"use client"

import React, { useState } from 'react'
import { Card } from '@/components/ui/card'
import { Button } from '@/components/ui/button'
import { Input } from '@/components/ui/input'
import { Package, Plus, Search, Warehouse } from 'lucide-react'

interface MyWarehouseItem {
  id: string
  sku: string
  name: string
  category: string
  quantity: number
  price: number
  location: string
  status: 'in_stock' | 'low_stock' | 'out_of_stock'
  lastUpdated: string
}

export function MyWarehouseTab() {
  const [searchTerm, setSearchTerm] = useState('')
  const [items, setItems] = useState<MyWarehouseItem[]>([
    {
      id: '1',
      sku: 'SKU-001',
      name: 'Товар 1',
      category: 'Электроника',
      quantity: 25,
      price: 1500,
      location: 'A-01-15',
      status: 'in_stock',
      lastUpdated: '2024-01-15'
    },
    {
      id: '2',
      sku: 'SKU-002', 
      name: 'Товар 2',
      category: 'Одежда',
      quantity: 5,
      price: 800,
      location: 'B-02-08',
      status: 'low_stock',
      lastUpdated: '2024-01-14'
    },
    {
      id: '3',
      sku: 'SKU-003',
      name: 'Товар 3',
      category: 'Дом и сад',
      quantity: 0,
      price: 650,
      location: 'C-01-22',
      status: 'out_of_stock',
      lastUpdated: '2024-01-13'
    }
  ])

  const filteredItems = items.filter(item => {
    if (!searchTerm) return true
    const search = searchTerm.toLowerCase()
    return (
      item.name.toLowerCase().includes(search) ||
      item.sku.toLowerCase().includes(search) ||
      item.category.toLowerCase().includes(search)
    )
  })

  const getStatusColor = (status: string) => {
    switch (status) {
      case 'in_stock': return 'text-green-400'
      case 'low_stock': return 'text-yellow-400'
      case 'out_of_stock': return 'text-red-400'
      default: return 'text-white/60'
    }
  }

  const getStatusText = (status: string) => {
    switch (status) {
      case 'in_stock': return 'В наличии'
      case 'low_stock': return 'Мало'
      case 'out_of_stock': return 'Нет в наличии'
      default: return 'Неизвестно'
    }
  }

  const totalItems = items.length
  const totalQuantity = items.reduce((sum, item) => sum + item.quantity, 0)
  const totalValue = items.reduce((sum, item) => sum + (item.quantity * item.price), 0)
  const lowStockItems = items.filter(item => item.status === 'low_stock' || item.status === 'out_of_stock').length

  return (
    <div className="h-full flex flex-col space-y-6">
      {/* Статистика */}
      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
        <Card className="glass-card border-white/10 p-4">
          <div className="flex items-center justify-between">
            <div>
              <p className="text-white/60 text-sm">Общее кол-во товаров</p>
              <p className="text-2xl font-bold text-white">{totalItems}</p>
            </div>
            <Package className="h-8 w-8 text-blue-400" />
          </div>
        </Card>

        <Card className="glass-card border-white/10 p-4">
          <div className="flex items-center justify-between">
            <div>
              <p className="text-white/60 text-sm">Общее количество</p>
              <p className="text-2xl font-bold text-white">{totalQuantity}</p>
            </div>
            <Warehouse className="h-8 w-8 text-green-400" />
          </div>
        </Card>

        <Card className="glass-card border-white/10 p-4">
          <div className="flex items-center justify-between">
            <div>
              <p className="text-white/60 text-sm">Общая стоимость</p>
              <p className="text-2xl font-bold text-white">{totalValue.toLocaleString()} ₽</p>
            </div>
            <div className="h-8 w-8 bg-purple-500 rounded-lg flex items-center justify-center text-white font-bold">₽</div>
          </div>
        </Card>

        <Card className="glass-card border-white/10 p-4">
          <div className="flex items-center justify-between">
            <div>
              <p className="text-white/60 text-sm">Требует внимания</p>
              <p className="text-2xl font-bold text-yellow-400">{lowStockItems}</p>
            </div>
            <div className="h-8 w-8 bg-yellow-500 rounded-lg flex items-center justify-center">
              <span className="text-white text-lg">⚠</span>
            </div>
          </div>
        </Card>
      </div>

      {/* Панель управления */}
      <div className="flex flex-col sm:flex-row gap-4 items-start sm:items-center justify-between">
        <div className="relative flex-1 max-w-md">
          <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 h-4 w-4 text-white/40" />
          <Input
            placeholder="Поиск товаров..."
            value={searchTerm}
            onChange={(e) => setSearchTerm(e.target.value)}
            className="pl-10 bg-white/5 border-white/10 text-white placeholder:text-white/40"
          />
        </div>
        <Button className="bg-blue-600 hover:bg-blue-700">
          <Plus className="h-4 w-4 mr-2" />
          Добавить товар
        </Button>
      </div>

      {/* Список товаров */}
      <div className="flex-1 overflow-hidden">
        {filteredItems.length === 0 ? (
          <Card className="glass-card border-white/10 p-8 text-center">
            <Package className="h-12 w-12 text-white/40 mx-auto mb-4" />
            <h3 className="text-lg font-medium text-white mb-2">
              {searchTerm ? 'Товары не найдены' : 'Ваш склад пуст'}
            </h3>
            <p className="text-white/60 mb-4">
              {searchTerm ? 'Попробуйте изменить параметры поиска' : 'Добавьте первый товар на склад'}
            </p>
            {!searchTerm && (
              <Button className="bg-blue-600 hover:bg-blue-700">
                <Plus className="h-4 w-4 mr-2" />
                Добавить товар
              </Button>
            )}
          </Card>
        ) : (
          <div className="overflow-y-auto pr-2 max-h-full">
            {/* Заголовок таблицы */}
            <div className="grid grid-cols-7 gap-4 p-4 border-b border-white/10 text-white/60 text-sm font-medium">
              <div>SKU</div>
              <div>Название</div>
              <div>Категория</div>
              <div>Количество</div>
              <div>Цена</div>
              <div>Локация</div>
              <div>Статус</div>
            </div>

            {/* Строки товаров */}
            <div className="space-y-1">
              {filteredItems.map((item) => (
                <Card key={item.id} className="glass-card border-white/10 p-4 hover:bg-white/5 transition-colors">
                  <div className="grid grid-cols-7 gap-4 items-center">
                    <div className="text-white font-mono text-sm">{item.sku}</div>
                    <div className="text-white font-medium">{item.name}</div>
                    <div className="text-white/60 text-sm">{item.category}</div>
                    <div className="text-white font-bold">{item.quantity}</div>
                    <div className="text-white">{item.price.toLocaleString()} ₽</div>
                    <div className="text-white/60 text-sm font-mono">{item.location}</div>
                    <div className={`text-sm font-medium ${getStatusColor(item.status)}`}>
                      {getStatusText(item.status)}
                    </div>
                  </div>
                </Card>
              ))}
            </div>
          </div>
        )}
      </div>
    </div>
  )
}