import { NextRequest, NextResponse } from 'next/server'
import cardsData from '../../../src/data/cards.json'

interface Card {
  id: number
  name: string
  set_name?: string
  set_code?: string
  card_number?: string
  rarity?: string
  game: string
  mana_cost?: string
  cmc?: number
  card_type?: string
  colors?: string[]
  oracle_text?: string
  flavor_text?: string
  power?: string
  toughness?: string
  artist?: string
  image_url?: string
  stock_image_url?: string
  artwork_crop_coords?: any
  current_price?: number
  market_price?: number
  verified: boolean
  created_at?: string
  updated_at?: string
}

export default async function handler(req: NextRequest) {
  // Enable CORS
  const headers = {
    'Access-Control-Allow-Origin': '*',
    'Access-Control-Allow-Methods': 'GET, POST, OPTIONS',
    'Access-Control-Allow-Headers': 'Content-Type, Authorization',
  }

  if (req.method === 'OPTIONS') {
    return new NextResponse(null, { status: 200, headers })
  }

  try {
    const url = new URL(req.url)
    const searchParams = url.searchParams

    // Get query parameters
    const skip = parseInt(searchParams.get('skip') || '0')
    const limit = parseInt(searchParams.get('limit') || '100')
    const search = searchParams.get('search')
    const game = searchParams.get('game')
    const set_name = searchParams.get('set_name')

    let cards: Card[] = cardsData as Card[]

    // Apply filters
    if (game) {
      cards = cards.filter(card => card.game === game)
    }

    if (set_name) {
      cards = cards.filter(card => card.set_name === set_name)
    }

    if (search) {
      const searchLower = search.toLowerCase()
      cards = cards.filter(card => 
        card.name.toLowerCase().includes(searchLower) ||
        (card.oracle_text && card.oracle_text.toLowerCase().includes(searchLower)) ||
        (card.card_type && card.card_type.toLowerCase().includes(searchLower))
      )
    }

    // Apply pagination
    const paginatedCards = cards.slice(skip, skip + limit)

    return new NextResponse(JSON.stringify(paginatedCards), {
      status: 200,
      headers: {
        ...headers,
        'Content-Type': 'application/json',
      },
    })

  } catch (error) {
    console.error('API Error:', error)
    return new NextResponse(JSON.stringify({ error: 'Internal server error' }), {
      status: 500,
      headers: {
        ...headers,
        'Content-Type': 'application/json',
      },
    })
  }
}