import { NextResponse } from 'next/server'
import { prisma } from '@/lib/db'
import { CacheManager } from '@/lib/cache'

export const runtime = 'nodejs'

export async function GET(request: Request) {
  try {
    const { searchParams } = new URL(request.url)
    const bookId = searchParams.get('book') || ''
    const chapterNum = parseInt(searchParams.get('chapter') || '1')
    const versionId = searchParams.get('version') || ''

    // Check cache first (include version in cache key)
    const cacheKey = CacheManager.getChapterKey(bookId, chapterNum, versionId)
    const cachedChapter = await CacheManager.get(cacheKey)

    if (cachedChapter) {
      return NextResponse.json({
        chapter: JSON.parse(cachedChapter),
        cached: true
      })
    }

    // Get chapter with verses from database
    const chapter = await prisma.bibleChapter.findFirst({
      where: {
        bookId,
        chapterNum,
        book: versionId ? { versionId } : undefined
      },
      include: {
        verses: {
          orderBy: {
            verseNum: 'asc'
          }
        },
        book: {
          include: {
            version: true
          }
        }
      }
    })

    if (!chapter) {
      return NextResponse.json({ error: 'Capitolul nu a fost găsit' }, { status: 404 })
    }

    const chapterData = {
      id: chapter.id,
      bookName: chapter.book.name,
      chapterNum: chapter.chapterNum,
      verses: chapter.verses
    }

    // Cache the result for 1 hour
    await CacheManager.set(cacheKey, JSON.stringify(chapterData), 3600)

    return NextResponse.json({
      chapter: chapterData,
      cached: false
    })
  } catch (error) {
    console.error('Chapter fetch error:', error)
    return NextResponse.json({ error: 'Eroare de server' }, { status: 500 })
  }
}