import { NextResponse } from 'next/server'

const RADIO_GARDEN_API = 'https://radio.garden/api'
const HEADERS = {
  'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
  'Accept': 'application/json',
  'Referer': 'https://radio.garden/',
}

interface RGSearchHit {
  _source: {
    code: string
    type: 'channel' | 'place' | 'country'
    page: {
      url: string
      title: string
      place?: { id: string; title: string }
      country?: { id: string; title: string }
      subtitle?: string
    }
  }
  _score: number
}

interface RGSearchResponse {
  hits: { hits: RGSearchHit[] }
}

function extractId(url: string): string {
  const parts = url.split('/')
  return parts[parts.length - 1]
}

export interface SearchStation {
  id: string
  title: string
  placeId: string
  placeTitle: string
  country: string
}

export interface SearchPlace {
  id: string
  title: string
  country: string
}

export async function GET(request: Request) {
  const { searchParams } = new URL(request.url)
  const q = searchParams.get('q')

  if (!q || q.length < 2) {
    return NextResponse.json({ stations: [], places: [] })
  }

  try {
    const res = await fetch(`${RADIO_GARDEN_API}/search?q=${encodeURIComponent(q)}`, {
      headers: HEADERS,
      signal: AbortSignal.timeout(10000),
    })
    if (!res.ok) throw new Error(`Radio Garden search returned ${res.status}`)

    const json: RGSearchResponse = await res.json()

    const stations: SearchStation[] = []
    const places: SearchPlace[] = []

    for (const hit of json.hits.hits) {
      const src = hit._source
      if (src.type === 'channel') {
        stations.push({
          id: extractId(src.page.url),
          title: src.page.title,
          placeId: src.page.place?.id || '',
          placeTitle: src.page.place?.title || '',
          country: src.page.country?.title || src.code,
        })
      } else if (src.type === 'place') {
        places.push({
          id: extractId(src.page.url),
          title: src.page.title,
          country: src.page.country?.title || src.code,
        })
      }
    }

    return NextResponse.json({ stations, places })
  } catch (error) {
    console.error('Radio search error:', error)
    return NextResponse.json({ error: 'Search failed' }, { status: 502 })
  }
}