import React, { useState, useEffect } from 'react'
import {
  Card, Tabs, Table, Button, Space, Tag, Form, Input, Select, message,
  Typography, Empty, Badge, Modal, Descriptions, Segmented,
} from 'antd'
import { ReloadOutlined, SendOutlined, StopOutlined } from '@ant-design/icons'
import { call, api } from './api.js'
import GovernancePanel from './GovernancePanel.jsx'

const { Text } = Typography

const statusMeta = {
  approved: { label: '待入库', color: 'green' },
  in_library: { label: '在库待发布', color: 'cyan' },
  published: { label: '流通中', color: 'blue' },
  revoked: { label: '已下架', color: 'red' },
}

const catLabel = { WD: '微短剧', WJ: '网络剧', DY: '网络电影', DH: '网络动画' }

// 各角色工作台共享的刷新钩子：通过 bump 触发全局重拉
function useTick() {
  const [tick, setTick] = useState(0)
  return [tick, () => setTick((t) => t + 1)]
}

// ============ CP 工作台 ============
function CPDesk({ onChanged }) {
  const [form] = Form.useForm()
  const [submitting, setSubmitting] = useState(false)

  async function submit() {
    const v = await form.validateFields()
    setSubmitting(true)
    const fh = 'fh-' + Date.now().toString(36)
    const epCount = Number(v.episodes) || 1
    const episodes = []
    for (let i = 1; i <= epCount; i++) {
      episodes.push({ episode: i, file_sha256: `${fh}-E${i}`, merkle_root: `mr-${fh}-E${i}` })
    }
    const res = await call('cp', 'POST', '/content/register', {
      title: v.title, episode_count: epCount, category: v.category,
      file_sha256: fh, merkle_root: 'mr-' + fh, perceptual_hash: 'ph-' + fh,
      episodes, cp_media_id: v.cpId, cp_name: v.cpName,
    })
    setSubmitting(false)
    if (res.ok) {
      message.success(`送审成功，流水号 ${res.data.data.review_id}（原片走审核渠道，哈希上链）`)
      onChanged()
    } else message.error(res.data.message || '送审失败')
  }

  return (
    <Card title="内容提供商工作台 · 送审申报" size="small">
      <Form form={form} layout="inline" initialValues={{
        title: '长安少年行', category: 'WD', episodes: 6,
        cpId: 'XAQJSL-2026-001', cpName: '西安曲江丝路文化传播有限公司',
      }}>
        <Form.Item label="作品" name="title" rules={[{ required: true }]}><Input style={{ width: 160 }} /></Form.Item>
        <Form.Item label="类目" name="category">
          <Select style={{ width: 110 }} options={Object.entries(catLabel).map(([v, l]) => ({ value: v, label: l }))} />
        </Form.Item>
        <Form.Item label="集数" name="episodes"><Input type="number" style={{ width: 80 }} /></Form.Item>
        <Form.Item label="CP" name="cpName"><Input style={{ width: 220 }} /></Form.Item>
        <Form.Item name="cpId" hidden><Input /></Form.Item>
        <Form.Item>
          <Button type="primary" icon={<SendOutlined />} loading={submitting} onClick={submit}>
            送审（原片送审核 + 哈希上链）
          </Button>
        </Form.Item>
      </Form>
      <Text type="secondary" style={{ fontSize: 12 }}>
        送审后到「审核监管工作台」的"待审队列"领取审核。
      </Text>
    </Card>
  )
}

// ============ 审核监管工作台 ============
function ReviewerDesk({ tick, onChanged }) {
  const [pending, setPending] = useState([])
  const [toIssue, setToIssue] = useState([])
  const [toIngest, setToIngest] = useState([])
  const [toPublish, setToPublish] = useState([])

  async function load() {
    const [p, i, ing, pub] = await Promise.all([
      call('reviewer', 'GET', '/content/reviews?status=pending'),
      call('regulator', 'GET', '/content/reviews?status=approved'),
      call('reviewer', 'GET', '/content/list?status=approved'),
      call('reviewer', 'GET', '/content/list?status=in_library'),
    ])
    setPending(p.data?.data?.reviews || [])
    setToIssue(i.data?.data?.reviews || [])
    setToIngest(ing.data?.data?.contents || [])
    setToPublish(pub.data?.data?.contents || [])
  }
  useEffect(() => { load() }, [tick])

  async function review(reviewID, approved) {
    const res = await call('reviewer', 'POST', '/content/csps-result', { review_id: reviewID, approved, reviewer_id: 'sxiptv-审核01' })
    if (res.ok) { message.success(approved ? 'CSPS 审核通过' : '已驳回'); onChanged() }
    else message.error(res.data.message)
  }
  async function issue(reviewID) {
    const res = await call('regulator', 'POST', '/content/issue', { review_id: reviewID, issuer: '陕西IPTV运营公司' })
    if (res.ok) { message.success(`发码成功：${res.data.data.ma_code}`); onChanged() }
    else message.error(res.data.message)
  }
  async function ingest(r) {
    const res = await call('reviewer', 'POST', '/content/ingest', { ma_code: r.ma_code, content_twin_id: r.content_twin_id, media_asset_id: 'SXMEDIA-' + r.ma_code.slice(-4), lib_name: '陕西IPTV媒体资源库' })
    if (res.ok) { message.success('已入媒资库'); onChanged() }
    else message.error(res.data.message)
  }
  async function publish(r) {
    const cert = `CERT|${r.ma_code}|x|x` // 演示证书；真实证书在发码时返回
    const res = await call('reviewer', 'POST', '/content/publish', { ma_code: r.ma_code, certificate: cert })
    if (res.ok) { message.success('已发布给运营商'); onChanged() }
    else message.error(res.data.message + '（提示：发布需发码时的原始证书，演示可用全流程页）')
  }

  const reviewCols = [
    { title: '流水号', dataIndex: 'review_id' },
    { title: '作品', dataIndex: 'title' },
    { title: '类目', dataIndex: 'category', render: (c) => <Tag>{catLabel[c] || c}</Tag> },
    { title: 'CP', dataIndex: 'cp_name', ellipsis: true },
    { title: '操作', render: (_, r) => (
      <Space>
        <Button size="small" type="primary" onClick={() => review(r.review_id, true)}>审核通过</Button>
        <Button size="small" danger onClick={() => review(r.review_id, false)}>驳回</Button>
      </Space>
    ) },
  ]
  const issueCols = [
    { title: '流水号', dataIndex: 'review_id' },
    { title: '作品', dataIndex: 'title' },
    { title: '类目', dataIndex: 'category', render: (c) => <Tag color="blue">{catLabel[c] || c}</Tag> },
    { title: '操作', render: (_, r) => <Button size="small" type="primary" onClick={() => issue(r.review_id)}>发码签发</Button> },
  ]
  const contentCols = (action, label, color) => [
    { title: 'MA 码', dataIndex: 'ma_code', render: (v) => <Text code copyable>{v}</Text> },
    { title: '作品', dataIndex: 'title' },
    { title: '状态', dataIndex: 'status', render: (s) => <Tag>{s}</Tag> },
    { title: '操作', render: (_, r) => <Button size="small" type="primary" onClick={() => action(r)}>{label}</Button> },
  ]

  const queue = (title, count, table) => (
    <Card size="small" title={<Space>{title}<Badge count={count} showZero color={count ? '#1677ff' : '#ccc'} /></Space>} style={{ marginBottom: 12 }}>
      {table}
    </Card>
  )

  return (
    <div>
      <Button icon={<ReloadOutlined />} size="small" onClick={load} style={{ marginBottom: 12 }}>刷新队列</Button>
      {queue('① 待审队列（CSPS 合规审核）', pending.length,
        <Table rowKey="review_id" size="small" pagination={false} columns={reviewCols} dataSource={pending}
          locale={{ emptyText: <Empty image={Empty.PRESENTED_IMAGE_SIMPLE} description="暂无待审" /> }} />)}
      {queue('② 待发码队列（审核通过 → 发码）', toIssue.length,
        <Table rowKey="review_id" size="small" pagination={false} columns={issueCols} dataSource={toIssue}
          locale={{ emptyText: <Empty image={Empty.PRESENTED_IMAGE_SIMPLE} description="暂无待发码" /> }} />)}
      {queue('③ 待入库队列（已发码 → 入媒资库）', toIngest.length,
        <Table rowKey="ma_code" size="small" pagination={false}
          columns={contentCols(ingest, '入媒资库', 'green')} dataSource={toIngest}
          locale={{ emptyText: <Empty image={Empty.PRESENTED_IMAGE_SIMPLE} description="暂无待入库" /> }} />)}
      {queue('④ 待发布队列（已入库 → 发布运营商）', toPublish.length,
        <Table rowKey="ma_code" size="small" pagination={false}
          columns={contentCols(publish, '发布', 'orange')} dataSource={toPublish}
          locale={{ emptyText: <Empty image={Empty.PRESENTED_IMAGE_SIMPLE} description="暂无待发布" /> }} />)}
    </div>
  )
}

// ============ 运营商工作台 ============
function OperatorDesk({ tick, onChanged }) {
  const [toInject, setToInject] = useState([])
  async function load() {
    const res = await call('operator', 'GET', '/content/list?status=published')
    setToInject(res.data?.data?.contents || [])
  }
  useEffect(() => { load() }, [tick])

  async function inject(r, tamper) {
    const fh = tamper ? 'TAMPERED-' + r.file_hash : r.file_hash
    const res = await call('operator', 'POST', '/content/inject', {
      content_twin_id: r.content_twin_id, ma_code: r.ma_code, file_sha256: fh,
      operator_id: 'CT-SX-IPTV', cdn_endpoint: 'cdn://ct-sx/vod/' + r.ma_code.slice(-4),
    })
    if (res.ok) { message.success(`注入成功 ${res.data.data.distribution_id}`); onChanged() }
    else message.warning('注入校验：' + (res.data.message || '哈希不匹配被拒'))
  }

  async function reportPlay(r) {
    // 演示：回传 1 次播放 + 1 次购买(15元)
    const res = await api.playback(r.operator_id || 'CT-SX-IPTV', [
      { ma_code: r.ma_code, event_type: 'play' },
      { ma_code: r.ma_code, event_type: 'purchase', revenue_cent: 1500 },
    ])
    if (res.ok) message.success(`已回传播放数据（接收 ${res.data.data.accepted} 条），可在监管片库查看分账`)
    else message.error(res.data.message)
  }

  const cols = [
    { title: 'MA 码', dataIndex: 'ma_code', render: (v) => <Text code>{v}</Text> },
    { title: '作品', dataIndex: 'title' },
    { title: '操作', render: (_, r) => (
      <Space>
        <Button size="small" type="primary" onClick={() => inject(r, false)}>CDN 注入（正确）</Button>
        <Button size="small" danger onClick={() => inject(r, true)}>模拟篡改注入</Button>
        <Button size="small" onClick={() => reportPlay(r)}>回传播放(含购买)</Button>
      </Space>
    ) },
  ]
  return (
    <Card size="small" title={<Space>运营商工作台 · 待注入队列<Badge count={toInject.length} showZero /></Space>}
      extra={<Button icon={<ReloadOutlined />} size="small" onClick={load}>刷新</Button>}>
      <Table rowKey="ma_code" size="small" pagination={false} columns={cols} dataSource={toInject}
        locale={{ emptyText: <Empty image={Empty.PRESENTED_IMAGE_SIMPLE} description="暂无待注入（需先在审核台发布）" /> }} />
    </Card>
  )
}

// ============ 总览看板 ============
function Overview({ tick }) {
  const [counts, setCounts] = useState({})
  async function load() {
    const statuses = ['approved', 'in_library', 'published', 'revoked']
    const results = await Promise.all([
      call('regulator', 'GET', '/content/reviews?status=pending'),
      call('regulator', 'GET', '/content/reviews?status=approved'),
      ...statuses.map((s) => call('regulator', 'GET', '/content/list?status=' + s)),
    ])
    setCounts({
      pending: results[0].data?.data?.reviews?.length || 0,
      toIssue: results[1].data?.data?.reviews?.length || 0,
      toIngest: results[2].data?.data?.contents?.length || 0,
      toPublish: results[3].data?.data?.contents?.length || 0,
      published: results[4].data?.data?.contents?.length || 0,
      revoked: results[5].data?.data?.contents?.length || 0,
    })
  }
  useEffect(() => { load() }, [tick])

  const items = [
    { label: '待审', v: counts.pending, c: '#faad14' },
    { label: '待发码', v: counts.toIssue, c: '#1677ff' },
    { label: '待入库', v: counts.toIngest, c: '#52c41a' },
    { label: '待发布', v: counts.toPublish, c: '#fa8c16' },
    { label: '已发布(流通中)', v: counts.published, c: '#13c2c2' },
    { label: '已下架', v: counts.revoked, c: '#f5222d' },
  ]
  return (
    <Card size="small" title="全局看板（各环节在途数量）" extra={<Button icon={<ReloadOutlined />} size="small" onClick={load}>刷新</Button>}>
      <Space size="large" wrap>
        {items.map((it) => (
          <Card key={it.label} size="small" style={{ width: 130, textAlign: 'center', borderTop: `3px solid ${it.c}` }}>
            <div style={{ fontSize: 28, fontWeight: 700, color: it.c }}>{it.v ?? 0}</div>
            <div style={{ color: '#888' }}>{it.label}</div>
          </Card>
        ))}
      </Space>
    </Card>
  )
}

// ============ 监管片库 ============
function LibraryDesk({ tick, onChanged }) {
  const [filter, setFilter] = useState('all')
  const [rows, setRows] = useState([])
  const [loading, setLoading] = useState(false)
  const [detail, setDetail] = useState(null) // {maCode, mappings, episodes}

  async function load() {
    setLoading(true)
    const status = filter === 'all' ? '' : filter
    const res = await call('regulator', 'GET', '/content/list?status=' + status)
    setRows(res.data?.data?.contents || [])
    setLoading(false)
  }
  useEffect(() => { load() }, [tick, filter])

  function confirmTakedown(r) {
    Modal.confirm({
      title: '违规应急下架',
      content: `确认对《${r.title}》(${r.ma_code}) 执行全网下架？将解析三方编码秒级同步。`,
      okText: '确认下架', okType: 'danger', cancelText: '取消',
      onOk: async () => {
        const res = await api.takedown(r.ma_code, '监管片库应急下架')
        if (res.ok) {
          message.success('已全网下架，受影响 CDN: ' + (res.data.data.cdn_endpoints || []).join(', '))
          onChanged()
        } else message.error(res.data.message || '下架失败')
      },
    })
  }

  async function viewDetail(r) {
    const [m, e] = await Promise.all([api.mappings(r.ma_code), api.episodes(r.ma_code)])
    setDetail({
      content: r,
      mappings: m.data?.data?.mappings || [],
      cdn: m.data?.data?.cdn_endpoints || [],
      episodes: e.data?.data?.episodes || [],
    })
  }

  function takedownEpisode(maCode, episode) {
    Modal.confirm({
      title: `集级下架 · 第 ${episode} 集`,
      content: `只下架《${maCode}#E${String(episode).padStart(2, '0')}》本集，整剧其他集继续流通。确认？`,
      okText: '下架本集', okType: 'danger', cancelText: '取消',
      onOk: async () => {
        const res = await api.takedownEpisode(maCode, episode, '监管片库集级下架')
        if (res.ok) {
          message.success(`第 ${episode} 集已下架`)
          await viewDetail(detail.content) // 刷新弹窗
          onChanged()
        } else message.error(res.data.message || '下架失败')
      },
    })
  }

  async function doRestore(r) {
    const res = await api.restore(r.ma_code)
    if (res.ok) { message.success('《' + r.title + '》已恢复上架'); onChanged() }
    else message.error(res.data.message || '恢复失败')
  }

  async function restoreEpisode(maCode, episode) {
    const res = await api.restoreEpisode(maCode, episode)
    if (res.ok) {
      message.success('第 ' + episode + ' 集已恢复上架')
      await viewDetail(detail.content)
      onChanged()
    } else message.error(res.data.message || '恢复失败')
  }

  const cols = [
    { title: 'MA 码', dataIndex: 'ma_code', render: (v) => <Text code copyable>{v}</Text> },
    { title: '作品', dataIndex: 'title' },
    { title: '集数', dataIndex: 'episode_count', width: 70 },
    { title: '状态', dataIndex: 'status', width: 110, render: (s) => {
      const m = statusMeta[s] || { label: s, color: 'default' }
      return <Tag color={m.color}>{m.label}</Tag>
    } },
    { title: '操作', width: 240, render: (_, r) => (
      <Space>
        <Button size="small" onClick={() => viewDetail(r)}>详情</Button>
        {r.status === 'revoked' ? (
          <Button size="small" type="primary" ghost onClick={() => doRestore(r)}>恢复上架</Button>
        ) : (
          <Button size="small" danger icon={<StopOutlined />} onClick={() => confirmTakedown(r)}>
            应急下架
          </Button>
        )}
      </Space>
    ) },
  ]

  return (
    <Card
      size="small"
      title={<Space>监管片库<Badge count={rows.length} showZero color="#1677ff" /></Space>}
      extra={
        <Space>
          <Segmented value={filter} onChange={setFilter} options={[
            { label: '全部', value: 'all' },
            { label: '流通中', value: 'published' },
            { label: '在库', value: 'in_library' },
            { label: '待入库', value: 'approved' },
            { label: '已下架', value: 'revoked' },
          ]} />
          <Button icon={<ReloadOutlined />} size="small" onClick={load}>刷新</Button>
        </Space>
      }
    >
      <Table rowKey="ma_code" size="small" loading={loading} columns={cols} dataSource={rows}
        pagination={{ pageSize: 8 }}
        locale={{ emptyText: <Empty image={Empty.PRESENTED_IMAGE_SIMPLE} description="片库暂无内容" /> }} />

      <Modal open={!!detail} onCancel={() => setDetail(null)} footer={null} width={820}
        title={detail ? `片库详情 · ${detail.content.title}` : ''}>
        {detail && (
          <Tabs size="small" items={[
            { key: 'overview', label: '概览', children: (
          <>
            <Descriptions bordered size="small" column={1} style={{ marginBottom: 12 }}>
              <Descriptions.Item label="MA 码">{detail.content.ma_code}</Descriptions.Item>
              <Descriptions.Item label="状态">
                <Tag color={(statusMeta[detail.content.status] || {}).color}>
                  {(statusMeta[detail.content.status] || {}).label || detail.content.status}
                </Tag>
              </Descriptions.Item>
              <Descriptions.Item label="整剧哈希">{detail.content.file_hash || '-'}</Descriptions.Item>
            </Descriptions>
            <Card size="small" title="三方编码映射" style={{ marginBottom: 12 }}>
              <Table rowKey={(r, i) => i} size="small" pagination={false}
                dataSource={detail.mappings}
                columns={[
                  { title: '角色', dataIndex: 'party' },
                  { title: '编码', dataIndex: 'party_id' },
                  { title: '名称', dataIndex: 'party_name', render: (v) => v || '-' },
                  { title: 'CDN', dataIndex: 'cdn_endpoint', render: (v) => v || '-' },
                ]} />
            </Card>
            <Card size="small" title={`集级哈希（${detail.episodes.length} 集）· 可单集下架`}>
              <Table rowKey="episode" size="small" pagination={false}
                dataSource={detail.episodes}
                columns={[
                  { title: '集', dataIndex: 'episode', width: 50 },
                  { title: '子标识', render: (_, r) => <Text code>{`${detail.content.ma_code}#E${String(r.episode).padStart(2, '0')}`}</Text> },
                  { title: '哈希', dataIndex: 'hash_value', ellipsis: true },
                  { title: '状态', width: 80, render: (_, r) => r.revoked ? <Tag color="red">已下架</Tag> : <Tag color="green">流通中</Tag> },
                  { title: '操作', width: 110, render: (_, r) => (
                    r.revoked
                      ? <Button size="small" type="primary" ghost onClick={() => restoreEpisode(detail.content.ma_code, r.episode)}>恢复本集</Button>
                      : <Button size="small" danger onClick={() => takedownEpisode(detail.content.ma_code, r.episode)}>下架本集</Button>
                  ) },
                ]} />
            </Card>
          </>
            ) },
            { key: 'gov', label: '权益与治理', children: <GovernancePanel maCode={detail.content.ma_code} /> },
          ]} />
        )}
      </Modal>
    </Card>
  )
}

export default function RoleDesk() {
  const [tick, bump] = useTick()
  return (
    <div>
      <div style={{ marginBottom: 16 }}><Overview tick={tick} /></div>
      <Tabs
        type="card"
        items={[
          { key: 'cp', label: '🟢 内容提供商', children: <CPDesk onChanged={bump} /> },
          { key: 'reviewer', label: '🔵 审核监管（CSPS/媒资）', children: <ReviewerDesk tick={tick} onChanged={bump} /> },
          { key: 'operator', label: '🟠 运营商', children: <OperatorDesk tick={tick} onChanged={bump} /> },
          { key: 'library', label: '🔴 监管片库（下架处置）', children: <LibraryDesk tick={tick} onChanged={bump} /> },
        ]}
      />
    </div>
  )
}