'use client'

import React, { useState, useEffect } from 'react'
import ObjectGallery from '../../../components/objects/ObjectGallery'
import { ObjectData } from '../../../components/objects/ObjectCard'
import AnimatedBackground from '../../../components/ui/AnimatedBackground'
import { useRouter } from 'next/navigation'
import Image from 'next/image'

// Универсальная функция для преобразования объекта из бэкенда в ObjectData
const transformRawToObjectData = (raw: any): ObjectData => {
  const rawId = raw?.id ?? raw?.object_id ?? raw?.uuid ?? raw?.name
  const object_id = typeof rawId === 'number' ? `object_${rawId}` : String(rawId ?? '')

  const deriveTitle = (): string => {
    const t = (raw?.title || '').toString().trim()
    if (t) return t
    const idStr = String(rawId ?? '').toString()
    const numMatch = typeof rawId === 'number'
      ? rawId
      : (() => { const m = idStr.match(/\d+/); return m ? Number(m[0]) : undefined })()
    if (typeof numMatch === 'number' && !Number.isNaN(numMatch)) {
      return `Объект ${numMatch}`
    }
    return idStr ? `Объект ${idStr}` : `Объект ${object_id}`
  }

  return {
    object_id,
    title: deriveTitle(),
    description: raw?.description ?? `Описание объекта ${raw?.title ?? object_id}`,
    image: raw?.image ?? null,
    location: raw?.location ?? raw?.address ?? 'Не указано',
    floors: Number(raw?.floors ?? 0),
    area: String(raw?.area ?? ''),
    type: raw?.type ?? 'object',
    status: raw?.status ?? 'active',
  }
}

const ObjectsPage: React.FC = () => {
  const [objects, setObjects] = useState<ObjectData[]>([])
  const [loading, setLoading] = useState(true)
  const [error, setError] = useState<string | null>(null)
  const [selectedObjectId, setSelectedObjectId] = useState<string | null>(null)
  const router = useRouter()

  useEffect(() => {
    const loadData = async () => {
      setLoading(true)
      setError(null)
      try {
        const url = '/api/get-objects'
        const res = await fetch(url, { cache: 'no-store' })
        const payloadText = await res.text()
        let payload: any
        try { payload = JSON.parse(payloadText) } catch { payload = payloadText }
        console.log('[ObjectsPage] GET /api/get-objects', { status: res.status, payload })

        if (!res.ok) {
          const errorMessage = typeof payload === 'string' ? payload : (payload?.error || 'Не удалось получить данные объектов')
           
          if (errorMessage.includes('Authentication required') || res.status === 401) {
            console.log('[ObjectsPage] Authentication required, redirecting to login')
            router.push('/login')
            return
          }
          
          throw new Error(errorMessage)
        }

        const data = (payload?.data ?? payload) as any
        let rawObjectsArray: any[] = []
        if (Array.isArray(data)) {
          rawObjectsArray = data
        } else if (Array.isArray(data?.objects)) {
          rawObjectsArray = data.objects
        } else if (data && typeof data === 'object') {
          rawObjectsArray = Object.values(data)
        }

        const transformedObjects = rawObjectsArray.map(transformRawToObjectData)
        setObjects(transformedObjects)
      } catch (err: any) {
        console.error('Ошибка при загрузке данных объектов:', err)
        setError(err?.message || 'Произошла неизвестная ошибка')
      } finally {
        setLoading(false)
      }
    }

    loadData()
  }, [router])

  const handleObjectSelect = (objectId: string) => {
    console.log('Object selected:', objectId)
    setSelectedObjectId(objectId) 
  }

  if (loading) {
    return (
      <div className="relative flex items-center justify-center min-h-screen overflow-hidden">
        <AnimatedBackground />
        <div className="relative z-10 text-center">
          <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-500 mx-auto mb-4"></div>
          <p className="text-white">Загрузка объектов...</p>
        </div>
      </div>
    )
  }

  if (error) {
    return (
      <div className="relative flex items-center justify-center min-h-screen overflow-hidden">
        <AnimatedBackground />
        <div className="relative z-10 text-center">
          <div className="text-red-500 mb-4">
            <svg className="w-12 h-12 mx-auto" fill="currentColor" viewBox="0 0 24 24">
              <path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z" />
            </svg>
          </div>
          <h3 className="text-lg font-medium text-white mb-2">Ошибка загрузки данных</h3>
          <p className="text-[#71717a] mb-4">{error}</p>
          <p className="text-sm text-gray-500">Если проблема повторяется, обратитесь к администратору</p>
        </div>
      </div>
    )
  }

  return (
    <div className="relative flex flex-col h-screen overflow-hidden">
      <AnimatedBackground />
      
      {/* Header */}
      <header className="relative z-20 bg-[#161824]/80 backdrop-blur-sm border-b border-blue-500/20">
        <div className="flex items-center justify-between px-6 py-3">
          <div className="flex items-center gap-4">
            <Image 
              src="/icons/logo.png" 
              alt="AerBIM Logo" 
              width={150} 
              height={40}
              className="object-contain"
            />
          </div>
          <div className="flex items-center gap-4">
            <span className="text-sm text-gray-400">
              Версия: <span className="text-cyan-400 font-semibold">3.0.0</span>
            </span>
          </div>
        </div>
      </header>

      {/* Main Content */}
      <div className="relative z-10 flex-1 overflow-y-auto">
        <div className="max-w-7xl mx-auto px-6 py-6">
          
          {/* Заголовок */}
          <h1 className="text-2xl font-bold text-white mb-6">
            Выберите объект для работы
          </h1>

          {/* Галерея объектов */}
          <ObjectGallery
            objects={objects}
            title=""
            onObjectSelect={handleObjectSelect}
            selectedObjectId={selectedObjectId}
          />
        </div>
      </div>
    </div>
  )
}

export default ObjectsPage