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

// 信息发布页面 - 仅信息员/管理员可用
export default function Info() {
  const [activeTab, setActiveTab] = useState('publish')
  const [showPublish, setShowPublish] = useState(false)
  const [myList, setMyList] = useState([])
  const [loading, setLoading] = useState(false)

  // 表单数据
  const [formData, setFormData] = useState({
    edition: '龙钞',
    type: '标百',
    isGraded: true,
    category: '成交',
    source: '直播',
    prices: {},
    title: '',
    content: ''
  })

  // 自动生成标题
  useEffect(() => {
    const now = new Date()
    const date = `${now.getFullYear()}/${now.getMonth() + 1}/${now.getDate()}`
    const gradeNote = formData.isGraded ? '（评级币）' : '（裸钞）'
    const title = `「${date} ${formData.edition} ${formData.type} ${formData.category} 行情信息${gradeNote}」`
    setFormData(prev => ({...prev, title}))
  }, [formData.edition, formData.type, formData.isGraded, formData.category])

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

  // 获取我的发布列表
  useEffect(() => {
    if (activeTab === 'manage') {
      fetchMyList()
    }
  }, [activeTab])

  const fetchMyList = async () => {
    setLoading(true)
    try {
      const token = localStorage.getItem('token')
      const res = await fetch(`${API_BASE}/api/information/my`, {
        headers: { Authorization: `Bearer ${token}` }
      })
      const data = await res.json()
      setMyList(data || [])
    } catch (e) {
      console.error(e)
    }
    setLoading(false)
  }

  // 发布信息
  const handlePublish = async () => {
    if (!formData.title) {
      alert('请填写标题')
      return
    }
    
    try {
      const token = localStorage.getItem('token')
      const gradeNote = formData.isGraded ? '（评级币）' : '（裸钞）'
      
      let priceContent = ''
      if (formData.prices && Object.keys(formData.prices).length > 0) {
        priceContent = '\n价格：'
        const priceLabels = {
          price_4: '带4',
          price_no4: '无4',
          price_no47: '无47',
          price_no347: '无347',
          price_no1347: '无1347',
          price_no247: '无247',
          price_no1247: '无1247',
          price_no12347: '无12347'
        }
        Object.entries(formData.prices).forEach(([key, value]) => {
          if (value) {
            priceContent += `${priceLabels[key] || key}:¥${value} `
          }
        })
      }
      
      const res = await fetch(`${API_BASE}/api/information/publish`, {
        method: 'POST',
        headers: { 
          'Authorization': `Bearer ${token}`,
          'Content-Type': 'application/json'
        },
        body: JSON.stringify({
          title: formData.title,
          content: formData.content + priceContent,
          info_type: formData.category === '成交' ? 'deal' : 'seek'
        })
      })
      
      const data = await res.json()
      if (data.id || data.code === 0) {
        alert('发布成功！')
        setShowPublish(false)
        setFormData({
          edition: '龙钞',
          type: '标百',
          isGraded: true,
          category: '成交',
          source: '直播',
          prices: {},
          title: '',
          content: ''
        })
        fetchMyList()
      } else {
        alert(data.message || '发布失败')
      }
    } catch (e) {
      alert('发布失败: ' + e.message)
    }
  }

  // Tab切换
  const tabs = [
    { key: 'publish', label: '📝 发布行情' },
    { key: 'manage', label: '📋 发布管理' }
  ]

  // 按钮选择组件
  const ButtonGroup = ({ options, value, onChange, label }) => (
    <div style={{ marginBottom: '14px' }}>
      {label && <label style={{ color: '#94a3b8', fontSize: '12px', display: 'block', marginBottom: '6px' }}>{label}</label>}
      <div style={{ display: 'flex', gap: '8px' }}>
        {options.map(opt => (
          <button
            key={opt.value}
            onClick={() => onChange(opt.value)}
            style={{
              flex: 1,
              padding: '10px',
              borderRadius: '6px',
              border: value === opt.value ? '2px solid #fbbf24' : '1px solid #334155',
              background: value === opt.value ? 'rgba(251,191,36,0.2)' : '#0f172a',
              color: '#fff',
              cursor: 'pointer',
              fontSize: '14px'
            }}
          >
            {opt.label}
          </button>
        ))}
      </div>
    </div>
  )

  // 价格网格
  const PriceGrid = () => {
    const priceItems = [
      { key: 'price_4', label: '带4' },
      { key: 'price_no4', label: '无4' },
      { key: 'price_no47', label: '无47' },
      { key: 'price_no347', label: '无347' },
      { key: 'price_no1347', label: '无1347' },
      { key: 'price_no247', label: '无247' },
      { key: 'price_no1247', label: '无1247' },
      { key: 'price_no12347', label: '无12347' }
    ]
    
    return (
      <div style={{ marginBottom: '14px' }}>
        <label style={{ color: '#94a3b8', fontSize: '12px', display: 'block', marginBottom: '6px' }}>价格（可选）</label>
        <div style={{ display: 'grid', gridTemplateColumns: 'repeat(4, 1fr)', gap: '8px' }}>
          {priceItems.map(item => (
            <div key={item.key}>
              <label style={{ color: '#64748b', fontSize: '11px' }}>{item.label}</label>
              <input
                type="number"
                value={formData.prices?.[item.key] || ''}
                onChange={(e) => setFormData({
                  ...formData, 
                  prices: {...formData.prices, [item.key]: e.target.value}
                })}
                placeholder="¥"
                style={{
                  width: '100%',
                  padding: '8px',
                  background: '#0f172a',
                  border: '1px solid #334155',
                  borderRadius: '4px',
                  color: '#fff',
                  boxSizing: 'border-box',
                  fontSize: '13px'
                }}
              />
            </div>
          ))}
        </div>
      </div>
    )
  }

  const formatDate = (dateStr) => {
    if (!dateStr) return '-'
    const date = new Date(dateStr)
    return `${date.getMonth() + 1}/${date.getDate()} ${date.getHours()}:${String(date.getMinutes()).padStart(2, '0')}`
  }

  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>

      {/* 发布行情 */}
      {activeTab === 'publish' && (
        <div style={{ padding: '16px' }}>
          <div style={{ marginBottom: '16px', textAlign: 'right' }}>
            <button
              onClick={() => setShowPublish(!showPublish)}
              style={{
                background: '#3b82f6',
                color: '#fff',
                border: 'none',
                padding: '10px 20px',
                borderRadius: '8px',
                cursor: 'pointer',
                fontSize: '14px'
              }}
            >
              {showPublish ? '❌ 取消' : '➕ 新增发布'}
            </button>
          </div>

          {showPublish && (
            <div style={{ background: '#1e293b', borderRadius: '12px', padding: '16px', marginBottom: '16px' }}>
              <h3 style={{ color: '#fbbf24', marginTop: 0, marginBottom: '16px' }}>📝 发布行情信息</h3>
              
              <ButtonGroup label="版别 *" options={[
                { value: '龙钞', label: '🐉 龙钞' },
                { value: '马钞', label: '🐎 马钞' },
                { value: '蛇钞', label: '🐍 蛇钞' },
                { value: '其他', label: '📄 其他' }
              ]} value={formData.edition} onChange={(v) => setFormData({...formData, edition: v})} />

              <div style={{ marginBottom: '14px' }}>
                <div style={{ display: 'flex', gap: '12px' }}>
                  <div style={{ flex: 2 }}>
                    <label style={{ color: '#94a3b8', fontSize: '12px' }}>类型 *</label>
                    <div style={{ display: 'flex', gap: '6px', marginTop: '6px' }}>
                      {['标百', '标十', '单张'].map(t => (
                        <button key={t} onClick={() => setFormData({...formData, type: t})}
                          style={{ flex: 1, padding: '10px', borderRadius: '6px',
                            border: formData.type === t ? '2px solid #fbbf24' : '1px solid #334155',
                            background: formData.type === t ? 'rgba(251,191,36,0.2)' : '#0f172a',
                            color: '#fff', cursor: 'pointer', fontSize: '13px' }}>
                          {t}
                        </button>
                      ))}
                    </div>
                  </div>
                  <div style={{ flex: 1 }}>
                    <label style={{ color: '#94a3b8', fontSize: '12px' }}>是否评级</label>
                    <button onClick={() => setFormData({...formData, isGraded: !formData.isGraded})}
                      style={{ width: '100%', padding: '10px', marginTop: '6px', borderRadius: '6px',
                        border: formData.isGraded ? '2px solid #fbbf24' : '1px solid #334155',
                        background: formData.isGraded ? 'rgba(251,191,36,0.2)' : '#0f172a',
                        color: formData.isGraded ? '#fbbf24' : '#94a3b8', cursor: 'pointer', fontSize: '13px' }}>
                      {formData.isGraded ? '✅ 评级' : '○ 未评级'}
                    </button>
                  </div>
                </div>
              </div>

              <ButtonGroup label="分类 *" options={[
                { value: '成交', label: '💰 成交' },
                { value: '求购', label: '🔍 求购' },
                { value: '出售', label: '💵 出售' }
              ]} value={formData.category} onChange={(v) => setFormData({...formData, category: v})} />

              <ButtonGroup label="信息源 *" options={[
                { value: '直播', label: '📺 直播' },
                { value: '一尘', label: '💼 一尘' },
                { value: '爱藏', label: '📦 爱藏' },
                { value: '其他', label: '📋 其他' }
              ]} value={formData.source} onChange={(v) => setFormData({...formData, source: v})} />

              <PriceGrid />

              <div style={{ marginBottom: '14px' }}>
                <label style={{ color: '#94a3b8', fontSize: '12px' }}>标题（自动生成）</label>
                <input type="text" value={formData.title} readOnly
                  style={{ width: '100%', padding: '10px', marginTop: '6px', background: '#0f172a',
                    border: '1px solid #334155', borderRadius: '6px', color: '#fbbf24', fontSize: '14px', boxSizing: 'border-box' }} />
              </div>

              <div style={{ marginBottom: '16px' }}>
                <label style={{ color: '#94a3b8', fontSize: '12px' }}>正文</label>
                <textarea value={formData.content} onChange={(e) => setFormData({...formData, content: e.target.value})}
                  placeholder="请输入详细信息..." rows={4}
                  style={{ width: '100%', padding: '10px', marginTop: '6px', background: '#0f172a',
                    border: '1px solid #334155', borderRadius: '6px', color: '#fff', resize: 'vertical', boxSizing: 'border-box' }} />
              </div>

              <button onClick={handlePublish}
                style={{ width: '100%', padding: '14px', background: 'linear-gradient(135deg, #f59e0b 0%, #d97706 100%)',
                  border: 'none', borderRadius: '8px', color: '#fff', fontSize: '16px', fontWeight: 'bold', cursor: 'pointer' }}>
                📤 提交发布
              </button>
            </div>
          )}
        </div>
      )}

      {/* 发布管理 */}
      {activeTab === 'manage' && (
        <div style={{ padding: '16px' }}>
          <h3 style={{ color: '#fff', marginBottom: '16px' }}>📋 我的发布</h3>
          {loading ? (
            <div style={{ color: '#94a3b8', textAlign: 'center', padding: '20px' }}>加载中...</div>
          ) : myList.length === 0 ? (
            <div style={{ color: '#94a3b8', textAlign: 'center', padding: '20px' }}>暂无发布记录</div>
          ) : (
            <div style={{ display: 'flex', flexDirection: 'column', gap: '12px' }}>
              {myList.map(item => (
                <div key={item.id} style={{ background: '#1e293b', borderRadius: '8px', padding: '12px' }}>
                  <div style={{ color: '#fbbf24', fontSize: '14px', marginBottom: '4px' }}>{item.title}</div>
                  <div style={{ color: '#94a3b8', fontSize: '12px' }}>{formatDate(item.created_at)} | {item.info_type === 'deal' ? '💰 成交' : '🔍 求购'}</div>
                </div>
              ))}
            </div>
          )}
        </div>
      )}
    </div>
  )
}
