'info' | 'success' | 'error' }) => void
  onChanged: () => void
}) {
  const [plugins, setPlugins] = useState<PluginInfo[]>([])
  const [busy, setBusy] = useState('')
  const [loading, setLoading] = useState(false)

  const pull = useCallback(async () => {
    setLoading(true)
    try {
      const response = await api<PluginsResponse>('/api/plugins')
      setPlugins(response.plugins || [])
    } catch (error) {
      notify({ message: toastMessage(error), tone: 'error' })
    } finally {
      setLoading(false)
    }
  }, [notify])

  useEffect(() => {
    if (open) void pull()
  }, [open, pull])

  async function run(name: string, path: string, okText: string) {
    setBusy(name)
    try {
      const response = await api<PluginsResponse>(path, { method: 'POST' })
      if (response.plugins) setPlugins(response.plugins)
      if (response.ok === false) {
        notify({ message: response.error || '插件操作失败', tone: 'error' })
      } else {
        notify({ message: okText, tone: 'success' })
        onChanged()
      }
    } catch (error) {
      notify({ message: toastMessage(error), tone: 'error' })
    } finally {
      setBusy('')
    }
  }

  return (
    <Modal
      open={open}
      onClose={onClose}
      title="插件管理"
      size="lg"
      footer={
        <>
          <span className="mr-auto text-[11px] text-slate-400">
            共 {plugins.length} 个 · 停用后平台会从「添加账号」下拉里消失，推送渠道也会停止推送
          </span>
          <Button
            variant="soft"
            size="sm"
            icon={<RefreshCw className="size-3.5" />}
            loading={busy === '*'}
            onClick={() => void run('*', '/api/plugins/reload', '全部插件已重载')}
          >
            全部重载
          </Button>
        </>
      }
    >
      <div className="space-y-2.5">
        {plugins.map((plugin) => (
          <div key={plugin.name} className="rounded-xl border border-line bg-slate-50/70 px-3.5 py-3">
            <div className="flex flex-wrap items-center gap-2">
              <Puzzle className="size-4 shrink-0 text-brand-600" />
              <span className="text-[13px] font-semibold text-slate-900">
                {plugin.title || plugin.name}
              </span>
              <span className="text-[11px] text-slate-400">{plugin.name}</span>
              <Badge tone={plugin.enabled ? 'success' : 'neutral'} dot>
                {plugin.enabled ? '已启用' : '已停用'}
              </Badge>
              {plugin.enabled && (
                <Badge tone={plugin.loaded ? 'brand' : 'warning'}>
                  {plugin.loaded ? '已加载' : '未加载'}
                </Badge>
              )}
            </div>

            <div className="mt-2 space-y-1.5 rounded-lg border border-line/80 bg-white px-3 py-2">
              <div className="flex flex-wrap items-center gap-1.5">
                <span className="w-[52px] shrink-0 text-[11px] text-slate-400">适配网站</span>
                {plugin.sites?.length ? (
                  plugin.sites.map((site) => (
                    <span
                      key={site}
                      className="rounded-md border border-line bg-slate-50 px-1.5 py-0.5 font-mono text-[11px] text-slate-600"
                    >
                      {site}
                    </span>
                  ))
                ) : (
                  <span className="text-[11px] text-slate-400">—</span>
                )}
              </div>

              <div className="flex flex-wrap items-center gap-1.5">
                <span className="w-[52px] shrink-0 text-[11px] text-slate-400">能力</span>
                {plugin.capabilities.length ? (
                  plugin.capabilities.map((cap) => (
                    <span
                      key={cap}
                      className="rounded-md bg-brand-50 px-1.5 py-0.5 text-[11px] font-medium text-brand-700 ring-1 ring-inset ring-brand-100"
                    >
                      {CAPABILITY_LABELS[cap] || cap}
                    </span>
                  ))
                ) : (
                  <span className="text-[11px] text-slate-400">无</span>
                )}
              </div>

              <div className="flex flex-wrap items-center gap-x-3 gap-y-1 pl-[52px] text-[11px] text-slate-400">
                <span>
                  平台 <span className="text-slate-600">{plugin.label || '—'}</span>
                </span>
                <span>
                  id <span className="text-slate-600">{plugin.id || '—'}</span>
                </span>
              </div>
            </div>

            <div className="mt-2.5 flex items-center gap-2">
              <Button
                size="sm"
                variant={plugin.enabled ? 'secondary' : 'primary'}
                loading={busy === plugin.name}
                onClick={() =>
                  void run(
                    plugin.name,
                    `/api/plugins/${plugin.name}/${plugin.enabled ? 'disable' : 'enable'}`,
                    plugin.enabled ? `${plugin.name} 已停用` : `${plugin.name} 已启用`,
                  )
                }
              >
                {plugin.enabled ? '停用' : '启用'}
              </Button>
              <Button
                size="sm"
                variant="ghost"
                disabled={!plugin.enabled}
                loading={busy === plugin.name}
                onClick={() =>
                  void run(plugin.name, `/api/plugins/${plugin.name}/reload`, `${plugin.name} 已重载`)
                }
              >
                重载
              </Button>
            </div>
          </div>
        ))}

        {!plugins.length && !loading && (
          <p className="py-8 text-center text-[12.5px] text-slate-400">
            plugins/ 下还没有插件。建一个含 plugin.json + main.py 的目录丢进去，刷新即可看到。
          </p>
        )}
      </div>
    </Modal>
  )
}