import React, { useState, useEffect } from 'react'

// 资讯页面 - 展示寻配号和行情信息（所有人可见）
export default function News() {
  const [activeTab, setActiveTab] = useState('deal')
  const [showSeekPublish, setShowSeekPublish] = useState(false)
  const [seekForm, setSeekForm] = useState({
    edition: '龙钞', type: '标百', category: '寻号', price: '', matchType: '模糊', features: 'J0', content: '', title: '', contact: ''
  })
  const [infoList, setInfoList] = useState([])
  const [loading, setLoading] = useState(false)

  const API_BASE = localStorage.getItem('API_BASE') || ''

  // 获取资讯列表
  useEffect(() => {
    fetchInfoList()
  }, [activeTab])

  // 自动生成寻号标题
  useEffect(() => {
    const title = `「寻号 ${seekForm.edition || '龙钞,马钞,蛇钞'} ${seekForm.type} ${seekForm.features || 'J0'} ${seekForm.matchType}」`
    setSeekForm(prev => ({...prev, title}))
  }, [seekForm.edition, seekForm.type, seekForm.features, seekForm.matchType])

  const fetchInfoList = async () => {
    setLoading(true)
    try {
      const token = localStorage.getItem('token')
      // 根据tab获取不同类型的数据
      const type = activeTab === 'seek' ? 'seek' : 'deal'
      const res = await fetch(`${API_BASE}/api/information/list?info_type=${type}`, {
        headers: { Authorization: `Bearer ${token}` }
      })
      const data = await res.json()
      setInfoList(data || [])
    } catch (e) {
      console.error(e)
    }
    setLoading(false)
  }

  const handleSeekPublish = async () => {
    if (!seekForm.contact) { alert('请填写联系方式'); return }
    try {
      const token = localStorage.getItem('token')
      const content = (seekForm.content ? seekForm.content + '\n' : '') + (seekForm.price ? `价格: ${seekForm.price}` : '') + (seekForm.features ? '\n号码特征: ' + seekForm.features : '') + '\n联系方式: ' + seekForm.contact
      const res = await fetch(`${API_BASE}/api/information/`, {
        method: 'POST', headers: { 'Authorization': `Bearer ${token}`, 'Content-Type': 'application/json' },
        body: JSON.stringify({ title: seekForm.title, content, info_type: 'seek' })
      })
      const data = await res.json()
      if (data.id || data.code === 0) {
        alert('发布成功！')
        setShowSeekPublish(false)
        setSeekForm({ edition: '龙钞', type: '标百', category: '寻号', price: '', matchType: '模糊', features: 'J0', content: '', title: '', contact: '' })
        fetchInfoList()
      } else { alert(data.message || '发布失败') }
    } catch (e) { alert('发布失败: ' + e.message) }
  }

  // Tab切换
  const tabs = [
    { key: 'seek', label: '🔍 寻配号' },
    { key: 'deal', label: '💰 成交行情' }
  ]

  const formatDate = (dateStr) => {
    if (!dateStr) return '-'
    const date = new Date(dateStr)
    return `${date.getMonth() + 1}/${date.getDate()}`
  }

  return (
    <div style={{ minHeight: '100vh', background: '#0f172a', paddingBottom: '60px' }}>
      {/* Tab导航 */}
      <div style={{ display: 'flex', padding: '12px 16px', background: '#1e293b', gap: '8px', overflowX: 'auto' }}>
        {tabs.map(tab => (
          <div
            key={tab.key}
            onClick={() => setActiveTab(tab.key)}
            style={{
              padding: '10px 20px',
              borderRadius: '8px',
              background: activeTab === tab.key ? '#3b82f6' : 'transparent',
              color: '#fff',
              cursor: 'pointer',
              whiteSpace: 'nowrap',
              fontSize: '14px'
            }}
          >
            {tab.label}
          </div>
        ))}
      </div>

      {/* 资讯列表 */}
      <div style={{ padding: '16px' }}>
          {showSeekPublish && activeTab === 'seek' && (
            <div style={{ background: '#1e293b', borderRadius: '12px', padding: '16px', marginBottom: '16px' }}>
              <div style={{ marginBottom: '12px' }}><label style={{ color: '#94a3b8', fontSize: '12px' }}>版别</label>
                <div style={{ display: 'flex', gap: '8px', marginTop: '6px' }}>
                  {['龙钞','马钞','蛇钞'].map(item => {
                    const isSelected = seekForm.edition ? seekForm.edition.split(',').includes(item) : false
                    return (
                      <button key={item} onClick={() => {
                        const eds = seekForm.edition ? seekForm.edition.split(',').filter(x => x) : []
                        if (isSelected) {
                          const idx = eds.indexOf(item)
                          if (idx > -1) eds.splice(idx, 1)
                        } else {
                          eds.push(item)
                        }
                        setSeekForm({...seekForm, edition: eds.join(',')})
                      }}
                        style={{ flex: 1, padding: '8px', borderRadius: '6px', border: isSelected?'2px solid #10b981':'1px solid #334155', background: isSelected?'rgba(16,185,129,0.2)':'#0f172a', color: '#fff', fontSize: '12px' }}>{item}</button>
                    )
                  })}
                </div>
              </div>
              <div style={{ marginBottom: '12px' }}><label style={{ color: '#94a3b8', fontSize: '12px' }}>类型</label>
                <div style={{ display: 'flex', gap: '8px', marginTop: '6px' }}>
                  {['标百','标十','单张'].map(e => (
                    <button key={e} onClick={() => setSeekForm({...seekForm, type: e})}
                      style={{ flex: 1, padding: '8px', borderRadius: '6px', border: seekForm.type===e?'2px solid #10b981':'1px solid #334155', background: seekForm.type===e?'rgba(16,185,129,0.2)':'#0f172a', color: '#fff', fontSize: '12px' }}>{e}</button>
                  ))}
                </div>
              </div>
              <div style={{ marginBottom: '12px' }}><label style={{ color: '#94a3b8', fontSize: '12px' }}>分类</label>
                <div style={{ display: 'flex', gap: '8px', marginTop: '6px' }}>
                  {['求购','出售','寻号'].map(e => (
                    <button key={e} onClick={() => setSeekForm({...seekForm, category: e})}
                      style={{ flex: 1, padding: '8px', borderRadius: '6px', border: seekForm.category===e?'2px solid #10b981':'1px solid #334155', background: seekForm.category===e?'rgba(16,185,129,0.2)':'#0f172a', color: '#fff', fontSize: '12px' }}>{e}</button>
                  ))}
                </div>
              </div>
              <div style={{ marginBottom: '12px' }}><label style={{ color: '#94a3b8', fontSize: '12px' }}>价格（选填）</label>
                <input type="text" value={seekForm.price} onChange={(e) => setSeekForm({...seekForm, price: e.target.value})} placeholder="请输入价格"
                  style={{ width: '100%', padding: '8px', marginTop: '6px', background: '#0f172a', border: '1px solid #334155', borderRadius: '6px', color: '#fff', fontSize: '13px', boxSizing: 'border-box' }} />
              </div>
              <div style={{ marginBottom: '12px' }}><label style={{ color: '#94a3b8', fontSize: '12px' }}>匹配度</label>
                <div style={{ display: 'flex', gap: '8px', marginTop: '6px' }}>
                  {['精准','模糊'].map(e => (
                    <button key={e} onClick={() => setSeekForm({...seekForm, matchType: e})}
                      style={{ flex: 1, padding: '8px', borderRadius: '6px', border: seekForm.matchType===e?'2px solid #10b981':'1px solid #334155', background: seekForm.matchType===e?'rgba(16,185,129,0.2)':'#0f172a', color: '#fff', fontSize: '12px' }}>{e}</button>
                  ))}
                </div>
              </div>
              <div style={{ marginBottom: '8px' }}><label style={{ color: '#94a3b8', fontSize: '12px' }}>号码特征（10位）</label>
                <div style={{ display: 'flex', gap: '4px', marginTop: '6px', flexWrap: 'wrap' }}>
                  {[0,1,2,3,4,5,6,7,8,9].map(i => {
                    const isFixed = i < 2
                    const placeholder = isFixed ? (i === 0 ? 'J' : '0') : 'X'
                    return <input key={i} ref={el => { if (el) el.dataset.index = i }} type="text" maxLength={1} 
                      value={isFixed ? placeholder : (seekForm.features?.[i] || '')} 
                      readOnly={isFixed} 
                      onChange={(e) => {
                        if (i < 2) return
                        const arr = (seekForm.features || 'J0XXXXXXXX').split('')
                        arr[i] = e.target.value.toUpperCase()
                        setSeekForm({...seekForm, features: arr.join('')})
                        // 输入后自动跳转下一个
                        if (e.target.value && i < 9) {
                          setTimeout(() => {
                            const nextInput = document.querySelector(`input[data-index="${i+1}"]`)
                            if (nextInput) nextInput.focus()
                          }, 0)
                        }
                      }} 
                      placeholder={placeholder} 
                      style={{ width: '32px', height: '36px', textAlign: 'center', padding: '6px', background: '#0f172a', border: '1px solid #334155', borderRadius: '4px', color: isFixed ? '#10b981' : '#fff', fontSize: '14px', boxSizing: 'border-box' }} />
                  })}
                </div>
                <div style={{ color: '#64748b', fontSize: '10px', marginTop: '6px' }}>X=任意数字 A=非4 B=非47 C=非347 D=非247 E=非2347 F=非12347 F=非23457 G=非123457</div>
              </div>
              <div style={{ marginBottom: '12px' }}><label style={{ color: '#94a3b8', fontSize: '12px' }}>正文</label>
                <textarea value={seekForm.content || ''} onChange={(e) => setSeekForm({...seekForm, content: e.target.value})} placeholder="请输入详细信息..."
                  style={{ width: '100%', padding: '8px', marginTop: '6px', background: '#0f172a', border: '1px solid #334155', borderRadius: '6px', color: '#fff', fontSize: '13px', boxSizing: 'border-box', resize: 'vertical', minHeight: '60px' }} />
              </div>
              <div style={{ marginBottom: '12px' }}><label style={{ color: '#ef4444', fontSize: '12px' }}>联系方式 *</label>
                <input type="text" value={seekForm.contact || ''} onChange={(e) => setSeekForm({...seekForm, contact: e.target.value})} placeholder="请输入手机号或微信"
                  style={{ width: '100%', padding: '8px', marginTop: '6px', background: '#0f172a', border: '1px solid #334155', borderRadius: '6px', color: '#fff', fontSize: '13px', boxSizing: 'border-box' }} />
              </div>
              <div style={{ marginBottom: '12px' }}><label style={{ color: '#94a3b8', fontSize: '12px' }}>标题（自动生成）</label>
                <input type="text" value={seekForm.title} readOnly
                  style={{ width: '100%', padding: '8px', marginTop: '6px', background: '#0f172a', border: '1px solid #334155', borderRadius: '6px', color: '#fff', fontSize: '13px', boxSizing: 'border-box' }} onChange={(e) => setSeekForm({...seekForm, title: e.target.value})} />
              </div>
              <div style={{ display: 'flex', gap: '12px' }}>
                <button onClick={handleSeekPublish} style={{ flex: 1, padding: '12px', background: '#10b981', border: 'none', borderRadius: '8px', color: '#fff', fontSize: '14px', fontWeight: 'bold', cursor: 'pointer' }}>发布寻号</button>
                <button onClick={() => setShowSeekPublish(false)} style={{ flex: 1, padding: '12px', background: 'transparent', border: '1px solid #334155', borderRadius: '8px', color: '#94a3b8', fontSize: '14px', cursor: 'pointer' }}>取消</button>
              </div>
            </div>
          )}
        <h3 style={{ color: '#fff', marginBottom: '16px' }}>
          {activeTab === 'seek' ? '🔍 寻配号信息' : '💰 成交行情信息'}
            {activeTab === 'seek' && (
              <div style={{ display: 'flex', gap: '8px', marginLeft: 'auto' }}>
                <button onClick={() => setShowSeekPublish(!showSeekPublish)} style={{ padding: '6px 12px', background: showSeekPublish ? '#6b7280' : '#10b981', border: 'none', borderRadius: '6px', color: '#fff', fontSize: '12px', cursor: 'pointer' }}>
                  '+ 发布寻号'
                </button>
              </div>
            )}
        </h3>
        
        {loading ? (
          <div style={{ color: '#94a3b8', textAlign: 'center', padding: '40px' }}>加载中...</div>
        ) : infoList.length === 0 ? (
          <div style={{ color: '#94a3b8', textAlign: 'center', padding: '40px' }}>
            暂无{activeTab === 'seek' ? '寻配号' : '成交行情'}信息
          </div>
        ) : (
          <div style={{ display: 'flex', flexDirection: 'column', gap: '12px' }}>
            {infoList.map(item => (
              <div key={item.id} style={{ background: '#1e293b', borderRadius: '12px', padding: '16px' }}>
                <div style={{ color: '#fbbf24', fontSize: '15px', fontWeight: '500', marginBottom: '8px' }}>
                  {item.title}
                </div>
                <div style={{ color: '#94a3b8', fontSize: '12px', marginBottom: '8px' }}>
                  {formatDate(item.created_at)} | {item.info_source || '系统'}
                </div>
                {item.content && (
                  <div style={{ color: '#e2e8f0', fontSize: '14px', lineHeight: '1.6' }}>
                    {item.content}
                  </div>
                )}
              </div>
            ))}
          </div>
        )}
      </div>
    </div>
  )
}